A novel fungal-algal coupling system for slaughterhouse wastewater treatment and lipid production

Zhengsheng Shi; Xin Tan; Yanbin Li; Yequan Sheng; Qin Zhang; Jialu Xu; Yong Yang

doi:10.1016/j.biortech.2023.129585

A novel fungal-algal coupling system for slaughterhouse wastewater treatment and lipid production

Bioresour Technol. 2023 Nov:387:129585. doi: 10.1016/j.biortech.2023.129585. Epub 2023 Jul 28.

Authors

Zhengsheng Shi¹, Xin Tan², Yanbin Li³, Yequan Sheng², Qin Zhang², Jialu Xu¹, Yong Yang¹

Affiliations

¹ College of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
² College of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China; Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
³ College of Biological and Food Engineering, Anhui Polytechnic University, Wuhu, Anhui 241000, China; Anhui Engineering Laboratory for Industrial Microbiology Molecular Breeding, Anhui Polytechnic University, Wuhu, Anhui 241000, China. Electronic address: lyb@ahpu.edu.cn.

PMID: 37517707
DOI: 10.1016/j.biortech.2023.129585

Abstract

In this study, a novel fungal-algal coupling system was established for slaughterhouse wastewater treatment with Chlorella sp. DT025 and a new fungus, Penicillium sp. AHP141. With the optimization of cultivation conditions for the fungal-algal coupling system, the harvest efficiency of Chlorella sp. DT025 reached 99.79%. The mechanism of microalgae harvest of the fungal-algal system was revealed to be related to the morphological characteristics, surface charge, and the secretion of humic acid-like compounds and tryptophan on the surface of the fungi cells. For the original slaughterhouse wastewater treatment, the fungal-algal coupling system had a better removal efficiency of COD, TN, and TP than both monoculture systems. In the high-concentration artificial slaughterhouse wastewater, COD removal of the fungal-algal system reached more than 5350 mg/L. The lipid production of the fungal-algal coupling system in the high-concentration artificial slaughterhouse wastewater treatment was improved by 343.33% to 1.33 g/L compared to the microalgae monoculture treatment.

Keywords: Chlorella; Fungal-algal coupling system; Lipid production; Penicillium; Slaughterhouse wastewater treatment.

MeSH terms

Abattoirs
Biomass
Chlorella*
Lipids
Microalgae*
Nitrogen / analysis
Water Purification*

Substances

Lipids
Nitrogen