{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T07:48:33Z","timestamp":1759132113177},"reference-count":0,"publisher":"Slovenian Chemical Society","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ACSi"],"abstract":"<jats:p>The presence of dye molecules in water resources has harmful effects on environment. Therefore, it is important to remove dyes from wastewater using eco-friendly materials. In this study, adsorptive removal of diazo dye Direct Red 28 (DR-28) and tetra azo dye Direct Black 22 (DB-22) was investigated by using a new composite, kaolin supported zinc ferrite (KZF) as adsorbent. Characteristics of the composite, KZF were determined using various techniques such as FTIR, SEM, XRD, VSM, and EDS\/Mapping. The adsorption of DR-28 and DB-22 on KZF was studied as a function of contact time, initial dye concentration, adsorbent amount, temperature, initial pH of the solution as well as the heat treatment of the composite. The removal of DR-28 was found to be 92.4% for the KZF concentration of 1g\/200mL, initial dye concentration of 20 mg\/L, contact time of 120 min at original pH and 21 \u00b0C. On the other hand the removal of DB-22 was found to be 91.7% under the same conditions at 40 \u00b0C. The results showed that Langmuir isotherm is suitable for the adsorption of DR-28 and DB-22 on KZF under given conditions. It was found that adsorption of DR-28 on KZF was exothermic while that of DB-22 was endothermic. The enthalpy changes (\u0394H0) for the adsorption of DR-28 and DB-22 dyes on KZF were found to be \u201324.59 kJ\/mol and 61.95 kJ\/mol respectively. \u0394S0 for the adsorption of DR-28 dye was found to be negative while \u0394S0 for the adsorption of DB-22 was positive. The kinetic data fitted well to the pseudo second order model for the adsorption of DR-28 and DB-22 on KZF composite. These results showed that the prepared adsorbent KZF could be used as an adsorbent for the efficient removal of anionic dyes.<\/jats:p>","DOI":"10.17344\/acsi.2021.7289","type":"journal-article","created":{"date-parts":[[2022,9,21]],"date-time":"2022-09-21T11:29:31Z","timestamp":1663759771000},"page":"336-348","source":"Crossref","is-referenced-by-count":6,"title":["Removal of Diazo Dye Direct Red 28 and Tetra Azo Dye Direct Black 22 Using Synthesized Magnetic Kaolin Supported Zinc Ferrite"],"prefix":"10.17344","volume":"69","author":[{"given":"Serap","family":"F\u0131nd\u0131k","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"7072","published-online":{"date-parts":[[2022,6,15]]},"container-title":["Acta Chimica Slovenica"],"original-title":[],"deposited":{"date-parts":[[2022,9,21]],"date-time":"2022-09-21T11:29:42Z","timestamp":1663759782000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.matheo.si\/index.php\/ACSi\/article\/view\/7289"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6,15]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2022,6,15]]}},"URL":"https:\/\/doi.org\/10.17344\/acsi.2021.7289","relation":{},"ISSN":["1580-3155"],"issn-type":[{"value":"1580-3155","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,6,15]]}}}