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Compared to the naked particles, magnetic bio-polymer composites exhibited promoted adsorption capacity. Competitive adsorption studies in binary solutions illustrated preferable selectivity of adsorbents toward Cd(II) ions in the presence of co-existing cations. More importantly, CS\/CoFe2O4 and CS\/NiFe2O4 had a satisfactory practical application in the removal of Cd(II) from real groundwater spiked with cadmium. The exhausted adsorbents could be regenerated efficiently by 0.5 M HNO3. The results from this study support that CS\/CoFe2O4 and CS\/NiFe2O4 prove excellent adsorption behavior for the removal of Cd(II) ions from aqueous media.<\/jats:p>","DOI":"10.2166\/wst.2018.510","type":"journal-article","created":{"date-parts":[[2018,12,15]],"date-time":"2018-12-15T04:30:36Z","timestamp":1544848236000},"page":"2297-2307","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":41,"title":["Efficient removal of cadmium (II) ions from aqueous solution by CoFe2O4\/chitosan and NiFe2O4\/chitosan composites as adsorbents"],"prefix":"10.2166","volume":"78","author":[{"given":"Ashraf","family":"Homayonfard","sequence":"first","affiliation":[{"name":"Faculty of Natural Resources and Environment, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahsasadat","family":"Miralinaghi","sequence":"first","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Varamin-Pishva Branch , Islamic Azad University, Varamin, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reza Haji Seyed Mohammad","family":"Shirazi","sequence":"first","affiliation":[{"name":"Faculty of Natural Resources and Environment, Tehran Science and Research Branch, Islamic Azad University, Tehran, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Elham","family":"Moniri","sequence":"first","affiliation":[{"name":"Department of Chemistry, Faculty of Science, Varamin-Pishva Branch , Islamic Azad University, Varamin, Iran"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"945","published-online":{"date-parts":[[2018,12,14]]},"reference":[{"issue":"3","key":"2020032814310926800_WST-EM181027C1","doi-asserted-by":"crossref","first-page":"2782","DOI":"10.1016\/j.jece.2017.05.029","article-title":"Efficient techniques for the removal of toxic heavy metals from aquatic environment: a review","volume":"5","year":"2017","journal-title":"Journal of Environmental Chemical Engineering"},{"key":"2020032814310926800_WST-EM181027C2","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1016\/j.apsusc.2015.08.076","article-title":"Highly effective removal of Cu(II) by triethylenetetramine-magnetic reduced graphene oxide composite","volume":"356","year":"2015","journal-title":"Applied Surface Science"},{"issue":"2","key":"2020032814310926800_WST-EM181027C3","doi-asserted-by":"crossref","first-page":"265","DOI":"10.2136\/sssaj1980.03615995004400020013x","article-title":"Application of Elovich equation to the kinetics of phosphate release and sorption in soils","volume":"44","year":"1980","journal-title":"Soil Science Society of America Journal"},{"key":"2020032814310926800_WST-EM181027C4","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1016\/j.cis.2013.12.005","article-title":"Recent advances in the use of graphene-family nanoadsorbents for removal of toxic pollutants from wastewater","volume":"204","year":"2014","journal-title":"Advances in Colloid and Interface Science"},{"issue":"11","key":"2020032814310926800_WST-EM181027C5","doi-asserted-by":"crossref","first-page":"2959","DOI":"10.2166\/wst.2017.354","article-title":"Improving the selectivity of magnetic graphene oxide through amino modification","volume":"76","year":"2017","journal-title":"Water Science and Technology"},{"issue":"14","key":"2020032814310926800_WST-EM181027C6","doi-asserted-by":"crossref","first-page":"5137","DOI":"10.1016\/j.biortech.2010.02.004","article-title":"Equilibrium, kinetic and thermodynamic studies of Acid Orange 52 dye biosorption by Paulownia tomentosa Steud. leaf powder as a low-cost natural biosorbent","volume":"101","year":"2010","journal-title":"Bioresource Technology"},{"key":"2020032814310926800_WST-EM181027C7","first-page":"331","article-title":"The equation of the characteristic curve of the activated charcoal","volume":"55","year":"1947","journal-title":"Proc. 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