Optimizing real swine wastewater treatment with maximum carbohydrate production by a newly isolated indigenous microalga Parachlorella kessleri QWY28

Wenying Qu; Chaofan Zhang; Yanpeng Zhang; Shih-Hsin Ho

doi:10.1016/j.biortech.2019.121702

Optimizing real swine wastewater treatment with maximum carbohydrate production by a newly isolated indigenous microalga Parachlorella kessleri QWY28

Bioresour Technol. 2019 Oct:289:121702. doi: 10.1016/j.biortech.2019.121702. Epub 2019 Jun 26.

Authors

Wenying Qu¹, Chaofan Zhang¹, Yanpeng Zhang¹, Shih-Hsin Ho²

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
² State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China. Electronic address: stephen6949@hit.edu.cn.

PMID: 31260935
DOI: 10.1016/j.biortech.2019.121702

Abstract

In this study, a newly discovered microalga Parachlorella kessleri QWY28 with a superior ability to treat real swine wastewater, was isolated and explored. The optimal culture conditions of 30 °C and 600 μmol/m²·s were set to improve the practical application potential, achieving maximum pollutant removal efficiencies of 88% COD, 95% TN and almost 100% TP, with carbohydrate production at 646 mg/L·d. These results present the highest efficiencies reported to date, for non-sterilized real swine wastewater without pretreatment. These findings support the practical feasibility of combined microalgal swine wastewater purification and energy production systems.

Keywords: Carbohydrate; Energy production; Microalgae; Parachlorella kessleri QWY28; Real swine wastewater treatment.

MeSH terms

Animals
Carbohydrates / biosynthesis*
Chlorophyta / metabolism*
Microalgae / metabolism*
Swine
Waste Disposal, Fluid / methods*
Wastewater / chemistry*

Substances

Carbohydrates
Waste Water