【摘要】 目的研究了黄原酸壳聚糖对Ni2+的吸附。方法精确称取0.1g黄原酸壳聚糖(或壳聚糖)加入到50ml的Ni2+溶液(250mg/L)中,测定在不同Ni2+溶液的初始pH值(pH=1～8)、吸附温度(20～45℃)和吸附时间(0～3h)时黄原酸壳聚糖(或壳聚糖)对Ni2+吸附量的影响。结果在最佳吸附条件(Ni2+溶液初始pH=7,吸附温度为30℃,吸附时间为30min)时,黄原酸壳聚糖对Ni2+最大吸附量达到110.9mg/g;而壳聚糖吸附2h的吸附量仅为28.0mg/g。结论黄原酸壳聚糖是一种高效的去除Ni2+的吸附剂。更多还原

【Abstract】 Objective To study the adsorption of Ni2+ to xanthated chitosan.Methods The precise amount 0.1 g xanthated chitosan or chitosan was added into 50 ml Ni2+ solutions(250 mg/L),the adsorption capacity of xanthated chitosan or chitosan for Ni2+ was determined at different initial pH values of Ni2+ solutions(1-8),adsorption temperatures(20-45 ℃)and adsorption time(0-3 h).Results The maximal adsorption capacity could reach 110.9 mg/g under the optimal conditions(pH value:7,temperature:30 ℃,adsorption time:30 min),and could only reach 28.0 mg/g as the adsorption time was 2 h.Conclusion Xanthated chitosan is an efficient adsorbent for removal of Ni2+ from water.更多还原