Effect of hydraulic retention time and treated urban wastewater ratio on progressive adaptation of an inoculated microalgae in membrane photobioreactors.

Autor: Díaz V; Department of Civil Engineering, University of Granada 18071, Granada, Spain; Institute of Water Research, University of Granada 18071, Granada, Spain. Electronic address: vdiaz@ugr.es., Antiñolo L; Department of Civil Engineering, University of Granada 18071, Granada, Spain; Institute of Water Research, University of Granada 18071, Granada, Spain. Electronic address: lantinolo@ugr.es., Poyatos JM; Department of Civil Engineering, University of Granada 18071, Granada, Spain; Institute of Water Research, University of Granada 18071, Granada, Spain. Electronic address: jpoyatos@ugr.es., Muñío MDM; Institute of Water Research, University of Granada 18071, Granada, Spain; Department of Chemical Engineering, University of Granada 18071, Granada, Spain. Electronic address: mmunio@ugr.es., Martín-Pascual J; Department of Civil Engineering, University of Granada 18071, Granada, Spain; Institute of Water Research, University of Granada 18071, Granada, Spain. Electronic address: jmpascual@ugr.es.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2024 Dec; Vol. 371, pp. 123005. Date of Electronic Publication: 2024 Oct 30.
DOI: 10.1016/j.jenvman.2024.123005
Abstrakt: Currently, there is a growing concern about water scarcity. The rising demand for wastewater treatment systems that facilitate the reuse of wastewater has resulted in a focus on the use of microalgae in sustainable treatments. These methods not only eliminate nutrients from the wastewater but also produce biomass that can be used to obtain high-value products. This study aimed to observe the effect of different hydraulic retention times (HRTs) and treated urban wastewater (TUWW) percentages on the growth of microalgae biomass and nutrient consumption in membrane photobioreactors. Microalgae biomass growth increases with HRT regardless of the percentage of TUWW. Biomass concentration stabilises at between 40% and 60% TUWW but significantly increases when 100% TUWW is used, resulting in the highest biomass concentrations. As HRT increases, ammonium and total nitrogen consumption also rise. A positive trend in ammonium consumption was observed with increasing TUWW, reaching its peak with 100% TUWW. The optimal conditions for biomass growth and nutrient removal are achieved with a 7-day HRT and 100% TUWW as influent, which was confirmed as optimal with the response surface methodology.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Jaime Martin-Pascual reports financial support, administrative support, and equipment, drugs, or supplies were provided by University of Granada. Jaime Martin-Pascual reports a relationship with University of Granada that includes: employment. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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