摘要
用H_(2)O_(2)、KMnO_(4)(Mn)和Mn(CH3COO)2·4H_(2)O(MnC)改性松木生物炭(PW),通过吸附实验和表征探究其对Pb的去除能力和去除机理,并定量分析各种吸附机制的贡献率。PW-H_(2)O_(2)、PW-Mn、PW-MnC对溶液中Pb的吸附量分别是原始生物炭的6、8.5、7.9倍。两种锰改性生物炭比表面积显著提高,其表面形成了MnO_(2)。阳离子交换对吸附的贡献率占PW-Mn、PW-MnC吸附Pb的74.6%、87.5%。表明BC-MnC是一种去除工业废水中重金属Pb的综合性能优异的材料。
Biochar was prepared from pine wood(PW)and modified by H_(2)O_(2),KMnO_(4) and Mn(CH3COO)2·4H_(2)O.The removal capacity and mechanism of Pb was explored through adsorption experiments and characterization,and various adsorption mechanisms were quantitatively analyzed to reveal the contribution rate of each mechanism.The adsorption capacity of Pb in the water of PW-H_(2)O_(2),PW-Mn,PW-MnC was 6,8.5 and 7.9 times that of the original biochar.The specific surface area of two kinds of manganese-modified biochar increased obviously and on the surface of which MnO2 were formed.And the contribution rate of cation exchange to adsorption accounted for 74.6%and 87.5%of Pb adsorption.The results showed that PW-MnC was a kind of material with excellent comprehensive performance in removing heavy metal Pb from industrial wastewater.
作者
周振扬
杨驰浩
尹微琴
侯建华
王圣森
王小治
Zhou Zhenyang;Yang Chihao;Yin Huiqin;Hou Jianhua;Wang Shensen;Wang Xiaozhi(College of Environmental Science and Engineering,Yangzhou University,Yangzhou 225127,China;Jiangsu Organic Solid Waste Recycling Collaborative Innovation Center,Nanjing 210095,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2021年第7期88-93,共6页
Industrial Water Treatment
基金
国家自然科学基金(41977085,31772394)江苏省现代农业项目(BE2018328)
江苏省六大人才高峰创新团队项目(2018-TD-JNHB-012)
扬州大学优秀教学团队项目。
关键词
松木生物炭
化学氧化
工业废水
pine biochar
chemical oxidation
industrial wastewater
