Affiliation:
1. Tananaev Institute of Chemistry—Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences” (ICT KSC RAS), 184209 Apatity, Russia
Abstract
Individual titanium and calcium–magnesium phosphates are widely known as effective sorbents. The sorption processes on these phosphates are based on different mechanisms. The sorption efficiency towards different cations depends on the phase composition of the sorbent. Composite materials with various ratio Ti:(Ca+Mg) have been synthesized. The sorption properties of samples obtained towards Cs+, Sr2+, Co2+, Cd2+, Zn2+, Cu2+, and Pb2+ have been studied to establish the effect of sorbent composition on metal removal. The adsorption isotherms have been analyzed using the Langmuir, Freundlich, and Redlich–Peterson models. The composition of sorbents has no effect on the level of removal of readily hydrolyzable Pb2+ and Cu2+ cations. Removal of lead occurs preferentially via the precipitation of metal phosphates and hydroxides. Copper precipitates as hydroxide in case of a high share of Ca-Mg phosphates in the composite sorbent. The removal of cesium proceeds according to the ion exchange mechanism only. For Cd2+, Co2+, Sr2+, and Zn2+ cations, the sorption efficiency on the composite materials synthesized is found to increase with the increase in titanium phosphate’s share in the sample. All composite sorbents synthesized demonstrated a considerable increase in the level of purification of solutions studied compared with individual Ti and Ca-Mg phosphates due to the synergism of the components.
Funder
Russian Science Foundation
Subject
Inorganic Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Computer Science Applications,Spectroscopy,Molecular Biology,General Medicine,Catalysis
Reference37 articles.
1. Assessing Toxicity of Copper, Cadmium and Chromium Levels Relevant to Discharge Limits of Industrial Effluents into Inland Surface Waters Using Common Onion, Allium cepa Bioassay;Hemachandra;Bull. Environ. Contam. Toxicol.,2015
2. Hussain, A., Aslam, S., Javid, A., Rashid, M., Hussain, I., and Qazi, J.I. (2019). Emerging and Eco-Friendly Approaches for Waste Management, Springer.
3. Chandra, R. (2015). Advances in Biodegradation and Bioremediation of Industrial Waste, CRC Press.
4. Utilization of rice husk and waste aluminum cans for the synthesis of some nanosized zeolite, zeolite/zeolite, and geopolymer/zeolite products for the efficient removal of Co(II), Cu(II), and Zn(II) ions from aqueous media;Abdelrahman;J. Hazard. Mater.,2021
5. Calcium-deficient Hydroxyapatite as a Potential Sorbent for Strontium;Sekine;Sci. Rep.,2017
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