Adsorpsi Logam Berat Menggunakan Selulosa Xanthat dari Bagas Tebu

Dewi Agustina Iryani, Nisa Meutia Risthy, Simparmin Br. Ginting, Darmansyah Darmansyah

Abstract


The most effective way to reduce the pollution of heavy metal waste is the adsorption process using an adsorbent. Sugarcane bagasse is one of materials that has high affinity to absorb heavy metals. The adsorption capacity of sugarcane bagasse can be increased by converting it into cellulose xanthate by reaction of cellulose with carbon disulfide (CS2). Synthesis of cellulose xanthate consists of three stages, i.e isolation, alkalization, and xanthation. In this study, the preparation of cellulose xhantate was conducted by adding carbon disulfide (CS2) about 180% (w/w). The temperature of xhantation reaction was varied  at 35°C, 40°C and 45°C. The effect of temperature reaction into degree of substitution (DS), the degree of polymerization (DP) and the metal adsorption capacity of cellulose xanthate for Zn2+ and Pb2+ were determined by quantitative and qualitative analyze. Morphological characteristics of cellulose xanthate was characterized by SEM and the functional groups contained in the cellulose xanthate was characterized by FTIR. The result showed that cellulose xanthate synthesized at temperature of 35°C have a highest value of DS, DP, and the adsorption capacity higher than two variations of  temperature (40°C and 45°C). The value of DS, DP, and the adsorption capacity is 0.389,  299.27, 48.353 mg/g for Zn2+ metal and 51.763 mg/g for the metals Pb2+, respectively


Keywords


Adsorben, cellulose xanthate, heavy metal, sugarcane bagasse

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DOI: https://doi.org/10.23955/rkl.v14i1.12520

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