Background: In this research, the adsorption efficiency of Cellulose (as a raw compound prepared from trash papers) and Cellulose Nanopolystyrene (CNP) as adsorbents for waste water treatment was investigated. Lead and cadmium ions as the pollutants added to aqueous solutions and a synthetic effluent solution was prepared. Methods: The effective factors influencing the adsorption process including the pH of aqueous phase and its ionic strength, the adsorbent dose, the duration of adsorbent, and time dependency have been assessed.  The removal efficiency was assessed by determination of studied metal ions using a flame atomic absorption spectrometer before and after removal procedure. Results: It was found that ۰.۱g of Cellulose as adsorbent removed ۹۶.۸۱%‚ ۵۰.۰۶% of Pb۲+and Cd۲+ from ۴۵ mL of synthetic effluent solution at pH =۵ after ۳۰ min at ۲۷°C, respectively.  Moreover, ۰.۱g of the CNP removed ۹۶.۸۸%‚ ۶۰.۴۱% of Pb۲+and Cd۲+ from similar above-mentioned conditions. The CNP showed better adsorbent characteristics in the adsorption of Pb۲+ and Cd۲+ ions than the Cellulose. The Langmuir and Freundlich isotherm models successfully demonstrated the experimental observations for removing Pb۲+ and Cd۲+ ions by CNP as the adsorbent. The Dubinin-Radushkevich   D-R) and Temkin isotherm models were better adapted than other used models for the adsorption procedure. Conclusion: This research confirms the efficiency of treated Cellulose and Cellulose Nano-polystyrene (CNP) adsorbents from trash papers for eliminating Pb۲+ and Cd۲+ ions from synthetic effluent solution.

کلیدواژه ها:

Water treatment ، Adsorbent ، Poly styrene ، Isotherm ، Cheap adsorbents