Tag Archives: physico – chemical

Physico-Chemical Analysis of Soils Proximate to Artisanal Refining Plants in Southern Nigeria (Published)

The physico-chemical analysis of the impacted soil in Bodo community was carried out due to severe degradation of the environment and the aesthetic destruction of the terrestrial environment, the need to access the effect of non-conventional refining plants on the physico-chemical parameters of the soil. The pH, conductivity, total nitrogen, phosphate, cation exchange capacity and so on were analyzed using the standard method. From the result, it was observed that the impacted soil recorded mean and standard error as 54.1258 and 24.162 respectively while the non-impacted soil recorded 18.4176 and 6.323 respectively. Amongst the physical parameters, soil textural analysis revealed that the soil is mainly sandy loamy and small percentage of clay loamy. This therefore requires appropriate remediation measures to avoid infiltration into the groundwater.

Keywords: Impacted, artisanal, physico - chemical

MODELLING AND SIMULATION OF SOIL AND SEDIMENT EXPORTED THROUGH STREAM FLOW, CHANGES IN THE RIVER FLOW AND IN EXPORTED PHYSICOCHEMICAL PARAMETERS: LONG TERM ENVIRONMENTAL IMPLICATIONS AND MITIGATIONS STRATEGIES: CASE OF THE RIVER MEWOU (SOUTH MIFI) IN THE WESTERN TROPICAL HIGHLANDS OF CAMEROON (Published)

This study aims at determining the impact on water, agriculture and the environment of the soil constituents exported by the Mewou river on the southern Mifi through modeling of the changes in the river flow and in the exported physico-chemical constituents and to identify mitigate strategies. The average exported soils varied in t/km2 from 195.34 in 2011 to 256.02 in 2012. The flow variation of water and chemical constituents were each characterized by a general equation with a model:
Y = a*t9+b*t8+c*t7+d*t6+e*t5+f*t4+g*t3+h*t2+i*t+j
Environmental pollution was identified by water turbidity, 146.9 NTU, and in mg/l Organic matter 2.33, Cd2+ 11, Pb2+ 48.20, NH4+ 2.8, PT 0.84, Al3+ 0.593, NO2- 4.645. It is recommended that to mitigate soil loss, pollution and increase recharge of water table, the use of Vetiver (Chrysopogon zizanioides) hedges and by installation of wastewater treatment plants by each industry and the Municipal council for the household wastes.

Keywords: Chrysopogon zizanioides, Model, Pollution, physico - chemical, soil loss

PRODUCTION OF FLOUR TYPES FROM BLACK BEAN (PHASEOLUS VULGARIS) AND EFFECT OF PH AND TEMPERATURE ON FUNCTIONAL PHYSICO-CHEMICAL PROPERTIES OF THE FLOURS (Published)

The Black bean (Phaseolus vulgaris) seeds were processed into full fat flour, defatted flour, protein concentrate and protein isolate. The physico-chemical and functional properties of some of the flour samples were investigated. The effects of pH and temperature on some functional properties of the samples were also examined. The protein content of the concentrate and isolate had a higher value of 47.50% and 78.01% respectively compared with full fat and defatted flour that had 22.70 ± 0.00% and 24.51± 0.01% respectively. The protein concentrate and isolate have no fat and fibre content. The protein, carbohydrate, moisture, fat and fibre content had significant difference on different flour samples at p<0.05. The water absorption capacity had significant difference on the defatted and full fat flour at p<0.05. The effect of temperature on the water absorption of the flours increased with increasing temperature. There is decrease in wettability with increase in temperature as well foaming capacity which increased with increasing temperature. The effect of pH had higher wettability and foaming capacity. pH lowered water absorption and swelling index of the defatted and full fat flour. The black bean flour had good functional properties and thereby can be used in the food system.

Keywords: Black bean, Flour, functionality, physico - chemical, protein concentrate, protein isolate