DOI: 10.36347/sjet.2019.v07i08.003

Pages: 223-228

Arsenic (As) is an ubiquitous element found in the soils, rocks, natural waters and organisms. It is one of the most toxic elements and has been classified as a group I carcinogen for human. The removal of arsenic from groundwater is an important issue for environmental safety and human health. In this study, the performance of three commercial Titanium oxide and Ferric (hydr) oxide based media regarding removal of arsenite As(III) and arsenate As(V) from drinking water have been investigated. The study is carried out by column experiments on laboratory scale using arsenic spiked local tap water. The experimental work has studied the maximum bed volume and the maximum capacity which is in compliance with the recommended WHO standard (MCL) of 10 µg/L in the effluent. The achieved bed volume of granulated Titanium oxide based adsorbent (approximately 5700) is superior to that of Ferric oxide and Ferric hydroxide based adsorbents at EBCT of 3.5 minutes. At EBCT 1 min Ferric hydroxide based adsorbent exhibits highest bed volume (2300).