title: Removal of fluoride, arsenic and coliform bacteria by modified homemade filter media from drinking water.
abstract: An attempt was made to investigate the removal of fluoride, arsenic and coliform bacteria from drinking water using modified homemade filter media. Batch mode experimental study was conducted to test the efficiency of modified homemade filter for reduction of impurities under the operating condition of treatment time. The physico-chemical and biological analysis of water samples had been done before and after the treatment with filter media, using standard methods. Optimum operating treatment time was determined for maximum removal of these impurities by running the experiment for 2, 4, 6, 8, 10 and 12h, respectively. The maximum reduction of fluoride, arsenic and coliform bacteria in percentage was 85.60%, 93.07% and 100% and their residual values were 0.72 mg/l, 0.009 mg/l and 0 coliform cells/100ml, respectively after a treatment time of 10h. These residual values were under the permissible limits prescribed by WHO. Hence this could be a cheap, easy and an efficient technique for removal of fluoride, arsenic and coliform bacteria from drinking water.
authors.affiliation: Department of Environmental Science and Technology, Jimma University, PO Box 378, Ethiopia.
authors.forename: Rani
authors.initials: R
authors.lastname: Devi
authors.forename: Esayas
authors.initials: E
authors.lastname: Alemayehu
authors.forename: Vijender
authors.initials: V
authors.lastname: Singh
authors.forename: Ashok
authors.initials: A
authors.lastname: Kumar
authors.forename: Embialle
authors.initials: E
authors.lastname: Mengistie
mesh_terms: D001151:Arsenic / Q000302:isolation & purification*; D004755:Enterobacteriaceae / Q000302:isolation & purification*; D005374:Filtration / Q000379:methods*; D005459:Fluorides / Q000302:isolation & purification*; D014871:Water Microbiology
chemical_list: D001151:Arsenic; D005459:Fluorides