硅酸盐通报2017，Vol.36Issue(10)：3493-3497,3503,6.
利用粉煤灰制备分子筛及对水体中六价铬的吸附研究
Adsorption of Hexavalent Chromium by Zeolite Synthesized of Fly Ash
摘要
Abstract
Through wet method alkalinizing calcination , 4A Zeolite can be synthesized based on fly ash as main raw material.The effects of fly ash/alkali, calcination temperature and alcination time on 4A Zeolite were investigated .The results showed that 4A zeolite had been synthesized under fly ash/alkali of 1.0:0.8, calcination temperature of 700 ℃, calcination time of 1 h.At the same time, the removal efficiency of 4A zeolite adsorbing hexavalent chromium in water was studied .The experiments showed that 4 A zeolite had higher removal efficiency for hexavalent chromiumion in water , when 4 A zeolite dosage was 0.3 g, solution pH value was 6-7, adsorption time was 80 min and adsorption temperature was 10-25 ℃.The adsorption behavior of 4 A zeolite to sixvalent chromium accorded with Freundlich isotherm adsorption , mainly with physical absorption .Regeneration of 4 A zeolite was also studied , the results showed that , after 2 cycles, its adsorption capacity can still maintain more than 90％of the initial adsorption capacity .关键词
粉煤灰/湿法加碱煅烧/4A分子筛/吸附/六价铬Key words
fly ash/wet method alkalinizing calcination/4 A zeolite/adsorption/hexavalent chromium分类
资源环境引用本文复制引用
贺龙强,胡鹏,付克明..利用粉煤灰制备分子筛及对水体中六价铬的吸附研究[J].硅酸盐通报,2017,36(10):3493-3497,3503,6.基金项目
河南省科技发展计划项目(172102310469) （172102310469）
河南省高等学校重点科研项目(16B150009) （16B150009）
