Prekeyi Tawari-Fufeyin

• B. SC, M. SC, MHPM, Ph. D
• Professor at Federal University of Petroleum Resource Effurun

This study evaluates the effects of chronic toxicity of single, binary and trinary combination of cadmium, arsenic and iron. The use of synthetic vitamin C and bitter leaf (Vernonia amygdalina) as a compound abatement was explored. Tissue metal concentration and histopathological changes were assessed as specific endpoints. The rats (Rattus norvegi...

This study evaluated the effects of chronic toxicity of single, binary and trinary combination of cadmium, arsenic and iron on Rattus norvegicus. The use of synthetic vitamin C and bitter leaf (Vernonia amygdalina) as a compound abatement was assessed. 10-weeks old R. norvegicus were exposed concurrently to 200mg of CdSO4, 200mg of Na2HA5O4, 200mg...

An assessment of the heavy metal content and biological pollution burden of an abattoir dumpsite, an automobile carwash, the Ikpoba River, and a private water borehole located near the abattoir dumpsite was conducted in Benin City in Southern Nigeria, during the rainy and dry seasons. The water samples’ pH was lower than the permissible values, wit...

The chronic accumulation profile of cadmium was determined by analyzing the tissues of Parachanna obscura exposed to cadmium and the interactive effects of copper and lead by exposing the same fish specimens to combined metals using mixtures of 0.2 mg/L cadmium with 0.2 mg/L copper and 0.2 mg/L cadmium with two different concentrations of 0.2 mg/L...

The study investigated the effects of exposure to petrol fumes on haematological parameters and urine composition of petrol station attendants in Benin City, Edo state, Nigeria. 2ml venous blood and 5ml voided urine samples were collected from volunteer petrol station attendants and subjected to haematological and urine composition analysis. Result...

Bioremediation uses microbial metabolism in the presence of optimum environmental conditions and sufficient nutrients to breakdown contaminants notably petroleum hydrocarbons. We reviewed technologies for carrying out bioremediation and observed that biotechnological approaches that are designed to carry out remediation have received a great deal o...

In recent times, flooding has been a recurrent problem in most parts of the world. In Nigeria, there exist reports of flooding in some towns and cities during heavy downpours but none compares with the flood under review. Flood waters from Cameroun entered Nigeria through the Benue River, into the River Niger on its way to the sea. Lots of physical...

The toxic effects of aluminium Chloride (AlCl3) in albino rats (Rattusnorvegicus) have been studied. The species weighing 250 ± 20g were administered varying concentrations of the LD50 (3630mg/kg body weight), ½ LD50 (1815mg/kg body weight) and ¼ LD50 (907.5 mg/kg body weight) of aluminium Chloride solution orally as drinking water for six weeks af...

The environment is constantly degraded with contamination from the petroleum industry and their by-products, dealing with this problem in most cases further compounds the problem as environmentally unfriendly technologies such as in situ burning have been adopted previously. The efficiency of cow dung for the remediation of automobile mechanic work...

The pollution removal ability of Vetiveria zizanioides (L.) Nash plant was investigated using compost leachate. Fifty (50) litres of untreated compost leachate from shell farm, Jeddo, Delta state was filtered and transferred to a treatment tank of about 60 litre capacity containing vetiver grass. The experiment was allowed to stand for 112 days wit...

Heavy metals are high density metallic chemicals that are potentially toxic at low concentrations and present a danger to human and environmental health. This study was conducted to ascertain the efficiency of microorganisms present in animal wastes in bioremediation of heavy metals present in spent engine oil contaminated soil. Spent engine oil im...

__________________________________________________________________________________________ ABSTRACT This study focused on the potential of poultry litter as a nutrient source for the bio stimulation of resident micro flora for remediation of spent oil contaminated soils. The study was carried out in the laboratory using fabricated glassware buckets...

Human beings are totally dependent on the environment for life itself. In Nigeria, like in other developing countries open dump is the only available option for solid waste disposal in the cities. This study is aimed at determining the physical and chemical parameters of soil from medical waste dumpsites in south western Niger Delta, Nigeria. Sampl...

This study was carried out to determine the level of soil pollution in two auto-mechanic villages in Benin City, Nigeria. Soil samples were collected in the rainy season months of July, 2012 and conventional analytical methods were employed for the determination of the physical and chemical parameters. The result revealed that TOC and TOM of the so...

Water pollution by effluent has become a question of considerable public and scientific concern in the light of evidence of their extreme toxicity to human health and to biological ecosystems. Hospital wastewater poses serious health hazard to healthworkers, the general public and the environment. This study was conducted to determine the physical,...

A total number of 338 specimens of Macrobrachium vollenhovenii were bought from fisher folks who fished from Ubeji, Jala and Soroghagbene; but marketed their landings at Ubeji. Specimens were collected at monthly intervals between March and November, 2011. The male to female sex ratio established was 1:2:3. The size at first maturity was 9.0 cm for...

Histological changes in the kidney tissues of albino rats (Rattus norvegicus) fed 100mg/kg body weight of cadmium sulphate incorporated as food material has been studied in vivo in an acute toxicological experiment. The behavioural pattern and physical changes in the rats were also investigated. Loss of weight and increased locomotor activity was o...

This study was carried out to determine changes in the blood and liver of rats given oral doses of cadmium (Cd) and zinc (Zn). Thirty 3 month old rats were kept six to a compartment in a well-demarcated five compartment cage labeled A, B, C, D, and E. After 2 weeks of acclimatization, and with ad libitum administration of water and feed, group A an...

Fish of species Parachanna obscura are exposed to four concentrations of cadmium (Cd) (0.02, 0.06, 0.18, or 0.54 mg L−1). Acute toxicity test results after 96 h showed marked hematological, histological, and behavioral changes. Quantitative blood analysis revealed that white blood cell (WBC), packed cell volume (PCV), and platelets counts were line...

The effect of dietary supplementation using node weed (Synedrella nodiflora) on the toxicity induced by single or combined doses of copper and lead in the guinea pig (Cavia porcellus) was investigated. Cu 1500 mg kg and Pb 600 mg kg were given orally as Cu(II) sulphate and Pb acetate. Single and combined doses of these metals were fed to animal gro...

The composition and distribution of fish in the Ikpoba reservoir were investigated. A total of fifty-seven species of fish belonging to thirty-nine genera and twenty-three families were recorded. Of these, 46 species were recorded at the upstream station, 35 at the reservoir, 24 at the slope and 32 at the downstream station. The percentage composit...

In this study, 30 rabbits of about 6 months old were divided into 3 cages corresponding to 3 groups A, B and C. Each cage had 10 animals. Animals in group A (Control) were fed with normal diet of grower’s marsh and elephant grass while those in groups B and C were fed with normal feed mixed with metal salts but with group C having the treatment fee...

The effects of dietary cadmium (cd) on the oesophagus, stomach and liver of Albino rats (Rattus norvegicus) has been studied. Rats were fed with 100mg/Kg body weight of Cd incorporated in feed in experiments which lasted 168 hours. Cytological examination of the tissues revealed progressive cyclosis of the stomach. The liver showed changes only aft...

Fish communities of a river subjected to urban disturbance including a section affected by warm effluents in Southern Nigeria are described. Thirty-nine species were recorded of which 82% occurred upstream, while thermal and downstream sections accounted for 51 and 44% respectively. The species distribution reflected the varying habitat conditions...