“…Such materials are, ferromagnesian minerals and magnesium hydroxide (Rhoades et al, 1970), hydrous oxides and iron aluminium (McPhail et al, 1972), allophane (Su & Suarez, 1997), montmorilonite, illite and kaolinite (Chieng & Chong, 2012;Keren & O' Connor, 1982), humic acids (Gu & Lowe, 1990), fly ash and coal (Polat et al, 2004), magnesia (Dionisiou et al, 2006), activated carbon (Kluczka et al, 2007) and selective resins as Amberlite IRA-743 (Demircivi & Nasun-Saygili, 2008). …”