固定化鼠尾藻Sargassum thunbergii对水中重金属锌的生物吸附效应
发布时间：2019-04-19 14:50
【摘要】：采用海藻酸钠-聚乙烯醇联合固定鼠尾藻与活性炭的方法对废水中重金属Zn~(2+)进行生物吸附研究。结果表明:当固定化材料配比为15 g·L~(-1)鼠尾藻粉,2%海藻酸钠溶液、6%聚乙烯醇溶液,1.5%活性炭时,固定化小球对废水中Zn~(2+)的吸附率最大。溶液在不同环境因素条件下吸附率不同,吸附率随着pH升高而升高,当pH为6时吸附率达到最大,随后开始下降;当温度为30℃,投放量为60 g·L~(-1)时吸附率上升至最大值后趋于平衡,吸附率不再随着条件的增加而增加;前30min吸附过程为快速吸附阶段,并在60 min后吸附率趋于平衡。在实验室规模的流化生物反应器中,固定化颗粒可以连续高效处理模拟矿山废水,同时经过多次吸附解吸循环后仍然具有较好的吸附效果,为固定化鼠尾藻的实际应用奠定了基础。
[Abstract]:The biosorption of heavy metal Zn~ (2) in wastewater by sodium alginate-polyvinyl alcohol fixation with activated carbon was studied. The results showed that the adsorption rate of Zn~ (2) in wastewater was the highest when the ratio of immobilization material was 15 g 路L ~ (- 1), 2% sodium alginate solution, 6% polyvinyl alcohol solution and 1.5% activated carbon. The adsorption rate of the solution is different under different environmental factors. The adsorption rate increases with the increase of pH. When the pH is 6, the adsorption rate reaches the maximum, and then begins to decrease. When the temperature is 30 鈩，
本文编号：2461044
[Abstract]:The biosorption of heavy metal Zn~ (2) in wastewater by sodium alginate-polyvinyl alcohol fixation with activated carbon was studied. The results showed that the adsorption rate of Zn~ (2) in wastewater was the highest when the ratio of immobilization material was 15 g 路L ~ (- 1), 2% sodium alginate solution, 6% polyvinyl alcohol solution and 1.5% activated carbon. The adsorption rate of the solution is different under different environmental factors. The adsorption rate increases with the increase of pH. When the pH is 6, the adsorption rate reaches the maximum, and then begins to decrease. When the temperature is 30 鈩，
本文编号：2461044
本文链接：https://www.wllwen.com/kejilunwen/kuangye/2461044.html
