黄粉虫粪基吸附剂的制备工艺优化及其吸附性能  

Optimum of preparation and absorption properties of adsorbent from Frass of Tenebrio Molitor

作　　者：熊晓莉[1] 王超[1,2] 李宁[1] XIONG Xiaoli WANG Chao LI Ning(Key Lahoratory of Catalysis ＆ Functional Organic Molecule of Chongqing, College of Environment and Resource, Chongqing Technology and Business University, Chongqing 400067, China Citic Water Co. Ltd, Chengdu 610100, China)

机构地区：[1]重庆工商大学环境与资源学院催化与功能有机分子重庆市重点实验室,重庆400067 [2]成都蓉信水务产业有限公司,成都610100

出　　处：《环境工程学报》2016年第11期6720-6726,共7页Chinese Journal of Environmental Engineering

基　　金：重庆市科学技术委员会科技攻关(应用技术研发类)项目(CSTC2012gg-yyjs20003)

摘　　要：黄粉虫养殖过程中,会产生大量的虫粪。用黄粉虫粪为原料制成吸附剂,并用于亚甲基蓝模拟废水的处理。研究在不同磷酸浓度W、浸泡时间t1、活化温度T、活化时间t2等制备因素影响下,吸附剂对亚甲基蓝的吸附能力。结果表明,黄粉虫粪吸附剂最佳制备条件为:W=25 wt%,t1=10 min,T=400℃,t2=50 min。此条件下制备的吸附剂的比表面积为(589.6±2.1)m^2·g^(-1)。该吸附剂对亚甲基蓝的吸附动力学符合Ho-Mc Kay模型,吸附速度控制步骤为内扩散,吸附等温线符合Langmuir模型,最大吸附量可达117.65 mg·g-1,吸附过程为热力学自发行为。A large amount of frass is generated during the breeding process of Tenebrio molitor（ TM）. In this study,adsorbents（ TMA） were prepared from the frass of TM and was used for the removal of methylene blue（ MB） from aqueous solutions. The effects of several preparation variables,such as phosphoric acid concentration（ W）,soak time（ t1）,activation temperature（ T）,and activation time（ t2）,on the adsorption capability of TMA were investigated. The results showed that the optimized preparation conditions,as determined by the orthogonal experiment,were as follows： W = 25 wt%,t1= 10 min,T = 400℃,and t2= 50 min. Under these conditions,the specific surface area of TMA was（ 589. 6 ± 2. 1） m^2·g^（-1）. Adsorption kinetics followed the HoMc Kay equation. Intraparticle diffusion was the rate-controlling step in the adsorption process. Adsorption was a spontaneous process. The adsorption isotherm best fits the Langmuir model,and maximum adsorption capacity value could reach 117. 65 mg·g^（-1）.

关 键 词：黄粉虫 虫粪 吸附剂 吸附 亚甲基蓝 

分 类 号：X713[环境科学与工程—环境工程]