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Jan 10, 2019Open    AccessArticle

Physicochemical and Microbiological Quality of Springs in Kyambogo University Propinquity

Timothy Omara, Winfred Nassazi, Monica Adokorach, Sarah Kagoya
The availability of usable water in an area is the first indication of its demonstrated ability to sustain life. In peri-urban areas, urbanites utilize water from springs and compete disapprovingly for it amongst themselves and with animals. The straggling populace and the compromised sanitation are deteriorating spring water sources. There is an urgent need to analyze springs to ascertain their bacteriological and physical qualit

Oct 30, 2018Open    AccessArticle

Evaluation of Concentrations of Heavy Metals in Water Used in Agricultural Irrigation

Marcio Antonio Ferreira Camargo, Thaiany Aparecida Ribeiro Pereira
The knowledge about toxic levels of toxic heavy metals in irrigation water is very scarce and quite varied. This work aimed to evaluate the concentrations of toxic heavy metals in the lake of the Experimental Farm UEMG, Passos-MG Unit. The toxic heavy metals evaluated were Cadmium (Cd), Chromium (Cr) and Lead (Pb). The lagoon was divided into ten strategic points for sampling, each point being sampled in triplicate. The pH of the

Oct 24, 2018Open    AccessArticle

Polyurethane Foams Derived from Vegetable Oil Used in the Adsorption of Polychlorinated Biphenyls Present in Insulating Mineral Oil

Marcio Antonio Ferreira Camargo, Antonia Marli dos Santos, Gilberto Orivaldo Chierice, Salvador Claro Neto, Maria Diva Landgraf
PCBs, polychlorinated biphenyls (polychlorinated biphenyls), are the generic names given to the class of organochlorine compounds resulting from the reaction of the biphenyl group with anhydrous chlorine in the presence of a catalyst. They are toxic, persistent, bioaccumulative and pose the risk of causing harm to human health and the environment. Large quantities of PCBs were produced in several countries between 1927 and 1977. I

Jul 26, 2018Open    AccessArticle

Towards the Use of Software Modelling for Determination of Heavy Metal Speciation in Soils in Zambia

Kalebaila K. Kennedy, Kamwela M. Zawadi
The toxicity of heavy metals in water is typically related to the concentration of the metals in water. However, it is known that apart from the concentration the speciation of the heavy metals is also a critical factor. In this study, the concentration and type of species (ionic form) of Cu, Co, and Pb from two different soil samples on the Copperbelt Province in Zambia were investigated by modeling using Visual MINTEQ software.

Nov 21, 2017Open    AccessArticle

Use of Waste Frying Oil as C.I. Engine Fuel—A Review

Srinath Bharath Kumar, Uppinkere Shivaramu Sushma, Laxman Chandrasagar, V. Bheema Raju, Veena Devi
The research activities from past two decades have been vigorously done in the area of alternate fuel for CI engine and still it is on. The rapid industrialization and motorization airs is a serious threat to the draining of petroleum resources. Many investigations and studies revealed that the oils from the vegetable origin can be successfully implemented to the existing CI engines without an

Aug 16, 2017Open    AccessArticle

Performance of Egg-Shell and Fish-Scale as Adsorbent Materials for Chromium (VI) Removal from Effluents of Tannery Industries in Eastern Uganda

Sam Bamukyaye, William Wanasolo
The performance of egg-shells and fish-scales biomaterials in separating chromium (VI) ions from tannery effluents obtained from tannery industries in Jinja town of Eastern Uganda was investigated. Using crushed egg-shell and fish-scales as adsorbents, sorption tests were carried out to determine the effects of bio-sorbent concentration and particle size on chromium (VI) removal. The adsorbate concentration in the tannery effluent

Jul 25, 2017Open    AccessArticle

Adsorption of Anionic Dye Using Cationic Surfactant-Modified Kenaf Core Fibers

Intidhar Jabir Idan
Kenaf is a widely cultivated crop, particularly in the tropics. Kenaf core fiber (KCF) is a natural cellulose fiber derived from the plant and it is an important raw material for a variety of products. An attempt was made to chemically quaternized KCF (QKCF) as an adsorbent to increase adsorption affinity towards anionic reactive red-RB dye (RR). KCF was quaternized by treating with (3-chloro-2-hydroxypropyl) trimethylammonium chl

Feb 28, 2017Open    AccessArticle

Land Snails (Helix aspersa) as Bioindicators of Trace Element Contamination in Campania (Italy)

Antonella De Roma, Benedetto Neola, Francesco Paolo Serpe, Donato Sansone, Giuseppe Picazio, Pellegrino Cerino, Mauro Esposito
The occurrence of traces elements (V, Cr, Mn, Co, Ni, Cu, Zn, Cd, Hg, Sb, As, Tl, Pb, Sn, U and Se) in individuals of Helix aspersa from five sites of Campania region was studied. They are representative primary consumers in the terrestrial ecosystem and useful key indicator species to evaluate the environmental impact of chemicals on our lands. Each sample was

Oct 19, 2016Open    AccessArticle

Tire Combustion Emissions and Their Histochemical Implications on the Lung Tissues of Albino Mice

Josephate Bosire, Joshua Kibet, Thomas Kinyanjui, Benson Githaiga
Organic volatiles and particulate emissions from the combustion of tire are believed to contain eco-toxic substances including polycyclic aromatic hydrocarbons (PAHs) and various reactive radical species which may initiate serious respiratory ailments such as asthma and lung tumors. This study investigates the nature and toxicological effects of particulate soot from tire burning. To simulate environmental pollution, 12-week-old m

Apr 21, 2016Open    AccessArticle

Analytical Procedures and Method Validation for Determination of Chlorimuron Ethyl in Sediments

Ramom Rachide Nunes, Bruno Henrique Froes Santos, Maria Olimpia de Oliveira Rezende
The present work describes the validation of an analytical method for chromatographic determination of chlorimuron ethyl herbicide (compound of sulphonylurea group) in sediments, in according with Brazilian legislation, following the guidance and normative documents of INMETRO (DOQ-CGCRE-008) and ANVISA (Resolution RE no. 899-2003). The results show that the chromatographic method demonstrated to be selective, accurate, precision and linear over the concentration range of 5.0 - 1000.0 μg·L...