固定化海藻对金属离子吸附效果的研究

研究了固定化海带吸附含铜、镉溶液的过程,结果表明:非活性海带吸附水溶液中铜、镉离子的动力学过程可以用班厄姆吸附速率方程描述,铜和镉的吸附速率常数分别为0.1078和0.03028min-1;生物吸附过程符合Langmuir模型,根据Langmuir吸附等温模型的计算结果,得到固定化海带对铜和镉离子的最大吸附量分别为83.3和112.4mg/g,海带对铜离子的亲和性比对镉离子强.

The research on the adsorption effect on metal ions by immobilized marine alage

The process of adsorption of Cu~(2+),Cd~(2+) by immobilized marine alage was investigated. It may be noted from the results that, the process for bio-sorption of heavy metals(Cu,Cd) by immobilized Laminaria japonica can be described by the Bangham model. The adsorption rate constant calculated is 0.107 8 and 0.030 28 min~(-1) for Cu~(2+) and Cd~(2+) according to the model,respectively.The experimental biosorption equilibrium data for Cu~(2+) and Cd~(2+) are in good agreement with those calculated by the Langmuir model.The maximum uptake capacity calculated is 83.3 and 112.4 mg/g for Cu~(2+) and Cd~(2+) according to the Langmuir model,respectively.The appetency of Laminaria japonica to Cu~(2+) is better than Cd~(2+).