Research On The Preparation Of Activated Carbon From Rubber Seed Hulls For The Removal Of Heavy Metal Lead In Wastewater

The purpose of this research was to study the lead?Pb?removal from synthetic wastewater by activated carbon from rubber seed shell by activation with Zn Cl₂ and C₆H₈O₇.The effects of the preparation variable,which were impregnation ratio?Zn Cl₂ and C₆H₈O₇:rubber seed shell?,activation temperature and activation time.This studying was to compare the iodine number and to select the best suitable condition for each kind of activated carbons and the efficiency for lead removal from synthetic wastewater by using each kind of activated carbon was also studied.The result was found that the activated carbon suitable with activating by Zn Cl₂ using ratio of rubber seed shell:Zn Cl₂=1:1 at activating temperature 800^OC for 1 hr.For activating by C₆H₈O₇ using of rubber seed shell:C₆H₈O₇=1:1 at activating temperature 800 ^OC for 1 hr.Then washed the residue of activated carbons with hot water and distiiled water.The iodine number of both activated carbons were 1113.1 and 519.4 mg/g,the surface area was 1574.46 and 698.76m²/g,respectively.The efficiency for lead removal at p H 6,7,8 and 9 were 99.77%,99.92%,99.65%and 99.92%for activated carbon with activating by Zn Cl₂ and by C₆H₈O₇ were 55.23%,84.60%,90.63%and 94.97%,respectively.From the preparation of activated carbon from agriculture wastes studies,it was found that activated carbon from rubber seed shell rind had the potential that could be developed for household as well as industrial use.