Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation
Biocrude oil generation from microalgae and cyanobacteria through hydrothermal liquefaction generates an aqueous by-product (post-hydrothermal liquefaction wastewater (PHWW)) rich in organic matter and aromatic compounds. Although anaerobic digestion has been used with promising results, the process...
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| Formato: | Artículo |
| Lenguaje: | inglés |
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2021
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| author | Diana Quispe-Arpasi Beatriz Egerland Bueno Evaldo Luiz Gaeta Espíndola Rogers Ribeiro Giovana Tommaso |
| author_browse | Beatriz Egerland Bueno Diana Quispe-Arpasi Evaldo Luiz Gaeta Espíndola Giovana Tommaso Rogers Ribeiro |
| author_facet | Diana Quispe-Arpasi Beatriz Egerland Bueno Evaldo Luiz Gaeta Espíndola Rogers Ribeiro Giovana Tommaso |
| author_sort | Diana Quispe-Arpasi |
| collection | Producción científica |
| description | Biocrude oil generation from microalgae and cyanobacteria through hydrothermal liquefaction generates an aqueous by-product (post-hydrothermal liquefaction wastewater (PHWW)) rich in organic matter and aromatic compounds. Although anaerobic digestion has been used with promising results, the process is insufficient to reduce the remaining recalcitrant compounds. Photodegradation using UV/TiO2 was investigated as a post-treatment system of anaerobically digested-PHWW (AD-PHWW). The effects of initial pH and addition of H2O2 on the photodegradation efficiency in terms of chemical oxygen demand (COD), total phenolic content (TPh), and color removal were studied using a face-centered central composite design. Initial pH was highly influential for COD ( and TPh ( removal, whereas the addition of H2O2 had a higher impact on color removal ( . Optimum conditions at pH of 9.6 and H2O2 concentration of 3.55 g L−1 reached values of 50% for COD, 83% for TPh, and 95% for color after 240 min of irradiation. AD-PHWW photodegradation followed a pseudo-first-order kinetic. Energy recovery, including the biocrude oil from Spirulina, resulted in 41%. Results of ecotoxicity assays with Daphania similis and Eruca sativa Mill indicated that PHWW-treated samples were not negatively influenced by TiO2/UV treatment. |
| format | Article |
| id | oai:cris.upeu.edu.pe:20.500.15037/519 |
| institution | UPeU |
| language | English |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
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| spelling | oai:cris.upeu.edu.pe:20.500.15037/5192026-11-02T22:34:06ZPost-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV PhotodegradationDiana Quispe-ArpasiBeatriz Egerland BuenoEvaldo Luiz Gaeta EspíndolaRogers RibeiroGiovana TommasoHydrothermal liquefactionPhotodegradationChemistryChemical oxygen demandWastewaterNuclear chemistryAnaerobic digestionEnvironmental chemistryPhotocatalysisOrganic chemistryEnvironmental engineeringCatalysisEnvironmental scienceMethaneHydrothermal liquefactionPhotodegradationChemistryChemical oxygen demandWastewaterNuclear chemistryAnaerobic digestionEnvironmental chemistryPhotocatalysisOrganic chemistryEnvironmental engineeringCatalysisEnvironmental scienceMethanePhysical Sciences Chemistry Analytical Chemistry Petroleum Processing and AnalysisPhysical Sciences Environmental Science Water Science and Technology Advanced oxidation water treatmentPhysical Sciences Engineering Biomedical Engineering Thermochemical Biomass Conversion ProcessesBiocrude oil generation from microalgae and cyanobacteria through hydrothermal liquefaction generates an aqueous by-product (post-hydrothermal liquefaction wastewater (PHWW)) rich in organic matter and aromatic compounds. Although anaerobic digestion has been used with promising results, the process is insufficient to reduce the remaining recalcitrant compounds. Photodegradation using UV/TiO2 was investigated as a post-treatment system of anaerobically digested-PHWW (AD-PHWW). The effects of initial pH and addition of H2O2 on the photodegradation efficiency in terms of chemical oxygen demand (COD), total phenolic content (TPh), and color removal were studied using a face-centered central composite design. Initial pH was highly influential for COD ( and TPh ( removal, whereas the addition of H2O2 had a higher impact on color removal ( . Optimum conditions at pH of 9.6 and H2O2 concentration of 3.55 g L−1 reached values of 50% for COD, 83% for TPh, and 95% for color after 240 min of irradiation. AD-PHWW photodegradation followed a pseudo-first-order kinetic. Energy recovery, including the biocrude oil from Spirulina, resulted in 41%. Results of ecotoxicity assays with Daphania similis and Eruca sativa Mill indicated that PHWW-treated samples were not negatively influenced by TiO2/UV treatment.Article10.1007/s11270-021-05263-4https://hdl.handle.net/20.500.15037/519W3194365606enWater Air & Soil Pollution0049-69791573-29322021-08-192026-06-13T08:15:58Z2026-06-13T08:15:58Z |
| spellingShingle | Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Physical Sciences Chemistry Analytical Chemistry Petroleum Processing and Analysis Physical Sciences Environmental Science Water Science and Technology Advanced oxidation water treatment Physical Sciences Engineering Biomedical Engineering Thermochemical Biomass Conversion Processes Diana Quispe-Arpasi Beatriz Egerland Bueno Evaldo Luiz Gaeta Espíndola Rogers Ribeiro Giovana Tommaso Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title | Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title_full | Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title_fullStr | Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title_full_unstemmed | Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title_short | Post-treatment of Anaerobically Digested Hydrothermal Liquefaction Wastewater Using UV Photodegradation |
| title_sort | post treatment of anaerobically digested hydrothermal liquefaction wastewater using uv photodegradation |
| topic | Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Physical Sciences Chemistry Analytical Chemistry Petroleum Processing and Analysis Physical Sciences Environmental Science Water Science and Technology Advanced oxidation water treatment Physical Sciences Engineering Biomedical Engineering Thermochemical Biomass Conversion Processes |
| topic_facet | Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Hydrothermal liquefaction Photodegradation Chemistry Chemical oxygen demand Wastewater Nuclear chemistry Anaerobic digestion Environmental chemistry Photocatalysis Organic chemistry Environmental engineering Catalysis Environmental science Methane Physical Sciences Chemistry Analytical Chemistry Petroleum Processing and Analysis Physical Sciences Environmental Science Water Science and Technology Advanced oxidation water treatment Physical Sciences Engineering Biomedical Engineering Thermochemical Biomass Conversion Processes |
| url | https://hdl.handle.net/20.500.15037/519 |
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