核桃壳生物炭的制备及对废水中Ni2+的吸附  

Preparation of Biochar and Its Adsorption of Ni2+ in Wastewater

作　　者：叶京达 白文钊 梁淑君 傅浩 林汝娟 陈忻 许锋 YE Jing-da;BAI Wen-zhao;LIANG Shu-jun;FU Hao;LIN Ru-juan;CHEN Xin;XU Feng(School of Environment and Chemical Engineering Foshan University,Guangdong Foshan 528000,China)

机构地区：[1]佛山科学技术学院环境与化学工程学院

出　　处：《广州化工》2019年第23期83-86,共4页GuangZhou Chemical Industry

摘　　要：生物炭因其比表面积大和孔隙结构丰富等的特点,可作为一种天然吸附材料,目前被广泛应用于农业、环境和能源等多方面领域。本实验利用丢弃的核桃壳在不同温度条件下制备成生物炭,并探究将其用以吸附废水中重金属镍离子的吸附效果。实验结果表明:核桃壳基生物炭在700℃热解温度下的比表面积最大;静态吸附实验中,生物炭对镍离子有良好的吸附性能,并且对镍离子的吸附过程符合Langmuir吸附等温模型。Biochar is widely used in agriculture,environment and energy because of its large specific surface area and rich pore structure.The discarded walnut shells were prepared into biochar under different temperature conditions,and the adsorption effect of the heavy metal nickel ions in the wastewater was investigated.The experimental results showED that the specific surface area of the walnut shell-based biochar at 700℃ pyrolysis temperature WAs the largest.In the static adsorption experiment,the biochar had good adsorption performance to nickel ions,and the adsorption process of nickel ions conformed to the Langmuir adsorption isotherm model.

关 键 词：生物炭 吸附 NI^2+ 吸附动力学 

分 类 号：TQ[化学工程]