生物炭零价铁去除水中硝酸盐氮影响因素探究  

Study on Influencing Factors of Nitrate Nitrogen Removal from Water by Zero-valent Iron of Biochar

作　　者：邱思远 高芳 王金霞[1] 李谢玲[1] 周诗建[1] 韦安磊[2] Qiu Siyuan;Gao Fang;Wang Jinxia;Li Xieling;Zhou Shijian;Wei Anlei(Chongqing Vocational Institute of Engineering,School of Resources and Security,Chongqing,402260;School of City and Environment,Northwest University,Shaanxi,710100)

机构地区：[1]重庆工程职业技术学院资源与安全学院,重庆402260 [2]西北大学城市与环境学院,陕西710100

出　　处：《当代化工研究》2023年第11期33-35,共3页Modern Chemical Research

基　　金：重庆工程职业技术学院院科研项目“生物炭增强零价铁渗透反应墙对地下水中硝酸盐氮的去除效果研究”(项目编号:2022KJB03)。

摘　　要：本文以小麦秸秆制备的生物炭和零价铁为原材料,考察了生物炭投加量、硝酸盐氮初始浓度、溶液初始pH对硝酸盐氮去除效果和产物选择性的影响,结果如下:生物炭投加量为1g时,硝酸盐氮去除率最高为83.6%,加入生物炭后可以抑制氨氮的生成。硝酸盐氮去除率随着硝酸盐氮初始浓度的升高而降低;酸性条件下更有利于硝酸盐氮的去除。The biochar and zero-valent iron prepared from wheat straw were used as raw materials in this paper.The effects of biochar dosage,initial concentration of nitrate nitrogen and initial pH of solution on nitrate nitrogen removal and product selectivity were investigated,the results are as follows:when the dosage of biochar is 1 g,the highest removal rate of nitrate nitrogen is 83.6%,and the formation of ammonia nitrogen can be inhibited by adding biochar.The removal rate of nitrate nitrogen decreases with the increase of initial concentration of nitrate nitrogen;acidic conditions are more conducive to removal nitrate nitrogen.

关 键 词：生物炭 零价铁 硝酸盐氮 产物选择性 去除率 

分 类 号：X5[环境科学与工程—环境工程]