Adeyi Abiola

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Verified

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• Doctor of Mechanical and Materials Engineering
• Research Engineer at Forestry Research Institute of Nigeria

Nigeria faces significant environmental and health risks due to rapid Waste Electrical and Electronics Equipment (WEEE) generation, estimated at 500,000 tons annually. This systematic review analyses the situation of WEEE in Nigeria, examining existing policies, regulations, and emerging technologies for sustainable recycling. The review analysis r...

The demand for efficient and environmentally friendly spark ignition (SI) engines has driven researchers to explore advanced methods for optimizing engine performance and reducing emissions. One such method is the use of Artificial Neural Networks (ANNs) to develop predictive models that can accurately estimate engine performance under various oper...

Refrigeration systems play a critical role in various sectors of Nigeria’s economy, particularly in food preservation, healthcare, and industrial processes. However, the use of conventional synthetic refrigerants, which contribute significantly to global warming and ozone depletion, poses environmental challenges. This study presents a thermodynami...

Non-road spark ignition (SI) engines play a critical role in Nigeria, particularly in agriculture, construction, and small-scale power generation. Despite their extensive use, there is limited research on how Nigeria's unique environmental and operational conditions such as high ambient temperatures, poor fuel quality, and irregular maintenance pra...

As Nigeria continues to expand its industrial, commercial, and residential cooling needs, the demand for efficient and environmentally sustainable refrigeration systems is growing. However, the environmental impact of conventional refrigerants has raised concerns due to their high global warming potential and ozone depletion potential. This study p...

This study investigated the microwave drying of Senna alata leaves (SAL) for sustainable utilization. The effect of SAL form (un-chopped and chopped) and microwave power (200, 400 and 600 W) on the drying characteristics and energy utilization with comparative semi-empirical and artificial neural network (ANN) modelling was investigated. SAL was dr...

The adsorption characteristics of Nauclea latifolia medicinal leaves were examined across selected temperatures (30–50°C) and water activity levels (0.044–0.900) to assess its storage stability. Both univariate semi-empirical and multivariate statistical models were comparatively employed to represent and predict the observed adsorption characteris...

Application and efficiency of bio-coagulants for petroleum wastewater biocoagulation, flocculation, and sedimentation (bioclarification) are still confined to laboratory proof-of-concept practice. The scale-up process design of bio-clarified water recovery from petroleum wastewater has been a major research lacuna. This paper presents ASPEN Base Ca...

This work demonstrates the fruit sorting improvement system architecture using the Faster-RCNN algorithm to identify fruits of varying size, colour selection, and segregation. The requirement is for a fruit sorting mechanism with accurate and precise detection with accurate placement capabilities. For this purpose, a 5 DOF robotic arm was built in...

This study explores the thermodynamic characteristics of convectively dried Cobra 26 F1 tomatoes at various temperatures and after different thermal pre-treatments. Employing Multi-gene Genetic Programming (MGGP), the refined model accurately predicts energy utilization (EU), energy utilization ratio (EUR), exergy loss (ExLoss), and exergy efficien...

The feasibility of recovering bioactive antioxidants from Phyllantus emblica leaves using ethanol -water mixture (0 – 100%) and heat-assisted extraction technology (HAE-T) was investigated in this present study. To this effect, the process parameter of operating temperature (OT: 30 -50 oC), solid -to-liquid ratio (S:L: 1:20 - 1:60 g/mL) and extract...

The conventional method of mechanism control which requires physical contact is being replaced with remote control, especially with the advent of the Internet of things (IoT). Facial recognition is used to identify and authenticate faces from images or videos. It has many applications, including granting or restricting access to a facility, or secu...

This present study investigates the heat-assisted extraction (HAE) of bioactive antioxidants from Enantia chlorantha stem bark (ECSB). The effects of process parameters of operating temperature (OT: 35–55 °C), extraction time (ET: 100–200 min) and solid: liquid ratio (S/L: 1:20–1:50 g/mL) are determined on the total polyphenol content (TPC), antiox...

The major needs in machining are high material removal rate, good work surface finish and low tool wear. However, machining process often encounter tools wear problem which leads to increased product cost and poor quality. The aim of the study is to determine the effects of surface roughness and temperature of the cutting fluids on high-speed steel...

Previous investigations reported evaluation of biological, therapeutic and pharmacological activities of phenolic bioactive extract from Huntaria Umbellate Seed (HUS). However, process modelling and optimization, upscaling as well as techno-economic evaluation of Microwave-Assisted Extraction (MAE) of HUS are seldom documented in the literature. Th...

This study presented hybrid genetic algorithm adaptive neuro-fuzzy inference system (GA-ANFIS) modelling, cuckoo search algorithm optimization (CSAO), and scale-up techno-economics of Azadirachta indica leaves’ microwave-assisted extraction (MAE). Box-Behnken design (BBD) of Design-Expert software was used to design MAE experiment using microwave p...

The requirement for reduction of post-harvest losses increased production, and cost-effectiveness of foods are driving continuous food process investigations. In this study, Response Surface Methodology (RSM) was utilized to understand, model, and optimize the effect of selected process factors on the moisture content (MC) of convectively dried unr...

The requirement for cleaner and healthy environment is a drive for waste recycling programs. In this study, suitable reinforcement for composite production was extracted from Nauclea latifolia herb root waste (NLHRW) through alkalization. Proximate composition and crystallinity of NLHRW and alkalized NLHRW (ANLHRW) were determined using gravimetric...

A single-stage refrigeration system has a low Coefficient of Performance (COP), thus it becomes paramount to have cascade refrigeration systems when there is need to have an evaporator temperature that is below -25 oC. Heat absorbed (QE) in the evaporator of low temperature cycle of two-step cascade refrigeration systems is one of the two parameter...

PurposeDespite a huge pharmacological and medicinal significance of Citrullus Colocynthis fruit (CCF) extract as claimed by previous researchers, the extract production is limited to laboratory endeavour. Therefore, this study is aimed at developing optimal process conditions, scale-up process design with its associated economics for CCF microwave-...

The requirement for easily adoptable technology for fruit preservation in developing countries is paramount. This study investigated the effect of pre-treatment (warm water blanching time—3, 5 and 10 min at 60 °C) and drying temperature (50, 60 and 70 °C) on drying mechanisms of convectively dried Synsepalum dulcificum (miracle berry fruit—MBF) fru...

This work reported the effects of heat-assisted extraction (HAE) temperature (35 – 55 °C), solid: liquid (1:20 - 1:50 g/mL) and time (100 - 200 min) on the total phenolic content (TPC, GAE/g), bioactive extracts yield (EYs, %) and antioxidant activity (AA, AAE/g) of Senna alata leaves (SALs) using the Box-Behnken experimental design. Multi-objectiv...

Context: Nonconventional extraction methods, such as microwave, supercritical fluid, and ultrasonic, are known to be veritable means of producing solvent-free high-quality essential oils. Nonetheless, technical requirements for the utilization of these extraction technologies are often exorbitantly expensive, thereby limiting their utilization. Evi...

The diverse adverse effects of waste generated from numerous industrial and local sources have been one of the most significant impediments to environmental sustainability. One of the many waste management technologies explored is the use of biological treatment techniques through the use of bioreactors. Bioreactors with a broad range of applicatio...

This study presented ASPEN Base Case Simulation (BCS) using optimum laboratory experimental data, techno-economic predictive models, and multi-objective optimum profitability scenario of biodiesel production from palm kernel oil. The BCS was developed in ASPEN Batch Process Developer V10 environment. Predictive models for predicting and optimizing...

Automation of agricultural and horticultural operations keeps received great attention for over a decade. The control parameters adopted depend on the location and characteristics of likely obstacles and navigation requirements. An automated lawnmower (ALM) with fuzzy logic control is presented in this study. Fuzzy logic was chosen to improve a pre...

Arable farming of maize is the most common of all crops in Sub-Saharan Africa. Most often, the processing is done domestically using manual effort, but on few occasions some part are done visiting commercial mechanized processors. This work presents the evaluation of the performance of a maize sheller scaled for domestic use. Three set of maize inp...

Statistical modelling of hot smoke processing of pre-treated Tilapia (Oreochromis niloticus) fish was reportedly inaccurate, making it difficult to design, predict, and reproduce the finished product’s quality; hence, accurate modelling of this process is a gap in study. This study filled this gap and extended the literature by investigating the ac...

p> Automation of agricultural and horticultural operations keeps received great attention for over a decade. The control parameters adopted depend on the location and characteristics of likely obstacles and navigation requirements. An automated lawnmower (ALM) with fuzzy logic control is presented in this study. Fuzzy logic was chosen to improve a...

This work investigated the influence of process variables of extraction temperature (35 - 55oC), solid to liquid ratio (1:20 - 1:50 g/mL) and time (100 - 200 min) on the total phenolic content (TPC) and yield (EY) of Carica papaya leaves (CPL) extracts using Box Benken experimental design available in Design Expert software. Bi-objective process op...

The drying characteristics of unblanched (UB), steam blanched (SB) and hot water blanched (WB) Cobra 26 F1 tomatoes were investigated at drying temperature of 40, 50, 60 and 70 °C and constant air velocity of 1.2 m/s in a convective oven. Gaussian process regression (GPR)-based models defined with squared-exponential kernel (GPR-SE), rational quadr...

In this work, we synthesized and economically analyzed a sustainable process of industrial production of microencapsulated anthocyanins powder (MAP) from Hibiscus sabdafiffa L. calyx (HSC) with the assistance of SuperPro Designer software. Open literature data were used in the synthesis of flowsheet and minimum selling price (MSP) of MAP was the on...

Allium sativum extract is one of the medicinal and aromatic products used in pharmaceutical and food industries. The scientific literature bibliography regarding process scale-up simulation and techno-economics of phenolic extract from Allium sativum microwave-assisted extraction is seldom reported. This study presented optimization and techno-econ...

The primary objective of this study is to determine the hot air drying characteristics and nutritional quality of orange‐fleshed sweet potato (OFSP) in a convective dryer. Three temperatures (323.15, 333.15, and 343.15 K) and fan speed levels (0.5, 0.9, and 1.3 m/s) were used. A rehydration study of dried OFSP was also carried out. Modeling and pre...

This aim of this study was to evaluate the effects of pretreatments and temperature on the hot air drying characteristics of hog plum fruits. Hog plum fruits were pretreated with olive oil/K2CO3 or sunflower oil/K2CO3 at 28 °C and olive oil/NaOH cum blanching at 96 °C for 15s, hot water at 96 °C for 15s, and dried in a hot air drier at 50, 60, and...

This work presents an integrated heat-assisted extraction process for the production of crude anthocyanins powder (CAnysP) from Hibiscus sabdariffa calyx using SuperPro Designer. The influence of process scale-up (0.04 -1000L) and variables (temperature, time and ethanol proportion in solvent) were investigated by adopting a circumscribed central c...

The dynamometer is to mimics driving condition in an indoor controlled condition measuring engine output parameters like speed, torque, power, combustion conditions and exhaust compositions. However, the complexity and dynamics involved in the making of this instrument makes it unaffordable for student research except it is funded. This work report...

The dominance of three-wheelers in inner city transportation cannot be overrated, because it is presumed to be safer compared to two-wheel drives. It is an intermediary between the motor cycles and taxis, as it is efficient for both passengers and goods transportation. However, as manufacturers introduce newer brands into the market, the impact rel...

A low cost photodiode-based pyranometer with an in-built temperature and humidity monitoring system, robust data-logging, long-range wireless interface to an indoor unit capable of measuring solar irradiance, instant temperature, and relative humidity was designed, developed and tested in this study. The work was carried out in Osun State Universit...

Sierrathrissaleonensis (SL) is a low valued fish in Nigeria because of its small size and availability of fleshy alternatives. Therefore, an alternative utilization ofSL is crucial. In this study, SL wasused to produce fish cracker (SLC).The SLC, being an intermediate product was dried to achieve moisture stability. During drying process, the influ...

The hot air drying characteristics of fermented-cooked (FC) cassava chips were investigated at a temperature of 50, 60, and 70�C and the fan speed of 0.5, 0.9, and 1.3 m/s. Proximate compositions, functional characteristics, and moisture diffusion parameters of the FC cassava chips were also studied. Furthermore, the applicability of mathematical (...

This study presents predictive modelling with uncertainty analysis, optimization and techno-economic feasibility of Bio-catalyzed Biodiesel Production from Azidirica Indica Oil (BCBPAIO). Central Composite Design (CCD) predictive model and optimum conditions for BCBPAIO were developed in Design Expert software. The model uncertainty analysis was pe...

Understanding the effect of reinforcement scales on the properties of fibre reinforced composite and establishment of suitable material property predictive model are important for successful composite development. This study investigated the effect of micro and nano scale Momordica augustisepala stem natural fibre (MASNF) on the mechanical properti...

The quality characteristics and stability of phenolic by-products from Cola nitida wastes are critical factors for drug formulation and food nutraceutical applications. In this study, the effect of electromagnetic-based microwave-reflux extraction on the total phenolic content, antioxidant capacity, morphological characteristics, physisorption and...

Nauclea latifolia root (NLR) extract is one of phytochemicals used to treat various ailments in most of developing countries. This investigation focuses on modelling, optimization and computer-aided simulation of phenolic solid-liquid extraction from NLR. The extraction experiments were conducted at extraction temperature (ET: 33.79–76.21 °C), proc...

This study designed, techno-economically analyzed and compared the heat-assisted extraction (HAE)- and ultrasound-assisted extraction (UAE)-technology-based processes (HAE-tBP and UAE-tBP) for the production of crude anthocyanins powder (CAnysP) from Hibiscus sabdariffa calyx (HSC) with the assistance of SuperPro Designer software. Both the base ca...

Studies on modeling and optimization of alkali treatment, investigation of experimental uncertainty and sensitivity analysis of alkali treatment factors of natural fibers are important to effective natural fiber reinforced polymer composite development. In this contribution, response surface methodology (RSM) was employed to investigate and optimiz...

This study is aimed at modelling and optimization of phenolic compound extraction from Azadirica Indica Leaves (AIL) using Response Surface Methodology (RSM), Adaptive Neuro-Fuzzy Inference System (ANFIS) and Cuckoo Search algorithm (CSA). The extraction experiments were conducted at Extraction Temperature (ET): (33.79-76.21oC), Process Time (PT):...

The viscoelastic property of packaging material affects foods’ postharvest management and biophysical quality preservation of food. This study investigated the creep viscoelastic property of neat polyvinyl alcohol film and polyvinyl alcohol film reinforced Momordica augustisepala nanofiber composite. The applicability and comparison of Burger pheno...

This study applied Adaptive Neuro-Fuzzy Inference System (ANFIS) to predict the moisture ratio (MR) during the drying process of yam slices (Dioscorea rotundata) in a hot air convective dryer. Also the effective diffusivity, activation energy, and rehydration ratio were calculated. The experiments were carried out at three (3) drying air temperatur...

This work designed, modeled and performed economic analysis of the base case extraction and recovery of catechin mix (CM) from Camellia sinensis leaves (CSL) using deep eutectic solvent (DES) and microwave assisted extraction (MAE) with the assistance of SuperPro Designer software. Techno-economic analysis of three commercial scales of manufacture...

Nowadays, there are interests around the world concerning the applicability of natural fibers in polymer composite development for technological advancement. Natural fiber inclusion in synthetic polymer is termed partially degradable polymer composite which is considered environmentally friendly and acceptable. However, a notable deficiency is thei...

In this paper, Adaptive Neuro-Fuzzy Inference System (ANFIS) was used to model and predict Grewia Polysaccharide Gum (GPG) extraction yield from Grewia mollis (GM) powder/water system. The data for modelling the process behaviour consisted of four inputs (process temperature, GM powder/water ratio, process time and pH) and GPG yield as the output....