Contamination

Effect of Crude Oil Contamination and Bioremediation with Fertilizer on Physicochemical Properties of Soil

The release of hydrocarbons into the environment whether accidentally or through human activities is a main cause of water and soil pollution. This study investigated the effect of crude oil contamination and fertilizer treatment on soil physicochemical properties. Unpolluted soil samples obtained from the bed of Ovia River, Benin City, Nigeria, were contaminated with crude oil, and thereafter remediated with NPK/urea fertilizer. A range of physicochemical parameters were measured in both soil samples.
AuthorName(s)
Francis Nosa ASEMOTA
Osahon Daniel ABU

Microbial Activities in Fertilizer-Amended Contaminated Soils

Bioremediation, an affordable and environmentally friendly technique, remains a viable strategy for tackling water and soil pollution. This study investigated microbial activities in crude oil-contaminated soils amended with fertilizer. Unpolluted soil samples obtained from the bed of Ovia River, Benin City, Nigeria, were contaminated with crude oil, and thereafter remediated with NPK/urea fertilizer. Textural classification of the soils showed that the clay soil contained 77 % clay, while that of the sandy-clay soil was 72 %.
AuthorName(s)
Francis Nosa ASEMOTA
Osahon Daniel ABU

Enteric Bacterial Contamination of Salad Vegetables Sold Within Anyigba, Kogi State, Nigeria

This study evaluated the enteric bacterial contamination of cabbage, cucumber and carrots sold within Anyigba, Kogi State. These vegetables which are usually eaten raw in coleslaw and salads were analysed for the presence and level of enteric bacteria using standard microbiological procedures. Results revealed bacterial contamination of the vegetables with enteric bacteria from all the sales points. Mean bacterial counts recorded for theses vegetables from Good shepherd Hospital sale point, were 8.9×106, 1.03×107, and 4.85×106 cfu/g for cabbage, carrot and cucumber respectively.
AuthorName(s)
Aminu, R.F.
Alfred, S.O.
Sadiku, J.O.
Emurotu, M.O.

Groundwater quality of Benin City urban aquifer of the Pleistocene-Oligocene Benin Formation, Nigeria

A general investigation of the groundwater quality of the Benin City Urban Aquifer of Benin Formation for the effects of athropogenic activities shows the following results: lead (Pb) has mean value of 0.044 mg/l from 25 sampled boreholes. Seven of these borehole waters show anomalous Pb values of over 0.050mg/l. For the 25 boreholes, Pb mean value of 0.044mg/l, 0.055mg/l standard deviation and variance of 0.003mg/l are indicative of high Pb concentration compared with 0.05mg/l W.H.O. limit.

AuthorName(s)
Christopher N. Akujieze
G.E. Oteze

Growth Response of Abelmoscus esculentus (L.) Monench Planted in Lead Contaminated Soil.

This study was carried out in the undergraduate project plot of the department of Plant Biology and Biotechnology, University of Benin from March to July 2020, to determine the impact of lead contamination on okra plant. A field experiment was conducted using 4 levels of Pb pollution namely 25, 50, 75, 100 mg/kg and control. Each bag containing 5 kg of air dried sandy loam soil was arranged in a completely randomized design (CRD) with three replicates. Five (05) seeds were sown in each bag. All bags were watered regularly. Plants were thinned down to one per bag after a week of emergence.

AuthorName(s)
Boniface Onomoin Edegbai*
Opeyemi Christianah Oki
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