Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation

徐程浩; 汪芳; 刘代俊; 陈伟

doi:10.1016/S1004-9541(09)60126-9

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Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation

Updated：2026-01-06

- Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation
- Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation
- 中国化学工程学报（英文版） 2010年18卷第5期页码：761-766
- Affiliations：
  
  1. School of Chemical Engineering, Sichuan University,Chengdu,China,610065
  2. Department of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu,China,610500
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(09)60126-9
  中图分类号：
- 纸质出版：2010
- Accepted：
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徐程浩, 汪芳, 刘代俊, 等. Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation[J]. 中国化学工程学报（英文版）, 2010,18(5):761-766.

XU Chenghao, WANG Fang, LIU Daijun, CHEN Wei. Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation[J]. , 2010, 18(5): 761-766.
徐程浩, 汪芳, 刘代俊, 等. Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation[J]. 中国化学工程学报（英文版）, 2010,18(5):761-766. DOI： 10.1016/S1004-9541(09)60126-9.

XU Chenghao, WANG Fang, LIU Daijun, CHEN Wei. Effect of Additive EDTA on Crystallization Process of Magnesium Hydroxide Precipitation[J]. , 2010, 18(5): 761-766. DOI： 10.1016/S1004-9541(09)60126-9.

摘要

Abstract

The effects of additive ethylenediaminetetraacetic acid (EDTA) on crystallization process were investigated by the induction time of MgSO

-NaOH system. Nucleation and growth rates

growth mechanism and particle size distribution of magnesium hydroxide precipitation were involved with. The induction time in unseeded and seeded precipitation of magnesium hydroxide with and without additive EDTA was measured. The conductivity method was used to determine the induction period. Theoretical relations of the induction time and supersaturation ratio for different growth mechanisms and a combined analysis on the induction time were applied to determine nucleation and growth rates. The growth mechanism of magnesium hydroxide precipitation was disclosed by analyzing the experimental data with and without additive. The analysis on induction time indicated that additive EDTA had a significant influence on both nucleation and growth of magnesium hydroxide precipitation. The mechanism underlying the effect of EDTA on crystal growth was 2-dimension nucleation-mediated growth model.

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