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Modern Agricultural Science and Technology
2015
(10)
208-209+215
海藻酸钠凝胶球对铬(Ⅵ)的去除效果研究
作 者：
孙伟光;邢佳;邹海虹;陈丽春
单 位：
黑龙江省环境保护科学研究院
关键词：
海藻酸钠-铁(Ⅲ)凝胶球;海藻酸钠-钙凝胶球;铬(Ⅵ);吸附等温线
摘 要：
研究海藻酸钠-钙凝胶球、海藻酸钠-铁(Ⅲ)凝胶球对废水中的铬(Ⅵ)的去除效果。结果表明:对50 m L(10 mg/L)的模拟废水进行吸附,海藻酸钠-铁(Ⅲ)凝胶球的吸附效果较好,而海藻酸钠-钙凝胶球对铬(Ⅵ)几乎不发生吸附作用。铬(Ⅵ)的去除率随吸附时间的增加而提高,吸附240 min后,海藻酸钠-铁(Ⅲ)凝胶球对铬(Ⅵ)的去除率可达99%以上,海藻酸钠-铁(Ⅲ)凝胶球在酸性条件下比较稳定,在强碱性条件下易被分解,海藻酸钠-铁(Ⅲ)凝胶球吸附铬(Ⅵ)的吸附等温线符合Langmuir型,最大吸附量为11.827 mg/g。利用海藻酸钠-铁(Ⅲ)凝胶球去除废水中的铬(Ⅵ)具有工艺简单、处理效率高、速度快等优点。
译 名：
Study on Sodium Alginate Gel Bead Removing Cr(Ⅵ)
作 者：
SUN Wei-guang;XING Jia;ZOU Hai-hong;CHEN Li-chun;Heilongjiang Environmental Protection Academy of Science;
关键词：
sodium alginate-iron(Ⅲ) gel bead;;sodium alginate-calcium gel bead;;chromium(Ⅵ);;adsorption isotherm
摘 要：
The adsorption experiment of chromium(Ⅵ)in waste water was carried by sodium alginate-calcium gel beads and sodium alginateiron(Ⅲ)gel beads. The results showed that the adsorption effect of sodium alginate-iron(Ⅲ)was better than that of sodium alginate-calcium when 50 m L(10 mg/L)simulated waste water was dealt with. The removal efficiency of chromium(Ⅵ)in waste water increased with the increase of adsorption time. The chromium(Ⅵ)removal efficiency of sodium alginate-iron(Ⅲ)was more than 99% after 240 minutes,while sodium alginate-calcium could hardly adsorb chromium(Ⅵ). Sodium alginate-iron(Ⅲ)gel bead was stable under acid condition and was apt to decompose under alkali condition. The chromium(Ⅵ)adsorption isotherm of sodium alginate-iron(Ⅲ)gel bead accorded with Langmuir model and the maximal adsorption amount was 11.827mg/g. The removal of chromium(Ⅵ)in waste water by sodium alginate-iron(Ⅲ)gel bead was of simple technique,its have high efficiency and fast speed.
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