Articles

Browse our published research articles

140 articles
121
Research Article

Effect of annealing conditions on the magnetic, optical and photocatalytic properties of the perovskite-type material La1-x(Bix)FeO3-δ

Ibrahim A.*, Bice S. Martincigh, Sreekantha B. Jonnalagadda

Novel perovskite-type nanomaterials with the composition La1-x(Bix)FeO3-δ (where x = 0.5 and 0.2) were synthesized by using a modified citric acid sol-gel route and annealed at 900 °C in (1) in air (LB0.5FO-air and LB0.2FO-air), and (2) in Argon atmosphere (LB0.5FO-Ar and LB0.2FO-Ar). Scanning electron microscopy and powder X-ray diffraction analysis of the powders showed that they contain cry...

Jun, 2016 pp. 106-112
122
Research Article

Determination of the Suitability of Locally Available Aluminum Scrap for Production of Motorcycle Brake Shoe

Adeyemi S. S.*, Sogbesan A. O., Adetunji A. R., Isadare D. A, Olawale J. O., Adekoya O., Adeyemo O.

High demand for motorcycle and its spare parts in the country necessitate production of some of its parts locally to  conserve foreign exchange and create jobs. Brake shoes are one of the frequently replaceable parts in the motorcycle,  and hence, need for domestication to reduce pressure on importation. In this paper, aluminum scraps were obtained  from two local aluminum companies and were chara...

Dec, 2021 pp. 107-115
123
Research Article

Characterization of hematite nanoparticles synthesized via sol gel method in tween 20 surfactant solution

IBRAHIM ABDULKADIR*, Bice S. Martincigh

Samples of hematite (α-Fe2O3) nanoparticles (HTW) have been synthesized through a modified sol-gel method in Tween 20 (a polysorbate surfactant), separate portions of the powders were annealed at three different temperatures (400, 500 and 600 °C). The samples were characterized by X-ray diffraction (XRD), high-resolution electron microscopy (HRTEM), Mössbauer spectroscopy and by means of a vibr...

Jun, 2015 pp. 108-113
124
Research Article

Preparation and Assessment of Biodegradable Polyurethane Foams from Sugar Bagasse

Lawrence Ekebafe*, Akpa F. A. Omolade, Olugbemide David A.

This study is focus on producing polyurethane foams that would have same or better properties compared to the conventional and still be able to undergo biodegradation upon disposal. Microfibers were isolated sequentially using nitric acid, sodium hydroxide and hypochlorite bleaching under different extraction conditions. The cellulose microfibers extracted were characterized for their compositi...

Dec, 2020 pp. 109-118
125
Research Article

Exploiting the remediation capacities of microbiological strains and membrane technologies for the treatment of textile dyes effluent

Shinkafi M. S.*, GALADIMA M.S, Mohammed I. U., Hassan A. S., J. M. Hayatu

The present work evaluates the potentials of using indigenous microbial strains isolated from wastewaters of an effluent treatment plant of a Textile Industry and the feasibility of employing nanofiltration (NF) membrane and reverse osmosis (RO) systems as an alternative treatment method of textile wastewater discharged from textile industry. Experiments were performed in a laboratory - scale s...

Jun, 2016 pp. 113-122
126
Research Article

Elucidation of microbial decolourization and degradation efficiency of recalcitrant-carcinogenic azo dye congo red by novel bacterial strains

Shinkafi M. S.*, GALADIMA M.S, Mohammed I. U., Hassan A. S., J. M. Hayatu

Novel bacterial strains capable of decolorizing textile dyes were isolated from dye contaminated soil obtained from the vicinity of African Textiles Industry Challawa, Kano - Nigeria. The Carcinogenic azo dye Congo red used widely in various industrial processes poses terrific environmental concern, causing major health problems to human beings. In the present study, decolourization of Congo re...

Jun, 2015 pp. 114-123
127
Research Article

Mechanical Modelling of Bamboo Sawdust/polyester Composites Fabricated by Hot Pressing Method

Ofem Michael Ikpi*, Ubi Paschal Ateb, Christian Christian Adi, Ekpe Ubong Pius

Bamboo fibres of 1 to 3 mm sizes were milled to particle size of approximately 100μm using a hammer mill. The  bamboo sawdust (BS) was chemical treated using NaOH of concentration 6 % wt/v for 72 h at room temperature.  Dried bamboo sawdust was mixed with polyester at different weight ranging from 0 % to 24 % wt. %. The com posites were tested for the tensile properties. Theoretical mechanical equ...

Dec, 2021 pp. 116-125
128
Research Article

Comparative synthesis of sodium silicate from rice husk and kaolin

Ajayi O. A*, Mamman J., Adefila S. S.

Sodium silicate in powdered form was successfully synthesized from both rice husk ash and Kankara kaolinite clay. The impure nature of both monomer and NaOH used does not seems to hinder the depolymerization reaction viz-a-viz product formation. The crystallinity of sodium silicate produced tends to increase with reaction time, temperature, and Na2O/SiO2 ratio. About 93% crystallinity for as sy...

Jun, 2016 pp. 123-129
129
Research Article

The possible modulatory effects of kolaviron on arsenite-induced hepato-toxicity in experimental rats

OLUFUNMILAYO HANNAFI O*, THEODORE AKUNNA

The effects of kolaviron , an active component of Garcinia kola seeds were investigated on sodium arsenite-induced hepatotoxicity in rats. Administration of a single dose of sodium arsenite (10mg/kg body weight) orally, increased the activities of serum marker enzymes-Aspartate aminotransferase (AST) and Alanine aminotransferase (ALT). This also led to increase in lipid peroxidation and reducti...

Jun, 2015 pp. 124-129
130
Research Article

Properties of chemically modified Baobab pod/Sisal Fibre reinforced Low Density Polyethylene Hybrid Composite

ISA M. T*, Shehu U., Aderemi B. O., Bello T. K., Audu H. I., Shittu U. M., ATTA A. Y

The present study determined the effect of sodium hydroxide (NaOH) treatment on the properties of baobab pod/sisal fibres reinforced low-density polyethylene (LDPE) hybrid composites. Used to treatment the fibres, were different concentrations of NaOH 2 -10 wt% at 2 wt% interval. The hybrid composites were compounded using two roll mills machine and compressed in a mold using hydraulic press a...

Jun, 2016 pp. 130-135