PHYSICOCHEMICAL TREATMENT USING O3/UV IN BIODIGESTER EFFLUENTS
DOI:
https://doi.org/10.56238/revgeov17n1-005Keywords:
O₃/UV, Digestate, Regulations, Anaerobic Digestion, True ColorAbstract
The search for effective and low-cost solutions for wastewater treatment, aimed at mitigating its high potential for environmental degradation, has led to the evaluation of anaerobic digestion. Although it is an economical and efficient process for degrading organic matter, anaerobic digestion generates digestate, a by-product that, depending on its composition, requires rigorous post-treatment. This study aimed to assess the effectiveness of the O₃/UV (Ozone/Ultraviolet Radiation) process, an Advanced Oxidation Process (AOP), in degrading digestate collected from a biodigester in a meat-processing industry, with the goal of meeting Brazilian discharge standards. The treatment was carried out for two hours, and a comparative evaluation between raw and treated digestate analyzed pH, True Color, Chemical Oxygen Demand (COD), and Ammoniacal Nitrogen (N–NH₃). The results indicated remarkable performance of the O₃/UV process, with an 83.54% removal of True Color and a 45.96% decrease in COD, while pH increased from 7.5 to 8.4 and N–NH₃ remained stable. In conclusion, although the O₃/UV treatment did not fully meet all requirements of current regulations, it proved to be a technically viable and promising alternative due to its high potential to improve the physicochemical characteristics of the digestate, significantly reducing its environmental impact.
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References
AMARAL, A. C.; STEINMETZ, R. L. R.; KUNZ, A. Os biodigestores. In:. Fundamentos da digestão anaeróbia, purificação do biogás, uso e tratamento do digestato. Concórdia: Sbera: Embrapa Suínos e Aves, 2019. p. 13–26.
BOLNER, K. C. S.; BALDISSEROTTO, B. Water pH and urinary excretion in silver catfish Rhamdia quelen. Journal of Fish Biology, v. 70, p. 50–64, 2007.
BRASIL. Conselho Nacional do Meio Ambiente (CONAMA). Resolução CONAMA n. 430, de 2011. Disponível em: https://www.suape.pe.gov.br/pt/publicacoes/245-resolucao/185-conama-n-430-de-2011?layout=publicacoes. Acesso em: 23 abr. 2025.
BUSANELLO, Giovanni Martins et al. Acute toxicity of ammonia for soft coral Xenia umbellata (Lamarck, 1916). Arquivos de Ciências do Mar, Fortaleza, v. 57, n. 2, p. 1–10, 2024. Disponível em: https://doi.org/10.32360/acmar.v57i2.92219. Acesso em: 24 fev. 2025.
CANDIDO, Daniela et al. Integration of swine manure anaerobic digestion and digestate nutrients removal/recovery under a circular economy concept. Journal of Environmental Management, v. 301, 2022, 113825. DOI: https://doi.org/10.1016/j.jenvman.2021.113825.
CIBIOGÁS – CENTRO INTERNACIONAL DE ENERGIAS RENOVÁVEIS. Webinar: Panorama do biogás no Brasil – 2022. [S. l.], 2022. Disponível em: https://materiais.cibiogas.org/webinar-panorama-do-biogas-no-brasil-2022. Acesso em: 17 jul. 2025.
DIAS, Evllen Cardoso et al. Qualidade físico-química, microbiológica e a toxicidade de corpos hídricos do Parque Tecnológico Vandeci Rack em Ji-Paraná, Rondônia. South American Journal of Basic Education, Technical and Technological, [S. l.], v. 6, n. 1, 2019. Disponível em: https://teste-periodicos.ufac.br/index.php/SAJEBTT/article/view/2176. Acesso em: 7 abr. 2025.
FIGUEIREDO, F. M. et al. Exploratory study of limnological parameters during the cycle of tambaqui fingerlings. Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental, [S. l.], v. 22, p. e11, 2018. DOI: https://doi.org/10.5902/2236117034580. Disponível em: https://periodicos.ufsm.br/reget/article/view/34580. Acesso em: 15 abr. 2025.
GHANBARI, F. et al. Evaluation of peroxymonosulfate/O₃/UV process on a real polluted water with landfill leachate: Feasibility and comparative study. Korean Journal of Chemical Engineering, v. 38, p. 1416–1424, 2021. DOI: https://doi.org/10.1007/s11814-021-0782-8.
LU, Hai; LI, Qingpo; FENG, Weihao. Application progress of O₃/UV advanced oxidation technology in the treatment of organic pollutants in water. Sustainability, v. 14, n. 3, p. 1556, 28 jan. 2022. DOI: https://doi.org/10.3390/su14031556. Acesso em: 23 abr. 2025.
LU, Tao et al. Efficient degradation of evaporative condensing liquid of shale gas wastewater using O₃/UV process. Process Safety and Environmental Protection, [S. l.], v. 121, p. 175–183, 2019. DOI: https://doi.org/10.1016/j.psep.2018.10.011. Acesso em: 23 abr. 2025.
NAÇÕES UNIDAS NO BRASIL. Objetivos de Desenvolvimento Sustentável. [S. l.], 2025. Disponível em: https://brasil.un.org/pt-br/sdgs. Acesso em: 17 jul. 2025.
PARANÁ. Instituto Água e Terra (IAT). Anexo 7: CEMA 70/09 - Padrões para o lançamento de efluentes líquidos. Disponível em: https://www.iat.pr.gov.br/sites/agua-terra/arquivos_restritos/files/documento/2020-09/anexo_7_cema_70-09_padroes_para_o_lancamento_de_efluentes_liquidos.pdf. Acesso em: 23 abr. 2025.
PESENTI, M. E. A. et al. Avaliação do potencial biorremediador dos fungos Candida spp. e Trichophyton spp. no tratamento de lixiviado proveniente de aterro sanitário. Holos, [S. l.], v. 39, n. 4, 2023. DOI: https://doi.org/10.15628/holos.2023.16307. Disponível em: https://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/16307. Acesso em: 23 jul. 2025.
POURGHOLI, Mehrangiz et al. Removal of Dye and COD from Textile Wastewater Using AOP (UV/O₃, UV/H₂O₂, O₃/H₂O₂ and UV/H₂O₂/O₃). Revista de Saúde Ambiental e Desenvolvimento Sustentável, [S. l.], v. 3, n. 4, 20 dez. 2018. DOI: https://doi.org/10.18502/jehsd.v3i4.223. Acesso em: 23 abr. 2025.
RUFFATTO, Murilo Vendramin. Avaliação do uso de radiação UV, ozônio e catalisadores bem como suas combinações para degradação do herbicida 2,4-D. 2023. Dissertação (Mestrado em Engenharia Química) – Universidade Federal de Santa Maria, Santa Maria, 2023. Disponível em: http://hdl.handle.net/10183/267639. Acesso em: 23 abr. 2025.
SIQUEIRA MANRIQUE PINHEIRO, Lucas et al. Toxicidade aguda da amônia em pacu (Piaractus mesopotamicus). Revista Acadêmica Ciência Animal, [S. l.], v. 19, p. 1–8, 2021. DOI: https://doi.org/10.7213/acad.2021.19004. Acesso em: 15 abr. 2025.
SHAHAMAT, Yousef Dadban et al. Removal of azo red-60 dye by advanced oxidation process O₃/UV from textile wastewaters using Box-Behnken design. Inorganic Chemistry Communications, v. 143, p. 109785, 2022. Disponível em: https://www.sciencedirect.com/science/article/pii/S1387700322005937. Acesso em: 18 jul. 2025. DOI: https://doi.org/10.1016/j.inoche.2022.109785.
SHARMA, S.; CHOKSHI, N.; RUPARELIA, J. P. Efeito dos parâmetros operacionais no processo de O₃, O₃/UV, O₃/UV/PS usando um reator de coluna de bolhas para degradação de corantes reativos. Journal of The Institution of Engineers (India): Series A, v. 104, p. 565–578, 2023. DOI: https://doi.org/10.1007/s40030-023-00735-8.
VAL, A. L. et al. Responses of an Amazonian teleost, the tambaqui (Colossoma macropomum), to low pH in extremely soft water. Physiological Zoology, v. 71, p. 658–670, 1998.
WEN, Diya; CHEN, Bing; LIU, Bo. Um processo de ultrassom/O₃ e UV/O₃ para tratamento de efluentes da indústria de atrazina: um estudo experimental em múltiplas escalas. Water Science and Technology, Londres, v. 85, n. 1, p. 229–243, 1 jan. 2022. DOI: https://doi.org/10.2166/wst.2021.633. Disponível em: https://iwaponline.com/wst/article/85/1/229/83690. Acesso em: 23 jul. 2025.
ZADEH, Kobra Rajabi; MALAKOOTIAN, Mohammad. O₃/UV photo-oxidation for the removal of reactive yellow 3 dye from wastewater. Desalination and Water Treatment, [S. l.], v. 81, p. 322–326, 2017. ISSN 1944-3986. DOI: https://doi.org/10.5004/dwt.2017.21178. Acesso em: 23 abr. 2025.
ZHAO, Zhiwei; GAN, Pengfei; ZHU, Chengjun; LI, Yunyi; LIU, Wen; TONG, Meiping; YE, Jiangyu; LIANG, Jialiang. Comparative evaluation of MSW incineration leachate treatment by heterogeneous catalytic O₃ and UV/O₃: the unexpected contribution of high salinity and overlooked role of excited state. Chemosphere, [S. l.], v. 307, parte 4, 2022. ISSN 0045-6535. DOI: https://doi.org/10.1016/j.chemosphere.2022.136143. Disponível em: https://www.sciencedirect.com/science/article/pii/S0045653522026364. Acesso em: 23 jul. 2025.
