The Effect of Geometry Bond in Orbital d (Co and Ni) Biosorption with Ligands Using Activated Seaweed Bioadsorbent Neny Rasnyanti M Aras(a*), Agus Salim (a), Hatifa (a)
Community College of Manufacture Industry Bantaeng
Abstract
One of the preliminary efforts to deal with the problem of waste containing heavy metals is to use biomass as an adsorbent. Bioadsorbents are widely used because of their ability to adsorb metals through the chemical bonds. The aim of this research is to make bioadsorbent from acid activated Euchemma Cottonii seaweed then it contacted with Co and Ni metals. The tests carried out included testing the levels of heavy metals Co and Ni using Inductively Coupled Plasma (ICP) and FTIR. From the results of this study, it was found that the contribution of the bond formed between the metal and the bioadsorbent affects the capacity and optimum time for metal absorbed by the bioadsorbent, which has been never revealed correlation both of them. Co has a larger metal adsorption capacity (161 mg/g) with optimum time of 150 minutes while Ni has an adsorption capacity of 91 mg/g with with optimum time of 90 minutes. The mechanism of metal absorption by bioadsorbents was confirmed by shifting functional groups through FTIR that occurred between bioadsorbents before and after contact with metals mainly in-OH, S=O, C=O, C-O-C, -NH the active groups.
Keywords: Bioadosorbent, activated seaweed, geometric bond, orbital d
