自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 5    May 2019

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Fixed-bed column study for deep removal of copper (II) from simulated cobalt electrolyte using polystyrene-supported 2-aminomethylpyridine chelating resin
WANG Yu-hua(王玉华)1, 2, HU Hui-ping(胡慧萍)1, QIU Xue-jing(邱雪景)1, 2

1. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;
2. Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University,
Changsha 410083, China

Abstract:This study presents the deep removal of copper (II) from the simulated cobalt electrolyte using fabricated polystyrene-supported 2-aminomethylpyridine chelating resin (PS-AMP) in a fixed-bed. The effects of bed height (7.0–14.0 cm), feed flow rate (4.5–9.0 mL/min), initial copper (II) concentration of the feed (250–1000 mg/L), feed temperature (25–40 °C) and the value of pH (2.0–4.0) on the adsorption process of the PS-AMP resin were investigated. The experimental data showed that the PS-AMP resin can deeply eliminate copper (II) from the simulated cobalt electrolyte. The bed height, feed flow rate, initial copper (II) concentration of the feed, feed temperature and feed pH value which corresponded to the highest removal of copper (II) were 7.0 cm with 35 mm of the column diameter,4.5 mL/min, 40 °C, 1000 mg/L and 4.0, respectively. The breakthrough capacity, the saturated capacity of the column and the mass ratio of Cu/Co (g/g) in the saturated resin were correspondingly 16.51 mg/g dry resin, 61.72 mg/g dry resin and 37.67 under the optimal experimental conditions. The copper (II) breakthrough curves were fitted by the empirical models of Thomas, Yoon-Nelson and Adam-Bohart, respectively. The Thomas model was found to be the most suitable one for predicting how the concentration of copper (II) in the effluent changes with the adsorption time.

 

Key words: deep removal of copper (II); chelating resin; simulated cobalt electrolyte; fixed-bed column; model fitting

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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