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Remediation through the coordinated use of local rice husk residues for the selective adsorption of iron and nickel in real landfill leachate.
Dos Santos, Bárbara Luiza Brandenburg; Vieira, Yasmin; Abou Taleb, Manal F; Ibrahim, Mohamed M; Reis, Mirela Araujo; do Nascimento, Bruna Figueiredo; Oliveira, Marcos Leandro Silva; Silva, Luis Felipe Oliveira; Dotto, Guilherme Luiz.
Afiliação
  • Dos Santos BLB; Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-8, 97105-900, Santa Maria, RS, Brazil.
  • Vieira Y; Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-8, 97105-900, Santa Maria, RS, Brazil.
  • Abou Taleb MF; Department of Chemistry, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
  • Ibrahim MM; Department of Chemistry, College of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia.
  • Reis MA; Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-8, 97105-900, Santa Maria, RS, Brazil.
  • do Nascimento BF; Department of Chemical Engineering, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, 50670-910, Recife, PE, Brazil.
  • Oliveira MLS; Universidad De La Costa, Calle 58 # 55-66, 080002 Barranquilla, Atlántico, Colombia.
  • Silva LFO; Universidad De La Costa, Calle 58 # 55-66, 080002 Barranquilla, Atlántico, Colombia.
  • Dotto GL; Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 1000-8, 97105-900, Santa Maria, RS, Brazil. Electronic address: guilherme_dotto@yahoo.com.br.
J Environ Manage ; 358: 120893, 2024 May.
Article em En | MEDLINE | ID: mdl-38640761
ABSTRACT
Herein, we demonstrate the prospects of tackling several environmental problems by transforming a local rice husk residue into an effective adsorbent, which was then applied for the treatment of real landfill leachate (LL). The study focused on establishing (i) the effect of simple washing on morphological aspects, (ii) evaluating target adsorption capacity for total iron (Fe) and nickel (Ni), (iii) determining regeneration and reuse potential of the adsorbent and (iv) complying to the requirements of worldwide legislations for reuse of treated LL wastewater. The adsorbent was prepared by employing a simple yet effective purification process that can be performed in situ. The LL was collected post-membrane treatment, and the characterizations revealed high concentrations of Fe, Ni, and organic matter content. The simple washing affected the crystallinity, resulting in structural alterations of the adsorbents, also increasing the porosity and specific surface. The adsorption process for Ni occurred naturally at pH 6, but adjusting the pH to 3 significantly improved removal efficiency and adsorption capacity for total Fe. The kinetics were accurately described by the pseudo-second-order model, while the Langmuir model provided a better fit for the isotherms. The adsorbent was stable for 5 reuses, and the metals adsorbed were recovered through basic leaching. The removal capacities achieved underscore the remarkable effectiveness of the process, ensuring the treated LL wastewater meets rigorous global environmental legislations for safe use in irrigation. Thus, by employing the compelling methods herein optimized it is possible to refer to the of solving three environmental problems at once.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oryza / Poluentes Químicos da Água / Ferro / Níquel Idioma: En Revista: J Environ Manage Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oryza / Poluentes Químicos da Água / Ferro / Níquel Idioma: En Revista: J Environ Manage Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido