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Response surface methodology applied to tropical freshwater treatment.
Arruda, Priscila Morgon; Pereira-Filho, Edenir Rodrigues; Libânio, Marcelo; Fagnani, Enelton.
Afiliação
  • Arruda PM; School of Technology, University of Campinas, Limeira, Brazil.
  • Pereira-Filho ER; Department of Chemistry, Federal University of São Carlos, São Carlos, Brazil.
  • Libânio M; Department of Hydraulic Engineering and Water Resources, Engineering College, Federal University of Minas Gerais, Belo Horizonte, Brazil.
  • Fagnani E; School of Technology, University of Campinas, Limeira, Brazil.
Environ Technol ; 41(7): 901-911, 2020 Mar.
Article em En | MEDLINE | ID: mdl-30122148
This paper presents the profits and disadvantages of the chemometrics approach instead of the one-factor-at-a-time (OFAT) coagulation diagram approach for tropical water physicochemical treatment. Central composite design associate to response surface methodology (CCD-RSM) is used to find the real best conditions for coagulant dosage and pH aiming at high-turbidity removal. The number of experiments needed to chemometrics model construction (12) is comparatively smaller than that used in the coagulation diagram (84), saving financial and environmental resources. Arguments for Water Treatment Plants (WTP) considering the replacement of coagulation diagram approach by the CCD-RSM approach in drinking water treatment are presented. Chemometrics models are all constructed on a free software platform, providing the best pH within the range 7.7-8.1, and the best coagulant dosage (polyaluminium chloride, PAC) between 2.0 and 3.1 mg Al2O3 L-1 (equivalent in mass). CCD-RSM provides a faster, lower-cost and more reliable alternative tool for WTP decision-making instead of the OFAT model, mainly for waters more affected by seasonal effects as can be seen in tropical and subtropical countries.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Purificação da Água Tipo de estudo: Prognostic_studies Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Purificação da Água Tipo de estudo: Prognostic_studies Idioma: En Revista: Environ Technol Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido