{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,30]],"date-time":"2026-05-30T05:37:40Z","timestamp":1780119460503,"version":"3.54.0"},"reference-count":60,"publisher":"IWA Publishing","issue":"10","license":[{"start":{"date-parts":[[2022,4,21]],"date-time":"2022-04-21T00:00:00Z","timestamp":1650499200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100013318","name":"ShanXi Science and Technology Department","doi-asserted-by":"publisher","award":["No. 201901D211353"],"award-info":[{"award-number":["No. 201901D211353"]}],"id":[{"id":"10.13039\/501100013318","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["iwaponline.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,5,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Degradation mechanism of methyl orange (MO), a typical azo dye, with pyrite (FeS2) activated persulfate (PS) was explored. The results showed that when the initial concentration of MO was 0.1 mM, FeS2 was 1.6 g\/L and PS was 1.0 mM, the removal rate of MO could reach 92.9% in 150 min, and the removal rate of total organic carbon could reach 14.1%. In addition, both pH \u2264 2 and pH \u2265 10 could have an inhibitory effect in the FeS2\/PS system. Furthermore, Cl\u2212 and low concentrations of had little effect on the degradation of MO with FeS2\/PS. However, and high concentrations of could inhibit the degradation of MO in the system. Besides, MO in river water and tap water were not degraded in FeS2\/PS system, but acidification (pH = 4) would greatly promote the degradation. In addition, the removal rate of MO with FeS2\/PS could still reach about 90% after five cycles of FeS2. Furthermore, the intermediates and possible degradation pathways were speculated by LC-MS, and the degradation mechanism of MO by FeS2\/PS was that the cycle of Fe(III)\/Fe(II) could continuously activate persulfate to produce . The results could provide technical support for azo dye degradation in the FeS2\/PS system.<\/jats:p>","DOI":"10.2166\/wst.2022.134","type":"journal-article","created":{"date-parts":[[2022,4,21]],"date-time":"2022-04-21T13:13:54Z","timestamp":1650546834000},"page":"2912-2927","update-policy":"https:\/\/doi.org\/10.2166\/iwapcrossmarkpolicypage","source":"Crossref","is-referenced-by-count":27,"title":["Degradation of methyl orange by pyrite activated persulfate oxidation: mechanism, pathway and influences of water substrates"],"prefix":"10.2166","volume":"85","author":[{"given":"Hui","family":"Liu","sequence":"first","affiliation":[{"name":"1 College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, PR China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fenwu","family":"Liu","sequence":"additional","affiliation":[{"name":"1 College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, PR 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