{"id":7832,"date":"2024-08-08T16:01:52","date_gmt":"2024-08-08T16:01:52","guid":{"rendered":"https:\/\/longchangextracts.com\/?p=7832"},"modified":"2024-08-08T16:01:52","modified_gmt":"2024-08-08T16:01:52","slug":"oil-decoloration","status":"publish","type":"post","link":"https:\/\/longchangextracts.com\/hu\/oil-decoloration\/","title":{"rendered":"Mi az olajos elsz\u00ednez\u0151d\u00e9s?"},"content":{"rendered":"<p>A sz\u00edntelen\u00edt\u00e9s egy mos\u00e1si folyamat, teh\u00e1t milyen szennyez\u0151d\u00e9seket rem\u00e9l elt\u00e1vol\u00edtani, \u00e9s milyen m\u00e9rt\u00e9kben? A k\u00f6vetkez\u0151k\u00e9ppen \u00edrj\u00e1k le:<\/p>\n<p><strong>Olaj \u00e9s zs\u00edr oxid\u00e1ci\u00f3s term\u00e9kei<\/strong><\/p>\n<p>Az adszorpci\u00f3s sz\u00edntelen\u00edt\u00e9si elj\u00e1r\u00e1s a zs\u00edrok \u00e9s olajok oxid\u00e1ci\u00f3s term\u00e9keinek teljes elt\u00e1vol\u00edt\u00e1s\u00e1t rem\u00e9li, bele\u00e9rtve a zs\u00edrok \u00e9s olajok automatikus oxid\u00e1ci\u00f3j\u00e1t, az els\u0151dleges oxid\u00e1ci\u00f3s term\u00e9kek (hidroperoxidok) enzimes oxid\u00e1ci\u00f3j\u00e1t \u00e9s a m\u00e1sodlagos oxid\u00e1ci\u00f3s term\u00e9kek, valamint a tokoferolok, szterolok, pigmentek \u00e9s egy\u00e9b lipidoxid\u00e1ci\u00f3s term\u00e9kek kialakul\u00e1s\u00e1nak boml\u00e1s\u00e1t. Ezek az anyagok l\u00e9teznek a sz\u00edntelen\u00edtend\u0151 olajban, \u00e9s ha ezeket nem lehet elt\u00e1vol\u00edtani, akkor az olaj stabilit\u00e1sa s\u00falyosan k\u00e1rosodik.<\/p>\n<p>Oxid\u00e1ci\u00f3s term\u00e9kek \u00e1ltal\u00e1ban egy bizonyos polarit\u00e1s, lehet hat\u00e9konyan adszorbe\u00e1l\u00f3dik a feh\u00e9r agyag \u00e9s elt\u00e1vol\u00edtani, ugyanakkor az aktiv\u00e1l\u00e1s a feh\u00e9r agyag lehet hidroperoxidok \u00e9s epoxi vegy\u00fcletek, mint p\u00e9ld\u00e1ul a leboml\u00e1s ill\u00e9kony aldehidek \u00e9s ketonok, ami biztos\u00edtja, hogy ezek a vegy\u00fcletek a k\u00f6vetkez\u0151 l\u00e9p\u00e9s a szagtalan\u00edt\u00e1si folyamat, hogy t\u00e1vol\u00edtsa el hat\u00e9konyan. Ez a sz\u00edntelen\u00edt\u00e9s els\u0151 feladata.<\/p>\n<p><strong>Nyomf\u00e9mek<\/strong><\/p>\n<p>Az olajos magvakban term\u00e9szetes m\u00f3don jelen vannak nyomf\u00e9mek, p\u00e9ld\u00e1ul vas \u00e9s r\u00e9z, ak\u00e1r az \u00fcltetv\u00e9nyr\u0151l, ak\u00e1r az olajfeldolgoz\u00f3 l\u00e9tes\u00edtm\u00e9nyb\u0151l sz\u00e1rmaznak; ezeket a nyomf\u00e9meket a szagtalan\u00edt\u00e1s el\u0151tt a lehet\u0151 legnagyobb m\u00e9rt\u00e9kben el kell t\u00e1vol\u00edtani adszorpci\u00f3val, hogy biztos\u00edts\u00e1k a szagtalan\u00edtott olajok stabilit\u00e1s\u00e1t \u00e9s min\u0151s\u00e9g\u00e9t. K\u00fcl\u00f6n\u00f6sen a hidrog\u00e9nezett olajok ut\u00f3lagos sz\u00edntelen\u00edt\u00e9se eset\u00e9n a f\u0151 c\u00e9l a nyomf\u00e9mkataliz\u00e1torok elt\u00e1vol\u00edt\u00e1sa.<\/p>\n<p><strong>Szappan<\/strong><\/p>\n<p>Az adszorpci\u00f3s sz\u00edntelen\u00edt\u00e9s a legjobb m\u00f3dja a szappannyomok elt\u00e1vol\u00edt\u00e1s\u00e1nak. B\u00e1r a v\u00edzben old\u00f3d\u00f3 n\u00e1triumszappan nagy r\u00e9sze elt\u00e1vol\u00edthat\u00f3 a l\u00fagos finom\u00edt\u00f3olaj v\u00edzzel t\u00f6rt\u00e9n\u0151 mos\u00e1s\u00e1val, az olajban m\u00e9g mindig van egy kis mennyis\u00e9g\u0171 v\u00edzben nem old\u00f3d\u00f3 f\u00e9mszappan, p\u00e9ld\u00e1ul kalcium\/magn\u00e9zium szappan stb. A foszfolipidek a l\u00fagos finom\u00edt\u00e1si folyamatban r\u00e9szben hidroliz\u00e1lhat\u00f3k is, hogy a l\u00fagos finom\u00edt\u00e1s\u00fa olaj kalcium\/magn\u00e9zium szappanmaradv\u00e1nya n\u00f6vekedjen. Ezeket az anyagokat el kell sz\u00edntelen\u00edteni, hogy maximaliz\u00e1lj\u00e1k elt\u00e1vol\u00edt\u00e1sukat.<\/p>\n<p><strong>Foszfolipid- \u00e9s glikolipid-marad\u00e9kok<\/strong><\/p>\n<p>A sz\u00f3jaolaj, repceolaj, napraforg\u00f3olaj, f\u00f6ldimogyor\u00f3olaj \u00e9s gyapotmagolaj magas foszfolipidtartalommal rendelkezik, a p\u00e1lmaolaj, p\u00e1lmamagolaj \u00e9s k\u00f3kuszolaj foszfolipidtartalma alacsony, de tartalmaz bizonyos mennyis\u00e9g\u0171 glikolipidet, \u00e9s a legt\u00f6bb olaj \u00e9s zs\u00edr a cs\u00edr\u00e1tlan\u00edt\u00e1s ut\u00e1n is kis mennyis\u00e9g\u0171 foszfolipidet vagy glikolipidet hagy.<\/p>\n<p>A k\u00f6zelm\u00faltban a rizskorpaolaj kutat\u00e1sa sor\u00e1n meg\u00e1llap\u00edtott\u00e1k, hogy az olajban van egy k\u00fcl\u00f6nleges glikolipidfajta - foszfortartalm\u00fa glikolipidek -, amelyeket a hagyom\u00e1nyos cs\u00edr\u00e1tlan\u00edt\u00e1si m\u00f3dszerekkel szinte lehetetlen elt\u00e1vol\u00edtani, de megfelel\u0151 adszorbensekkel maxim\u00e1lisan elt\u00e1vol\u00edthat\u00f3k.<\/p>\n<p><strong>Policiklikus arom\u00e1s sz\u00e9nhidrog\u00e9nek \u00e9s peszticidmaradv\u00e1nyok<\/strong><\/p>\n<p>Az olaj k\u00f6rnyezetszennyez\u0151 anyagai k\u00f6z\u00e9 els\u0151sorban a n\u00f6v\u00e9nyv\u00e9d\u0151szer-maradv\u00e1nyok \u00e9s a PAH-ok tartoznak, \u00e9s az adszorpci\u00f3 \u00e9s a sz\u00edntelen\u00edt\u00e9s ezeket is jelent\u0151sen elt\u00e1vol\u00edthatja.<\/p>\n<p>A n\u00f6v\u00e9nyv\u00e9d\u0151szer-marad\u00e9kok f\u0151k\u00e9nt az olajn\u00f6v\u00e9nyek n\u00f6veked\u00e9se sor\u00e1n alkalmazott n\u00f6v\u00e9nyv\u00e9d\u0151 szerekb\u0151l, valamint a szennyezett talajb\u00f3l \u00e9s v\u00edzb\u0151l sz\u00e1rmaznak, a foszfort \u00e9s nitrog\u00e9nt tartalmaz\u00f3 n\u00f6v\u00e9nyv\u00e9d\u0151 szereket a biol\u00f3giai leboml\u00e1s ut\u00e1n az olaj felsz\u00edvja, \u00e9s az olajtermel\u00e9ssel az olajba ker\u00fclnek, \u00e9s a feh\u00e9r agyag adszorpci\u00f3j\u00e1val elt\u00e1vol\u00edthat\u00f3k a sz\u00edntelen\u00edt\u00e9s sor\u00e1n; a szerves kl\u00f3rpeszticidek nehezen bomlanak le biol\u00f3giailag, \u00e9s hossz\u00fa ideig szennyezik a talajt \u00e9s a vizet, \u00e9s b\u00e1r az ilyen peszticidek haszn\u00e1lat\u00e1t sok orsz\u00e1gban betiltott\u00e1k, a k\u00f6rnyezet m\u00e9g mindig szennyezett, \u00e9s neh\u00e9z lesz adszorpci\u00f3val elt\u00e1vol\u00edtani \u0151ket, ha egyszer beker\u00fclnek az olajba. Miut\u00e1n az olajban neh\u00e9z elt\u00e1vol\u00edtani az adszorpci\u00f3val, csak a szagtalan\u00edt\u00e1sban lehet elt\u00e1vol\u00edtani.<\/p>\n<p>A policiklikus arom\u00e1s sz\u00e9nhidrog\u00e9nek els\u0151sorban a szennyez\u0151 anyagok \u00e9g\u00e9si folyamat\u00e1b\u00f3l sz\u00e1rmaznak, p\u00e9ld\u00e1ul a f\u00fcstg\u00e1z sz\u00e1r\u00edt\u00f3olaj n\u00f6veli a policiklikus arom\u00e1s sz\u00e9nhidrog\u00e9nek tartalm\u00e1t az olajban, k\u00fcl\u00f6n\u00f6sen a k\u00f3kuszolajban. \u00c1ltal\u00e1ban a feh\u00e9r agyag nem k\u00e9pes adszorbe\u00e1lni a nem pol\u00e1ros PAH-kat, de az akt\u00edv sz\u00e9n k\u00e9pes adszorbe\u00e1lni a 4-n\u00e9l t\u00f6bb gy\u0171r\u0171vel rendelkez\u0151 neh\u00e9z PAH-kat, \u00e9s a fennmarad\u00f3 k\u00f6nny\u0171 PAH-k elt\u00e1vol\u00edthat\u00f3k a szagtalan\u00edt\u00e1s sor\u00e1n.<\/p>\n<p><strong>Pigment\u00e1ci\u00f3<\/strong><\/p>\n<p>A sz\u00edn r\u00e9szleges elt\u00e1vol\u00edt\u00e1sa (sz\u00edntelen\u00edt\u00e9s) term\u00e9szetesen a zs\u00edrok \u00e9s olajok sz\u00edntelen\u00edt\u00e9s\u00e9nek egyik c\u00e9lja.<\/p>\n<p>Az olajokban \u00e9s zs\u00edrokban l\u00e9v\u0151 pigmentek els\u0151dleges pigmentekre \u00e9s \u00fajdons\u00fclt pigmentekre oszthat\u00f3k.<\/p>\n<p>Az el\u0151bbiek a karotinoidok \u00e9s a klorofill term\u00e9szetes \u00e1llapotukban, valamint a gyapotmagolajban l\u00e9v\u0151 gyapotfenol. A klorofillokat f\u0151k\u00e9nt a sz\u00edntelen\u00edt\u00e9s sor\u00e1n t\u00e1vol\u00edtj\u00e1k el, \u00e9s a klorofillok a term\u00e9szetes pigmentek egy olyan t\u00edpusa, amelyet a sz\u00edntelen\u00edt\u00e9s sor\u00e1n a lehet\u0151 legnagyobb m\u00e9rt\u00e9kben szeretn\u00e9nk elt\u00e1vol\u00edtani. A karotinoidok h\u0151\u00e9rz\u00e9kenyek, \u00e9s a szagtalan\u00edt\u00e1s sor\u00e1n a termikus krakkol\u00e1ssal hat\u00e9konyan elt\u00e1vol\u00edthat\u00f3k. A feh\u00e9r agyag nem adszorbe\u00e1lja a pamutfenolt, de a pamutfenol savas, l\u00fagos finom\u00edt\u00e1s sor\u00e1n semleges\u00edt\u00e9ssel elt\u00e1vol\u00edthat\u00f3.<\/p>\n<p>Ez ut\u00f3bbiak az els\u0151dleges pigmentek oxidat\u00edv boml\u00e1sterm\u00e9kei vagy m\u00e1s lipidekkel val\u00f3 reakci\u00f3term\u00e9keik, amelyek a folyamat sor\u00e1n \u00fajonnan sz\u00fcletett pigmentek. \u00dajsz\u00fcl\u00f6tt pigment a folyamat sor\u00e1n a sz\u00edntelen\u00edt\u00e9s rem\u00e9nye teljesen elt\u00e1vol\u00edtani, de nehezebb.<\/p>\n<p>A pigment elt\u00e1vol\u00edt\u00e1sa az olajban nem t\u00e1maszkodik teljes m\u00e9rt\u00e9kben a sz\u00edntelen\u00edt\u00e9si folyamatra, a pigment elt\u00e1vol\u00edt\u00e1sa az olajban, a finom\u00edt\u00e1si folyamat sor\u00e1n, a degumming, a l\u00fagos finom\u00edt\u00e1s, a savas finom\u00edt\u00e1s, a szagtalan\u00edt\u00e1si folyamat a pigment elt\u00e1vol\u00edt\u00e1s\u00e1nak hat\u00e1sa, az olaj \u00e9s a zs\u00edr sz\u00edn\u00e9nek cs\u00f6kken\u00e9se k\u00eds\u00e9ri, ami viszonylag cs\u00f6kkenti a nagysz\u00e1m\u00fa pigment elt\u00e1vol\u00edt\u00e1s\u00e1nak sz\u00fcks\u00e9gess\u00e9g\u00e9t a sz\u00edntelen\u00edt\u00e9si szakaszb\u00f3l. Val\u00f3j\u00e1ban a p\u00e1lmaolaj \u00e9s a sz\u00f3jaolaj eset\u00e9ben a sz\u00edntelen\u00edt\u00e9si folyamat nem j\u00e1tszik jelent\u0151s szerepet az olaj sz\u00edn\u00e9nek jav\u00edt\u00e1s\u00e1ban.<\/p>\n<p>R\u00f6viden, a sz\u00edntelen\u00edt\u00e9s c\u00e9lja, hogy a sz\u00edntelen\u00edtett olaj a sz\u00ednjav\u00edt\u00e1sban, elm\u00e9letileg nem t\u00e1vol\u00edtja el az olajban l\u00e9v\u0151 \u00f6sszes pigmentet, \u00e9s n\u00e9ha m\u00e9g a f\u0151 c\u00e9l nem a pigment elt\u00e1vol\u00edt\u00e1sa, hanem az oxid\u00e1ci\u00f3s term\u00e9kek cs\u00f6kkent\u00e9se az olajban, a marad\u00e9k foszfor, a marad\u00e9k szappan \u00e9s a nyomf\u00e9mek, a mez\u0151gazdas\u00e1gi marad\u00e9kok \u00e9s egy\u00e9b szennyez\u0151d\u00e9sek cs\u00f6kkent\u00e9se, ez\u00e1ltal jav\u00edtva az olaj \u00edz\u00e9t \u00e9s oxid\u00e1ci\u00f3s stabilit\u00e1s\u00e1t, hogy jav\u00edtsa az olaj szerep\u00e9t a szagtalan\u00edt\u00e1si folyamat k\u00f6vetkez\u0151 l\u00e9p\u00e9s\u00e9ben, hogy min\u0151s\u00edtett nyersanyagolajat biztos\u00edtson. Ez\u00e9rt a sz\u00edntelen\u00edt\u00e9si folyamat nem hagyhat\u00f3 el, m\u00e9g akkor sem, ha a brutt\u00f3 olaj sz\u00edne nagyon vil\u00e1gos. Ellenkez\u0151 esetben a teljesen finom\u00edtott olaj \u00edze k\u00f6nnyen romlik.<\/p>\n<p>Az \u00e9tolaj biztons\u00e1ga szempontj\u00e1b\u00f3l a sz\u00edn kicsi, az \u00edz (stabilit\u00e1s) nagy, \u00edgy a sz\u00edntelen\u00edt\u00e9si folyamat feladata: a k\u00fcl\u00f6nf\u00e9le \u00fcgyek elt\u00e1vol\u00edt\u00e1sa, \u00e9s a pigment elt\u00e1vol\u00edt\u00e1sa m\u00e9rs\u00e9kelt lehet.<\/p>","protected":false},"excerpt":{"rendered":"<p>Decolorization is a washing process, so what are the impurities it hopes to remove and to what extent? It is described as follows: Oxidation products of oil and grease Adsorption decolorization process hopes to completely remove the oxidation products of fats and oils, including automatic oxidation of fats and oils, enzyme oxidation of primary oxidation [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is oil decoloration? - China Chemical Manufacturer<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/longchangextracts.com\/hu\/oil-decoloration\/\" \/>\n<meta property=\"og:locale\" content=\"hu_HU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is oil decoloration? - China Chemical Manufacturer\" \/>\n<meta property=\"og:description\" content=\"Decolorization is a washing process, so what are the impurities it hopes to remove and to what extent? 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