%0 Journal Article
%T Adsorption of ammonia nitrogen in rare-earth wastewater by modified fly ash<br>改性粉煤灰吸附稀土废水中的氨氮
%A Chen Lirong
%A Li Yumei
%A Du Mingzhan
%A <br>陈莉荣
%A 李玉梅
%A 杜明展
%J 环境工程学报
%D 2013
%I 
%X Acid-modified and alkali-modified treatment of fly ash by sulfate and sodium hydroxide was performed to investigate adsorption characteristics and the optimal adsorption conditions of ammonia nitrogen in rare-earth wastewater by fly ash. The experimental results showed that the adsorption ability of fly ash was improved obviously after alkali-modified treatment, and the adsorption isotherms conformed to Freundlich and Langmuir isotherm under experimental conditions of alkali-modified fly ash dosage of 2 g, adsorption duration of 2 h, pH of 7.0~8.0. The result showed that the ammonia nitrogen adsorption by alkali-modified fly ash was benign and endothermic process, and the theoretical saturated adsorption amount was 1.9066 mg/g.
%K modified fly ash
%K rare-earth wastewater
%K ammonia nitrogen
%K adsorption characteristics<br>改性粉煤灰
%K 稀土废水
%K 氨氮
%K 吸附特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=4D6BB6A422263A45373E60C8B5006EF4&yid=FF7AA908D58E97FA&vid=DF92D298D3FF1E6E&iid=0B39A22176CE99FB&sid=AE43DE0664B02889&eid=91BAD12CFABB3251&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=17