Transformation and release of phosphorus from waste activated sludge upon combined acid/alkaline treatment

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Transformation and release of phosphorus from waste activated sludge upon combined acid/alkaline treatment
	Liu, Wen-Zong; Sun, Dan; Wang, Ai-Jie; Zhou, Ai-Juan; Guo, Ze-Chong; Wang, Ling; Tang, Cong-Cong; He, Zhang-Wei
刊名	RSC ADVANCES
	2017
卷号	7 期号:56 页码:35340-35345
英文摘要	This study was conducted to investigate migration and transformation of phosphorus (P) in waste activated sludge (WAS) during sequential processes of acid and alkaline treatments. The P mass balance analysis and the transformation of various P species from solid to liquid phase were also studied. Compared with single acid or alkaline experiments, the migration of total solid-P to liquid-P was promoted by the acid-alkaline sequential treatment. Acid-alkaline sequential treatment increased dissolution of non-apatite IP (NAIP) and decreased apatite P sediments in the final alkaline from the released species, resulting in enhancing the inorganic P (IP) transformation from solid to liquid phase. The maximal accumulation of molybdate reactive P (MRP) in liquid was 520 mg L-1, accounting for 54.7% of total P. However, the P release was reduced when alkaline-acid sequential treatment was used because of a low liquid P release from NAIP. It was found that solid-P transforming to liquid-MRP was mainly regulated by pseudo-chemical reactions regardless of a constant or changed pH. The release efficiencies of NAIP under both alkaline and acidalkaline conditions were more than 88.0%, whereas it was only 6.2% with alkaline-acid treatment. The findings in this study can help to understand the phosphate release and migration rules under different WAS treatment conditions for future P recovery.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39658]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
推荐引用方式 GB/T 7714	Liu, Wen-Zong,Sun, Dan,Wang, Ai-Jie,et al. Transformation and release of phosphorus from waste activated sludge upon combined acid/alkaline treatment[J]. RSC ADVANCES,2017,7(56):35340-35345.
APA	Liu, Wen-Zong.,Sun, Dan.,Wang, Ai-Jie.,Zhou, Ai-Juan.,Guo, Ze-Chong.,...&He, Zhang-Wei.(2017).Transformation and release of phosphorus from waste activated sludge upon combined acid/alkaline treatment.RSC ADVANCES,7(56),35340-35345.
MLA	Liu, Wen-Zong,et al."Transformation and release of phosphorus from waste activated sludge upon combined acid/alkaline treatment".RSC ADVANCES 7.56(2017):35340-35345.