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O. D. Onukwuli

Publications (8)

Influence of Process Variables on Ilmenite Leaching in Binary Solution: Experimental Evaluation and Artificial Neural Network Modeling

C. C. Okoye, O. D. Onukwuli & C. F. Okey-Onyesolu · Journal of Materials Science Research and Reviews · 2026

This research is focused on evaluating the suitability of an unconventional binary lixiviant in the leaching of iron from ilmenite. Batch dissolution studies were conducted to examine the influence of some independent process variables: particle size, acid concentration, oxidant...

Open access Research Article 10.9734/jmsrr/2026/v9i2487

Methanolysis of Africa Pear Seed Oil via Thermally Activated Empty Palm Fruit Bunch Ash (TAEPFBA) Catalyst, ANN Prediction and Sensitivity Analysis

O. E. Umeagukwu, O. D. Onukwuli, C. N. Ude & C. O. Asadu · Journal of Engineering Research and Reports · 2022

This study investigated the catalytic effect of thermal modified empty palm fruit bunch ash (TAEPFBA) on the transesterification reaction of Africa pear seed oil (APSO) with optimization of the process variable, and relative contribution of each variable ascertained. The TAEPFBA...

Open access Research Article 10.9734/jerr/2022/v23i12767

Deturbidization of Vegetable Oil Refinery Wastewater with Extracted Fish Scale Biomass via Coagulation Process; Non-linear Kinetics Studies

C. F. Okey-Onyesolu, O. D. Onukwuli & C. C. Okoye · Journal of Engineering Research and Reports · 2018

Chito-protein was successfully synthesized from fish scale. The ability of a coagulant (chito-protein) prepared from fish scale (FSC) to carry out an effective removal of pollutants from food processing industry (vegetable oil industry wastewater, VOW) was evaluated at bench scal...

Open access Research Article 10.9734/jerr/2018/v2i29943

Removal of Heavy Metal Pb(II) Ions from Aqueous Solution Using Pentaclethra Macrophylla and Tetracarpidium Conophorum Seed Shells Based Activated Carbons: Equilibrium, Kinetics and Thermodynmamics Studies

C. F. Okey-Onyesolu, O. D. Onukwuli, C. C. Okoye & I. C. Nwokedi · Current Journal of Applied Science and Technology · 2016

Biosorption potentials of activated carbons from pentaclethra Macrophylla (PMAC) and Tetracarpidium Conophorum (TCAC) seed shells for the removal of Pb(II) from aqueous solution were investigated. The adsorbents were characterized by Fourier transform infrared (FTIR) spectroscopy...

Open access Research Article 10.9734/BJAST/2016/27255

Study of Isothermal Parameters for Adsorptive Uptake of Orange G Dye: An Overview of Non-linear Approach and Error Analysis

C. C. Okoye, C. F. Okey-Onyesolu, O. D. Onukwuli & I. C. Nwokedi · Journal of Materials Science Research and Reviews · 2023

In this research, effort to convert waste to wealth was explicated in the usage of agro waste materials of regenerative resource, almond endocarp (Terminalia catappa) and tamarind seeds (Dialium guineense), as precursors for activated carbon production through thermal and chemica...

Open access Research Article

Biogas Production from Waste By-products of Ethanol Production: 3. Modeling of Gas Yield with Time

A. U. Ofoefule, U. C. Okoro, O. D. Onukwuli & C. N. Anyanwu · Physical Science International Journal · 2013

The modeling of gas yield with time for the biogas production from waste by-products of ethanol production process was studied. The wastes from the processing of four starch feedstock and from their fermentation wort were utilized for the biogas production studies. The wastes con...

Open access Research Article

Performance of Natural Coagulants in the Treatment of Vegetable Oil Industrial Effluent

C. F. Okey- Onyesolu, C. C. Okoye, C. N. Ude, O. D. Onukwuli & O. E. Achugbu · Asian Journal of Advanced Research and Reports · 2020

The potentials of natural coagulants (egg shell and fish scale) in the treatment of vegetable oil industrial wastewater were investigated. The coagulants were characterized to determine their chemical compositions, functional groups and morphology using proximate analysis method,...

Open access Research Article 10.9734/ajarr/2020/v12i130278

Biodiesel Production from Tigernut (Cyperus esculentus) Oil and Characterization of its Blend with Petro-diesel

A. U. Ofoefule, C. N. Ibeto, U. C. Okoro & O. D. Onukwuli · Physical Science International Journal · 2013

This study was carried out to assess the fuel quality of biodiesel produced from tigernut (Cyperus esculentus) oil and its blends with petro- diesel. The oil was extracted from the tigernut by solvent extraction method using petroleum ether. The oil was trans-esterified using pot...

Open access Research Article