removal of lindane (γ ̶ hch) by using natural zeolite in industrial wastewater

Research Article
Manohar Kata, Ramana G.V*
Adsorption; Lindane; Persistent; Organochlorine pesticide; Zeolite

Lindane (γ–HCH) is an organochlorine insecticide that has been widely used in developing countries. It is known to persist in the environment and can cause serious health problems. One of the strategies adopted to remove lindane from the environment is remediation using adsorption technique. Zeolite has been used for the removal of lindane from an aqueous solution in batch sorption technique. The present Thomsonite zeolite is characterized by scanning electron microscopy (SEM) with EDX. Adsorption of lindane on natural zeolite is studied as a function of contact time, adsorbent dose, initial concentration and pH. Lindane concentration can be reduced down to the lower level of 0.001 mg L-1under the optimum condition (with solid/liquid ratio of 1:100 and the contact time 3 h and pH 6.8) when initial lindane concentration 10 mg L-1is employed, and the maximum lindane adsorption capacity is 2.31 mg g-1.