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It\u2019s shown that the prepared FeMgMn-LDH is a promising adsorbent for anions removal, which has high buffer capacity (final pH remained between 9 and 10) and high reversibility, and can remove nitrate ions selectively though an anion-sieve effect. The maximum amount of nitrate adsorption is 10.56\u00a0N-mg g<jats:sup>\u22121<\/jats:sup> at 25 \u2103. The removal rate of nitrate ions can reach 86.26% with the adsorbent dose of 5\u00a0g\/L in a real water. The competition order of coexisting anions on nitrate adsorption by FeMgMn-LDH is CO<jats:sub>3<\/jats:sub><jats:sup>2\u2212<\/jats:sup>\u2009&gt;\u2009PO<jats:sub>4<\/jats:sub><jats:sup>3\u2212<\/jats:sup>\u2009&gt;\u2009SO<jats:sub>4<\/jats:sub><jats:sup>2\u2212<\/jats:sup>. The negative values of \u0394G<jats:sup>0<\/jats:sup> (from \u2212 27.796 to \u2212 26.426\u00a0kJ\u00a0mol<jats:sup>\u22121<\/jats:sup>) and \u0394H<jats:sup>0<\/jats:sup> (\u2212 6.678\u00a0kJ mol<jats:sup>\u22121<\/jats:sup>) indicate that the nitrate adsorption process on the FeMgMn-LDH is spontaneous and exothermic. The main adsorption mechanisms of nitrate removal from aqueous solutions by FeMgMn-LDH are electrostatic attraction and ion exchange.<\/jats:p>","DOI":"10.1038\/s41598-020-72845-3","type":"journal-article","created":{"date-parts":[[2020,9,30]],"date-time":"2020-09-30T10:03:01Z","timestamp":1601460181000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Selective nitrate removal from aqueous solutions by a hydrotalcite-like absorbent FeMgMn-LDH"],"prefix":"10.1038","volume":"10","author":[{"given":"Hongguang","family":"Zhou","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Youlin","family":"Tan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wei","family":"Gao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yue","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yanmei","family":"Yang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2020,9,30]]},"reference":[{"key":"72845_CR1","doi-asserted-by":"publisher","first-page":"e14164","DOI":"10.5812\/jhealthscope.14164","volume":"6","author":"M Parvizishad","year":"2017","unstructured":"Parvizishad, M., Dalvand, A., Mahvi, A. 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