Highly dispersed Cobalt doped ZnS nanostructures were successfully fabricated on the surfaces of graphene sheets via a simple hydrothermal method. X-ray diffraction (XRD), photocurrent spectroscopy (XPS), Raman (RS), Fourier transform infrared (FTIR) and Scanning electron microscopy (SEM) utilized to analyze structural characteristics cobalt decorated with

Abstract Many fresh water bodies face a great challenge of an invasive weed called hyacinth (WH) which has impacts on the environment, ecology, and society. Food Agriculture Organization (FAO) estimates that over nine million tons Fish wastes (FW) are thrown away each year. The fish waste generated poses environmental health hazards because in most cases it is either disposed into pits or discarded onto open grounds. Both WH FW potential substrates for biogas production. However, utilization...

<abstract><p>Excess fluoride in drinking water causes both dental and skeletal fluorosis among other problems. As such there is need to develop affordable easily accessible techniques for removal from water. This work assessed surface modified diatomite mixed with brick removal. Diatomite samples were using aluminium hydroxide the mixture was optimized through response methodology (RSM) Box-Wilson central composite design. Batch experiments showed that, individually, a 28 g/L...

Background The main process limitation of microalgae biofuel technology is lack cost-effective and efficient lipid extraction methods. Thus, the aim this study was to investigate effectiveness efficiency six caprolactam-based ionic liquids (CPILs) namely, Caprolactamium chloride, methyl sulphonate, trifluoromethane sulfonate, acetate, hydrogen sulphate trifluoromethane-acetate—for lipids from wet dry Spirulina platensis biomass. Of these, first three are novel CPILs. Methods were formed by a...

Possible refining of crude hexane extract (CHE) from pyrethrum flowers and further Pyrethrum Board Kenya (PBK) pale product is investigated with both liquid supercritical carbon dioxide. The experiments were carried out in a small pilot plant 200 mL extractor three cyclonic separators series. To understand the dynamics pyrethrin extraction, CHE was extracted single step; concentration found to be improved 0.16 0.50 g/g. effects temperature pressure on quality studied at 29 degrees C 80 bar...

Croton megalocarpus oil is a non-edible with potential to produce biodiesel in East Africa. Transesterification of the and methanol fatty acid methyl ester (FAME) was studied using heterogeneous alkaline earth BaO, SrO, CaO, Nano Reoxidised CaO (CaO RO), MgO, BeO catalysts; by conventional heating microwave irradiation. Catalysts were characterised surface area, porosity, basic strength basicity. FAME yield obtained through Gas chromatography. Central Composite Design (CCD) used optimise...

Aims: To synthesize and characterize six caprolactam-based ionic liquids (CPILs) by combination of caprolactam with different organic inorganic Brønsted acids that can be utilized for lipid extraction from microalgae.
 Study design: Experimental design include quantitative qualitative.
 Place duration study: The study was done at Department Chemistry & Biochemistry, School Sciences Aerospace Studies, Moi University (Kenya) between November 2020 May 2021.
 Methodology: Six...

Regardless of the efforts to encourage use renewable energy sources such as solar and biogas in developing countries, their adoption is still low especially Kenya. The purpose this research was investigate effects accessibility on household fuel choices Kenya among households rural peri-urban areas. Random sampling technique used select a sample 199 county Uasin Gishu. Data for study were collected using structured questionnaire analyzed different quantitative qualitative statistical...

Abstract Highly dispersed Cobalt doped ZnS nanostructures were successfully fabricated on the surfaces of graphene sheets via a simple hydrothermal method. X-ray diffraction (XRD), photocurrent spectroscopy (XPS), Raman (RS), Fourier transform infrared (FTIR) and Scanning electron microscopy (SEM) utilized to analyze structural characteristics decorated with Co x Zn 1−x SrGO Nanostructures (NSs). UV-visible optical absorption (UV-vis) studies conducted investigate their properties. In...

Transesterification kinetics of Croton megalocarpus oil to produce fatty acid methyl esters (FAME) was studied using homogeneous NaOH and heterogeneous alkaline earth Nano MgO, CaO, Reoxidized SrO, BaO catalysts. Characteristic surface, bulk, chemical properties the catalysts were obtained which included surface area, pore properties, scanning electron micrography, X-ray diffraction, basic strength, basicity. The catalyst porosity varied as MgO > CaO CaO-RO SrO basicity RO MgO. Catalysts...