ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Microcystin-LR removal in water using the system SrZr_XSn_1-XO₃: influence of B cation on the structural organization of perovskite

Luciano B. Ramo, Adriele G. Da Silva, Cecília X. Pereira, Cleber Silva Torres, Erivan P. S. Júnior, Gaspar C. Martins, Maria Da Conceição De M. Torres, Mary C. F. Alves, and Simone S. Simões

Science and Technology Center, Chemistry Graduate Program, Chemistry Department, Paraiba State University, Campina Grande, Brazil

E-mail: simonesimoes@yahoo.com

Received: 1 April 2020  Accepted: 7 November 2020

Abstract:

According to the concentration of toxins in water reservoirs, cyanotoxins can cause severe intoxication. In this way technologies must be developed to remove or decrease the concentration of the some toxins from water. Furthermore, it is necessary to ensure that the byproduct of the processes used have low or no toxicity. One of the methodologies studied to this purpose is the Advanced Oxidation Processes and mixed oxides, that have attracted the attention due mainly to their good yields, low price and thermal stability. The efficiency of a photocatalytic process during degradation of organic pollutants depend on several factors. The present work has as its main objective to evaluate the photocatalytic performance of modified SrZr_xSn_1-xO₃ oxides for MC-LR degradation in water supply using a Box–Behnken design. The oxides presented is novel and innovative product. The preparation of the material by chemical solution method and the application to microcystin degradation are novelty reported by the first time at this paper. The significance of some experimental factors as well as the interaction among them was studied. In addition, the cytotoxicity of the MC-LR degradation byproduct was evaluated and a degradation route suggested.

Keywords: Design experiment; Modified oxides; Toxins; Water treatment

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01423-8

Chemical Papers 75 (4) 1649–1667 (2021)