Adsorpsi Logam Berat Menggunakan Selulosa Xanthat dari Bagas Tebu

D. Iryani, N. M. Risthy, Simparmin Br. Ginting, Darmansyah Darmansyah
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引用次数: 2

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
Bagas Tebu黄原胶纤维素吸附重金属的研究
减少重金属废物污染最有效的方法是利用吸附剂进行吸附。甘蔗渣是对重金属具有较高吸附能力的材料之一。通过纤维素与二硫化碳(CS2)反应,将甘蔗渣转化为纤维素黄药,可提高其吸附量。纤维素黄原药的合成分为分离、碱化和黄原药三个阶段。在本研究中,以添加约180% (w/w)的二硫化碳(CS2)为原料制备纤维素草酸盐。反应温度分别为35℃、40℃和45℃。通过定量和定性分析,确定了温度对纤维素黄药取代度(DS)、聚合度(DP)和对Zn2+和Pb2+金属吸附量的影响。用扫描电镜(SEM)表征了纤维素黄原药的形态特征,用红外光谱(FTIR)表征了纤维素黄原药中的官能团。结果表明,35℃合成的纤维素黄药具有最高的DS、DP值,且吸附量高于40℃和45℃两种温度变化。对Zn2+和Pb2+的DS、DP和吸附量分别为0.389、299.27和48.353 mg/g和51.763 mg/g
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