【摘 要】
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Rapid industrialization leads to the generation of huge quantities of wastewater into the environment.Among these wastewaters,metals are particularly harmful due to their nature such as non-biodegrada
【机 构】
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Division of Semiconductor and Chemical Engineering,Chonbuk National University,Jeonju,Jeonbuk 561-75
【出 处】
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第七届国际分离科学与技术会议(Proceedings of the 7th International Conferen
论文部分内容阅读
Rapid industrialization leads to the generation of huge quantities of wastewater into the environment.Among these wastewaters,metals are particularly harmful due to their nature such as non-biodegradability and toxicity.Moreover they are expensive.Ruthenium is widely used as a catalyst in various industries,because of its specific physical and chemical properties.There is a need to regulate the concentration of Ru in wastewaters under tolerant levels.The aim of this study is to optimize the fabrication conditions of polyethylenimine (PEI)-modified bacterial biosorbent fiber (PBBF) [1].In this study,fermentation waste,Corynebacterium glutamicum biomass was used as a raw bacterial biomass and chitosan used as a matrix polymer.Ru-bearing acetic acid wastewater collected from Samsung BP Chemicals Co.,Ltd.was used as a model wastewater.To make PBBFs,a biomass-chitosan mixture was extruded through a spinneret and the fibers were coated with PEI and sequentially cross-linked with glutaraldehyde.The Ru uptakes by the PBBFs were affected by the blending ratios of biomass,chitosan and PEI [2].The sorption experiments exhibited that the Ru uptake by PBBF was about 4.9 times higher than that of commercial ion exchange resin,Amberjet 4400 (Fig.1).Coating of PEI on fiber surface was also dependent on the solution pH.Therefore,the PBBF fabricated at optimal conditions can be used as a high-performance immobilized biosorbent for Ru sorption from wastewaters.
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