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ƪÃû£ºEFFECT OF INITIAL COD CONCENTRATION AND AERATION CONDITION ON REMEDIATION OF SLOW-FLOW POLLUTED SURFACE WATER BY IMMOBILIZED Flavobacterium sp.
ÆÚ¿¯£ºFresenius Environmental Bulletin
¾íÆÚºÅ£ºVolume 21, No 12a, 2012, 4016-4021
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EFFECT OF OF INITIAL COD CONCENTRATION AND AERATION CONDITION ON REMEDIATION OF SLOW-FLOW POLLUTED SURFACE WATER BY IMMOBILIZED Flavobacterium sp.
×÷Õß: Li, HB (Li, Hai-Bo)[ 1 ] ; Li, YH (Li, Ying-Hua)[ 1 ] ; Wang, H (Wang, Hong)[ 1 ] ; Sun, TH (Sun, Tie-Heng)[ 1,2 ]
À´Ô´³ö°æÎï: FRESENIUS ENVIRONMENTAL BULLETIN  ¾í: 21   ÆÚ: 12B   Ò³: 4016-4021   ³ö°æÄê: 2012
±»ÒýƵ´Î: 0 (À´×Ô Web of Science)
ÒýÓõIJο¼ÎÄÏ×: 21      [ ²é¿´ Related Records ]     ÒýÖ¤¹ØÏµÍ¼     
ÕªÒª: One strain was isolated from hydrocarbon-polluted Liao River Oil field, and was representative of Flavobacterium sp. (strain Oil-56). Chitosan (CS), sodium alginate (SA) and calcium chloride (CaCl2) embedding technology was adopted for Flavobacterium sp. immobilization. Secondly, the study investigated the influence of initial chemical oxygen demand (COD) of the surface water and aeration conditions on the remediation efficiency of the immobilized microbe. The results demonstrated that the immobilized beads gave high porosity and mechanical strength, easy regeneration and a long utilization time. The immobilized Flavobacterium sp. beads made in this study were suitable for remediation of COD-contaminated surface water with a wide range of initial COD values. At initial COD 77205 mg/L, the residual COD values for immobilized cells were 38-98 mg/L after 48 h, with removal efficiencies of 48.2-50.6%, being 42.7-45.8% higher than those of the free cells. Aeration accelerated bioremediation process. The optimal aeration intensity was 120 rpm, under which the COD removal efficiencies were 82 and 28% for immobilized beads and free cells, respectively. The Scanning Electronic Microscope (SEM) analysis indicated that the bead microstructure was suitable for Flavobacterium sp. growth.
Èë²ØºÅ: WOS:000320829600015
ÎÄÏ×ÀàÐÍ: Article
ÓïÖÖ: English
×÷Õ߹ؼü´Ê: surface water; immobilized cell; COD reduction; aeration condition; SEM analysis
KeyWords Plus: HEAVY-METALS; SOIL; FUNGI; BIOAVAILABILITY; BIOREMEDIATION; RADIONUCLIDES; MUSHROOMS; LEAD
ͨѶ×÷ÕßµØÖ·: Li, YH (ͨѶ×÷Õß)
              Shenyang Agr Univ, 21 Wanghua South St, Shenyang 110044, Peoples R China.
µØÖ·:
              [ 1 ] Shenyang Agr Univ, Minist Educ, Key Lab Reg Environm & Ecoremediat, Shenyang 110044, Peoples R China
        [ 2 ] Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
µç×ÓÓʼþµØÖ·: liyinghua1028@126.com
»ù½ð×ÊÖúÖÂл:
»ù½ð×ÊÖú»ú¹¹        ÊÚȨºÅ
National Key Technology RD Program        
2011BAJ06B02
National Natural Science Foundation of China        
50908151
51108275
Program for Liaoning Excellent Talents in University (LNET)        
LJQ2012101
Program for New Century Excellent Talents in University        
NCET-11-1012
Science & Technology Program of Liaoning Province        
2011229002
Program for Liaoning Excellent Talents in University        
LR201028
Shenyang University        
20210343
20210342
[ÏÔʾ»ù½ð×ÊÖúÐÅÏ¢]   
³ö°æÉÌ: PARLAR SCIENTIFIC PUBLICATIONS (P S P), ANGERSTR. 12, 85354 FREISING, GERMANY
Web of Science Àà±ð: Environmental Sciences
Ñо¿·½Ïò: Environmental Sciences & Ecology
IDS ºÅ: 170DH
ISSN: 1018-4619
4Â¥2013-08-07 19:58:51
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