Heavy metals are often present in leachate at concentrations exceeding discharge limits. They are persistent, non-biodegradable and harmful to human health. It is important that leachate is effectively treated before discharge into aqueous systems. Isothermal and kinetic studies were undertaken to evaluate the removal of Pb, Ni, Cr and Zn ions from synthetic leachate by a cassava peel-derived adsorbent (CPDA).
UBJST ,Volume 7, Issue 1 2019
Fresh samples of edible mushrooms - Volvariella volvacea, Pleurotus tuberregium and Pleurotus djamor – were collected from some home gardens in which the mushrooms were cultivated on decayed wood shavings from sawmills in Oluku, Benin-City, Edo state. These were harvested weighed and oven dried. The dried samples were milled and examined by chemical analyses for their proximate, minerals and phytochemical compositions.
Different brands of palm oil produced in parts of Edo and Delta states were classified as native (locally processed) or regular (industrially produced) and evaluated for their physical and chemical properties. Physical characteristics examined included oil color which varied between pale red and brick red, and specific gravity (SG) which ranged between 0.5 - 0.6. Olein-stearin ratio and the rate of spread of oil were variable. The free fatty acids in the different oil samples recorded 12.44 - 15.15mg/KOH/g.
This study investigated the forms and distribution of Iron (Fe) oxide in soils developed from four different parent materials in Nigeria, and their relationship with some soil physical and chemical properties. Composite soil samples were collected at soil depths of 0–30cm, 30–60cm, 60–90cm and 90–120cm from Idanre (Basement complex) in Ondo State. Koko (Alluvium) in Delta State, Nigeria Institute for Oil Palm Research (NIFOR) (Coastal Plain Sands) and Uhonmora (Shale) both in Edo State, Nigeria.
Dumpsite leachate contains harmful pollutants including heavy metals which are detrimental to humans and the environment. Conventional metal removal methods are expensive and may result in the production of large volumes of sludge, hence the focus on natural low-cost adsorbents. In this study, the use of an adsorbent derived from cassava peels for the removal of nickel (Ni), lead (Pb), chromium (Cr) and zinc (Zn) from dumpsite leachate was investigated. Leachate samples were obtained from a dumpsite and characterized to determine the concentration of heavy metals.
This research was designed to determine the phytochemical composition, acute toxicity, as well as anti-depressant effect of the ethyl acetate root extract of Rauvolfia vomitoria. The phytochemical analysis of Rauvolfia vomitoria was determined using standard methods, while FST (forced swim test) and TST (tail suspension test) were applied to evaluate the anti-depressant activity. The result indicated that the ethyl acetate root extract of Rauvolfia vomitoria is rich in tannins, phenols, flavonoids, terpenoids, glycosides and alkaloids.
Nursing students' satisfaction with clinical experiences is one important criterion for evaluating clinical practice in nursing education. This study assessed the level of satisfaction with clinical experiences among undergraduate nursing students in tertiary institutions in Ovia North East Local Government Area, Edo state. A descriptive cross-sectional research design was adopted for the study. A total of three hundred and eighty (380) participants took part using convenient sampling and a self-structured questionnaire as instrument for data collection.
This study investigated the profile of testicular (gonad) and epididymal (extragonadal) sperm characteristics and spermiogram in Epomops franqueti bat caught during the peak (late wet season) of reproductive activities. Fifteen adult male African fruit bats (E.
African fruit bat, Epomops franqueti is a megachiroptera of the family pteropodidae and phytophagous. This preliminary work aimed at elucidating the bat brain machineries involved in foraging for food, its adaptation and survival. The gross anatomy and morphometrics of the head and brain were investigated to establish the echolocation capability, visual sensibility, and the olfaction acuity by measuring the whole brain weights, length, and diameter.
This study investigates the effect of treated refinery effluent on some selected soil properties. The experiment involved the use of four different rates of refinery effluent 0, 50, 100, and 150 ml / 2 kg soil in twelve pots laid out in a Completely Randomized Design at a screen house. The soil samples were analyzed for physical, chemical, and microbial properties before and after the experiment, and changes in soil microbial properties were analyzed using simple descriptive statistics.