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Between Soccer and Thunder Teslim Balogun (1927 – 1972)

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Hon. Femi Kehinde

In this season of anomie and atrophy, it is better to remember with fondest and affectionate memory, those people who had made us happy, and had impacted into our lives and essence, through their God given talents.

Tesilimi Olawale Ayinde Balogun was one. He lived a 45 years, that was laced and filled with soccer. After all, the Nigerian firmament, is replete with stories of unsung heros in commerce, politics, law, enterprise, education, sports, medicine, traditional institutions and so on.

Football is arguably the world’s most important game. Football, that round leather ball,is mankind’s most beloved sporting game.

Its love, transcends religion, ethnic or political divides. This was the game that Teslim Balogun devoted his entire life to serve. Teslim Balogun was born in Lagos in 1927. He attended St. Patrick’s Primary School, Oke-Awo, Lagos and St. Mary’s Catholic School, Porthacourt, after which he moved back to Lagos to navigate his life, future and career growth.

His father- Oseni, was an international cricketer, but soccer was in his blood. His soceer ingenuity, was noticed in his elementary school days in Lagos and Porthacourt.

According to Teslim-“it must be because I even have to force myself to walk along the street ordinarily and not jog along, as if I had a ball at my feet.”

It was this urge, that developed a footballer in Teslim. According to him, “I not only wanted to kick things; many lads do, I wanted to be able to control things with my feet.

”I was a lad in Lagos long before I knew what the game was about, before I had even seen a football.

“I didn’t have a ball, so I got a hard unripe orange and tied it to a piece of string, then in any spear moment, even when I was walking across the road, I will dangle the orange in front of me and juggle it from one foot to another.”

At the Saint Mary’s Primary School in Porthacourt, his love for soccer became more than an interest but an obsession. His bow legs, aided his skills as a footballer.

At an impressionable age of 18 years, Thunder entered big football competition in 1945, when he played for the PWD second team and the defunct Apapa Bombers that won the second division Championship that year.

Early in the next season, he transferred to the UAC, and later Lagos Marine, where he was quickly spotted out as a prospective great centre forward. He was from 1948-1950, Centre Forward for the Railway Club.

He was live wire of the club, a forward line that knew no retreat. During that period, the club won all championship trophies.

He had an outstanding feat, when he scored a heart-trick against the Police Athletic club. This decided his soccer position as a centre forward.

The match had an effect on Teslim’s football career. Referring the game was the Chairman of the Railway Club, who recommended him as a member.

At this time, Teslim was an apprentice electrician, for a hobby. He took up printing, he became more interested in printing than in things electric, and was more interested in football than in anything. To an average Nigerian soccer fan, Teslim Balogun means the undisputed centre forward king, and the largest crowd puller of modern soccerdome.

Teslim was quickly nick named “Thunder” and “Balinga,” the names that followed him around in the whole footballing career.

To school children then, he was “baba ball.”

The Nigerian football association was formed in 1933; a Daily Times Article of 21st August 1933 invited people to the NFA meeting held at the Sports Health Office, in Broad Street, Lagos and was open to a football interested public.

As of the 1938-1939 football season, the NFA, had been recognised by the English football association. The NFA was not formally inaugurated until 1945, when a national team was put together.

In 1942, a cup competition, a world Memorial Challenge, limited only to Lagos based teams was started. The world memerial challenge was won by Zik Bombers in (1942), Lagos Marines, (1943,) Lagos Railways in (1944 and 1945) respectively.

The NFA later inaugurated the Governor’s Cup to replace the world memorial challenge. The new competition became a national competition, and the first winners were Lagos Marine.

In 1948, a National Team was built around players discovered at the Governor’s Cup.

The star players in the national team were Dan Anyiam,(Lagos UAC)- a skillful player, who plays with his head as well as his feet. Anyiam was equally born in Nkwerre in the Eastern Region of Nigeria, in 1927. He had captained his primary school football team at the age of 12 years. Others were- Peter Anieke and Teslim Olawale Balogun (both of Lagos Railway).

Nigeria’s first National Team was named UK Tourists and after a few unofficial warm up games, went to the UK.
The team boarded the RMSS Apapa on 16th August 1949, for a playing tour of England and arrived Liverpool 13 days later. The players who made the trip were – Goalkeepers, Sam Ibiam (Port Harcourt), Isaac Akioye (Hercules, Ibadan); Defenders: Justin Onwudiwe (Lagos Railway), Olisa Chukwura (Abeokuta), ATB Ottun (Lagos Marine), Isiaku Shittu (Lagos UAC), John Dankaro (Jos), Hope Lawson(Lagos Marine), Dan Anyian (Lagos UAC), Okoronkwo Kanu (Land & Survey) ; Forwards: Mesembe Otu (Lagos Marine), Peter Anieke (Lagos Railway), Titus Okere (Lagos Railway), Etim Henshaw (Lagos Marine) and Edet Ben (Lagos Marine). Etim Henshaw was the team captain, making him our first ever national team captain. Teslim Balogun was the star. The team had no shoes.

Nigeria’s first ever official game was against Marine Cosby, which it won 5-2. During the next game, against an Athenian League XI, the English refused to play if the Tourists didn’t wear boots. The Tourists wore boots and lost, 8-0. The third game, which was generally agreed as the best, was a 2-2 draw with a Corinthians League XI. At the end of the tour of nine games, the team’s record was P9, W2, D2, L5. All five losses were with boots on.

After the tour, Teslim Balogun was signed by Peterborough United, becoming the first ever Nigerian football export. On the return voyage home, the UK Tourists took on the new name- Red Devils and stopped in Freetown, Sierra Leone. During the stopover in Sierra Leone, Nigeria played her first official game against another country, defeating Sierra Leone 2-0 on the 8th of October, 1949.

Interestingly, one of the members of the UK tourists, Olisa Chukura, a native of Asaba in present day Delta State, veered off football, read law, practiced law in Ibadan, became a Senior Advocate of Nigeria, and died on the 3rd of September, 2001.  He had a successful law practice.

One of his most outstanding cases was the 1983 Governorship Election Petition, between Bola Ige and Omololu Olunloyo. He was Bola Ige’s Attorney.

In the 1949 football tour of the United Kingdom, the English Soccer writers did not fail to see the qualities and soccer wizardry in Teslim Balogun. The Daily Graphics Sports Editor – Edgar Kail, remarked about him thus – “their 22 year old six foot three bow legged, giant centre forward, is a real artist and strange as it may seem in modern football, he holds the ball and uses it well.”

After the successful London trip, he wanted to play soccer off shore and also, learn more about printing.

He had even as a spare time printer, ran into big trouble, when he sent a Nigerian 5 pounds note, to a printer in England and asked him to quote on printing 100,000 of them.

Teslim Balogun approached Mr. Darby Allen, the Secretary of the Nigerian football association and asked him if he could help him to join a football team in England.

Allen, introduced Teslim to the Peterborough manager-Mr. George Swindin, the former Arsenal goalkeeper.
Mr. Swindin gave him a trial and signed him up. He became a professional footballer in 1955.

A coloured man in English soccer was a novelty!

According to Teslim – “I didn’t score. But the fans were pleased with me, and perhaps more important so, was manager Swindin. The goals were to come later, quite regularly. In fact, I finished the season, top scorer with Peterborough’s reserves.

I thoroughly enjoyed the season-and not only because I was top scorer; the club did all they could to help me settle down in England, and I got a job with a local printing firm.

I wanted to learn more about printing. For on my return, I wanted to do two things: teach football and setup my own printing business. In fact, I wanted to combine the two and run my own football magazine.”

“I arranged to study at the London School of Printing. This meant living in or near London. Peterborough is over 75 miles away. So I got accommodation in London. To keep trim, I used to work out at the Paddington Recreation Ground.
There I met a Queen’s Park Rangers supporter. He suggested I should contact the club. I thought this is a good idea”

“Soon afterwards, I got a letter from the Queens Park Rangers manager, Mr. Jack Taylor, asking me to go along for a trial. I was accepted. My ambition was realised. I was to play in the English League football.

“Not only was I to play, I was to score a goal in my first match against Watford.”

Thunder Teslim Balogun relocated back home in 1961 and became the first African to qualify as a professional coach. He was a coach for Nigeria at the 1968 summer Olympics. He was a member of the Nigerian National side for 12 years.

The 1954 edition, of Governor’s Cup, was renamed the FA cup, in sync with the mood of the moment, after Anthony Enahoro had, in 1953, moved a motion for independence for Nigeria, at the Nigerian Parliament.

The 1954 edition of the renamed FA Cup was won by Calabar FC, who beat Kano Pillars 3-0 in the final. Meanwhile, the Red Devils were still active, playing a series of friendlies against Ghana, including a 7-0 loss in 1959. The NFA finally joined CAF, then followed this up by joining FIFA, a year later as Nigeria approached independence.

In 1960, Nigeria played against Egypt in a qualifying game for the Rome 1960 Olympic Games, its first ever international competition. In that game against Egypt, the Egyptians trashed us. The team was made to wear green, rather than the red, they used to wear. It was from that moment that the name of the team was changed from Red Devils to Green Eagles. Also, in 1960, as independence approached, the FA Cup was renamed the Challenge Cup. The 1960 edition of the Challenge Cup was won by Lagos ECN who beat Ibadan Lions 5-2 in the Final.

This development was spurred by our first major triumph. We won the gold medal at 1973’s All Africa Games, which Nigeria hosted. In Teslim’s soccer career, there was a funny tale of a goal keeper, who died after trying to stop Thunder Teslim’s shot, that was usually as acerbic, as a Thunderstorm.

The likes of Christian Chukwu, Emmanuel Okala, Muda Lawal, Segun Odegbami Sam Ojebode, Christian Madu, Joe Apiah, Kunle Awesu, Best Ogedegbe, Muda Lawal, Haruna Ilerika and many others, broke into the National team in the 1970s, the new generation of players, qualifies Nigeria for the Second AFCON, which was hosted by Ethiopia in 1979.

Teslimi Olawale Ayinde Balogun died in his sleep, on the 30th of July 1972 at the age of 45 years and left 8 children- Kayode, Tunde, Tokunbo, Olamide, Jibola, Iyabo, Bioye and Oluwole. He was married to Mulikat – a Table Tennis Player. Mulikat recalled that in the early hours of the 30th of July, 1972, she spoke and chatted with her husband, till about 2:30am, without an inkling of an unfortunate death. He was hale and hearty, without any untoward medical history. The Queen of England, sent a condolence letter, when he died.

As a befitting memorial and remembrance, the Teslim Balogun stadium in Surulere Lagos is named in his honour.

The Teslim Balogun Stadium was officially opened in 2007, by the Government of Babatunde Raji Fashola as Governor of Lagos State.

The stadium, conceptualized in 1984, under the Administration of Military Governor Gbolahan Mudashiru, crawled and suffered so many hiccups, for about 23 years. As recently as 2006, it was occupied by homeless people and area boys. The stadium, with the capacity of 24, 325 people, sits adjacent to the Lagos National Stadium, Surulere Lagos.
The Teslim Balogun Foundation was also founded after his death, to assist the families of Nigerian former international footballers, who may have suffered financial distress.

Teslim Olawale Ayinde Balogun, may your soul continue to play soccer yonder, and also continually, find peaceful repose with the Lord.

Hon (Barr) Femi Kehinde is a Former Member, House of Representatives
National Assembly Abuja, representing Ayedire/Iwo/Ola-Oluwa Federal Constituency of Osun State, (1999-2003)
&
Principal Partner
Femi Kehinde & Co (Solicitors)
Ibadan, Lagos and Abuja.

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Opinion

PDP Crisis: Illegal Factional Convention is a Direct Assault on Party Constitution and Democracy

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By Prince Adedipe Dauda Ewenla

The attention of party faithfuls and the general public has been drawn to the desperate and unconstitutional attempt by a faction within the Peoples Democratic Party to foist an illegal National Convention on the party in clear violation of its constitution and established democratic norms.

Let it be stated unequivocally: the Constitution of the PDP is clear, unambiguous, and binding on all members only a duly elected National Working Committee (NWC) has the constitutional authority to convene, approve, and conduct a National Convention.

This position is firmly grounded in the provisions of the PDP Constitution:

1. Section 31(3) clearly vests the power to summon and convene the National Convention in the appropriate constitutional organ of the party, which operates through the National Working Committee.

2. Section 29(2)(a) establishes the National Working Committee as the principal executive organ responsible for the day-to-day administration and decision-making of the party.

3. Section 47(1) affirms the supremacy of the party constitution, making it binding on all members and organs of the party without exception.

Flowing from these provisions, any gathering, meeting, or assembly convened outside this constitutional framework is illegal, null, void, and of no consequence, being ultra vires, null ab initio, and incapable of conferring any legal rights or obligations whatsoever.

The ongoing attempt by a faction reportedly aligned with the Minister of the Federal Capital Territory, Nyesom Wike, to organize a so-called convention through an imposed and illegitimate caretaker structure is nothing but a brazen assault on the rule of law, party supremacy, and internal democracy, and amounts to a clear case of constitutional subversion.

For the avoidance of doubt:
Individuals who have been suspended or expelled from the party lack the locus standi to act on its behalf.

Any caretaker arrangement not constitutionally backed by the elected organs of the party remains a nullity ab initio.
No faction, no matter how powerful, can override the supremacy of the party constitution.

Any purported action taken in furtherance of this illegality is void and liable to be set aside ex debito justitiae by any court of competent jurisdiction.

It is instructive that the Federal High Court and other competent courts have already taken judicial notice of these constitutional breaches by entertaining suits challenging the legality of the proposed convention. This alone is a clear warning that the entire process is fundamentally defective and cannot stand the test of law.

We therefore align firmly and unequivocally with the leadership direction and stabilizing efforts under Kabiru Turaki, whose commitment to constitutional order, due process, and party unity remains the only credible path forward for the PDP at this critical time.

The party cannot and must not be hijacked by individuals driven by personal ambition, vendetta politics, or external influence.

The survival of the PDP as a viable opposition platform depends on strict adherence to its constitution and respect for its legitimate structures.

We warn, in the strongest possible terms, that:

Any convention conducted outside the authority of a duly elected NWC will be resisted and rejected by loyal members of the party.

Any outcome from such an illegal exercise will be treated as void ab initio and will not be recognized within the party or before the Independent National Electoral Commission.

Those promoting this illegality are inviting avoidable chaos, multiplicity of suits, and grave political consequences for the PDP ahead of 2027.

This is not just about a convention this is about the soul, legality, and future of our great party.

I call on all genuine stakeholders to rise above factional manipulation and defend the constitution of the PDP with courage and clarity.

The rule of law must prevail. Fiat justitia ruat caelum. The constitution must stand. The PDP must not fall.

Prince Amb. (Dr.) Adedipe Dauda Ewenla
PDP Southwest Ex-Officio

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Opinion

Intentional Progressive Leadership and Disciplined Security: Catalysts for Unlocking Possibilities

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By Tolulope Adegoke PhD

In an increasingly interconnected and volatile world, the twin forces of intentional progressive leadership and disciplined security stand as indispensable drivers of meaningful advancement. Intentional progressive leadership is characterized by deliberate, forward-thinking decision-making that prioritizes inclusive growth, innovation, accountability, and long-term societal transformation over short-term gains or entrenched interests. Disciplined security, in turn, refers to a professional, rule-of-law-based, human-centered approach to safeguarding citizens, institutions, and resources—one that integrates military, intelligence, law enforcement, and community engagement while upholding human rights and fostering trust. Together, these elements do not merely maintain stability; they actively unlock possibilities across three interconnected spheres: peoples (individuals and communities), corporates (businesses and organizations), and nation building (state institutions and societal cohesion).

This write-up examines their active roles, portrays the current realities as they stand in Nigeria, Africa, and the wider world, provides relevant global and regional examples, and offers practical, unbiased solutions. Drawing on established patterns of development, the analysis underscores that where these forces converge effectively, they generate exponential outcomes; where they falter, stagnation and fragility ensue. The goal is to present a balanced, evidence-informed perspective suitable for policymakers, business leaders, scholars, and development practitioners internationally.

Defining and Contextualizing the Core Elements

Intentional progressive leadership goes beyond charisma or authority. It demands strategic vision anchored in data, ethical governance, stakeholder inclusion, and adaptive resilience. Leaders in this mold invest in human capital, promote transparency, and align policies with sustainable development goals. Disciplined security complements this by creating the enabling environment of safety and predictability. It emphasizes professional training, intelligence-led operations, community policing, and the rule of law rather than militarization or repression. When these operate in synergy, they transform potential into tangible progress: educated citizens innovate, businesses thrive without fear, and nations build resilient institutions.

Active Roles in Delivering Possibilities for Peoples

For individuals and communities, intentional progressive leadership and disciplined security create pathways to dignity, opportunity, and empowerment. Progressive leaders prioritize education, healthcare, and skills development, viewing people as the primary asset. Disciplined security ensures freedom from fear, enabling daily pursuits of livelihood and aspiration.

In practice, this synergy fosters social mobility and cohesion. Progressive leadership invests in youth programs and vocational training, while disciplined security protects learning environments and public spaces. The result is reduced vulnerability to exploitation and increased civic participation.

Active Roles in Delivering Possibilities for Corporates

Corporations require stable operating environments to invest, innovate, and expand. Intentional progressive leadership enacts policies that ease business registration, combat corruption, and promote public-private partnerships. Disciplined security safeguards supply chains, intellectual property, and personnel against threats like extortion or sabotage.

This combination drives economic dynamism. Businesses flourish when leaders provide predictable regulations and when security forces respond swiftly to disruptions, allowing corporates to focus on value creation rather than risk mitigation.

Active Roles in Delivering Possibilities for Nation Building

At the national level, these elements are foundational to sovereignty, legitimacy, and prosperity. Progressive leadership builds inclusive institutions, diversifies economies, and integrates regional and global partnerships. Disciplined security preserves territorial integrity, deters external interference, and supports internal harmony.

Nation building succeeds when leadership fosters national identity and security architecture reinforces it through equitable protection and justice.

The Current Picture: Realities in Nigeria, Africa, and the Wider World

Nigeria exemplifies both promise and persistent hurdles. As Africa’s most populous nation and largest economy, it possesses immense human and natural potential. Yet, as of early 2026, security challenges remain acute: insurgency and banditry in the Northeast and Northwest, farmer-herder conflicts in the Middle Belt, kidnapping for ransom nationwide, and separatist tensions in the Southeast. These have displaced millions, stifled agriculture and commerce, and eroded public trust. Leadership under President Bola Tinubu has pursued reforms, including kinetic and non-kinetic counter-insurgency measures, the appointment of a new Chief of Defence Staff in late 2025 for better operational coherence, and emphasis on human capital development (HCD 2.0). Progress includes reported surrenders of insurgent affiliates and targeted infrastructure investments, yet gaps persist in governance coordination, community engagement, and addressing root causes such as poverty and youth unemployment.

Across Africa, the landscape is heterogeneous. Positive models include Rwanda, where post-genocide leadership under President Paul Kagame has combined visionary governance with disciplined security to achieve sustained growth, digital innovation, and regional stability. Botswana stands as another exemplar: decades of prudent, transparent leadership have turned diamond revenues into broad-based development while maintaining professional security institutions that uphold democratic norms. Ghana demonstrates democratic continuity with progressive economic policies and relatively effective security cooperation. Conversely, parts of the Sahel face coups, jihadist expansion, and governance fragility, highlighting how leadership vacuums and undisciplined security exacerbate cycles of instability.

Globally, the interplay is evident in success stories such as Singapore’s transformation under Lee Kuan Yew, where meritocratic leadership and disciplined, corruption-free security institutions propelled a resource-poor city-state into a high-income economy. South Korea’s post-war reconstruction similarly blended visionary leadership with security alliances and human capital focus. In contrast, nations experiencing leadership complacency or fragmented security—such as certain conflict zones in the Middle East or Latin America—illustrate stalled development and eroded possibilities.

These realities reveal a clear pattern: intentional progressive leadership and disciplined security are not luxuries but necessities. Their absence perpetuates underdevelopment; their presence catalyzes breakthroughs.

Relevant Examples Illustrating Essence and Impact

  • Rwanda: Post-1994 genocide, intentional leadership focused on reconciliation, education, and technology hubs, supported by disciplined security reforms that prioritized professional training and community policing. This has elevated Rwanda to one of Africa’s fastest-growing economies, attracting foreign investment and reducing poverty dramatically.
  • Botswana: Progressive leadership emphasized accountable resource management and anti-corruption measures, paired with a professional military and police force. The outcome is one of Africa’s most stable democracies and highest Human Development Indices.
  • Singapore: Lee Kuan Yew’s intentional policies built a merit-based civil service and rigorous, rule-based security apparatus. This created a safe, efficient environment that transformed the nation into a global financial and logistics hub.
  • Nigeria-specific: Initiatives like community-based security arrangements in some states, when aligned with progressive local leadership, have reduced localized banditry. Corporate examples include Lagos tech ecosystems thriving amid targeted security enhancements in business districts.

These cases justify the essence: deliberate leadership and disciplined security deliver measurable possibilities when integrated holistically.

Proffering Relevant Solutions: Pathways Forward Without Prejudice

Solutions must be context-specific yet universally applicable, emphasizing collaboration across stakeholders.

For Peoples (Individuals and Communities):

  • Nigeria and Africa: Scale up human capital programs like Nigeria’s HCD 2.0 through universal basic education, vocational training, and digital literacy, especially in rural and conflict-affected areas. Integrate community policing models that empower local vigilantes under professional oversight to build trust.
  • Wider World: Adopt inclusive social safety nets and mental health support in post-conflict settings. International partners can provide technical assistance for youth entrepreneurship funds.
  • Outcome: Reduced vulnerability and empowered citizens who contribute actively to development.

For Corporates:

  • Nigeria and Africa: Enact progressive policies such as streamlined business regulations, tax incentives for security technology investments, and public-private security partnerships (e.g., joint task forces for critical infrastructure). Encourage corporate social responsibility in community safety initiatives.
  • Wider World: Promote global standards like ISO security management systems and cross-border investment guarantees tied to stability metrics.
  • Outcome: Enhanced investor confidence, job creation, and innovation ecosystems.

For Nation Building:

  • Nigeria: Strengthen institutional reforms, including anti-corruption enforcement, judicial independence, and devolved security responsibilities (e.g., state police with federal safeguards). Foster inclusive national dialogues and leverage technology for intelligence sharing.
  • Africa: Enhance African Union mechanisms for peer review, joint peacekeeping, and economic integration to address transnational threats.
  • Wider World: Support multilateral frameworks that reward progressive governance with development aid and security cooperation, emphasizing capacity-building over external imposition.
  • Cross-cutting Measures: Invest in data-driven monitoring (e.g., peace indices), leadership training academies, and civil society engagement to ensure accountability.

Implementation requires political will, sustained funding, and adaptive evaluation. International standards—such as those from the World Bank’s governance indicators or the Institute for Economics and Peace—can guide benchmarking without external overreach.

Conclusion: A Call to Deliberate Action

Intentional progressive leadership and disciplined security are not abstract ideals but active agents that shape destinies. In Nigeria and across Africa, where challenges are pronounced yet potential is vast, their effective deployment can convert vulnerabilities into strengths. Globally, they offer proven blueprints for resilient, prosperous societies. The current picture, while marked by setbacks, also reveals pathways of hope through ongoing reforms and exemplary models. By embracing these forces with intentionality, stakeholders at all levels can deliver genuine possibilities—empowered peoples, thriving corporates, and cohesive nations. The imperative is clear: invest in people-centered leadership and professional security today to secure a more equitable and stable tomorrow. Through collaborative, evidence-based strategies, Nigeria, Africa, and the wider world can realize their full potential in an interdependent global order.

Dr. Tolulope A. Adegoke, AMBP-UN is a globally recognized scholar-practitioner and thought leader at the nexus of security, governance, and strategic leadership. His mission is dedicated to advancing ethical governance, strategic human capital development, and resilient nation-building, and global peace. He can be reached via: tolulopeadegoke01@gmail.comglobalstageimpacts@gmail.com

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Opinion

Characterisation of Biomass Feedstocks Relaxation Properties Using Visco Elastic Models

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By Dr. Aminu Owonikoko, PhD

Overview

This thesis investigates a deceptively simple but industrially important question: what happens to biomass materials when they are compressed and then allowed to relax? Biomass — such as woodchips, wheat straw, leafy residues, cotton seeds, and wood pellets — is a major renewable resource used for energy production and sustainable manufacturing. However, its physical behaviour during handling, storage, and processing is poorly understood. Unlike uniform materials such as sand or grain, biomass is irregular, springy, and unpredictable. This unpredictability leads to blockages, equipment failures, and inefficient energy use in biomass processing plants.

The research provides a scientific foundation for predicting how biomass behaves under pressure by combining controlled experiments with Visco elastic modelling. The work introduces a new method for extracting key model parameters, enabling more accurate and transparent predictions of biomass relaxation behaviour.

Why Biomass Behaviour Matters

Biomass supply chains involve several mechanical steps: compaction, transport, storage, and feeding into processing equipment. During these steps, biomass is often compressed. Once the pressure is removed, the material “relaxes” — it expands, shifts, and redistributes internal stresses. This relaxation affects:
• how much biomass can be stored
• how reliably it flows through hoppers and conveyors
• how much energy is required to process it
• the likelihood of blockages or equipment downtime

Understanding this behaviour is essential for designing efficient, reliable, and cost effective biomass systems.

Research Aim

The central aim of the thesis is to characterise the stress relaxation behaviour of five biomass feedstocks and to develop robust Visco elastic models that can predict this behaviour under different loading conditions.

Experimental Approach

Five biomass materials were selected due to their relevance in renewable energy and agricultural supply chains:
• Fuzzy cotton seeds
• Leafy biomass
• Wheat straw
• Woodchips
• Wood pellets

Each material was compressed using a Shimadzu MTS testing machine. After reaching a target stress level, the load was held constant while the material’s stress decay was recorded over time (typically 60, 120, and 180 seconds). These measurements captured both fast relaxation (immediate stress drop) and slow relaxation (longer term settling).

The experimental data revealed that each biomass type behaves differently, reflecting differences in structure, moisture content, particle shape, and internal bonding.
Modelling Approach

To interpret the experimental results, the thesis applies Visco elastic models — mathematical tools traditionally used to describe materials that behave partly like solids and partly like fluids. Two models were central:
1. Zener Model
– Captures both elastic and viscous behaviour
– Useful for materials with a clear fast relaxation component

2. Two Maxwell Elements Model
– Represents two relaxation processes simultaneously
– Ideal for materials with both fast and slow relaxation phases

A key contribution of the thesis is the development of a numerical and graphical method for estimating model parameters (such as relaxation time constants) without relying heavily on curve fitting software like MATLAB or OriginPro. This method improves transparency, reduces error, and makes the modelling approach more accessible to engineers.
Key Findings

1. Biomass Has Distinct Relaxation “Signatures”

Each biomass type exhibits a unique pattern of stress decay. For example:
• Wood pellets relax quickly and predictably.
• Leafy biomass relaxes slowly and irregularly.
• Wheat straw shows intermediate behaviour.
These signatures can be used to classify materials and predict their handling performance.

2. Fast and Slow Relaxation Are Mechanically Meaningful

The two Maxwell elements model successfully separates fast and slow relaxation processes. This distinction helps engineers understand how biomass responds immediately after compression versus how it settles over time.

3. New Parameter Extraction Method Improves Accuracy

The thesis introduces a novel approach for estimating relaxation time constants and stress components. This reduces dependence on automated curve fitting tools and provides more reliable model predictions.

4. Models Predict Real Behaviour Well

When applied to experimental data, both the Zener and two Maxwell models accurately reproduce the relaxation curves. This confirms that Visco elastic modelling is a powerful tool for biomass characterisation.

Practical Implications

The findings have direct relevance for industries that handle biomass:
• Improved equipment design: Better predictions of relaxation behaviour reduce blockages and mechanical failures.
• Optimised storage: Understanding how biomass settles helps determine safe and efficient storage densities.
• Reduced energy use: More predictable flow reduces the energy required for conveying and processing.
• Enhanced process reliability: Plants can operate more consistently with fewer interruptions.

Conclusion

This thesis provides a comprehensive experimental and theoretical framework for understanding biomass relaxation behaviour. By combining detailed measurements with improved Visco elastic modelling, it offers new insights into how biomass responds under pressure — insights that are essential for scaling up renewable energy and sustainable manufacturing.

The work advances both scientific understanding and practical engineering, contributing to the development of cleaner, more efficient biomass systems.

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