摘要
研究了不同粘土矿物和碳纳米管 (CNTs)吸附去除水体中微囊藻毒素 (Microcystins,MCs)的作用 .结果表明 ,在MC RR和LR的初始浓度分别为 2 1 0和 9 5mg·L-1时 ,尽管高岭土和海泡石等粘土矿物对MCs有一定的吸附能力 ,但吸附量分别低于 3 0和 1 6mg·g-1.与测试的不同粘土矿物相比 ,CNTs对MCs的吸附能力较强 ,吸附MC RR和LR量分别达到了 14 8和 6 7mg·g-1,是粘土矿物吸附量的 5倍左右 .进一步研究发现 ,CNTs对MCs的吸附能力随CNTs外径的增加而减少 ,说明CNTs的比表面积是决定吸附MCs量大小的重要因素之一 。
Adsorption and removal of microcystins (MCs) from water by different clays and carbon nanotubes (CNTs) were studied in this paper. It was shown that although the clay materials of kaolinite and sepiolite et al. have the abilities in the adsorption of MCs, the absorbed amounts of MC-RR and LR were only 3.0 and 1.6 mg/g at initial MC-RR of 21.0 mg/L and MC-LR of 9.5 mg/L, respectively. Compared with clays tested, CNTs were found to have the strong abilities in the adsorption of MCs and adsorption amounts of M...
出处
《环境科学》
EI
CAS
CSCD
北大核心
2004年第S1期92-94,共3页
Environmental Science
基金
广东省湛江市科技竞标项目 (编号 :2 0 0 3 3 )
国家自然科学基金项目 ( 3 0 2 70 2 77和 2 0 3 770 47)
国家 863项目( 2 0 0 2AA60 112 0 )
