Stellerite-seeded facile synthesis of zeolite X with excellent aqueous Cd<sup>2+</sup> and Ni<sup>2+</sup> adsorption performance

Yinchang Pei; Shengpeng Mo; Qinglin Xie; Nanchun Chen; Zhongxin Yang; Lili Huang; Lili Ma

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Stellerite-seeded facile synthesis of zeolite X with excellent aqueous Cd²⁺ and Ni²⁺ adsorption performance

Full Length Article | Updated：2026-01-06

- Stellerite-seeded facile synthesis of zeolite X with excellent aqueous Cd²⁺ and Ni²⁺ adsorption performance
- Chinese Journal of Chemical Engineering Vol. 51, Issue 11, Pages: 61-74(2022)
- Affiliations：
  
  1. College of Environmental Science and Engineering, Guilin University of Technology,Guilin,China,541006
  2. Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology,Guilin,China,541006
  3. College of Material Science and Engineering, Guilin University of Technology,Guilin,China,541006
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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and Ni
DOI：

and Ni DOI：

摘要

Abstract

Zeolite X was synthesized by a two-step hydrothermal method using natural stellerite zeolite as the silicon seed

and its adsorption performance for Cd

and Ni

ions was experimentally and comprehensively investigated. The effects of pH

zeolite X dosage

contact time

and temperature on adsorption performance for Cd

and Ni

ions over were studied. The adsorption process was endothermic and spontaneous

and followed the pseudo-second-order kinetic and the Langmuir isotherm models. The maximum adsorption capacitiesfor Cd

and Ni

ions at 298 K were 173.553 and 75.897 mg·g

-1

respectively. Ion exchange and precipitation were the principal mechanisms for the removal of Cd

ions from aqueous solutions by zeolite X

followed by electrostatic adsorption. Ion exchange was the principal mechanisms for the removal of Ni

ions from aqueous solutions by zeolite X

followed by electrostatic adsorption and precipitation. The zeolite X converted from stellerite zeolite has a low

(Si/Al)

abundant hydroxyl groups

and high crystallinity and purity

imparting a good adsorption performance fo

r Cd

and Ni

ions. This study suggests that zeolite X converted from stellerite zeolite could be a useful environmentally-friendly and effective tool for the removal of Cd

and Ni

ions from aqueous solutions.

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⁰

Stellerite-seeded facile synthesis of zeolite X with excellent aqueous Cd2+ and Ni2+ adsorption performance

DOI：

摘要

Abstract

关键词

Keywords

references

Stellerite-seeded facile synthesis of zeolite X with excellent aqueous Cd²⁺ and Ni²⁺ adsorption performance