高校化学工程学报2017，Vol.31Issue(6)：1475-1481,7.DOI:10.3969/j.issn.1003-9015.2017.06.029
煅烧白云石-铝盐即时合成Mg/Al-LDH去除水中的胭脂红
In Situ Synthesis of Mg/Al-LDH with Aluminum Salt and Calcined Dolomite for Carmine Wastewater Treatments
摘要
Abstract
Layered double hydroxides (LDH) have strong anion exchange capacities and show potential application in the treatment of anionic dye containing wastewater. In this study, calcined dolomite and AlCl3·6H2O were used as raw materials for in situ synthesis of LDH to remove carmine from simulated wastewater. Effects of initial carmine concentration, temperature, calcined dolomite content and Mg/Al ratio were investigated. XRD, FT-IR and FE-SEM were used to investigate carmine removal mechanism by the synthesized LDH. The experimental results show that pH = 9, initial concentration = 500 mg.L-1, Mg:Al =3:1(mol), temperature = 30℃ and reagents = 1.7 g.L-1 is the optimum condition for carmine removal, and the removal efficiency is 89.34%. Carmine in the solution absorbs by LDH layers via ion exchange, which results in carmine removal.关键词
层状双氢氧化物/煅烧白云石/铝盐/胭脂红Key words
layered double hydroxides/calcined dolomite/aluminum salt/carmine分类
资源环境引用本文复制引用
陈冬,徐礼坤,谢晶晶,刘海波,孔殿超,陈天虎..煅烧白云石-铝盐即时合成Mg/Al-LDH去除水中的胭脂红[J].高校化学工程学报,2017,31(6):1475-1481,7.基金项目
国家自然科学基金(41572028) （41572028）
博士后基金(2016T90560). （2016T90560）
