CAS OpenIR
comparisonofmg2andca2enhancinganaerobicgranulationinanexpandedgranularsludgebedreactor
Cao Xiaolei1; Sheng Yuxing1; Cao Hongbin1; Zhang Yi2
2014
Source Publicationsciencechinachemistry
ISSN1674-7291
Volume57Issue:11Pages:1596
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.
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/35751
Collection中国科学院过程工程研究所
Affiliation1.中国科学院过程工程研究所
2.National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Cao Xiaolei,Sheng Yuxing,Cao Hongbin,et al. comparisonofmg2andca2enhancinganaerobicgranulationinanexpandedgranularsludgebedreactor[J]. sciencechinachemistry,2014,57(11):1596.
APA Cao Xiaolei,Sheng Yuxing,Cao Hongbin,&Zhang Yi.(2014).comparisonofmg2andca2enhancinganaerobicgranulationinanexpandedgranularsludgebedreactor.sciencechinachemistry,57(11),1596.
MLA Cao Xiaolei,et al."comparisonofmg2andca2enhancinganaerobicgranulationinanexpandedgranularsludgebedreactor".sciencechinachemistry 57.11(2014):1596.
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