{"refrec":{"BRefID":406499,"RR":"<b>Kibuta, C.; Akin, O.; Withoeck, D.; He, Q.; Schmidt, M.; Varghese, R.J.; Schlummer, M.; De Meester, S.; Calik, F.D.; Denton, M.; Buettner, A.; Van Geem, K.M.</b> (2025). Assessing the feasibility of ocean plastic waste as secondary feedstock for the production of base chemicals. <i>Waste Management 195</i>: 167-176. <a href=\"https://dx.doi.org/10.1016/j.wasman.2025.02.003\" target=\"_blank\">https://dx.doi.org/10.1016/j.wasman.2025.02.003</a>","BEntID":404297,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>Waste Management 195</i>: 167-176. <a href=\"https://dx.doi.org/10.1016/j.wasman.2025.02.003\" target=\"_blank\">https://dx.doi.org/10.1016/j.wasman.2025.02.003</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kibuta, C.; Akin, O.; Withoeck, D.; He, Q.; Schmidt, M.; Varghese, R.J.; Schlummer, M.; De Meester, S.; Calik, F.D.; Denton, M.; Buettner, A.; Van Geem, K.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kibuta, C. <i>et al.</i>","Englishabstract":"Plastic pollution in the marine environment is a growing concern, with around 10&nbsp;% of globally produced plastics ending up in oceans annually. Most ocean plastics are incinerated for energy recovery if harvested, since harvesting remains a key challenge. This study evaluated the feasibility of recovering base chemicals from the polyethylene (PE) and polypropylene (PP) fraction of ocean plastic waste through a single-step olefin production method. The approach employed a micropyrolyzer unit coupled with comprehensive two-dimensional gas chromatography (µP-GC&nbsp;×&nbsp;GC) and dual detectors to analyze gaseous product yields. Elemental and matrix analyses of the waste were performed using CHNS/O elemental analysis, Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES), and Combustion Ion Chromatography (CIC) to identify potentially harmful components. We present here the yields of critical light olefins such as ethylene (13&nbsp;wt% from PE samples, 9&nbsp;wt% from PP samples) and propylene (10&nbsp;wt% from PE samples, 17&nbsp;wt% from PP samples) at 700&nbsp;°C. Pyrolysis products detected in PP samples included 24&nbsp;wt% of branched olefins, whereas 54&nbsp;wt% of linear olefins were detected in PE samples. The aromatics detected in the samples ranged between 1–3&nbsp;wt%, with naphthene levels ranging between 4–7&nbsp;wt%. Furthermore, metal contaminants, such as&nbsp;nickel, silicon, copper, iron, sodium, calcium, and potassium, were detected from the waste via ICP-OES, and chlorine levels via CIC. The results suggest that ocean plastic waste could serve as feedstock for production of light olefins, provided pre- and post-treatment procedures are implemented to mitigate contamination","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Assessing the feasibility of ocean plastic waste as secondary feedstock for the production of base chemicals","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2025-09-25 01:36:50.712317","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Ocean Plastic waste; Single-step olefin production via micropyrolysis; Comprehensive two-dimensional gas chromatography","OtherDescriptors":null,"Notes":null,"AnaPub":2025,"MonPub":null,"DateUpdate":"2025-09-18","DateCreate":"2025-03-31","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:001425716700001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.wasman.2025.02.003"},"refs":null,"anarec":{"AnaID":406499,"PubliDate":2025,"Pagination":"167-176","XtraPublOfAnaID":null,"ISBN":null,"Volume":"195","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":280004,"SerRR":"Waste Management. 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