摘要
通过液闪法分析得到胡敏素可富集镍,但是吸附受介质pH值、胡敏素用量和水相镍初始浓度等因素的影响。泥煤或胡敏素镍溶液紫外光谱的变化说明胡敏酸、富里酸和胡敏素3者之间或许存在可逆转化。胡敏素对镍的吸附反应可用Freundlich方程很好地进行描述,胡敏素吸附镍Freundlich吸附指数0.684 4推导出吸附反应以镍双配位形态为主。泥煤和胡敏素吸附镍Freundlich吸附指数(0.638 2,0.684 4)和吸附系数常用对数值(1.693 2,1.711 5)数值非常接近,表明胡敏素组分可能决定了泥煤的吸附能力,因此胡敏素将可作为有潜力的可渗透性屏障地质材料。
The experiment tested that humin can enrich Ni^2- by means of liquid scintillation counting. The procedures were effected by pH value, amount of humin and initial aqueous concentration of nickel. There may be exist reversible transitions among humic acid, fulvic acid and humin for variation of ultra-violet of peat or humin into nickel solution. Freundlich equation can describe the adsorption reaction of Ni^2- onto humin excellently. Nickel-humin -dual-complexation mode play an primary part in the adsorption owing to Freundlich adsorption exponent 0. 684 4. Freundlich adsorption exponent （0. 638 2, 0. 684 4）and common logarithm of adsorption index （1. 693 2,1. 711 5）for peat and humin are almost equal. They indicate that humin may control the binding ability of Ni^2- onto peat. The results show that humin can act as a potential material for permeable reactive barrier.
出处
《石油化工高等学校学报》
EI
CAS
2007年第2期5-8,共4页
Journal of Petrochemical Universities
基金
国家留学基金委资助(22307S05)
东华理工学院博士基金(DHB0504)
东华理工学院核资源与环境工程技术中心开放测试基金(051104)
关键词
泥煤
胡敏素
镍
吸附
PH
Peat
Humin
Nickel
Adsorption
pH
