Abstract: Increase in global population places a demand on fuel and protein sources therefore putting a strain on their supply. The demand for fuel products is currently met by increased usage of fossil fuel, a nonrenewable energy source. However, burning of fossil fuel has challenges such as the release of greenhouse gases associated with negative environmental impacts. To overcome these challenges, attention has been given to renewable energy sources as biodiesel, a biofuel that has...
Abstract: In Africa, intercropping of some legumes with cereal crops has been found to cause remarkable reduction of Striga infestation and improved production of cereal crop. Desmodium uncinatum controls Striga infestation in intercrop with cereals through an allelopathic mechanism, which involves post-germination growth inhibitors exuded from the roots. Allelopathy is a natural and environmentally friendly technique, which has a potential to be a new approach for weed control. A standardiz...
ABSTRACT: Most of the available water sources such as streams, rivers and wells have been impaired by anthropogenic activities thereby rendering them unsafe for consumption. This has made access to clean potable water a mirage to communities situated in the semi urban areas, hence, increasing their daily risk of contracting water borne diseases. This work initiates the treatment of these water sources with dried duckweed plant. The duckweed plant was prepared and incorporated into a ceramic w...
Extraction of oil from plants and animals’ source for production of fat liqour to render the leather soft by a sort of lubricating the fibres after tanning is being a practice for long. However, the oils and fats that were formerly used almost exclusively are now becoming scarce and expensive, thus there are need to source for alternative and readily available /environmentally friendly agents for this purpose of imparting the physical properties of leather. In this research extraction ...
ABSTRACT Zeolite crystals were synthesized by mixing sodium silicate and sodium aluminate to obtain aluminosilicate gel which was further treated hydrothermally to obtain the final product. The zeolite crystals were characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD result identified the synthesized crystals as zeolite z; additional evidence was provided by the SEM images which showed that the zeolite crystals were disc-shaped and the particle sizes rang...
ABSTRACT The total alkaloid, tannins contents and antiulcer activity of the extracts from four selected medicinal plants were investigated. The total alkaloids content (TAC) was evaluated according to the chloride colometric method in which atropine was used as standard. While the total tannins content (TTC) was also determined using Folin Ciocalteau assay in which gallic acid was used as a standard. The antiulcer activity of the extracts was investigated using the ethanol induced model in wi...
ABSTRACT The highly nucleophilic bridging sulfide centers in bis(μ-sulfido)tetrakis(triphenylphosphine) diplatinum(II), [Pt2(µ-S)2(PPh3)4] enables the incorporation of any organic functionality (R) through facile monoalkylation to form cationic complex [Pt2(µ-S)(µ-SR)(PPh3)4] + . The organic electrophiles; N,N’-(2-dichloroethyl) piperazine-4-carboxi-amine, N-(2-chloroethyl) morpholine4-carboxi-amine, and N-(2-chloroethyl)-1-methylpiperazine-4-carboxi-amine derived from isocyanate were s...
ABSTRACT Production of carbon black from novel sources like spent automobile tyre, anthracite coal, furnace soot and graphite rod and subsequent use in the production of offset printing inks has been investigated. Carbon black from these sources were obtained by pyrolysis of shredded spent tyre and coal samples at 750-900o C in an electrical furnace, isolation of furnace carbon black and graphite rod from dry cell, drying and pulverization of the resulting samples. Acid demineralization of th...
ABSTRACT Palladium catalysed synthesis of substituted 2-[acetyl(phenylsulphonyl)amino]-3- methylbutanamide (176) is reported. The intermediate 2-[acetyl(phenylsulphonyl)amino]-3- methybutanamide (175) was obtained by the reaction between 2-[acetyl (phenylsulphonyl)amino]-3-methybutanoic acid chloride (175) and ammonia. Substituted 2- [acetyl (phenylsulphonyl)amino]-3-methylbutanamides (176a-f) were obtained by coupling 2-[acetyl (phenylsulphonyl)amino]-3-methylbutanamide (175) with various re...
ABSTRACT The roots of Dennettia tripetala and Milicia excelsa were analyzed for the presence of phytochemicals. Five different solvents, which include methanol, ethanol, ethyl acetate, butanol and water, were used for the extraction of the phytochemicals.The root of Dennettia tripetala contained alkaloids, terpenoids, flavonoids, saponins, phenols, steroids and glycosides in varying degrees of abundance in the different solvents with tannins not detected in all the solvents. Milicia excelsa c...
ABSTRACT The divalent metal chelates of Mg,Co,Cu and Zn with 4-acetyl (hpmap), 4- benzoyl(hpmbp),4-butyryl(hpmbup),4-capyroyl(hpmcp),4-propiony (hpmprp) and 4-palmitoyl(hpmpp) derivatives of 1-phenyl -3-methyl pyrazol-5-one have been synthesized and characterized by UV ,IR, and conductivity measurements. It is shown that the ligands behaved like bidentate enols, all forming neutral chelates with the metal ions , bonding through oxygen of the enolic hydroxyl group and /or the oxygen atom of th...
ABSTRACT A survey of industrial pollution in Anambra state WFS carried out between February A990 and June 1997, The survey showed that Idemili, Onitsha and Nnewi Local Government Areas h3ve the greatest concentration of industries* Some of these industries.: discharqe their wastes into the environment with very little or no tre3tment. ~histochemical characteristics of rivers godo, Oji and Ebenebe Lake were determined, The concentrations of some water-quality-parameters vi7, dissolved oxygen (...
Abstract This study is aimed at determining the concentration of gold in the gold ore in lujinjimubende district. Currently investing in gold mining is taken as a riskyinvestmentbecause people are not sure of the concentration of gold in lujinji and also the depth where gold concentration is high. The results of this research gave the concentration of gold in lujinji and also the depth of high concentration from the surface, which eased the mining activity by extracting gold at a known height...
ABSTRACT This study focuses on the temporal monitoring and analysis of wastewater from Kira Tocvn Council. The distribution of the chemical constituents major and minor is determined and compared with National Environment Management Authority (NEMA) Standards of wastewater discharge on land and into water bodies. The obtained results indicated that most of collected wastewater samples exceeded the acceptable limits set by standards used for most parameters determined. The wastewater parameter...
Table of ContentsAcknowledgementDeclaration.Dedication ivAbstractList of Figures yiNList of Tables ixCHAPTER ONE 11.1 Background 11.2 Problem statement 31.3 objectives 31.3.1: general objective 31.3.2: specific objectives 31 .4Justification 41.6 Scope of the study 41.7 Significance of the study 4CHAPTER TWO 5LITERATURE REVIEW 52.0. General description of gold 52.1: An overview of gold extraction process 62.2: Researches and developments 82.3: Artisanal and small-scale Gold mining 122.3.1: The...