REMOVAL OF TOXIC SUBSTANCES OF CHLOROFORM AND BENZENE BY CARBONIZED WOODY MATERIALS
REMOVAL OF TOXIC SUBSTANCES OF CHLOROFORM AND BENZENE BY CARBONIZED WOODY MATERIALS
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碳化木质材料去除氯仿和苯有毒物质
DOI：
10.2472/jsms.47.12appendix_249
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
M. Doi
中科院分区：
文献类型：
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作者：
S. Saka;M. Doi
随着全球环境污染的不断扩大，水中的三卤甲烷和空气中的芳香族有毒物质都在增加。因此，本研究致力于开发碳化木质材料，以专门去除这些污染物质，并探索开发更多功能化的新型木质碳化材料的潜力。通过元素分析发现，在氢气流下制备的碳化木质材料比在氮气流下制备的碳化木质材料还原得更多，特别是在550℃以上。两种炭化木质材料对水蒸气的吸附均随温度升高而降低，而对氯仿和苯的吸附反而增强，且在550℃以上，氢气流下的炭化木质材料的吸附优于氮气流下的吸附。具有这些特性的炭化木质材料被发现可以有效吸附水中的氯仿和大气中的苯。这些证据支持木质材料的氢化还原可有效增强其对水中氯仿和大气中苯的吸附能力的概念。
In a global expansion of environmental pollutions, trihalomethanes in water and aromatic toxic substances in air are both increasing. In this study, therefore, an effort has been made to develop carbonized woody materials to remove specifically these polluting materials and explore a potential of developing more functionalized new woody carbonized materials. It was found by elemental analysis that carbonized woody material prepared under hydrogen gas flow was more reduced, compared with that under nitrogen gas flow, particularly over 550°C. Both carbonized woody materials were decreased in vapor adsorption of water with increasing the temperature, whereas adsorption of chloroform and benzene was instead improved and over 550°C, carbonized woody materials under hydrogen gas flow was superior to that under nitrogen gas flow in their adsorption. Carbonized woody materials with these characteristics were found to adsorb chloroform in water and benzene in atmosphere effectively. These lines of evidence would support a concept that hydrogenative reduction of woody materials would be effective to enhance its adsorptivity against chloroform in water and benzene in atmosphere.