Preparation of various sorbents from agro waste to remove some radionuclides and organic species from aqueous solutions

Abstract

Delonix regia pods have been used to produce high-efficiency and low-cost activated carbons using different activation methods. The ability of these prepared sorbents to remove cations [ 137 Cs, 85 Sr, La(III), Eu(III), Co(II), U(VI)] and anions [ 75 Se, Cr(VI), Mo(VI)] was evaluated in mono-component systems and the sorbents number 11, 13, 25, and 35 showed high removal efficiency. These sorbents also show the high ability to remove organic pollutants such as methylene blue and phenol. This study highlighted the extensive applicability of these low-cost sorbents in the sequestration of anionic and cationic radionuclides from real radioactive wastewaters and different environmental samples.

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

“…Activated carbon adsorbent has been applied for the adsorption of different radionuclides such as cobalt-60 (Hamed et al 2016), europium (Hamed et al 2016;Moloukhia et al 2016), cesium (Khandaker et al 2021;Moloukhia et al 2016), radon (Karunakara et al 2015), thoron (Karunakara et al 2015), uranium (El-Magied et al 2021;Nezhad et al 2021), radioactive iodine (Chien et al 2011;Li et al 2014), selenium (Elgazzar et al 2020), molybdenum (Elgazzar et al 2020), strontium (Elgazzar et al 2020;Moloukhia et al 2016), lanthanum (Elgazzar et al 2020), and technetium-99 (Li et al 2014). All the studies highlight the importance of oxygen-based functional groups and activated carbon π-electrons.…”