Comparative study on the adsorption of lead ions by kaolin loaded chitosan by different modification methods

• Autorzy: Zhang Shuqin , Boyue Yuan , Liu Yi , Zhang Kening , Ren Dajun , Zhang Xiaoqing

Identyfikatory

DOI

10.37190/epe240102

• Języki publikacji: EN

Abstrakty

EN

The adsorption effect of two modified kaolin-chitosan composites prepared by different modification methods (cross-linking method (GL-CS) and click reaction method (TGL-CS) on lead ion wastewater was studied. The structure of TGL-CS has a denser pore structure than that of GL-CS, and the distribution of adsorption sites is more uniform. At 25 °C, pH 4, the adsorbent dosage of 0.05 g/dm³, reaction time of 4 h, and initial mass concentration of 150 mg/dm³, TGL-CS had the best effect on Pb²⁺ wastewater treatment, and the adsorption capacity was 76.159 mg/g. The adsorption studies of kinetic, thermodynamic, and thermodynamic parameters showed that the adsorption on GL-CS and TGL-CS was best described by the Langmuir model. The adsorption mechanism is mainly chemical adsorption. The adsorption process is spontaneous. These results show that the adsorbent prepared by click reaction has obvious advantages, with more adsorption capacity and adsorption sites, faster adsorption rate, and better application potential.

Słowa kluczowe

EN

adsorption; chitosan; kaolin; wastewater treatment; lead ions

PL

adsorpcja; chitozan; kaolin; oczyszczanie ścieków; jony ołowiu

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2024
• Tom: Vol. 50, nr 1
• Strony: 27--41
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Zhang Shuqin

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China
• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, China

• https://orcid.org/0000-0002-1572-308x

autor

Boyue Yuan

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China

• https://orcid.org/0000-0002-1038-1471

autor

Liu Yi

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China

• https://orcid.org/0009-0001-5358-3110

autor

Zhang Kening

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China

• https://orcid.org/0009-0002-5230-1457

autor

Ren Dajun

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China
• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, China

• https://orcid.org/0000-0003-0752-4184

autor

Zhang Xiaoqing

• College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, China
• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, China

• https://orcid.org/0000-0002-6456-0600

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