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Volume 13
Issue 9
10.3390/pr13092703
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

A Comparative Study on Various Pretreatment Methods of Anaerobic Digestion Piggery Effluent for Microalgae Cultivation

by
Tao He
1,
Qi Peng
2,3,
Jun Qian
4,5,
Liang Wei
5,
Pei Han
6,7 and
Qian Lou
1,*
1
Jiangxi Key Laboratory of Flood and Drought Disaster Defense, Nanchang 330029, China
2
Hubei Provincial Academy of Eco-Environment Sciences (Provincial Ecological Environment Engineering Assessment Center), Wuhan 430072, China
3
Hubei Key Laboratory of Pollution Damage Assessment and Environmental Health Risk Prevention and Control, Wuhan 430072, China
4
Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031, China
5
School of Resources & Environmental, Nanchang University, Nanchang 330031, China
6
Jiangxi Provincial Key Laboratory of Greenhouse Gas Accounting and Carbon Reduction, Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang 330031, China
7
Jiangxi Carbon Neutralization Research Center, Nanchang 330031, China
*
Author to whom correspondence should be addressed.
Processes 2025, 13(9), 2703; https://doi.org/10.3390/pr13092703 (registering DOI)
Submission received: 24 April 2025 / Revised: 4 August 2025 / Accepted: 21 August 2025 / Published: 25 August 2025
(This article belongs to the Special Issue Microalgae Technology in Wastewater Treatment: Applications and Prospects)
Versions Notes

Abstract

Anaerobic digestion piggery effluent (ADPE), dark brown with high turbidity and ammonium, inhibits algal growth and requires pretreatment for cultivation. This study compared various physical/biological pretreatment methods for microalgae cultivation. The results showed that the strategy of 10%ADPE fungal cultivation (10%AF) pretreatment and subsequent microalgae cultivation achieved maximum specific growth rate (0.094 d−1) with productivity (0.014 g L−1 d−1) and significant nutrient removal: 100% ammonium nitrogen, 99% total nitrogen, 63% total phosphorus, 91% chemical oxygen demand. However, the pathogenic fungus used poses safety risks, requiring future screening of eco-friendly alternatives. This study demonstrated that the strategy could be a promising approach to algal biomass production and nutrient removal from ADPE.
Keywords: anaerobic digestion piggery effluent; fungal pretreatment; microlage cultivation; biomass production; nutrient removal anaerobic digestion piggery effluent; fungal pretreatment; microlage cultivation; biomass production; nutrient removal

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MDPI and ACS Style

He, T.; Peng, Q.; Qian, J.; Wei, L.; Han, P.; Lou, Q. A Comparative Study on Various Pretreatment Methods of Anaerobic Digestion Piggery Effluent for Microalgae Cultivation. Processes 2025, 13, 2703. https://doi.org/10.3390/pr13092703

AMA Style

He T, Peng Q, Qian J, Wei L, Han P, Lou Q. A Comparative Study on Various Pretreatment Methods of Anaerobic Digestion Piggery Effluent for Microalgae Cultivation. Processes. 2025; 13(9):2703. https://doi.org/10.3390/pr13092703

Chicago/Turabian Style

He, Tao, Qi Peng, Jun Qian, Liang Wei, Pei Han, and Qian Lou. 2025. "A Comparative Study on Various Pretreatment Methods of Anaerobic Digestion Piggery Effluent for Microalgae Cultivation" Processes 13, no. 9: 2703. https://doi.org/10.3390/pr13092703

APA Style

He, T., Peng, Q., Qian, J., Wei, L., Han, P., & Lou, Q. (2025). A Comparative Study on Various Pretreatment Methods of Anaerobic Digestion Piggery Effluent for Microalgae Cultivation. Processes, 13(9), 2703. https://doi.org/10.3390/pr13092703

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