Electricity production and nutrient recovery from waste activated sludge via microbial fuel cell and subsequent struvite crystallization: Effect of low temperature thermo-alkaline pretreatment

Wei, Lin; Li, Ziyue; Hong, Tianqiu; Zhang, Qiang; Luo, Lei; Tang, Yiming; Ji, Junjie; Kong, Jianyu; Ding, Xiaoke

doi:10.1016/j.biortech.2024.131575

Bioresource Technology

2024

DOI: 10.1016/j.biortech.2024.131575

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Electricity production and nutrient recovery from waste activated sludge via microbial fuel cell and subsequent struvite crystallization: Effect of low temperature thermo-alkaline pretreatment

Lin Wei,

Ziyue Li,

Tianqiu Hong

et al.

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The Primary Factors Affecting the Efficiency of Two-Chamber Electrochemical Systems in Treating Phosphate-Containing Wastewater

Chen,

Han,

Wan

et al. 2024

Water

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The electrochemical crystallization method for recovering phosphorus resources from industrial wastewater has gained widespread attention due to its high efficiency and low cost. However, the strong corrosiveness of the industrial wastewater can affect the components of the electrochemical system, decreasing its performance. This study examines the stability of the two-chamber electrochemical (TCE) system and the service life of its components while recovering phosphate from the chemical polishing (CP) wastewater. An investigation of the phosphate removal rate and power output through the replacement of the system’s components was performed. The results indicated that the TCE system could effectively treat the CP wastewater, achieving a removal rate of up to 99% for phosphate and aluminum ions with a maximum power output of 1.09 mW. However, the strong corrosiveness of the CP wastewater decreased the performance of the TCE system, requiring component replacement every 20 days. The yield of ferrous ions was not the primary limiting factor for phosphate removal due to the effects of both electrochemistry and self-corrosion, but the excessive ferrous ions influenced the solution pH. The solution pH controlled the Fe(II)/P molar ratio in step 1, which subsequently influenced the purity of the vivianite in step 2. The closed circuit promoted an increase in the pH of wastewater. This method not only recovers phosphorus resources but also generates electrical energy, offering a new approach for resource recovery in industrial wastewater, aligning with the national sustainable development goals.

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The Primary Factors Affecting the Efficiency of Two-Chamber Electrochemical Systems in Treating Phosphate-Containing Wastewater

Chen,

Han,

Wan

et al. 2024

Water

View full text Add to dashboard Cite

show abstract

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Electricity production and nutrient recovery from waste activated sludge via microbial fuel cell and subsequent struvite crystallization: Effect of low temperature thermo-alkaline pretreatment

Cited by 1 publication

References 59 publications

The Primary Factors Affecting the Efficiency of Two-Chamber Electrochemical Systems in Treating Phosphate-Containing Wastewater

The Primary Factors Affecting the Efficiency of Two-Chamber Electrochemical Systems in Treating Phosphate-Containing Wastewater

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