Cao Xiaolei1; Sheng Yuxing1; Cao Hongbin1; Zhang Yi2
Source Publicationsciencechinachemistry
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.
Document Type期刊论文
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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