Synthesis of mesoporous Cr(OH)<sub>3</sub> and its adsorption of vanadium(Ⅴ) ion from V containing solution

LI Hualin; LUO Minting; ZHANG Hongling; SHI Yilang; ZHANG Bingzhu; CAI Zaihua; XU Hongbin; ZHANG Yi

doi:10.11949/j.issn.0438-1157.20160808

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Synthesis of mesoporous Cr(OH)₃ and its adsorption of vanadium(Ⅴ) ion from V containing solution

更新时间：2025-11-26

- Synthesis of mesoporous Cr(OH)₃ and its adsorption of vanadium(Ⅴ) ion from V containing solution
- CIESC Journal Issue 12, Pages: 5283-5290(2016)
- 作者机构：
  
  1. 河北科技大学化学与制药工程学院,河北,石家庄,050018
  2. 中国科学院过程工程研究所湿法冶金清洁生产技术国家工程实验室,北京,100190
  3. 中国科学院绿色过程与工程重点实验室,北京,100190
  4. 湖北振华化学股份有限公司,湖北,黄石,435001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160808
  CLC： P273
- Online First：05 December 2016，
  
  Published：05 December 2016
- 稿件说明：
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LI Hualin, LUO Minting, ZHANG Hongling, et al. Synthesis of mesoporous Cr(OH)₃ and its adsorption of vanadium(Ⅴ) ion from V containing solution[J]. CIESC Journal, 2016, (12): 5283-5290. DOI: 10.11949/j.issn.0438-1157.20160808.
DOI：

LI Hualin, LUO Minting, ZHANG Hongling, et al. Synthesis of mesoporous Cr(OH)₃ and its adsorption of vanadium(Ⅴ) ion from V containing solution[J]. CIESC Journal, 2016, (12): 5283-5290. DOI: 10.11949/j.issn.0438-1157.20160808. DOI：

摘要

以CrCl3·6H2O作为铬源，通过添加强碱制备出大比表面积（312.70 m2·g-1）、高孔隙率（0.48 cm3·g-1）的介孔Cr（OH）3，并研究了其对溶液中钒（V）离子的吸附性能，考察了溶液pH、吸附剂用量、吸附温度、吸附时间等条件对吸附效果的影响。结果表明，当溶液pH在2.0~9.0、钒离子浓度为100~500 mg·L-1时，采用该吸附剂均可实现溶液中钒离子的高效去除。在最优实验条件下，钒去除率接近100%，钒离子浓度可由500 mg·L-1降至0.81 mg·L-1。吸附热力学的研究结果表明，Cr（OH）3对钒离子的吸附过程遵循Langmuir等温吸附；吸附过程符合拟二级反应动力学方程，反应级数为拟二级。

Abstract

Previous study have examined many materials to remove the vanadium ions from aqueous solution

but it is difficult to meet the national discharge standard. In this paper

a mesoporous chromium hydroxide(Cr(OH)3)

which has a high specific surface area(312.70 m2·g-1) and a large pore volume(0.48 cm3·g-1)

was synthesized by adding NaOH solution into CrCl3·6H2O solution drop by drop. The mesoporous Cr(OH)3 powders were used as adsorbents to remove vanadium ions from aqueous solution

which showed high efficiency in vanadium removing at pH from 2.0~9.0 and concentration of V5+ ranging from 100 to 500 mg·L-1. Under the optimal conditions

the adsorption rate of vanadium approached to 100% and the concentration of V5+ decreased from 500 to 0.81 mg·L-1. The adsorption process belonged to the Langmuir isothermal adsorption and the coefficient was higher than 0.99. Dynamic analysis showed that the pseudo-second-order model could describe the adsorption process very well.

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Synthesis of mesoporous Cr(OH)3 and its adsorption of vanadium(Ⅴ) ion from V containing solution

DOI：10.11949/j.issn.0438-1157.20160808

摘要

Abstract

关键词

Keywords

references

Synthesis of mesoporous Cr(OH)₃ and its adsorption of vanadium(Ⅴ) ion from V containing solution