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Characteristics various types of activated bamboo charcoal and their potential as adsorbents 1) Department of Chemistry, Faculty of Science and Technology, Universitas Islam Negeri Walisongo, Semarang, Indonesia Abstract Synthesis of bamboo charcoal from various type bamboo has been carried out at a temperature of 400oC with a yield of 19.67%- 30.86%- 33,16% and 27,34 respectively for Tali bamboo, Javanese bamboo, Ori bamboo and Yellow bamboo. Activation of bamboo charcoal is carried out chemically using H3PO4 and KOH. Activated bamboo charcoal was characterized using reference to SNI 06-3730-1995 regarding technical activated charcoal including water content, volatile content, total ash content, carbon content, iodine absorption and absorption of methylene blue. Activated bamboo charcoal also characterized its functional groups using FTIR, morphology using SEM and surface area. The activation process is able to reduce water content, ash content, volatile matter content thereby increasing carbon content which has the potential to be used for adsorption, and this is evidenced by the increase in the value of iodine absorption and absorption of methylene blue. From the FTIR result activated bamboo charcoal shows an absorption at 1500-1600 cm-1, indicating the presence of a C=O bond, the hydroxyl group which is bound O-H (3400-3500 cm-1) and CO (1300-1400 cm-1) which is capable of absorb. The morphological characteristics of activated bamboo charcoal are more porous than non-activated bamboo charcoal, thereby increasing its surface area and adsorption ability. From the results of the surface area data, it was found that the 4 types of activated bamboo charcoal produced a higher surface area, and activation using KOH was more effective than H3PO4 in increasing the surface area of activated bamboo charcoal. Keywords: Bamboo, activated charcoal, adsorbents Topic: Materials Sciences: Synthetic and Characterization |
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