摘要
对荞皮改性纤维的吸附能力及除铅效果进行研究.结果表明:荞皮纤维改性后对Pb2+的吸附能力比改性前提高了77.03%,对Pb2+的饱和吸附容量为203.99μg/g;用5%的氨水溶液再生,经两次再生Pb2+的饱和吸附容量为177.854 5μg/g,平均再生率为90.08%;甘草中除Pb2+的能力由未改性荞皮的6.225μg/g提高到改性荞皮的40.11μg/g,提高了544.3%.
Adsorbability of modified fiber of buckwheat husk and its lead removal effect were studied. The result showed that compared with unmodified buckwheat husk fiber, the lead Pb2＋ removing ability by modified one was improved by 77.03%, the saturated adsorptive capacity of Pb2＋ was 203.99μg/g and it could be reproduced with ammonia solution of 5%（m/v）. After two times regeneration, the saturated adsorptive capacity of Pb2＋ was 177. 854 5μg/g, the average regeneration rate was 90. 08%. In liquorice solution, the removing ability of Pb2＋ was improved from 6. 225μg/g for raw buckwheat husk to 40. 11 μg/g for modified buckwheat husk, improving rate being 544. 3%.
出处
《兰州理工大学学报》
CAS
北大核心
2009年第5期74-76,共3页
Journal of Lanzhou University of Technology
基金
教育部春晖计划项目(Z2004-1-62014)
关键词
荞皮纤维
改性
铅离子
吸附能力
甘草
buckwheat husk fiber
modification
lead ions
adsorptive capability
liquorice
