The dynamic uptake of lead and its radionuclides by natural and synthetic aluminium-phosphate-sulfates

Owen, Nicholas D.; Cook, Nigel J.; Ram, Rahul; Etschmann, Barbara; Ehrig, Kathy; Schmandt, Danielle S.; Rollog, Mark; Guagliardo, Paul

doi:10.1016/j.mineng.2020.106659

Cited by 9 publications

(1 citation statement)

References 55 publications

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“…Lead has several radioisotopes as 210 Pb with a half-life of 22.3 years; it emits both α particles and γ radiation (Weng et al 2020). Originally, 210 Pb is produced by the decay chain of the naturally occurring 238 U (Owen et al 2021). Lead-210 is diffused in air, water, and soil and its accumulation may lead to carcinogenic dangers to people and unfriendly environmental impacts (Bonczyk, 2013).…”

Section: Introductionmentioning

confidence: 99%

Ni-alginate hydrogel beads for establishing breakthrough curves of lead ions removal from aqueous solutions

Sami

Elsayed

Ali

et al. 2022

Environ Sci Pollut Res

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The scientific impact of this work is the protection of the environment from hazardous pollutants using a column technique. Besides its higher stability at working pH and its time persisting, Ni-alginate has a higher ability to remove lead ions compared to the other prepared beads (Sr-alginate, Co-alginate, and Ca-alginate). Also, Ni-alginate possessed a higher removal percent, 93.3%, toward Pb2+ than the other ions, taking the sorption order of Pb2+ > Sr2+ > Co2+ > Cd2+ > Zn2+. Therefore, this study focused on using Ni-alginate as a selective sorbent for lead ions. Fixed-bed column was employed for the sorption process. The results for that efficiency are presented as breakthrough curves in view of the impact of various parameters; influent flow rate (1.5, 3.0, and 5.0 mL/min), lead concentration (100, 150, and 200 mg/L), and bed depth of sorbent (3.0, 5.0, and 7.0 cm). Breakthrough modeling including Thomas and Yan models was employed. The outcomes indicated that Thomas theory is more applicable. The overall outcomes indicated that Ni-alginate is recommended for selective removal of Pb2+ from waste solutions.

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Section: Introductionmentioning

confidence: 99%