Biosorptive removal of Lead(II)  by the carbonaceous material  obtained from industrial waste lignin

R. A. Nandanwar; A. R. Chaudhari; J. D. Ekhe

Volume : II, Issue : VII, July - 2013

Biosorptive removal of Lead(II) by the carbonaceous material obtained from industrial waste lignin

R. A. Nandanwar, A. R. Chaudhari, J. D. Ekhe

Abstract :

For the removal of heavy metals such as lead from aqueous environments, adsorption process plays an important role. The applications of low cost sorbents have been widely studied for heavy metal ion removal from waste water. Natural materials have the potential to be used as low cost sorbents and are ecofriendly. However number of waste materials were investigated as the low cost adsorbent as a replacement for cost effective methods of removing lead ions from aqueous solution. This paper reports the study on performance of low cost adsorbent prepared from industrial waste lignin in removal of lead (II) ions. Lignin from pulp and paper industry was subjected to pyrolysis to obtain a porous carbonaceous material. The adsorption studies were carried out through various parameters such as adsorbent dose, pH and contact time. The maximum removal of Pb ions was observed at pH value 5 and contact time 3 hrs, also the adsorbent dose of 1g/50ml or 20g/L showed maximum uptake. The result of this study suggests that the industrial waste lignin could be a viable and potential sorbent for removal of Pb (II) from waste water. A series of isotherm studies was undertaken and the data evaluated for compliance was found to match with the Langmuir and Freundlich isotherm models.