Academic Journal
Adsorption study of micropollutants by biosorbents from different rice harvest residues for large scale applications ; Estudo de adsorção de poluentes emergentes por biosorventes de diferentes resíduos da colheita de arroz para aplicações em larga escala
| العنوان: | Adsorption study of micropollutants by biosorbents from different rice harvest residues for large scale applications ; Estudo de adsorção de poluentes emergentes por biosorventes de diferentes resíduos da colheita de arroz para aplicações em larga escala |
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| المؤلفون: | Lira, Patricia da Rosa, Cornelio, Jhon Pablo Lima, Lira, Paola da Rosa, Thue, Pascal Silas, Lima, Eder Claudio, Menezes, Jacson Weber, Valsecchi, Chiara |
| المصدر: | Ciência e Natura; Vol. 46 (2024): Publicação contínua; e80262 ; Ciência e Natura; v. 46 (2024): Publicação contínua; e80262 ; 2179-460X ; 0100-8307 |
| بيانات النشر: | Universidade Federal de Santa Maria |
| سنة النشر: | 2024 |
| المجموعة: | Universidade Federal de Santa Maria: Portal de Periódicos Eletrônicos da UFSM |
| مصطلحات موضوعية: | Sustainability, Water purification, Water filters, Purificação de águas, Sustentável, Agrotóxicos |
| الوصف: | A large-scale removal of micropollutants from residual waters is an urgent problem to be tackled. In this work, three biomasses from agricultural residues, produced by different processes, were compared in terms of the adsorption efficiency of toxic species in water. The biosorbents used were rice husk ashes (RHA), leached rice husk silica (SRHA), and rice straw ashes (RSA). Two representatives of the most common micropollutants present in the effluent waters, 2-nitrophenol and the pesticide 2,4-dichlorophenoxyacetic acid (2,4-D), were chosen as probing molecules. The biosorbents were characterized by SEM, X-Ray FRX, FT-IR, BET, pHcpz, and hydrophobicity; surface areas of 175.81 m2 g-1(SRHA), 66.11 m2 g-1 (RHA) and 42.77 m2 g-1 (RSA) were found, together with a microporous morphology. Firstly, the efficiency of removal was evaluated through adsorption isotherms: RHA and SRHA proved to be more efficient, with an adsorption capacity of 29.14 mg g-1 and 23.75 mg g-1 of 2-nitrophenol and 10.82 mg g-1 and 10.55 mg g-1 for 2,4-D. In particular, the removal of more than 90% for both 2-Nitrophenol and 2,4-D stands out as a very promising result. In light of these results, pillow-shaped filters with RHA were fabricated and tested for the first time for 2-Nitrophenol removal on a larger scale. The positive outcome (removal efficiency of 73%) demonstrates the possibility of producing filters based on sustainable and cheap biosorbents that could be implemented industrially to improve water purification as well as to implement the concept of circular economy. ; A remoção de micropoluentes em grande escala das águas residuais é um problema urgente a ser resolvido. Neste trabalho foram comparadas três biomassas provenientes de resíduos agrícolas, produzidas por diferentes processos, em termos de eficiência de adsorção de espécies tóxicas em água. Os biossorventes utilizados foram a cinza de casca de arroz (RHA), a sílica lixiviada da casca de arroz (SRHA) e a cinza de palha de arroz (RSA). Dois representantes dos ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | Portuguese |
| Relation: | https://periodicos.ufsm.br/cienciaenatura/article/view/80262/63602; https://periodicos.ufsm.br/cienciaenatura/article/view/80262 |
| DOI: | 10.5902/2179460X80262 |
| الاتاحة: | https://periodicos.ufsm.br/cienciaenatura/article/view/80262 https://doi.org/10.5902/2179460X80262 |
| Rights: | Copyright (c) 2024 Ciência e Natura ; http://creativecommons.org/licenses/by-nc-sa/4.0 |
| رقم الانضمام: | edsbas.BC55B694 |
| قاعدة البيانات: | BASE |
| DOI: | 10.5902/2179460X80262 |
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