Efficient removal and recovery of uranium from industrial radioactive wastewaters using functionalized activated carbon powder derived from zirconium carbide process waste

Author(s):  
Majid Mohammad Nezhad ◽  
Abolfazl Semnani ◽  
Nahid Tavakkoli ◽  
Mahboube Shirani
2021 ◽  
Vol 60 (11) ◽  
pp. 4332-4341
Author(s):  
Hossein Shahriyari Far ◽  
Mahdi Hasanzadeh ◽  
Mina Najafi ◽  
Targol Rahimi Masale Nezhad ◽  
Mahboubeh Rabbani

2018 ◽  
Vol 107 ◽  
pp. 1792-1799 ◽  
Author(s):  
Asma Nasrullah ◽  
A.H. Bhat ◽  
Abdul Naeem ◽  
Mohamed Hasnain Isa ◽  
Mohammed Danish

2016 ◽  
Vol 227 (12) ◽  
Author(s):  
Pricila Marin ◽  
Aparecido Nivaldo Módenes ◽  
Rosângela Bergamasco ◽  
Paulo Roberto Paraíso ◽  
Safia Hamoudi

Author(s):  
Harouna Massai ◽  
Djakba Raphael ◽  
Mouhamadou Sali

The present work aimed at mitigating the level of copper ions (Cu++) by adsorption in aqueous solution using activated carbon powder (AC) and biosorbent (BS) from the Indian jujube seed hulls. The AC and BS were prepared from the Indian jujube seed hulls and characterized    using standard procedures. In addition, the adsorption effects of Indian jujube seed hulls through the AC and BS were carried out using jar test experiment (batch mode) at different pH (1, 2, 3, and 4), ionic strengths (100-600 mg/L) and stirring speed (120rpm). Therefore, it was found that the adsorption time at equilibrium were 10 and 5 minutes respectively for the AC and the BS.  Furthermore, it was found that the reduction of copper ions were 99.40% and 73.08% for aqueous solutions of 100 ppm and 500 ppm respectively at the equilibrium state. It was also revealed that when the mass of the AC or the BS increases, the quantities of ions adsorbed per gram decrease. The maximum pH of adsorption for the AC was found to be pH=1, while it was found to be pH=4 for the BS. The Freundlich model indicated that the adsorption of copper ions by the Indian jujube is linear while the Temkin and Dubinin-Kagana-Radushkevich models described the adsorption as a physical reaction. It was finally observed that the adsorption of copper ions by the AC and the BS from Indian jujube seed hulls influenced by the addition of some concentration of NaCl.


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