Adsorption of hexavalent chromium on a coal beneficiation tailing material in batch and fixed-bed column

Acta Brasiliensis

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Title Adsorption of hexavalent chromium on a coal beneficiation tailing material in batch and fixed-bed column

Adsorção de cromo hexavalente usando rejeito de beneficiamento de carvão em modelo de batelada e coluna de leito fixo
 
Creator Nunes, Keila Guerra Pacheco
Batistel, Nathali Ribeiro
Barbosa, Dafne
Rosa, Ivan Reis
Davila, Ivone Vanessa Jurado
Féris, Liliana Amaral
 
Description The objective of this work is to utilize a coal beneficiation tailing from Moatize (Mozambique) for the adsorption of hexavalent chromium from water in batch model and fixed bed column. Coal waste was used in particle size between 0.7 and 1.5 mm. The effects of pH, contact time and solid adsorbent concentration were analyzed by batch experiments. The results indicated that it was possible to obtain 98.6% of removal under the experimental conditions of pH 2, 10 h of process and 8 g.L-1 of solid adsorbent. From these experimental results, equilibrium isotherms were build and Langmuir and Sips models presented a better fit to the experimental data. The adsorption of chromium hexavalent from aqueous solution onto coal waste was investigated in a fixed bed column at 298 K. The effects of the inlet concentration, feed flow rate, bed depth on adsorption were investigated. In general, the evaluated parameters improved as a results increase in a Z (bed deep) and decreases in Q (feed flow rate). These performance metrics also improved as C0 (inlet concentration) was increased.
 
Publisher Universidade Federal de Campina Grande - UFCG
 
Date 2020-05-25
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier http://revistas.ufcg.edu.br/ActaBra/index.php/actabra/article/view/209
10.22571/2526-4338209
 
Source Acta Brasiliensis; Vol 4 No 2 (2020): Acta Brasiliensis; 121-127
Acta Brasiliensis; Vol 4 No 2 (2020): Acta Brasiliensis; 121-127
Acta Brasiliensis; Vol 4 No 2 (2020): Acta Brasiliensis; 121-127
2526-4338
2526-432X
 
Language eng
 
Relation http://revistas.ufcg.edu.br/ActaBra/index.php/actabra/article/view/209/98
 
Rights Copyright (c) 2019 Acta Brasiliensis
 

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