%0 Journal Article
%T Exploration of Newly-Formed Ferric as the Coagulant<br>新生态铁的混凝作用探索
%A YANG Xue
%A ZHANG Jing-cheng
%A GUAN Xiao-hong
%A <br>杨雪
%A 张景成
%A 关小红
%J 环境科学
%D 2012
%I 
%X A new coagulant was synthesized by oxidizing FeII with H2O2 instantaneously. Key parameters in the preparation of the coagulant including aging time, acid volume, and n(H2O2)/n(Fe) were investigated through jar tests. The optimized coagulant was then compared with Fe2(SO4)3 and PFS (poly-ferric sulphate) in residual turbidity, UV254, Zeta potential to evaluate its coagulation efficiency and infer the reaction mechanism. Aging time has a little effect on coagulation efficiency. The optimized acid concentration was 0.1 mol·L-1. Coagulation efficiency increased with n(H2O2)/n(Fe). 0.55 is the most economical and efficient molar ratio. The removal efficiency of turbidity of the newly-formed ferric is similar to Fe2(SO4)3 or PFS. The removal efficiency of UV254 by newly-formed ferric is higher than that by Fe2(SO4)3 by 20%-44%. The Zeta potential of supernatant after being treated by newly-formed ferric gradually increased to 0 mV with the increasing coagulant dosage, indicating a strong effect of charge neutralization.The newly-formed ferric is a promising new coagulant with an extremely short aging time, a simple synthesis process, a lower cost than Fe2(SO4)3 or PFS by more than 50%, and a high removal efficiency of UV254 absorbance.
%K newly-formed ferric
%K H2O2
%K cost
%K aging
%K UV254<br>新生态铁
%K 双氧水
%K 成本
%K 老化
%K UV254
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=88A089165F5D51AC34FD4251D51BF672&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=E158A972A605785F&sid=EC37857E7CB2811A&eid=7DA67D178F3C9099&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=26