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Comparison of Mg2+- and Ca2+-enhancing anaerobic granulation in an expanded granular sludge-bed reactor
Alternative TitleSci. China-Chem.
Cao XiaoLei1,2,3,4; Sheng YuXing1,2,3; Cao HongBin1,2,3; Zhang Yi3
2014-11-01
Source PublicationSCIENCE CHINA-CHEMISTRY
ISSN1674-7291
Volume57Issue:11Pages:1596-1601
AbstractThe 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.; 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.
KeywordAnaerobic Granulation Ca2++ Augmentation Eps Mg2++ Augmentation
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11426-014-5197-5
URL查看原文
Indexed BySCI
Language英语
WOS KeywordEXTRACELLULAR POLYMERIC SUBSTANCES ; SEQUENCING BATCH REACTOR ; WASTE-WATER TREATMENT ; BIOLOGICAL PHOSPHORUS REMOVAL ; ACTIVATED-SLUDGE ; AEROBIC GRANULES ; BLANKET REACTORS ; STABILITY ; AUGMENTATION ; BIOGRANULES
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000345095600024
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11702
Collection研究所(批量导入)
Affiliation1.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
Recommended Citation
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.
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