Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling

Dongmei Liu; Huan Tang; Ying Zhao; Fuyi Cui; Jing Lu

doi:10.1016/j.cjche.2016.05.042

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Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling
- Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling
- 中国化学工程学报（英文版） 2016年24卷第9期页码：1270-1274
- Affiliations：
  
  1. State Key Laboratory of UrbanWater Resource and Environment, Harbin Institute of Technology,Harbin,China,150090
  2. School of Municipal and Environmental Engineering, Harbin Institute of Technology,Harbin,China,150090
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.05.042
  中图分类号： 10.1016/j.cjche.2016.05.042
- 纸质出版：2016
- Accepted：
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Dongmei Liu, Huan Tang, Ying Zhao, 等. Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling[J]. 中国化学工程学报（英文版）, 2016,24(9):1270-1274.

Dongmei Liu, Huan Tang, Ying Zhao, Fuyi Cui, Jing Lu. Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling[J]. , 2016, 24(9): 1270-1274.
Dongmei Liu, Huan Tang, Ying Zhao, 等. Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling[J]. 中国化学工程学报（英文版）, 2016,24(9):1270-1274. DOI： 10.1016/j.cjche.2016.05.042.

Dongmei Liu, Huan Tang, Ying Zhao, Fuyi Cui, Jing Lu. Characterization of the adsorption behavior of aqueous cadmium on nanozero-valent iron based on orthogonal experiment and surface complexation modeling[J]. , 2016, 24(9): 1270-1274. DOI： 10.1016/j.cjche.2016.05.042.

摘要

中图分类号:

Abstract

Polyvinylpyrrolidone K-30 (PVP) was introduced into the preparation of nanozero-valent iron (nZVI) and the traditional liquid-phase reduction was improved. The introduction of PVP simplified the traditional method. The nZVI prepared with this new approach showed excellent surface characters and high performance on the removal of cadmium. TEM results showed that the aggregates of nZVI can reach to several micrometers in length but less than 100 nm in diameter. The iron particles that were enclosed by a layer of oxide film that is less than 10 nm

demonstrated that the nZVI possesses a core-shell structure. BET results indicate that the specific surface area of the nZVI was 20.3159m

-1

. A three factor and three level orthogonal experiment was employed to find out the dominant factor that affects the removal rate of cadmium by nZVI. Based on the range values

the prominence order of each factor was:initial pH of the solution N initial concentration of cadmium N dosage of nZVI

the range was 96.453

3.294 and 1.747

respectively. A simulation was performed under the same condition and a same conclusion was derived

this consistence confirmed the validity of the conclusion that pH is the most significant factor that affects the adsorption efficiency.

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