摘要
通过化学共沉淀法制备了MnFe2O4-竹炭复合物(MnFe2O4-BC)和CuFe2O4-竹炭复合物(CuFe2O4-BC),并研究了该复合物对酸性红B的吸附性能。结果表明:MnFe2O4-BC和CuFe2O4-BC具有磁性;CuFe2O4-BC对酸性红B具有较强的吸附能力,CuFe2O4-BC的用量为每升溶液2 g的样品对初始质量浓度为150 mg/L的酸性红B溶液进行吸附,吸附速度较快,在前30 m in时,酸性红B的去除率就达81%,当吸附时间为20 h时,吸附基本达到饱和,其饱和吸附量为33 mg/g;在酸性红B溶液pH值为4.5左右时,最有利于CuFe2O4-BC对酸性红B的吸附;酸性红B在CuFe2O4-BC上的吸附行为较好地符合Langmu ir等温式和Freund lich等温式。
The magnetic bamboo charcoal materials magnetized by MnFe204 and CuFe204 were prepared by chemistry-copreeipitation method. The adsorption ability of the materials for acid red B was studied. Results showed that ： MnFe2O4-bamboo charcoal material （MnFe2O4-BC） and CuFe2O4 -bamboo charcoal material （CuFe2O4-BC） possessed magnetism. CuFe2O4-BC has stronger adsorbability for acid red B. When the dosage of CuFe2O4-BC was 2 g/L and the initial concentration of acid red B was 150 mg/L, the adsorption velocity was fast and the removal of acid red B was 82 % in the first 30 min. The adsorptive equilibrium reached at about 20 h. Saturation capacity was about 33 mg/g; the greatest adsorption of acid red B occurred at pH 4.5. the adsorption isotherm of acid red B accorded with the isothermal adsorption equations of Langmuir and Freundlich.
出处
《生物质化学工程》
CAS
2006年第5期11-14,共4页
Biomass Chemical Engineering
基金
福建省教育厅资助项目(JA03045)
福建省科技计划重点项目(2004I003)
关键词
磁性竹炭
铁酸盐
吸附
酸性红B
magnetic bamboo charcoal
ferrate
adsorption
acid red B
作者简介
彭扬飞（1982-），女．福建古田人，硕士生，主要从事天然高分子材料的研究；联系电话：1389550593，E-mail：pengyangfei82@tom．com。
通讯作者：陈清松，副教授，硕士生导师；联系电话：13358268993；E-mail：chenqsong@tom．com
