%0 Journal Article
%T Effect of Ce3+ on Volatile Fatty Acid Concentrations During Anaerobic Granular Sludge Digestion<br>Ce3+对厌氧颗粒污泥产VFA的影响
%A LIANG Rui
%A XIA Qing
%A DING Li-li
%A SHI Xiao-lei
%A ZHAO Ming-yu
%A REN Hong-qiang
%A <br>梁睿
%A 夏青
%A 丁丽丽
%A 时孝磊
%A 赵明宇
%A 任洪强
%J 环境科学
%D 2009
%I 
%X Batch experiments were conducted to investigate the effect of Ce3+ on volatile fatty acid(VFA) concentrations by anaerobic granular sludge digestion using D-Glucose and acetic sodium as substrate in the state of stabilization and restart-up. Results show that when the concentration of Ce3+ is lower than 1 mg/L, VFA concentration decreases, which suggests the transformation of butyric acid to acetic acid and acetic acid to methane is promoted. When the concentration of Ce3+ is 1-10 mg/L, the bacterial activity decreases and decomposition of the acetic acid and butyric acid becomes more difficult compared with the control. Adding Ce3+ brings little change in the constitution of VFA: 96% of VFA is acetic acid and butyric acid, while the propionic acid accounts for less than 3%. With the acetic sodium as the sole carbon and energy source, adding 0.05 mg/L Ce3+ could accelerate acetate degradation. After being conserved for 4 months, the activity of the Ce-containing anaerobic granular sludge is higher than that of the Ce-free sludge. The present of Ce contributes to the restart-up of anaerobic reactors.
%K volatile fatty acid (VFA)
%K rare earth element
%K Ce3+
%K anaerobic granular sludge<br>挥发性脂肪酸(VFA)
%K 稀土元素
%K Ce3+
%K 厌氧颗粒污泥
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=37A900149FF03DEBDDA2A33704FC0F0A&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=E158A972A605785F&sid=CA10C709B736BBEA&eid=2625CEFACC964DE3&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=0