湿法冶金2019，Vol.38Issue(1)：28-34,7.DOI:10.13355/j.cnki.sfyj.2019.01.006
甘蔗渣基吸附材料对Cr(Ⅵ)的吸附特性研究
Comparison of Adsorption Characteristics of Cr (Ⅵ) on Three Kinds of Bagasse-based Adsorbent Materials
摘要
Abstract
In order to explore whether bagasse can provide material support for the field of heavy metal removal in wastewater, biochar is prepared from bagasse as raw material.The adsorption effects of common bagasse, bagasse charcoal and nitrogen charcoal bagasse on metal chromium in simulated wastewater were compared.The three adsorbents were characterized by SEM, FTIR and BET.The characterization results show that the specific surface area is characterized by sugarcane slag charcoal>nitrogen charcoal bagasse>ordinary bagasse;sugarcane slag charcoal and nitrogen charcoal bagasse have larger structural changes than ordinary bagasse, and the type and quantity of functional groups are also greatly increased.The experimental results show that the adsorption amount is represented by nitrogen charcoal bagasse>bagasse charcoal>ordinary bagasse.The Langmuir isotherm adsorption model can better reflect the adsorption process, and the adsorption is dominated by single-layer adsorption.The pseudo second-order kinetic equation better fits the adsorption process and is divided into two stages:rapid adsorption and slow adsorption.关键词
异氛围/甘蔗渣/炭化/吸附/Cr(Ⅵ)Key words
heterogeneous atmosphere/bagasse/carbonization/adsorption/Cr (Ⅵ)分类
资源环境引用本文复制引用
刘雪梅,马闯,吴凡,赵蓓..甘蔗渣基吸附材料对Cr(Ⅵ)的吸附特性研究[J].湿法冶金,2019,38(1):28-34,7.基金项目
江西省科技支撑计划项目(20161BBF60060) （20161BBF60060）
江西省自然科学基金资助项目(20151BAB207009) （20151BAB207009）
