DAAGU INTERNATIONAL JOURNAL OF BASIC AND APPLIED RESEARCH

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WATER QUALITY ASSESSMENT FOR DRINKING PURPOSE AS AN IMPLICATION TO HUMAN HEALTH IN ARSIS AREA, AFAR, NORTHEASTERN ETHIOPIA

SHAHNAWAZ HUSAIN

Safe water is a prerequisite for human health and any developmental activities. Water-related diseases are caused by insufficient safe water quality and quantity. The study area is located in the east-central Afar depression which affected mainly by salinity and fluoride. The main objective is to investigate the water quality of the area as an implication for human health. The exposed lithologies of the area are consist of basalt, scoriaceous basalt, and alluvial deposits. These are affected by normal faults with NNE-SSW and NNW-SSE orientation. A total of three water samples are collected from spring, borehole, and river water points and analyzed for about 31 parameters. As a result, the spring water has very low water quality followed by borehole but the river water is freshwater and portable for domestic uses. The long-term effect of the spring water can be kidney and heart diseases, laxative and constipation effects, cardiovascular disease, kidney damage and disinfection, hypertension, headache, coronary artery disease, diabetes, adrenal insufficient, and hyperkalemia. The water types of the springs, borehole, and river are Na-Cl-SO4, Na-HCO3, and Ca-Na-HCO3-SO4, respectively. The water quality index (WQI) shows the spring water is not recommended for any domestic purpose but the river water needs treatment for the turbidity and total iron concentrations only. As the finding shows, the spring water is strongly recommended to protect from any consumers.

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STUDY ON REMOVAL OF CONGO RED DYE ONTO CLEODENDRUM FRAGRANS LEAVES: OPTIMIZATION OF PROCESS PARAMETERS USING RESPONSE SURFACE METHODOLOGY (RSM)

SHAHNAWAZ HUSAIN

The Objective of the present study is to remove Congo red (CR) dye onto Cleodendrum fragrans leaves powder as biosorbent in a batch study. The effect of process variables used were contact time, solution pH, initial CR dye concentration, biosorbent dosage, average particle size of the biosorbent and temperature. The kinetic, isotherm and Thermodynamic studies of removal of CR dye onto Cleodendrum fragrans biosorbent were investigated. In the present study Congo red dye uptake was found to be 13.31mg/g by using Cleodendrum fragrans leaves as biosorbent. Response surface methodology (RSM) was adopted to study the correlations among the process variables affecting the process and to optimize the process to give high dye removal. The maximum removal efficiency was predicted to be 93.54% at a temperature of 303.48 K, solution pH of 3.99, initial dye concentration of 19.63 mg/L, biosorbent dosage of 1.76 g.

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SHAHNAWAZ HUSAIN
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SHAHNAWAZ HUSAIN
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SHAHNAWAZ HUSAIN
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SHAHNAWAZ HUSAIN
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