环境工程学报2016，Vol.10Issue(10)：5373-5379,7.DOI:10.12030/j.cjee.201602128
NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能
Adsorption ability of methylene blue on NaOH activated chestnut-bud bio-char
摘要
Abstract
Activated bio-char (Na-BC) was prepared by the activation of chestnut bud bio-char (C-BC) using NaOH,and its adsorption behavior towards methylene blue in water was examined.The optimum activation conditions,namely the alkali carbon ratio (1 ∶ 4),activation temperature (800 ℃),and activation time (30 min),were determined by orthogonal testing.Under these conditions,the maximum adsorption capacity of Na-BC was 609.38 mg · g-1.The prepared Na-BC particles were characterized using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis.The BET surface area and the total pore volume were 1 563.78 m2 · g-1 and 1.452 cm3 · g-1,respectively.In the adsorption tests,the kinetic curves of Na-BC fit well with the pseudo second-order kinetics model,while the equilibrium isotherm data fit well with the Langmuir equation.Furthermore,the adsorption of methylene blue on Na-BC is a spontaneous endothermic reaction.Finally,following regeneration of Na-BC by alkaline solution and thermal treatment,Na-BC continued to exhibit a high adsorption capacity for methylene blue.关键词
栗苞生物质炭/亚甲基蓝/吸附/炭材料Key words
chestnut-bud bio-char/methylene blue/adsorption/carbon material分类
资源环境引用本文复制引用
昌晶,王丽萍,田红景..NaOH活化栗苞生物质炭对亚甲基蓝的吸附性能[J].环境工程学报,2016,10(10):5373-5379,7.基金项目
国家自然科学基金资助项目(51608291,51106077) （51608291,51106077）
山东省自然科学基金资助项目(ZR2015PE026) （ZR2015PE026）
北京化工大学化工资源有效利用国家重点实验室开放课题(CRE-2013-C-302) （CRE-2013-C-302）
