Integrated valorization system for simultaneous high strength organic wastewater treatment and astaxanthin production from Haematococcus pluvialis

Minmin Pan, Xinyu Zhu*, Gang Pan, Irini Angelidak

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

High-strength organic wastewater, e.g., potato juice wastewater, exerts high stress on the environment. This study proposes an integrated system for simultaneous high-strength organic wastewater treatment and nutrients upcycling for astaxanthin production by the combination of anaerobic processes and microalgae (Haematococcus pluvialis) cultivation. The potato juice wastewater was pretreated by either acidification or methanation. The effluents of both pretreatments achieved higher biomass yields of H. pluvialis compared to cultivation in standard culture media (control). The high acetate and potassium concentrations of the acidification effluents resulted in significantly higher astaxanthin production (24.5–27.9 mg g−1, 3 days) compared to the control (14.7 mg g−1, 12 days) in a shorter period. The integrated system contributed to a final removal efficiency of 51.3–75.8%, 86.5–98.3%, and 69.4–83.4% for COD, phosphorus, and ammonia, respectively. This study presents a promising two-stage process for simultaneous efficient methane and astaxanthin production, as well as remediation of high-strength organic wastewater.

Original languageEnglish
Article number124761
JournalBioresource Technology
Volume326
Number of pages8
ISSN0960-8524
DOIs
Publication statusPublished - 2021

Keywords

  • Anaerobic processes
  • Astaxanthin induction
  • Biogas
  • High-strength organic wastewater
  • Microalgae

Fingerprint Dive into the research topics of 'Integrated valorization system for simultaneous high strength organic wastewater treatment and astaxanthin production from <i>Haematococcus pluvialis</i>'. Together they form a unique fingerprint.

Cite this