Mike Ajieh

• PhD, MSc, BEng
• Lecturer at Delta State University

Water-soluble polymers are used to improve drilling operations to ensure that oil and gas wells are drilled in less time and completed with minimized formation damage. However, excessive utilization of these polymers additives may have implication on the drilling outcomes. In this work, drilling fluids comprising of different compositions of polyan...

The petroleum industry frequently uses oilfield chemicals, such as corrosion inhibitors, scavengers, drilling fluid, and chemical enhanced oil recovery methods, to improve oil recovery. However, these chemicals can negatively impact the geochemical characteristics of the formation, potentially leading to facility failure and reservoir formation dam...

Amid global challenges like climate change and resource depletion, Nigeria’s pursuit of low-carbon energy resources teeters on the brink. Nigeria grapples with the delicate balance between economic growth, environmental stewardship, and energy security. Energy and natural resources are crucial to modern society, playing a pivotal role in economic d...

Manufacturing processes in the recent times prioritizes competitiveness and continuous improvement. This study examined production data from an indigenous polyurethane firm to monitor controllable variables (i.e., density, tensile strength, hardness, compression and elongation) for quality and improve outcomes. Data was subjected to statistical pro...

The circular life cycle of waste management, designed for waste-to-energy, can substantially contribute to efficient waste management, a precursor for sustainable energy and food production. This study evaluates knowledge, attitudes, and practices (KAP) related to waste management and identify its potential for improving energy and food production....

Corrosion management in some remote locations such as Niger Delta region of Nigeria, is at risk of uncertainty of constant power supply. Thus, solar photovoltaic (PV) presents a sustainable alternative to conventional fossil energy in mitigating pipeline failure, associated human and material harzards and other environmental exposures. Coating defe...

Anaerobic digestion (AD) is a waste management method worldwide, that results in biogas and digestate production. The digestate remains is a potential biofertilizer but may fall short of vital nutrients required for optimal plant growth, hence, requires amendment with other biomass residues. This study was aimed at investigating the microbial quali...

Water Boiling Test (WBT) was carried out to quantify carbon monoxide (CO) and particulate matter (PM 2.5) emissions. Typical rural kitchen environment was modeled using the Laboratory Emission Monitoring System (LEMS), and a WBT tailored tool for Controlled Cooking Test (CCT). Five cookstoves were subjected to the WBT test and CO data generated wer...

Anaerobic digestion (AD) of organic wastes results in biogas and digestate production. The digestate from AD may fall short of vital nutrients required for an optimal plant growth due to feedstock quality. Thus, digestate amendment with biomass and aerobic metabolic activities becomes an essential process for nutrient enhancement. This study aimed...

This study investigated the batch co-digestion of cattle rumen content (CRC) and food waste (FW) for biogas production in different ratios (CRC:FW) to assess biogas production and process stability. The results showed that CRC and FW possess characteristics that are desirable for biogas production as seen in their respective total solids (10.85 and...

The use of wastes for biogas production has been restricted to few feedstock like cattle manure and food waste. Increasing the feedstock base for biogas production is capable of increasing the sustainability of feedstock availability. This study seeks to assess sociocultural and acceptability issues associated with the use of faecal waste (human ex...

The energy potentials of Pennisetum purpureum Shumach and Panicum maximum Jacq, commonly called Elephant and Spear grasses, were investigated. These grass species were selected based on their availability, yield, and carbon-fixing abilities. Proximate and ultimate analysis of these grasses was carried out in order to obtain the moisture content (MC...

Keywords: Performance, time, medium, insulator, bio-briquette, conduction, temperature, drying

Engineered biological systems used for resource recovery often utilize anaerobic digestion to treat organic wastes by reclaiming the carbon as energy (methane gas) and a soil amendment (biosolids). This study explored the production of biogas from co-digestion of cow dung waste and water hyacinth (Eichhornia crassipes) using anaerobic biological co...

Biogas produced from anaerobic digestion of organic wastes consists of mainly methane (CH4) and undesirable gases like carbon dioxide (CO2), hydrogen sulphide (H2S) and other trace gases. This study focused on the modelling and optimisation of biogas upgrading using high pressure water scrubbing (HPWS). The biogas upgrading process was simulated us...

Waste from abattoir coupled with fast proliferation of water hyacinth in water ways have both become a growing concern in Nigeria. The principle of anaerobic digestion is well known for its ability to transform biodegradable organic matter to biogas. Floating water hyacinth was collected freshly from Ologbo River and blended with dung collected dir...

This volume reports on the state of crisis in Africa in the early twenty-first century. Africa, on the eve of the ‘independence revolution’, was the continent of hope and high expectations. By the third decade of independence, optimism had been replaced by dismality. African states had been beset by ethno-political squabbles, military rule, civil w...

This volume reports on the state of crisis in Africa in the early twenty-first century. Africa, on the eve of the ‘independence revolution’, was the continent of hope and high expectations. By the third decade of independence, optimism had been replaced by dismality. African states had been beset by ethno-political squabbles, military rule, civil w...

An improved biomass stove was designed, constructed and its performance was evaluated. The uniqueness of the stove is its portability, and insulated combustion chamber. In addition, a conical flame collector was introduced with vents for ease of circulation of primary and secondary air. Stove performance was based on the heat transfer efficiency, p...

Pennisetum purpureum Shumach otherwise known as Elephant grass and Panicum maximum Jacq also known as Guinea grass have been found by several researchers as an alternative source of energy. They are clean and reduce atmospheric CO 2 through photosynthetic sequestration and secondly, they become cleaner when processed and combusted by using improved...

In contemporary times, increase in population has placed a huge burden on fuel wood and is now forcing the growing population to engage in deforestation. Of the vast energy resources, non-renewable fossil energy still dominates the consumption chart in Nigeria coupled with its increasing costs which is going beyond the reach of low income earners....

In most developing countries like Nigeria, the use of biomass cooking stove is predominant. This is often done in a poorly ventilated kitchen or thatched houses sometimes occupied by up to 3-7 households. Researchers have proved that smoke and other emissions resulting from fuel wood in traditional stoves have led to increase in health hazards whic...

Purpose: To evaluate the histopathological effects of spent oil based drilling mud and cuttings on Aporrectodea longa. Methods: The earthworm, Aporrectodea longa, was exposed to different concentrations of suspended particle phase (SPP) of drilling mud and cutting, collected from an abandoned oil drilling site in Mpanak, Niger Delta Region, for 28...

The Niger Delta region of Nigeria is characterized with several drilling operations in the quest for hydrocarcons. Drilling fluids namely ClearBore, Bentonite and HydroPac were examined using Silicon fluid as standard Newtonian fluid. They are complex non-Newtonian fluid and key components of drilling mud. For each test fluid studied, there were fi...

Fuel wood consumption remains a principal contributor to the rate of deforestation in Africa. In general, the level of dependence on wood fuels by African countries ranges between 61% to 86% of the primary energy demand and 74% to 97% of the domestic energy needs. It is estimated that over 92% of the total wood harvested in Africa goes for energy p...

This study is aimed at evaluating the quality of groundwater from Hand Dug Well (HDW) in Uromi, Esan North East local Government Area, Edo State, Nigeria. Uromi lies northeast of Esan, located on longitude 3° 24' E and latitude 6° 27' N. It is covered with land area of about 2987.52 square kilometres. Groundwater samples were collected from HDWs an...