Semi-batch cultivation of Chlorella sorokiniana AK-1 with dual carriers for the effective treatment of full strength piggery wastewater treatment

Chen CY 1 , Kuo EW 2 , Nagarajan D 3 , Dong CD 4 , Lee DJ 5 , Varjani S 6 Show all authors , Lam SS 7 , Chang JS 8

Affiliations 

  • 1 University Center for Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan
  • 2 Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan
  • 3 Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
  • 4 Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
  • 5 Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
  • 6 Gujarat Pollution Control Board, Gandhinagar, Gujarat 382 010, India
  • 7 Pyrolysis Technology Research Group, Institute of Tropical Aquaculture and Fisheries (Akuatrop), Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
  • 8 Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan. Electronic address: changjs@mail.ncku.edu.tw
Bioresour Technol, 2021 Jan 28;326:124773.
PMID: 33548816 DOI: 10.1016/j.biortech.2021.124773

Abstract

In this study, process optimization for the microalgae-based piggery wastewater treatment was carried out by growing Chlorella sorokiniana AK-1 on untreated piggery wastewater with efficient COD/BOD/TN/TP removal and high biomass/protein productivities. Integration of the immobilization carriers (sponge, activated carbon) and semi-batch cultivation resulted in the effective treatment of raw untreated piggery wastewater. With 100% wastewater, 0.2% sponge and 2% activated carbon, the semi-batch cultivation (90% media replacement every 6 days) exhibited a COD, BOD, TN and TP removal efficiency of 95.7%, 99.0%, 94.1% and 96.9%, respectively. The maximal protein content, protein productivity, lutein content, and lutein productivity of the obtained microalgal biomass was 61.1%, 0.48 g/L/d, 4.56 mg/g, and 3.56 mg/L/d, respectively. The characteristics of the treated effluent satisfied Taiwan Piggery Wastewater Discharge Standards (COD 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

MeSH terms
Similar publications