{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,19]],"date-time":"2026-05-19T22:29:27Z","timestamp":1779229767140,"version":"3.51.4"},"reference-count":41,"publisher":"IWA Publishing","issue":"2","content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2019,1,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Antibiotics, as emerging contaminants, are of global concern due to the development of antibiotic resistant microorganisms. Current wastewater treatment technology cannot efficiently remove sewage antibiotics and therefore new low-cost technologies are needed. Adsorption is a widely used process for removal of substances, and the search for efficient, low-cost adsorbents is ongoing. In this work, termite feces treated with H2SO4 (FT\/H2SO4) were used as a low-cost adsorbent for removal of norfloxacin (NOR) present in aqueous medium. Termite feces were treated with H2SO4 at a ratio of 1:1 for 24 h, at 100 \u00b0C. The parameters contact time, initial NOR concentration, medium pH and temperature were evaluated. The optimum adsorption pH was 8.0. The pseudo-second-order model was found to best represent the kinetics of NOR adsorption. The maximum adsorption capacity, calculated from the Sips isotherm model, was 104.4 mg\/g at 55 \u00b0C. The positive values of \u0394H0 (change in enthalpy) confirm the endothermic nature of the adsorption. The results show that FT\/H2SO4 is an efficient adsorbent for removal of NOR present in aqueous medium. The adsorption capacity is higher than those reported in the literature for other low-cost adsorbents.<\/jats:p>","DOI":"10.2166\/wst.2019.052","type":"journal-article","created":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T14:23:43Z","timestamp":1549031023000},"page":"291-301","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":14,"title":["Use of chemically activated termite feces a low-cost adsorbent for the adsorption of norfloxacin from aqueous solution"],"prefix":"10.2166","volume":"79","author":[{"given":"Tamiris","family":"Chahm","sequence":"first","affiliation":[{"name":"N\u00facleo de Investiga\u00e7\u00f5es Qu\u00edmico-Farmac\u00eauticas (NIQFAR), Universidade do Vale do Itaja\u00ed (UNIVALI), Itaja\u00ed 88302-202, Santa Catarina, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Larissa F\u00e1tima","family":"de Souza","sequence":"first","affiliation":[{"name":"N\u00facleo de Investiga\u00e7\u00f5es Qu\u00edmico-Farmac\u00eauticas (NIQFAR), Universidade do Vale do Itaja\u00ed (UNIVALI), Itaja\u00ed 88302-202, Santa Catarina, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nathalia Ramos","family":"dos Santos","sequence":"first","affiliation":[{"name":"N\u00facleo de Investiga\u00e7\u00f5es Qu\u00edmico-Farmac\u00eauticas (NIQFAR), Universidade do Vale do Itaja\u00ed (UNIVALI), Itaja\u00ed 88302-202, Santa Catarina, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bruna Aparecida","family":"da Silva","sequence":"first","affiliation":[{"name":"N\u00facleo de Investiga\u00e7\u00f5es Qu\u00edmico-Farmac\u00eauticas (NIQFAR), Universidade do Vale do Itaja\u00ed (UNIVALI), Itaja\u00ed 88302-202, Santa Catarina, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Clovis Antonio","family":"Rodrigues","sequence":"first","affiliation":[{"name":"N\u00facleo de Investiga\u00e7\u00f5es Qu\u00edmico-Farmac\u00eauticas (NIQFAR), Universidade do Vale do Itaja\u00ed (UNIVALI), Itaja\u00ed 88302-202, Santa Catarina, Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"945","published-online":{"date-parts":[[2019,2,1]]},"reference":[{"key":"2020032813414140600_WST-EM181279C1","doi-asserted-by":"crossref","first-page":"174","DOI":"10.1016\/j.molliq.2016.02.059","article-title":"Are the thermodynamic parameters correctly estimated in liquid-phase adsorption phenomena?","volume":"218","year":"2016","journal-title":"Journal of Molecular Liquids"},{"key":"2020032813414140600_WST-EM181279C2","article-title":"Strategies to combat antibiotic resistance in the wastewater treatment plants","year":"2018","journal-title":"Frontiers in Microbiology."},{"key":"2020032813414140600_WST-EM181279C3","doi-asserted-by":"crossref","first-page":"448","DOI":"10.1016\/j.watres.2017.07.004","article-title":"The potential implications of reclaimed wastewater reuse for irrigation 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