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When the reaction occurs solely in the tubular reactor but concentration measurements are taken in the stirred tank, treating the system as a batch reactor leads to falsified apparent kinetic parameters. Here we analyze this configuration using asymptotic methods for zeroth-, first-, second- and nth- order kinetics, deriving simple equations that relate apparent kinetic parameters to their true values. These relationships enable correction of falsified parameters under defined conditions, revealing that at low conversion per pass, reaction order remains accurate while rate constants are underestimated, whereas at high conversion per pass, the apparent kinetics shifts to first-order with rate constants governed by tank dynamics. This work provides practical tools for accurate kinetic analysis in batch recirculation reactors, improving reactor design and kinetic modeling.<\/jats:p>","DOI":"10.1021\/acsomega.6c05077","type":"journal-article","created":{"date-parts":[[2026,9,10]],"date-time":"2026-09-10T16:01:22Z","timestamp":1789056082000},"page":"55903-55909","source":"Crossref","is-referenced-by-count":0,"title":["Analysis of Apparent\nand True Kinetics in Batch Circulation\nReactor Systems"],"prefix":"10.1021","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6544-7098","authenticated-orcid":true,"given":"Reinaldo","family":"Giudici","sequence":"first","affiliation":[{"name":"Universidade de Sa\u0303o Paulo , , Av. Prof. Luciano Gualberto, 380, Travessa do Polite\u0301cnico , , ,","place":["Sa\u0303o Paulo, SP, Brasil, 05508-010"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,9,10]]},"reference":[{"key":"2026092210582539700_cit1","doi-asserted-by":"publisher","first-page":"2439","DOI":"10.1021\/jp040236f","article-title":"Kinetics\nof liquid phase photocatalyzed reactions: an illuminating approach","volume":"109","author":"Ollis","year":"2005","journal-title":"J. Phys. Chem. B"},{"key":"2026092210582539700_cit2","doi-asserted-by":"publisher","first-page":"7","DOI":"10.1016\/j.cattod.2018.11.011","article-title":"Kinetic analysis\nof liquid phase photocatalysis and photolysis: A frequent disguise","volume":"340","author":"Ollis","year":"2020","journal-title":"Catal. 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D. S.\n          \n          Degradac\u0327a\u0303o do pesticida amicarbazona em meio aquoso\npelo processo TiO2\/UV irradiado por luz solar, M.Sc. Dissertation; Universidade de Sa\u0303o Paulo, 2012."}],"container-title":["ACS Omega"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsomega.6c05077","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/37\/55903\/68474445\/acsomega.6c05077.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/11\/37\/55903\/68474445\/acsomega.6c05077.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,9,22]],"date-time":"2026-09-22T16:09:06Z","timestamp":1790093346000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/acsodf\/article\/11\/37\/55903\/5427829\/Analysis-of-Apparent-and-True-Kinetics-in-Batch"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,9,10]]},"references-count":35,"journal-issue":{"issue":"37","published-online":{"date-parts":[[2026,9,10]]},"published-print":{"date-parts":[[2026,9,22]]}},"URL":"https:\/\/doi.org\/10.1021\/acsomega.6c05077","relation":{},"ISSN":["2470-1343"],"issn-type":[{"value":"2470-1343","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,9,10]]}}}