{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T06:05:36Z","timestamp":1769753136021,"version":"3.49.0"},"reference-count":80,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2024,5,27]],"date-time":"2024-05-27T00:00:00Z","timestamp":1716768000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Microscopy Res &amp; Technique"],"published-print":{"date-parts":[[2024,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:label\/><jats:p>The preparation of ethylenediaminetetraacetic acid (EDTA) functionalized pine needles biochar (EDTA@BC) as a low\u2010cost active adsorbent and its effectiveness in removing Ni(II) from aqueous solution at various conditions is reported in this paper. First, alkali activation was selected to render the pine needle biochar with an excellent porous structure and increased concentration of hydroxyl groups to facilitate grafting. Subsequently, a simple method was utilized to graft EDTA onto the biochar. The prepared EDTA@BC was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive x\u2010ray spectrometry (EDX). Batch adsorption studies were conducted to assess the impact of various parameters such as solution pH, adsorbent dosage, adsorbate volume, and shaking time on the removal efficiency of Ni(II). At pH\u20096, 100\u2009mg dosage, 4\u2009mL of adsorbate volume, and 10\u2009min of shaking time, the maximum removal efficiency of Ni(II) was observed to be 89%. EDTA@BC showed reasonable sorption performance still after the third cycle of regeneration. The effect of interfering ions such as Pb, Cr, Cu, and Hg was evaluated, resulting a decrease of 69%, 78%, 76%, and 68%, respectively, in its sorption capacity. The Langmuir model provided a better fit for Ni(II) in the concentration range of 0.1\u20132000\u2009ppm under optimized conditions, with <jats:italic>q<\/jats:italic><jats:sub>max<\/jats:sub> of 46.69\u2009\u00b1\u20091.031\u2009mg\/g and <jats:italic>K<\/jats:italic><jats:sub>L<\/jats:sub> of 0.001, compared with the Freundlich isotherm, which yielded <jats:italic>n<\/jats:italic>\u2009=\u20090.234 and <jats:italic>\u03c7<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20092.7899, Temkin isotherm (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.9520), and Redlich\u2010Peterson isotherm (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.9725). The removal of Ni(II) by EDTA@BC was found to be the pseudo\u2010second\u2010order kinetics. Thermodynamic studies indicated adsorption process to be endothermic and nonspontaneous. Hence, a sustainable valorized bio\u2010material (EDTA@BC) is prepared having better sorption efficiency of Ni(II) from aqueous solution with possible wide applicability.<\/jats:p><\/jats:sec><jats:sec><jats:title>Research Highlights<\/jats:title><jats:p><jats:list list-type=\"bullet\">\n<jats:list-item><jats:p>New EDTA functionalized indigenous pine needles biochar (EDTA@BC) was prepared.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>This low\u2010cost active adsorbent found effective in removing Ni(II) from aqueous solution.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>FTIR, SEM, and EDX proved synthesis and uptake of Ni(II) from aqueous solution.<\/jats:p><\/jats:list-item>\n<jats:list-item><jats:p>Ni(II) removal, regeneration, interfering and adsorption studies were performed by UV\u2013Vis spectroscopy.<\/jats:p><\/jats:list-item>\n<\/jats:list><\/jats:p><\/jats:sec>","DOI":"10.1002\/jemt.24616","type":"journal-article","created":{"date-parts":[[2024,5,27]],"date-time":"2024-05-27T03:10:21Z","timestamp":1716779421000},"page":"2355-2370","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["<scp>EDTA<\/scp> functionalized pine needle biochar (<scp>EDTA<\/scp>@<scp>BC<\/scp>); a valorized bio\u2010material for removal of Ni(<scp>II<\/scp>) from aqueous solution"],"prefix":"10.1002","volume":"87","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0537-7718","authenticated-orcid":false,"given":"Aamir","family":"Rasheed","sequence":"first","affiliation":[{"name":"Faculty of Basic and Applied Sciences, Chemistry Department University of Kotli  Kotli Azad Jammu and Kashmir Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Faiza","family":"Rasheed","sequence":"additional","affiliation":[{"name":"Department of Biotechnology, Faculty of Biological Sciences Quaid\u2010i\u2010Azam University  Islamabad Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Waqas Khan","family":"Kayani","sequence":"additional","affiliation":[{"name":"Department of Biotechnology, Faculty of Basic and Applied Sciences University of Kotli  Kotli Azad Jammu and Kashmir Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0931-5570","authenticated-orcid":false,"given":"Muhammad","family":"Jawad","sequence":"additional","affiliation":[{"name":"Faculty of Basic and Applied Sciences, Chemistry Department University of Kotli  Kotli Azad Jammu and Kashmir Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tahseen","family":"Ghous","sequence":"additional","affiliation":[{"name":"Department of Chemistry Mirpur University of Science &amp; Technology (MUST)  Mirpur Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Muhammad","family":"Irshad","sequence":"additional","affiliation":[{"name":"Faculty of Basic and Applied Sciences, Chemistry Department University of Kotli  Kotli Azad Jammu and Kashmir Pakistan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,5,27]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.psep.2016.04.009"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.3233\/AJW-160016"},{"key":"e_1_2_10_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jenvman.2014.07.029"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s13201-019-0978-9"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.heliyon.2021.e06315"},{"key":"e_1_2_10_7_1","first-page":"446","article-title":"Cold\u2010induced aggregation microextraction technique based on ionic liquid for preconcentration and determination of zinc in environmental samples","volume":"3","author":"Amin A. 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