Volume-14 ~ Issue-11 ~ November 2021

Abstract: In an aqueous phase reduction of Mn(VII) using Na2S2O5, the absorbance of Mn(VII) was monitored at 349 nm using a Unicom UV/Vis Spectrophotometer at different temperatures (303, 308, 313, and 323 K) to study the effect of pH on the reductant at pH 2, 4,6, 7, 8,10,12 and 14 while, the effect of concentration was also considered by varying the concentrations of the reductant (i.e. 4, 6, 8, 10 and 12 mg/L) over a pH of 5,9, 298 K and 5 minutes with concentration of Mn(VII) set at 10mg/L. The kinetic results showed that the reaction was first order with respect to Mn(VII) with the rate equation......

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Abstract: Context: The physicochemical and mineralogical composition of cow milk is variable according to the animals' diet, environmental conditions and the lactation period. Samples of raw cow milk collected locally by semi-sedentary agro-pastoralists and mobile pastoralists of North Benin were analyzed in order to evaluate their physicochemical and mineralogical characteristics and to highlight their dietary properties. Materials and methods: The milk samples were collected in sterile glass bottles and transported at room temperature in the dark to the laboratory and then subjected to physicochemical and mineralogical analyses. Parameters such as pH, acidity, density, fat and dry matter content, lactose content and viscosity were determined. Minerals and trace elements......

Keywords: Raw milk, cow, physicochemical analyses, mineralogical composition.

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Abstract: Industrial, agricultural and domestic activities of humans have affected the environmental system, resulting in drastic problems such as global warming and the generation of waste water containing high levels of pollutants. Water pollution due to organic contamination is serious issue because of toxic chemicals and carcinogenic nature of the pollutants. Among various water treatment methods, adsorption is supposed as the best one due to its inexpensiveness. The utilization of all such materials as adsorbents for the treatment of waste water can reduced waste and minimize cost.
Byproducts from agricultural, household and industrial sector have been recognized as sustainable solution for waste water treatment. They allow.......

Keywords: Adsorbents, Activated carbon, COD, BOD, DO, Hardness of water etc

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