Journal
BIORESOURCE TECHNOLOGY
Volume 305, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123078
Keywords
Phosphorus (P) recovery; Vivianite; Volatile fatty acids (VFAs); Waste activated sludge (WAS); Food waste (FW); Biological acidification
Funding
- National Natural Science Foundation of China [51878243, 51708171]
- China Postdoctoral Science Foundation [2018M630508, 2019T120390]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), China
Ask authors/readers for more resources
This research proposed an innovative approach to synchronously enhance the recovery of phosphorus (P) as vivianite and volatile fatty acids (VFAs) during waste activated sludge (WAS) and food waste (FW) co-fermentation. A high performance was achieved under 30% FW addition and pH uncontrolled, which gained 83.09% of TP recovery as high-purity vivianite (93.90%), together with efficient VFAs production (7671 mg COD/L). The FW supplement could enhance VFAs production and subsequently lower pH to contribute to the release of Fe2+ and PO43-. Also, it could dampen disrupting effects of strong acidic pH on microbial cells (lowering LDH release). Moreover, the flexible pH variation caused by biological acidification could maintain relatively higher microbial activities (increasing enzymes' activities), which was advantageous to the biological effects involved in Fe2+ and PO43 release and VFAs generation. Therefore, this research provide a promising and economic alternative to dispose of WAS and FW simultaneously for valuable resource recovery.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available