%0 Journal Article
%T Self-aggregation Property of Bacterial Alginates Extracted from Aerobic Granules<br>好氧颗粒污泥藻酸盐提取物的聚集形态研究
%A LIN Yue-mei
%A WANG Lin
%A <br>林跃梅
%A 王琳
%J 环境科学
%D 2008
%I 
%X To explore bacterial alginates role in aerobic granules' formation, the alginate was extracted from aerobic granules and identified. Its aggregation property in 50mg·L-1CaCl2 solution was investigated by the atomic force microscopy (AFM). Bacterial alginates amounted to 35.1%±1.9% of granules' dry mass. With the concentration increased from 10 mg·L-1 to 500 mg·L-1 in 50mg·L-1 CaCl2, the extracted alginates tended to form ordered aggregations, with the shape changed from randomly distributed globules, to rod-like and flower-shaped aggregations, and finally to weblike networks due to their supramolecular self-assembly property. The three dimensional alginate-metal gel is the structural polymer of aerobic granules, and the alginates-Ca2+gel formation plays an important role in granules' formation and structure stabilization.
%K aerobic granules
%K bacterial alginates
%K supramolecular self-assembly
%K atomic force microscopy(AFM)<br>好氧颗粒污泥
%K 细菌藻酸盐
%K 超分子自组装
%K 原子力显微镜
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=1D2D8E8F5F09FFD9203C10B77C7E51E3&yid=67289AFF6305E306&vid=771469D9D58C34FF&iid=94C357A881DFC066&sid=7B747CE18E2C7596&eid=2E45C5B3364EA9F3&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=26