改性生物炭去除水体中N,P营养物的研究  

Removal of N,P Nutrientsfrom Water by Modified Biochar

作　　者：赵群英[1] 田敏 李杨 李侃[1] ZHAO Qunying;TIAN Min;LI Yang;LI Kan(School of Civil&Architecture Engineering,Xi’an Technological University,Xi’an 710021,China;Xi’an Water Treatment Co.Ltd.,Xi’an 710021,China;China IPPR International Engineering Co.Ltd.,Beijing 10089,China)

机构地区：[1]西安工业大学建筑工程学院,西安710021 [2]西安市净水处理有限责任公司,西安710021 [3]中国中元国际工程有限公司,北京10089

出　　处：《西安工业大学学报》2022年第4期387-392,共6页Journal of Xi’an Technological University

基　　金：陕西省教育厅专项科研计划项目(18JK0375)。

摘　　要：为了从水体中去除N,P营养物质,文中采用废弃的针叶树树枝制备生物炭,并采用药剂镧,锆,铈,及镧-锆,镧-铈,镧-锆-铈相结合的药剂对原始生物炭进行改性。研究结果表明:改性后的生物炭对水中N,P营养物质的吸附效果,磷酸盐>硝酸盐>氨氮;在pH为7时,镧炭具有优秀的同时吸附去除磷酸盐和硝酸盐的性能,对磷酸盐和硝酸盐的去除率分别为100%和6.57%,吸附量分别为43.00mg·g^(-1)和2.99mg·g^(-1);动力学分析显示对磷酸盐的吸附是发生在非均质表面的化学吸附。In order to remove N and P nutrients from water bodies,waste coniferous tree branches were used to prepare biochar,and the original biochar was modified with lanthanum,zirconium,cerium,and lanthanum-zirconium,lanthanum-cerium,lanthanum-zirconium-cerium combination agents.The results show that the modified biochar absorbs phosphate best,followed by nitrate and then ammonium.At pH 7,lanthanum carbon has excellent absorption performance-it can absorb and remove phosphate and nitrate simultaneously;the removal rates are 100%and 6.57%,and the absorption capacities 44.13mg·g^(-1) and 2.99mg·g^(-1),respectively.The kinetic analysis shows that the absorption of phosphate is a chemical adsorption that occurs on the heterogeneous surfaces.

关 键 词：改性生物炭 磷酸盐 硝酸盐 氨氮 

分 类 号：TU992[建筑科学—市政工程]