Removal of textile dyes by benefited marine shells wastes: From circular economy to multi-phenomenological modeling.

Autor: de Assis Filho RB; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil; Academic Department of Systems, Projects and Industrial Controls, Pernambuco Federal Institute of Education, Science and Technology, 500 Prof. Luís Freire Av., Cidade Universitária, 50740-545, Recife, Pernambuco, Brazil., Baptisttella AMS; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil., de Araujo CMB; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil; Department of Chemical Engineering, Faculty of Engineering, University of Porto, Dr. Roberto Frias St., W/n, 4200-465, Porto, Portugal., Fraga TJM; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil. Electronic address: tiago.fraga2012@gmail.com., de Paiva TMN; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil., de Abreu CAM; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil., da Motta Sobrinho MA; Department of Chemical Engineering, Federal University of Pernambuco, 1235 Prof. Moraes Rego Av., Cidade Universitária, 50740-520, Recife, Pernambuco, Brazil. Electronic address: mauricio.motta@ufpe.br.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2021 Oct 15; Vol. 296, pp. 113222. Date of Electronic Publication: 2021 Jul 09.
DOI: 10.1016/j.jenvman.2021.113222
Abstrakt: Marine shell wastes were thermally activated and characterized as aragonite and calcite phases and were used in the removal of synthetic anionic dyes, Bright Blue Acid (NB180) and Reactive Red 133 (RR133). Benefited marine shells were classified as low-cost (USD 0.33/g of adsorbent) in comparison with other reported materials. Furthermore, the absence of chemicals in the adsorbent preparation allows its further employment in economic activities. The coexistence of adsorption and exchange-precipitation reaction was responsible for up to 93% of dye removal, whilst the maximum adsorption capacities were 225 mg g -1 for NB180 and 36 mg g -1 for RR133. The observed kinetic behavior of the dye removal by the adsorbent allowed the proposal of a mechanism for dye-adsorbent interaction in liquid-solid interface considering both adsorption and exchange-precipitation reaction. Contribution of the exchange-precipitation reaction in the removal process was quantified as being approximately 75% for NB180 and 25% for RR133. The mathematical model that phenomenologically described the kinetic behavior of the dye removals gave the magnitude order of the kinetic parameters as k ads  = 8.67-9.49 min -1 and k p  = 1.18-2.84 min -1 , due to the adsorption and the (exchange-reaction)-precipitation, respectively. This work indicates the step (exchange reaction)-precipitation as an additional contribution to improve the dye removal from aqueous effluents, achieving in the evolution of the process up to 24% in terms of kinetic selectivity of removal.
(Copyright © 2021 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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