Studies on batch adsorptive removal of cadmium and nickel from synthetic waste water using silty clay originated from Balochistan- Pakistan

Abdul Samad; Muhammad Imran Din; Mahmood Ahmed

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Studies on batch adsorptive removal of cadmium and nickel from synthetic waste water using silty clay originated from Balochistan- Pakistan

Materials and Product Engineering | Updated：2026-01-06

- Studies on batch adsorptive removal of cadmium and nickel from synthetic waste water using silty clay originated from Balochistan- Pakistan
- Chinese Journal of Chemical Engineering Vol. 28, Issue 4, Pages: 1171-1176(2020)
- Affiliations：
  
  1. Institute of Chemistry, University of the Punjab,Lahore,Pakistan,54590
  2. Renacon Pharma Limited,Lahore,Pakistan,54600
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2020
- Accepted：
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Abdul Samad, Muhammad Imran Din, Mahmood Ahmed. Studies on batch adsorptive removal of cadmium and nickel from synthetic waste water using silty clay originated from Balochistan- Pakistan[J]. Chinese Journal of Chemical Engineering, 2020, 28(4): 1171-1176.
DOI：

Abdul Samad, Muhammad Imran Din, Mahmood Ahmed. Studies on batch adsorptive removal of cadmium and nickel from synthetic waste water using silty clay originated from Balochistan- Pakistan[J]. Chinese Journal of Chemical Engineering, 2020, 28(4): 1171-1176. DOI：

摘要

Abstract

The potentials of silty clay (SC)

acquired from Chaman

Balochistan

were investigated as adsorbent for Ni (Ⅱ) and Cd (Ⅱ) removal from contaminated media. The influence of different operating factors like dose

temperature

and time of contact was explored

and optimum values were noted under batch adsorption method. Isothermal study was conducted with varying concentrations of solutions on optimized conditions and different adsorption models

i.e

Langmuir

Freundlich

Temkin and Dubinin-Radushkevich (D-R) isotherm

which were employed to interpret the process. The isothermal data of both Ni (Ⅱ) and Cd (Ⅱ) were well fitted to Langmuir isotherm suggesting the formation of monolayer of metal ions on silty clay. The values of adsorption capacity noted for Ni (Ⅱ) and Cd (Ⅱ) were 3.603 mg·g

-1

and 5.480 mg·g

-1

respectively. Kinetic studies affirmed that pseudo second order (PSO) kinetics was being obeyed by the removal of Ni (Ⅱ) and Cd (Ⅱ). Thermodynamic variables like free energy change (Δ

°)

enthalpy change (Δ

°) and entropy change (Δ

°) were calculated. The negative value of Δ

° and the posi

tive values of Δ

° and Δ

° unfolded that the removal process of both metal ions of by SC was spontaneous

endothermic and feasible.

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