Phosphorus recovery from pig manure fermentation supernatant by pH enhanced anaerobic fermentation and vivianite crystallization-Reference-Cited by-同舟云学术

Phosphorus recovery from pig manure fermentation supernatant by pH enhanced anaerobic fermentation and vivianite crystallization

Published:2023-05-11 Issue: Volume: Page:
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Author:

Chen tengshu¹,song xingfu²,Xing mengyao³

Affiliation:

1. Quanzhou Normal University

2. Fuzhou University

3. GuangXi art university

Abstract

Abstract Taking pig manure as the research object, anaerobic fermentation was carried out through different pH adjustments to collect phosphorus -rich supernatant. Under acidic conditions, the effect of promoting phosphorus(P) release was better. The highest Total P (TP) content in the supernatant was 1.46 times that of the control group(NC), and the highest PO43−-P content was 1.71 times that of the control group. Under alkaline conditions, the effect of alkali promoting P release is poor, the maximum TDP content is only 0.89 times of that of the control group, and the maximum PO43− P content is only 0.94 times of that of the NC. The fermentation supernatant was treated in a two-chamber electrolytic tank, and more than 90% of P was recovered, and 84.66% purity of vivianite was obtained.

Publisher

Research Square Platform LLC

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