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Biochar Generated from Agro-Industry Sugarcane Residue by Low Temperature Pyrolysis Utilized as an Adsorption Agent for the Removal of Thiamethoxam Pesticide in Wastewater

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Abstract

Biochar produced from different raw materials by pyrolysis have been utilized as an alternative material for organic compound adsorption. This study aims to evaluate the use of biochar generated from sugar cane filter cake, after pyrolysis treatment at 380 °C, in the adsorption process of thiamethoxam pesticide in wastewater. The biochar was studied based on moisture, volatile matter, ash content, surface area and porosity, using elemental analysis, Fourier transform infrared spectroscopy, and scanning electron microscopy. The results showed that the use of biochar as an adsorbent for organic compounds is promising, due to its surface area (19.8 m2 g−1), mesoporosity, and functional groups, such as hydroxyl, present on the biochar surface. The Langmuir and Freundlich isothermal models were used for the adsorption study. The pseudo-first- and pseudo-second-order models were used in the kinetic study of the adsorption process. The results indicated that the adsorption process was well described by the Langmuir isotherm and pseudo-second-order models. Finally, the rate of thiamethoxam removal by biochar was approximately 70% over a period of 60 min, and biochar is, therefore, suitable for the decontamination of wastewater with thiamethoxam.

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All data generated or analyzed during this study are included in this published article.

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Funding

The research work is supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) process number 429462/2018-2, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), and Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ) (E-26/202.696/2019 and E-26/202.296/2018).

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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Julia Oliveira Fernandes; Cassiano Augusto Rolim Bernardino; Claudio Fernando Mahler; Ricardo Erthal Santelli; Bernardo Ferreira Braz; Renata Coura Borges; Márcia Cristina da Cunha Veloso; Gilberto Alves Romeiro, and Fernando Henrique Cincotto. The first draft of the manuscript was written by Julia Oliveira Fernandes and Cassiano Augusto Rolim Bernardino, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Cassiano Augusto Rolim Bernardino or Fernando Henrique Cincotto.

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Highlights

• Biochar is generated from sugar cane filter cake by low temperature pyrolysis treatment

• Adsorption and removal processes of thiamethoxam pesticide in wastewater

• The adsorption process was well described by the Langmuir isotherm and pseudo-second order

• The rate of pesticide removal by biochar was approximately 70% over a period of 60 min

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Fernandes, J.O., Bernardino, C.A.R., Mahler, C.F. et al. Biochar Generated from Agro-Industry Sugarcane Residue by Low Temperature Pyrolysis Utilized as an Adsorption Agent for the Removal of Thiamethoxam Pesticide in Wastewater. Water Air Soil Pollut 232, 67 (2021). https://doi.org/10.1007/s11270-021-05030-5

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  • DOI: https://doi.org/10.1007/s11270-021-05030-5

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