芦苇基生物炭的制备与活化方式比较研究  

Comparative Study on Preparation and Activation Methods of Reed Based Biochar

作　　者：李子音 赵传起[4] 刘欢 张华[1,2] 张帆 邵冰[5] 杨悦锁 Li Ziyin;Zhao Chuanqi;Liu Huan;Zhang Hua;Zhang Fan;Shao Bing;Yang Yuesuo(Shenyang Academy of Environmental Sciences,Shenyang 110167,China;Liaoning Provincial Key Laboratory for Urban Ecology,Shenyang 110167,China;Shenyang Saisi Environmental Engineering Design&Research Center Co.,Ltd.Shenyang 110167,China;School of Environmental Science and Technology,Shenyang University,Shenyang 110044,China;Shenyang Lyuheng Environment Consulting Co.,Ltd.,Shenyang 110167,China)

机构地区：[1]沈阳环境科学研究院,辽宁沈阳110167 [2]辽宁省城市生态重点实验室,辽宁沈阳110167 [3]沈阳赛思环境工程设计研究中心有限公司,辽宁沈阳110167 [4]沈阳大学环境学院,辽宁沈阳110044 [5]沈阳绿恒环境咨询有限公司,辽宁沈阳110167

出　　处：《沈阳大学学报（自然科学版）》2018年第6期446-451,共6页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金资助项目(41703120);辽宁省博士启动基金资助项目(201601214);沈阳市科技计划资助项目(F16-162-9-00)

摘　　要：以典型人工湿地植物芦苇,作为研究对象,通过直接碳化、KOH活化和CO_2活化等方式制备高吸附性能的芦苇基生物炭材料,并通过扫描电镜(SEM)、BET比表面积、傅里叶红外光谱(FTIR)等表征方法分析了生物炭材料的表面、孔隙等物理化学特征.活化后的生物炭内部结构疏松、多孔,KOH活化碳材料的BET比表面积最高达965.31m^2·g^(-1)(650-K),而CO_2活化碳材料最高达到1 038.19m^2·g^(-1)(900-C),与碳化材料相比,分别提高了231.05倍和248.56倍,活化效果非常显著.利用制备的芦苇基生物炭吸附亚甲基蓝污染物(MB),650-K和900-C的吸附容量分别高达595.79和443.83mg·g^(-1),相比于碳化的生物炭,分别提高了139.47和91.08倍,650-K对于MB的去除率高达99.29%,吸附效果显著提高.与传统的湿地植物废弃物处置方式相比,本研究中制备生物炭材料技术具有一定的经济效益、环境效益和良好的应用前景.Taking constructed wetland(CW)plant waste as the research object,reed-based bio-charcoal materials with high adsorption properties were prepared by pyrolysis,KOH activation and CO2activation methods.Physical and chemical characterizations of the prepared bio-charcoal materials were conducted by scanning electron microscope(SEM),specific surface area(BET)and Fourier transform infrared spectroscopy(FTIR).The internal structure of bio-charcoal was loose and porous,and the BET surface area of KOH activated bio-charcoal reached965.31m^2·g^-1(650-K),while the CO2activated bio-charcoal reached1038.19m^2·g^-1(900-C).Compared with carbonized materials,they increased by231.05times and248.56times,respectively.The activation performance was very significant.Meanwhile,the prepared Bio-charcoal materials were used to adsorb a methylene blue(MB)pollutant.The adsorption capacity of650-K and900-C reached595.79and443.83mg·g^-1.Compared with carbonized biochar,it increased by139.47and91.08times,respectively.The removal rate of650-K for MB was up to99.29%,and the adsorption performance was significantly improved.Compared with conventional CW waste disposal methods,the proposed method provides economic and environmental benefits and has promising prospects for real-world application.

关 键 词：湿地植物资源化 生物炭材料 活化方式 亚甲基蓝 吸附 

分 类 号：X703.1[环境科学与工程—环境工程]