Christian C. Opurum

Inhibition of Escherichia coli Cell-Free β-Galactosidase Activity by Binary Mixtures of Water-miscible Solvents

Christian C. Opurum, Obioma K. Mejeha, Christian O. Nweke & Oluchukwu R. Nwangwu · Asian Journal of Biotechnology and Bioresource Technology · 2024

The inhibitory effects of ethanol-dimethylsulfoxide (DMSO) and ethanol-N,N-dimethylformamide (DMF) binary mixtures on the activity of cell-free β-galactosidase from Escherichia coli were assessed. The concentration-response relationships of the individual solvent and the mixtures...

Open access Research Article 10.9734/ajb2t/2024/v10i4224

Modelling of Biphasic Biogas Production Process from Mixtures of Livestock Manure Using Bi-logistic Function and Modified Gompertz Equation

Christian C. Opurum, Christian O. Nweke, Christopher E. Nwanyanwu & Nkemakolam A. Nwogu · Annual Research & Review in Biology · 2021

In this study, anaerobic digestion (AD) of three livestock manure: (poultry manure (PM), pig dung (PD), and cow dung (CD) was conducted at different mixed ratios under mesophilic (25-35°C) conditions. Two kinetic models, the modified Gompertz and bi-logistic function model were u...

Open access Research Article 10.9734/arrb/2021/v36i330358

Kinetics of Diauxic Biogas Production from Energy Crops: Sunflower (Helianthus annus) and Napier Grass (Pennisetum purpureum) with Animal Manure

Christian C. Opurum, Christian O. Nweke, Christopher E. Nwanyanwu & Nkemakolam A. Nwogu · Current Journal of Applied Science and Technology · 2021

This study evaluated the kinetics of diauxic-like pattern of biogas production from energy crops, Sunflower (SF) and Napier grass (NG) with cow dung (CD). The tests were performed in a batch reactor (R) operation for 60 days in R1 - R4 and 53 days in R5 - R8 under mesophilic cond...

Open access Research Article 10.9734/cjast/2021/v40i631316

Kinetic Study on Biogas Production from Cabbage (Brassica oleracea) Waste and Its Blend with Animal Manure Using Logistic Function Model

Christian C. Opurum · Journal of Advances in Microbiology · 2021

This research paper aimed to evaluate the kinetics of anaerobic digestion (AD) of mixtures of cabbage waste (CW) with (Poultry dropping (PD) and Cow dung (CD). The study was conducted in 10L bio-digesters for 35 days under mesophilic conditions (25 - 35OC). Logistic function equa...

Open access Research Article 10.9734/jamb/2021/v21i130317

Anaerobic Digestion of Corn Stover for Improved Biomethane Yield: Effect of Organic Nitrogen Sources (Soybean Curd Residue and Fish Waste)

Christian C. Opurum & F. J. C. Odibo · Journal of Advances in Microbiology · 2021

The present study investigated the effect of organic nitrogen sources, soybean curd residue (SCR), and fish meal (FW) on the anaerobic digestion of corn stover for biomethane production. The bioreactors were seeded with the corn stover (corn cob and corn sheath), soybean curd res...

Open access Research Article 10.9734/jamb/2021/v21i130316

Valorization of Palm Oil Mill Effluent into Biodiesel Using Mixed Whole-cell Candida albicans and Pseudomonas aeruginosa

Ndidi D. Dike-Ekeh, Campbell O. Akujobi, Justina C. Orji, Christian C. Opurum, Etienne C. Chinakwe & Henry U. Anuforo · Biotechnology Journal International · 2026

The indiscriminate discharge of raw palm oil mill effluent (POME) severely pollutes the environment. POME is generated in large quantities in many parts of Imo State, Nigeria, where the processing of palm fruits is a major occupation. However, there is crisis in the global energy...

Open access Research Article 10.9734/bji/2026/v30i2870