Biologia e Medicina

Abstrato

Role of chemically modified organic resin in selective separation of Hg2+ from other metal ions

AM Khan, S Khan, SA Ganai

Amberlite IR-400 was chemically modified using titan yellow as a chelating agent. Adsorption studies such as effect of concentration, pH, time and temperature on the resin has been studied. Distribution coefficient studies of metal ions in varied solvent systems have been explored. On the basis of Kd values, important binary as well as ternary separations Viz. Mn2+-Hg2+,Zn2+-Hg2+,Mg2+-Bi3+,Cu2+-Hg2+,Pb2+-Sn4+,Pb2+-Bi3+ & Cd2+-Hg2+,Ca2+-Hg2+-Zr4+,Cd2+-Hg2+-Co2+,Ni2+-Hg2+-Co2+,Pb2+-Hg2+-Co2+ and Ce3+-Hg2+-Co2+ has been achieved on columns of titan yellow modified Amberlite IR-400 resin. In order to check the selectivity and reproducibility of the method, different amounts of Hg2+ has been loaded in synthetic mixtures containing (Mg2+=2.43mg),(Ca2+=4.01mg),(Ba2+=13.74 mg), (Sr2+ =8.76 mg), ( Pb2+= 20.72 mg),(Zn2+= 16.54 mg),(Cd2+=11.24 mg). This material can be utilized for the removal and isolation of Hg2+ from waste water produced from industrial units.