{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T11:41:14Z","timestamp":1789731674586,"version":"4.0.1"},"reference-count":67,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2022,3,18]],"date-time":"2022-03-18T00:00:00Z","timestamp":1647561600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>The synthesis and developments of magnetic chitosan nanoparticles for high efficiency removal of the cadmium ions from aquatic medium are one of the most challenging techniques. Highly adsorptive composite (MCH-ATA) was produced by the reaction of chitosan with formaldehyde and amino thiazole derivative. The sorbent was characterized by FTIR, elemental analyses (EA), SEM-EDX, TEM analysis, TGA and titration (volumetric). The modified material includes high nitrogen and sulfur contents (i.e., 4.64 and 1.35 mmol g\u22121, respectively), compared to the pristine material (3.5 and 0 mmol g\u22121, respectively). The sorption was investigated for the removal of Cd(II) ions from synthetic (prepared) solution before being tested towards naturally contaminated groundwater in an industrial area. The functionalized sorbent shows a high loading capacity (1.78 mmol Cd g\u22121; 200 mg Cd g\u22121) compared to the pristine material (0.61 mmol Cd g\u22121; 68.57 mg Cd g\u22121), while removal of about 98% of Cd with capacity (6.4 mg Cd g\u22121) from polymetallic contaminated groundwater. The sorbent displays fast sorption kinetics compared to the non-modified composite (MCH); 30 min is sufficient for complete sorption for MCH-ATA, while 60\u201390 min for the MCH. PFORE fits sorption kinetics for both sorbents, whereas the Langmuir equation fits for MCH and Langmuir and Sips for MCH-ATA for sorption isotherms. The TEM analysis confirms the nano scale size, which limits the diffusion to intraparticle sorption properties. The 0.2 M HCl solution is a successful desorbing agent for the metal ions. The sorbent was applied for the removal of cadmium ions from the contaminated underground water and appears to be a promising process for metal decontamination and water treatment.<\/jats:p>","DOI":"10.3390\/polym14061240","type":"journal-article","created":{"date-parts":[[2022,3,20]],"date-time":"2022-03-20T21:34:27Z","timestamp":1647812067000},"page":"1240","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":30,"title":["Grafting of Thiazole Derivative on Chitosan Magnetite Nanoparticles for Cadmium Removal\u2014Application for Groundwater Treatment"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8935-6884","authenticated-orcid":false,"given":"Mohammed F.","family":"Hamza","sequence":"first","affiliation":[{"name":"School of Nuclear Science and Technology, University of South China, Hengyang 421001, China"},{"name":"Semi Pilot Plant Department, Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo 11728, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adel A.-H.","family":"Abdel-Rahman","sequence":"additional","affiliation":[{"name":"Chemistry Department, Faculty of Science, Menofia University, Shebin El-Kom 32511, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alyaa S.","family":"Negm","sequence":"additional","affiliation":[{"name":"Chemistry Department, Faculty of Science, Menofia University, Shebin El-Kom 32511, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Doaa M.","family":"Hamad","sequence":"additional","affiliation":[{"name":"Chemistry Department, Faculty of Science, Menofia University, Shebin El-Kom 32511, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahmoud S.","family":"Khalafalla","sequence":"additional","affiliation":[{"name":"Semi Pilot Plant Department, Nuclear Materials Authority, P.O. Box 530, El-Maadi, Cairo 11728, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3840-7837","authenticated-orcid":false,"given":"Amr","family":"Fouda","sequence":"additional","affiliation":[{"name":"Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Nasr City, Cairo 11884, Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3821-9078","authenticated-orcid":false,"given":"Yuezhou","family":"Wei","sequence":"additional","affiliation":[{"name":"School of Nuclear Science and Technology, University of South China, Hengyang 421001, China"},{"name":"School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hamada H.","family":"Amer","sequence":"additional","affiliation":[{"name":"Department of Chemistry, Turabah University College, Taif University, P.O. 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