Outdoor phycoremediation and biomass harvesting optimization of microalgae Botryococcus sp. cultivated in food processing wastewater using an enclosed photobioreactor

Gani P 1 , Apandi NM 2 , Mohamed Sunar N 3 , Matias-Peralta HM 4 , Kean Hua A 5 , Mohd Dzulkifli SN 6 Show all authors , Parjo UK 3

Affiliations 

  • 1 School of Applied Sciences, Faculty of Integrated Life Sciences, Quest International University, Ipoh, Malaysia
  • 2 Sustainable Engineering Technology Research Centre (SETechRC), Faculty of Engineering Technology, University Tun Hussein Onn Malaysia, Pagoh, Malaysia
  • 3 Department of Civil Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, Pagoh Education Hub, Pagoh, Malaysia
  • 4 College of Fisheries, Freshwater Aquaculture Center, Central Luzon State University, Science City of Munoz, Philippines Nueva Ecija
  • 5 Faculty of Social Sciences and Humanities, Universiti Malaysia Sarawak, (Unimas), Kota Samarahan, Sarawak
  • 6 School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia
Int J Phytoremediation, 2022 Feb 07.
PMID: 35130096 DOI: 10.1080/15226514.2022.2033688

Abstract

Microalgae cultivation is well known as a sustainable method for eco-friendly wastewater phycoremediation and valuable biomass production. This study investigates the feasibility and kinetic removal of organic compounds and nutrients from food processing wastewater (FPW) using Botryococcus sp. in an enclosed photobioreactor. Simultaneously, response surface methodology (RSM) via face-centered central composite design (FCCCD) was applied to optimize the effects of alum and chitosan dosage and pH sensitivity on flocculation efficiency. The maximum growth rate of Botryococcus sp. cultivated in FPW was 1.83 mg day-1with the highest removal of chemical oxygen demand (COD), total organic carbon (TOC), and total phosphorus (TP) after 12 days of phycoremediation of 96.1%, 87.2%, and 35.4%, respectively. A second-order polynomial function fits well with the experimental results. Both coagulant dosage and pH significantly (p 

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

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