phosphate removal
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2022 ◽  
Vol 148 (2) ◽  
Michelle Finn ◽  
Regina Rodriguez ◽  
Domenic Contrino ◽  
Jennifer Swenson ◽  
David W. Mazyck ◽  

2022 ◽  
Vol 12 (1) ◽  
Yu Qin ◽  
Huili Li ◽  
Shuanglong Ma ◽  
Kai Li ◽  
Xiaohan Zhang ◽  

AbstractExcessive discharge of phosphorus into the water bodies is the key factor to cause eutrophication. The fruit and vegetable wastewater contains large amounts of phosphorus, and it may be directly discharged into water bodies, which has a great burden on the municipal sewage pipe network. Therefore, coagulation was used to remove phosphorus, recovered the phosphorus from the wastewater into the precipitate, and then the precipitate was pyrolyzed as an efficient adsorbent for phosphate removal. By comparing the adsorption effects of adsorbents (XT-300, XT-400, and XT-500) with pyrolysis temperatures of 300 °C, 400 °C, and 500 °C on phosphate in actual phosphorus-containing wastewater and simulated phosphorus-containing wastewater at different adsorbent dosage (4 g/L, 7 g/L, and 10 g/L), it was found that XT-300 had the best performance of adsorption, and the adsorption of phosphate was endothermic and obeyed the Langmuir isotherms and Elovich kinetics. The influence of pH, coexisting anions, and the structure of XT-300 revealed that the removal of phosphate was associated with electrostatic attraction, pore filling, but could not be determined whether it was related to surface precipitation. This study provides a way and method for the recovery and utilization of phosphorus in fruit and vegetable wastewater and proves that the synthetic adsorbent was an efficient phosphorus adsorbent. In the long term, we can try to use the adsorbent after phosphorus adsorption to promote plant growth in agricultural systems.

Processes ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 144
Weiran Chu ◽  
Yi Shi ◽  
Liang Zhang

As non-renewable resource, the recovery and utilization of phosphorus from wastewater is an enduring topic. Stimulated by the advances in research on polyphosphates (polyP) as well as the development of Enhanced Biological Phosphorus Removal (EBPR) technology to achieve the efficient accumulation of polyP via polyphosphate accumulating organisms (PAOs), a novel phosphorus removal strategy is considered with promising potential for application in real wastewater treatment processes. This review mainly focuses on the mechanism of phosphorus aggregation in the form of polyP during the phosphate removal process. Further discussion about the reuse of polyP with different chain lengths is provided herein so as to suggest possible application pathways for this biosynthetic product.

Sabolc Pap ◽  
Paul P.J. Gaffney ◽  
Barbara Bremner ◽  
Maja Turk Sekulic ◽  
Snezana Maletic ◽  

2022 ◽  
pp. 134439
Zhanghui Wang ◽  
Daowei Xia ◽  
Shijie Cui ◽  
Weipeng Yu ◽  
Bingtao Wang ◽  

Xuejie Yin ◽  
Xin Li ◽  
Evangelos Petropoulos ◽  
Yanfang Feng ◽  
Bei Yang ◽  

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