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Correlation Analysis of Key Operational Parameters Affecting the Adsorption Performance of Bio-Based and Chitosan-Based Adsorbents for Copper Ion Adsorption
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Correlation Analysis of Key Operational Parameters Affecting the Adsorption Performance of Bio-Based and Chitosan-Based Adsorbents for Copper Ion Adsorption

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Abstract:

This work examines the impact of critical operational parameters pH, temperature, initial copper concentration, adsorption duration, and adsorbent dosage on the efficacy of five bio-based adsorbents: pineapple pulp, tissue pulp, chitosan, chitosan-coated pulp, and chitosan-coated pineapple peel. for the removal of cupric ions from aqueous solutions. The results indicated that both pH and temperature significantly enhanced copper removal efficiency (Re) and adsorption capacity (qe) for all materials tested. Conversely, higher initial copper concentrations led to a decrease in Re but an increase in qe, indicating greater metal loading per unit mass of adsorbent. Adsorption time had minimal influence on performance, while increased adsorbent dosage significantly improved Re only for chitosan-coated pulp and caused a general decline in qe due to reduced surface utilization. Pearson correlation analysis supported these findings, revealing significant positive correlations of pH and temperature with both performance indicators and a dual effect of feed concentration. Dosage and contact time showed weak, statistically non-significant correlations. This analysis identifies pH, temperature, and initial metal content as the principal parameters affecting biosorption efficacy and provides essential recommendations for optimizing conditions in the treatment of copper-contaminated wastewater.

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Periodical:

Key Engineering Materials (Volume 1045)

Pages:

11-18

DOI:

https://doi.org/10.4028/p-QXl2iy

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Online since:

March 2026

Authors:

Panida Charnkeitkong*, Rong Phoophuangpairoj

Keywords:

Adsorption, Chitosan-Coated Pineapple, Chitosan-Coated Pulp, Cupric Ion, Pearson Correlation

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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