Static and Dynamic Adsorption of Cd2+ and Ni2+ on Chitosan/Polyvinyl alcohol/Polyethyleneimine Adsorbent

International Journal of Industrial Chemistry

دوره 12، شماره 1، خرداد 2021

نوع مقاله: research article

شناسه دیجیتال (DOI): 10.47176/IJIC.12.1.3

نویسنده

Nadia Sahebjamee^*

Department of Chemical Engineering, Quchan Branch, Islamic Azad University, Quchan, Iran

چکیده

Metals released to the environment may undergo transformations and have a great impact on water environments, public health, and the economy, which should be dealt with legally due to the serious environmental and health effects of wastewater containing heavy metals. In this paper, the aim is to investigate the removal of Cd2+ and Ni2+ from aqueous solutions by chitosan/polyvinyl alcohol/polyethyleneimine (CS/PVA/PEI) adsorbent prepared with acetone. The effect of various parameters such as pH, temperature, contact time, adsorbent amount, and initial concentration was investigated in static mode. The findings of this study show that the maximum absorption process takes place at a pH equal to 3, an initial concentration of 35 mg/l, a temperature of 25 °C with a contact time of 2 hours, and a speed of 120 rpm. The removal percentage of Cd2+ and Ni2+ by the adsorbent was also tested in dynamic mode. Although both separation methods use the same mechanism, the separation rate in dynamic mode was much faster than in static mode.

کلیدواژه‌ها

Chitosan؛ Polyethyleneimine؛ Heavy metal؛ Dynamic adsorption