| Title: | Nutrient and pathogen removal from anaerobically treated black water by microalgae |
| Author(s): | Slompo NDM; Quartaroli L; Fernandes TV; Silva G; Daniel LA; |
| Address: | "Department of Hydraulics and Sanitation, University of Sao Paulo (EESC-USP), Sao Carlos, Sao Paulo, Brazil. Electronic address: nathaliedmiranda@yahoo.com.br. Department of Environmental and Civil Engineering, Sao Paulo State University (UNESP), Bauru, Sao Paulo, Brazil. Electronic address: larissaquartaroli@gmail.com. Department of Aquatic Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Wageningen, the Netherlands. Electronic address: t.fernandes@nioo.knaw.nl. Department of Environmental and Civil Engineering, Sao Paulo State University (UNESP), Bauru, Sao Paulo, Brazil. Electronic address: gustavo.ribeiro@unesp.br. Department of Hydraulics and Sanitation, University of Sao Paulo (EESC-USP), Sao Carlos, Sao Paulo, Brazil. Electronic address: ldaniel@sc.usp.br" |
| DOI: | 10.1016/j.jenvman.2020.110693 |
| ISSN/ISBN: | 1095-8630 (Electronic) 0301-4797 (Linking) |
| Abstract: | "The demand for systems that efficiently and sustainably recover value-added compounds and materials from waste streams is a major challenge. The use of wastewater as a source for recovery of carbon and nutrients is an attractive and sustainable alternative. In this study, anaerobically treated black water was treated in photobioreactors (PBRs) inoculated with Chlorella sorokiniana, and the process was investigated in terms of phosphorus and nitrogen removal, biomass growth, and the removal of pathogens. The consumption of bicarbonate (alkalinity) and acetate (volatile fatty acids) as carbon sources by microalgae was investigated. The average nutrient removal achieved was 66% for N and 74% for P. A high consumption of alkalinity (83%) and volatile organic acids (76%) was observed, which suggests that these compounds were used as a source of carbon. The biomass production was 73 mg L(-1) day(-1), with a mean biomass of 0.7 g L(-1) at the end of the batch treatment. At the end of the experiments, a log removal/inactivation of 0.51 log for total coliforms and 2.73 log for Escherichia coli (E. coli) was observed. The configuration used, a flat-panel PBR operated in batch mode without CO(2) supplementation, is a cost-effective and environmentally sustainable method for recovering of nutrients and production of algal biomass" |
| Keywords: | Biomass *Chlorella Escherichia coli *Microalgae Nitrogen Nutrients Phosphorus Photobioreactors Wastewater Water Chlorella sorokiniana Decentralized sanitation; |
| Notes: | "MedlineSlompo, Nathalie Dyane Miranda Quartaroli, Larissa Fernandes, Tania Vasconcelos Silva, Gustavo Henrique Ribeiro da Daniel, Luiz Antonio eng England 2020/06/09 J Environ Manage. 2020 Aug 15; 268:110693. doi: 10.1016/j.jenvman.2020.110693. Epub 2020 May 14" |
