海带生物炭的制备及其对Cd^(2+) 的吸附性能  

Preparation and performance of kelp biochar for Cd^(2+) treatment

作　　者：孟庆梅[1,2] 王文雅 张岚欣 赵琦 刘懿亿 刘新鹏 MENG Qingmei;WANG Wenya;ZHANG Lanxin;ZHAO Qi;LIU Yiyi;LIU Xinpeng(School of Resources and Environmental Engineering,Shandong University of Technology,Zibo 255049,China;College of Chemical Engineering,China University of Petroleum(East China),Qingdao 266555,China)

机构地区：[1]山东理工大学资源与环境工程学院,山东淄博255049 [2]中国石油大学(华东)化学工程学院,山东青岛266555

出　　处：《山东理工大学学报（自然科学版）》2023年第5期1-7,共7页Journal of Shandong University of Technology:Natural Science Edition

基　　金：国家自然科学基金青年科学基金项目(21908134);山东省自然科学基金项目(ZR2019BB045);山东省重大科技创新工程项目(2018CXGC1011)。

摘　　要：以海带边角料为原料,制备海带生物炭(kelp biochar,KBC),探究其对重金属Cd^(2+)的吸附作用。在500、600、700℃三种热解温度下得到不同的粉末炭(KBC500、KBC600、KBC700),探究三者对Cd^(2+)的吸附效果,确定粉末炭的最佳制备温度为700℃。通过单因素实验研究了KBC700加入量、溶液pH、Cd^(2+)初始浓度和吸附时间对去除水中Cd^(2+)的影响,确定了KBC700对Cd^(2+)的最佳去除条件。利用扫描电子显微镜(SEM)、X射线能谱仪(EDS)、傅里叶变换显微红外光谱仪(FTIR)等技术对样品进行表征。结果表明,与KBC500和KBC600相比,KBC700孔结构更加丰富,含氧官能团增加,为吸附提供更多的吸附位点,KBC700对Cd^(2+)的最高吸附量可达271.93 mg/g;因此,KBC700可以作为一种高效吸附剂去除水中的Cd^(2+)。Kelp biochar(KBC)were prepared from kelp scraps to investigate the adsorption of Cd^(2+).Different powdered carbon(KBC500,KBC600,KBC700)were obtained at three pyrolysis temperatures of 500,600,700℃,and the adsorption capacities of them were investigated.The optimal preparation temperature for powdered carbon was 700℃.The effects of the dosage,the pH of solution,the initial concentration of Cd^(2+)and adsorption time on the removal of Cd^(2+)were investigated by single factor experiments.The optimal Cd^(2+)removal conditions of KBC700 were determined.The samples were characterized by scanning electron microscope(SEM),X-ray energy dispersive spectrometer(EDS)and Fourier transform microscopic infrared spectrometer(FTIR).The results show that compared with KBC500 and KBC600,the KBC700 can provide more adsorption sites due to its richer pore structure and oxygen-containing functional groups.The maximum adsorption capacity can reach 271.93 mg/g.Therefore,the kelp biochar could be a promising adsorbent for the removal of Cd^(2+)from aqueous solution.

关 键 词：粉末炭 镉 吸附 热解温度 生物质 

分 类 号：X703[环境科学与工程—环境工程]