88
A. Geethakarthi
120. Yanping GD, Rockstraw A (2007) Physicochemical properties of carbons prepared from pecan
shell by phosphoric acid activation. Bioresour Technol 98:1513–1521
121. Yu LL, Zhong Q (2006) Preparation of adsorbents made from sewage sludges for adsorption
of organic materials from wastewater. J Hazard Mater B137:359–366