An assessment of the autotrophic/heterotrophic synergism in microalgae under mixotrophic mode and its contribution in high-rate phosphate recovery from wastewater
{"title":"An assessment of the autotrophic/heterotrophic synergism in microalgae under mixotrophic mode and its contribution in high-rate phosphate recovery from wastewater","authors":"","doi":"10.1016/j.biortech.2024.131450","DOIUrl":null,"url":null,"abstract":"<div><p>Dual carbon metabolisms and the synergism contribute to improving nutrient recovery under mixotrophy. However, how synergism influences nutrient recovery has yet to be understood, which is revealed in the current study. Due to dual carbon metabolisms and synergism,<!--> <!-->the PO<sub>4</sub><sup>−</sup>-P recovery rate under mixotrophy reached 0.34 mg L<sup>−1</sup> h<sup>−1</sup>. Due to the internal cycling of respiratory CO<sub>2</sub>, the mutualistic index (MI) in terms of synergism helped <em>Scenedesmus</em> accumulate 27.49 % more biomass under mixotrophy than sum of the two controls. In contrast, MI contributed 0.26 g L<sup>−1</sup> d<sup>−1</sup> to the total modeled mixotrophic productivity of 1.15 g L<sup>−1</sup> d<sup>−1</sup>. To total modeled PO<sub>4</sub><sup>−</sup>-P recovery, mixotrophic-auto, and mixotrophic-hetero shares were 42 % and 58 %. The synergism under mixotrophy contributed 20 % in total PO<sub>4</sub><sup>−</sup>-P recovery. The PO<sub>4</sub><sup>−</sup>-P recovery rate under mixotrophy<!--> <!-->was comparable to other biological P removal methods. These findings emphasize the potential of synergism in improving productivity<!--> <!-->and promoting resource recovery for sustainable wastewater treatment.</p></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":null,"pages":null},"PeriodicalIF":9.7000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioresource Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0960852424011544","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
Dual carbon metabolisms and the synergism contribute to improving nutrient recovery under mixotrophy. However, how synergism influences nutrient recovery has yet to be understood, which is revealed in the current study. Due to dual carbon metabolisms and synergism, the PO4−-P recovery rate under mixotrophy reached 0.34 mg L−1 h−1. Due to the internal cycling of respiratory CO2, the mutualistic index (MI) in terms of synergism helped Scenedesmus accumulate 27.49 % more biomass under mixotrophy than sum of the two controls. In contrast, MI contributed 0.26 g L−1 d−1 to the total modeled mixotrophic productivity of 1.15 g L−1 d−1. To total modeled PO4−-P recovery, mixotrophic-auto, and mixotrophic-hetero shares were 42 % and 58 %. The synergism under mixotrophy contributed 20 % in total PO4−-P recovery. The PO4−-P recovery rate under mixotrophy was comparable to other biological P removal methods. These findings emphasize the potential of synergism in improving productivity and promoting resource recovery for sustainable wastewater treatment.
期刊介绍:
Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies.
Topics include:
• Biofuels: liquid and gaseous biofuels production, modeling and economics
• Bioprocesses and bioproducts: biocatalysis and fermentations
• Biomass and feedstocks utilization: bioconversion of agro-industrial residues
• Environmental protection: biological waste treatment
• Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.