{"corpus_id":58640980,"paper_sha":"5967dee0ba36f3ce728e7deec74b058bb59335cd","doi":"10.1016/j.ijbiomac.2019.01.058","arxiv_id":null,"pmid":30660568,"pmcid":null,"mag_id":2909267725,"dblp_id":null,"acl_id":null,"title":"Superadsorbent hydrogel based on lignin and montmorillonite for Cu(II) ions removal from aqueous solution.","year":2019,"publication_date":"2019-04-15","venue":"International Journal of Biological Macromolecules","journal":{"name":"International journal of biological macromolecules","pages":"\n          511-519\n        ","volume":"127"},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article"],"s2_fields_of_study":["Medicine","Materials Science","Chemistry","Environmental Science"],"reference_count":47,"citation_count":95,"influential_citation_count":5,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":[{"d":"Adsorption","mj":false,"ui":"D000327"},{"d":"Bentonite","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"}],"ui":"D001546"},{"d":"Copper","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"}],"ui":"D003300"},{"d":"Lignin","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"}],"ui":"D008031"},{"d":"Water","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"}],"ui":"D014867"},{"d":"Water Pollutants, Chemical","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"}],"ui":"D014874"},{"d":"Water Purification","mj":true,"ui":"D018508"}],"chemicals":[{"n":"Water Pollutants, Chemical","ui":"D014874","reg":"0"},{"n":"Water","ui":"D014867","reg":"059QF0KO0R"},{"n":"Bentonite","ui":"D001546","reg":"1302-78-9"},{"n":"Copper","ui":"D003300","reg":"789U1901C5"},{"n":"Lignin","ui":"D008031","reg":"9005-53-2"}],"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"Superadsorbent hydrogel was prepared from lignin and montmorillonite for Cu(II) ions removal, and the chemical structure and morphology of the hydrogel were characterized by FT-IR, XRD, SEM and XPS. The swelling kinetics of the prepared hydrogel was investigated, and the result showed that the swelling process fit the Schott second-order dynamic equation. The influences of pH, contact time, Na+ concentration, and initial Cu(II) ion concentration on adsorption were studied, and the maximum adsorption value was 1.17 mmol/g, and the adsorption was rapid during the initial 5 h period, and copper ions adsorption on the superadsorbent hydrogel is a favorable process. The results also indicated that the adsorption kinetics was in accordance with the pseudo-second-order kinetic model and the adsorption isotherm conformed to the Freundlich model. FT-IR and XPS analysis revealed that the adsorption behavior was mainly due to ion exchange. The desorption ratios of copper ions from the superadsorbent were >0.8, and the regeneration efficiency was >80% after five cycles reuse, and the results show the excellent desorption performance and reusability of the prepared hydrogel.","claims":[{"public_id":"cl_b28e89e8d8cd6a5d43648681e2b34b39","status":"active","text":"FT-IR and XPS analysis revealed that the adsorption behavior is mainly due to ion exchange.","confidence":0.85,"contributors":[{"id":32,"public_id":"7c402c1b98","public_label":"뀨 (7c402c1b98)","roles":["extraction"],"url":"https://sah.borca.ai/u/7c402c1b98"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_b28e89e8d8cd6a5d43648681e2b34b39"},{"public_id":"cl_ce5317764eb405b2aa3b39f34edea4de","status":"active","text":"The adsorption kinetics of Cu(II) ions on the hydrogel follows the pseudo-second-order kinetic model, and the adsorption isotherm 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