Evaluation of laterite as filter media to remove arsenic from groundwater
نویسندگان
چکیده
Arsenic in drinking water has a chronic effect on humans and thus is global health issue. Most people of Pakistan use groundwater for drinking, consequently, prone to As toxicity. The objective this study was evaluate laterite as an adsorbent media removal, subsequent preparation low-cost filter. Laterite tested adsorption capacity through batch sorption experiments fitting the Langmuir model. Two identical filters were prepared using variable particle size substrate material ratios (sand, activated carbon, brick chips). contaminated poured daily collected at bottom analysis. samples analyzed atomic absorption spectrophotometer coupled with hydride generation assembly. Other quality parameters viz., electrical conductivity (EC), pH, chloride, total suspended solids (TSS), dissolved salts (TDS), nitrate, calcium, magnesium, sodium, potassium, carbonate, bicarbonate sulfate contents also tested. Filter 1 had removal efficiency from 83 93 %, while 2 67 85 % efficiency. remained under WHO recommended limits indicating no harmful addition filtered by substrates. It appears that may serve economical option groundwater.
منابع مشابه
Arsenic removal from real-life groundwater by adsorption on laterite soil.
The adsorption characteristics of arsenic on laterite soil, a low-cost natural adsorbent, were studied in the laboratory scale using real-life sample. The studies were conducted by both batch and continuous mode. Laterite soil was found to be an efficient adsorbent for arsenic removal from the groundwater collected from arsenic affected area. The initial concentration of arsenic in the sample w...
متن کاملAdvances in Groundwater Treatment to Remove Mtbe
We have developed two significant modifications to conventional airstripping of MTBE from contaminated groundwater. The first modification involves application of thermodynamic principles to improve by at least a factor of three the overall mass transfer efficiency, obtaining very high removal efficiencies, using a combination of higher operating temperatures (40-60 C) and vacuum pressures (fro...
متن کاملARSENIC AND BACTERIOPHAGE MS2 REMOVAL FROM GROUNDWATER BY NANOPARTICULATE ALUMINUM OXIDE COATED GRANULAR FILTER MEDIA: A PILOT-SCALE EVALUATION ON THE EFFECT OF PH AND COATING QUANTITY by
متن کامل
Adsorption of arsenic(III) and arsenic(V) from groundwater using natural siderite as the adsorbent.
Batch and column tests were performed utilizing natural siderite to remove As(V) and As(III) from water. One hundred milligrams of siderite was reacted at room temperature for up to 8 days with 50 mL of 1000 microg/L As(V) or As(III) in 0.01 M NaCl. Arsenic concentration decreased exponentially with time, and pseudoequilibrium was attained in 3 days. The estimated adsorption capacities were 520...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Serbian Chemical Society
سال: 2021
ISSN: ['1820-7421', '0352-5139']
DOI: https://doi.org/10.2298/jsc200310057m