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Determination of Anion-Exchange Resin Performance Based on Facile Chloride-Ion Monitoring by FIA-Spectrophotometry with Applications to Water Treatment Operation

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Abstract

Based on a flow-injection spectrophotometry, an automatic analytical method for determination of ppb-level chloride-ion has been established. By use of this method, a novel FIA method for the determination of SBAER performance has also been developed. In this paper, the effects of concentration, dosage, and flow rate of the regenerant on BEC of SBAER were first investigated dynamically by the FIA method. In addition, the flow rate of the sample water and the temperature of the ion exchange resin were also examined. The optimum conditions were obtained: the volume of the regenerant (sodium hydroxide) was 50 mL (0.15 g resin), and its concentration was 3% (w/v); the volumetric flow rates of the regenerant and the sample water were 0.5 ml/min (4.3 m/h) and 1.5 ml/min (13 m/h), respectively. The exchanging temperature was 25 ± 5°C. The method is characterized by the use of a micro resin-column, shorter testing cycle, easy operation, and high reproducibility. The proposed method is approximately 30 times more efficient than the manual method, and it can be used for the exchange performance comparison of various SBAER.

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Authors and Affiliations

  1. School of Chemical Engineering of Sichuan University, No. 24 Southern Section 1, 1st Ringroad, Chengdu City, Sichuan Province, 610065, China

    Yong-Sheng Li

  2. Peninsula Water Treatment Ltd., No. 381 Central Plaza, Huaihai Zhong-road, Shanghai, 20020, China

    Yi-Ling Dong

Authors
  1. Yong-Sheng Li
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  2. Yi-Ling Dong
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Correspondence to Yong-Sheng Li.

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Li, YS., Dong, YL. Determination of Anion-Exchange Resin Performance Based on Facile Chloride-Ion Monitoring by FIA-Spectrophotometry with Applications to Water Treatment Operation. ANAL. SCI. 20, 831–836 (2004). https://doi.org/10.2116/analsci.20.831

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  • DOI: https://doi.org/10.2116/analsci.20.831

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