Study of the effectiveness of a ZnO-TiO2 formulation in the degradation of humic substances in mature leachate by solar photocatalysis Brazil (2023)
- Authors:
- USP affiliated authors: IZÁRIO FILHO, HÉLCIO JOSÉ - EEL ; SIQUEIRA, ADRIANO FRANCISCO - EEL ; AGUIAR, LEANDRO GONÇALVES DE - EEL ; ALCÂNTARA, MARCO AURÉLIO KONDRACKI DE - EEL ; NAPOLEÃO, DIOVANA APARECIDA DOS SANTOS - EEL ; OLIVEIRA, GABRIEL CARACCIOLO KOENIGKAM DE - EEL ; NOHARA, NICOLY MILHARDO LOURENÇO - EEL
- Unidade: EEL
- DOI: 10.4136/ambi-agua.2932
- Assunto: ENGENHARIA QUÍMICA
- Keywords: heterogeneous photocatalysis; humic and fulvic acid; landfill leachate treatment; titanium dioxide; zinc oxide; óxido de zinco; tratamento de lixiviados de aterros sanitários; ácido húmico e fúlvico; dióxido de titânio; fotocatálise heterogênea
- Language: Inglês
- Abstract: Treatment of landfill leachate is an important environmental issue, especially in developing countries such as Brazil. Advanced oxidation processes (AOPs) have been considered interesting treatment alternatives. In this study, ZnO–TiO2 mixtures were incorporated into a paint polymer matrix and fixed onto supports. Paints were applied by overlapping coat layers on plates, resulting in high film thickness (600 ± 80 µm). Treatment of mature leachate by an AOP was conducted in a plug flow reactor connected to a stirred tank under solar irradiation. The objective was to evaluate the degradation of humic acid (HA) and fulvic acid + humins (FAH). The highest HA and FAH removal efficiencies were 62% ± 4.9% and 16% ± 4.2%, respectively. The kinetic model provided a coefficient of determination (R 2 ) of 0.974. Rate constants for HA and FAH removal were 2.96 and 1.03 × 10−3 min−1 , respectively. Statistical models for HA and FAH degradation had R 2 values of 0.96 and 0.99, respectively. Both approaches indicated that HA degradation is greater at acidic pH and higher TiO2 concentrations. FAH degradation was favored by acidic pH and higher ZnO concentrations. Statistical models showed the same mean difference in conversion between replicate runs of HA and FAH, suggesting a uniform diffusion of fractions through catalysts
- Imprenta:
- Publisher: IPABHI
- Publisher place: Taubaté, SP
- Date published: 2023
- Source:
- Título: Revista Ambiente e Agua
- ISSN: 1980-993X
- Volume/Número/Paginação/Ano: v.18, art. e2932, p.1-18, 2023
- Este periódico é de acesso aberto
- Este artigo é de acesso aberto
- URL de acesso aberto
- Cor do Acesso Aberto: gold
- Licença: cc-by
-
ABNT
NOHARA, Nicoly Milhardo Lourenço et al. Study of the effectiveness of a ZnO-TiO2 formulation in the degradation of humic substances in mature leachate by solar photocatalysis Brazil. Revista Ambiente e Agua, v. 18, p. 1-18, 2023Tradução . . Disponível em: https://doi.org/10.4136/ambi-agua.2932. Acesso em: 05 ago. 2025. -
APA
Nohara, N. M. L., Izario Filho, H. J., Siqueira, A. F., Aguiar, L. G. de, Oliveira, G. C. K. de, Nohara, E. L., et al. (2023). Study of the effectiveness of a ZnO-TiO2 formulation in the degradation of humic substances in mature leachate by solar photocatalysis Brazil. Revista Ambiente e Agua, 18, 1-18. doi:10.4136/ambi-agua.2932 -
NLM
Nohara NML, Izario Filho HJ, Siqueira AF, Aguiar LG de, Oliveira GCK de, Nohara EL, Alcântara MAK de, NAPOLEÃO DA dos S. Study of the effectiveness of a ZnO-TiO2 formulation in the degradation of humic substances in mature leachate by solar photocatalysis Brazil [Internet]. Revista Ambiente e Agua. 2023 ;18 1-18.[citado 2025 ago. 05 ] Available from: https://doi.org/10.4136/ambi-agua.2932 -
Vancouver
Nohara NML, Izario Filho HJ, Siqueira AF, Aguiar LG de, Oliveira GCK de, Nohara EL, Alcântara MAK de, NAPOLEÃO DA dos S. Study of the effectiveness of a ZnO-TiO2 formulation in the degradation of humic substances in mature leachate by solar photocatalysis Brazil [Internet]. Revista Ambiente e Agua. 2023 ;18 1-18.[citado 2025 ago. 05 ] Available from: https://doi.org/10.4136/ambi-agua.2932 - Processos Tecnológicos e modelagens matemáticas de oxidação de percolados de aterro sanitário
- Carbonaceous decomposition of a recalcitrant effluent treated by the photo-Fenton process: a kinetic approach
- Comparative Study of Data Analysis Techniques for Photo-Fenton Degradation of Landfill Leachate
- Binary Mixtures of ZnO/TiO2 for Solar Heterogeneous Photocatalysis of Non-Purgeable Organic Carbon in Landfill Leachate
- Movimentação de cádmio em colunas de solo com aplicação de lixiviado de aterro sanitário: Parâmetros de transporte
- Solar photo-Fenton oxidation of mature landfill leachate: empirical model and chemical inferences.
- Kinetic modeling of total organic carbon degradation in dairy wastewater
- Catalytic Ozonation Using Fe2+ in the Treatment of Dairy Effluent in a Semi-Batch Process with Recycle
- Degradation Kinetics of Landfill Leachate by Continuous-Flow Catalytic Ozonation
- Veículos elétricos: Um estudo descritivo de seus impactos ambientais
Informações sobre o DOI: 10.4136/ambi-agua.2932 (Fonte: oaDOI API)
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas