Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor

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	Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor
	Cao XiaoLei 1,2,3,4; Sheng YuXing 1,2,3; Cao HongBin 1,2,3; Zhang Yi 3
刊名	SCIENCE CHINA-CHEMISTRY
	2014-11-01
卷号	57 期号:11 页码:1596-1601
关键词	anaerobic granulation Ca2+ augmentation EPS Mg2+ augmentation
ISSN号	1674-7291
其他题名	Sci. China-Chem.
中文摘要	The mechanisms responsible for the fast granulation of anaerobic sludge caused by Mg2+ and Ca2+ addition was examined in four lab-scale expanded granular sludge bed (EGSB) reactors. Results indicated that both Mg2+ and Ca2+ accelerated the sludge-granulation process and increased the amount of polysaccharides and proteins in the sludge. Energy dispersive x-ray spectrometry (EDX) analysis revealed that, in a mature granule, both Mg2+ and Ca2+ composed as phosphate and calcium was distributed primarily in the periphery of the granule, while magnesium distributed mainly in the interior. The addition of Mg2+ was more favorable for the nuclei formation, whereas the addition of Ca2+ was more favorable for subgranule growth and maintaining the granules' rigid structure. Results showed that the addition of Mg2+ in the nuclei formation stage and Ca2+ in the granule-growth stage accelerated granulation more than adding only one of them in the granulation process.
英文摘要	The mechanisms responsible for the fast granulation of anaerobic sludge caused by Mg2+ and Ca2+ addition was examined in four lab-scale expanded granular sludge bed (EGSB) reactors. Results indicated that both Mg2+ and Ca2+ accelerated the sludge-granulation process and increased the amount of polysaccharides and proteins in the sludge. Energy dispersive x-ray spectrometry (EDX) analysis revealed that, in a mature granule, both Mg2+ and Ca2+ composed as phosphate and calcium was distributed primarily in the periphery of the granule, while magnesium distributed mainly in the interior. The addition of Mg2+ was more favorable for the nuclei formation, whereas the addition of Ca2+ was more favorable for subgranule growth and maintaining the granules' rigid structure. Results showed that the addition of Mg2+ in the nuclei formation stage and Ca2+ in the granule-growth stage accelerated granulation more than adding only one of them in the granulation process.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	EXTRACELLULAR POLYMERIC SUBSTANCES ; SEQUENCING BATCH REACTOR ; WASTE-WATER TREATMENT ; BIOLOGICAL PHOSPHORUS REMOVAL ; ACTIVATED-SLUDGE ; AEROBIC GRANULES ; BLANKET REACTORS ; STABILITY ; AUGMENTATION ; BIOGRANULES
收录类别	SCI
原文出处	://WOS:000345095600024
语种	英语
WOS记录号	WOS:000345095600024
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11702]
专题	过程工程研究所_研究所（批量导入）
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cao XiaoLei,Sheng YuXing,Cao HongBin,et al. Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor[J]. SCIENCE CHINA-CHEMISTRY,2014,57(11):1596-1601.
APA	Cao XiaoLei,Sheng YuXing,Cao HongBin,&Zhang Yi.(2014).Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor.SCIENCE CHINA-CHEMISTRY,57(11),1596-1601.
MLA	Cao XiaoLei,et al."Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor".SCIENCE CHINA-CHEMISTRY 57.11(2014):1596-1601.