Xabagta phenolic waa mid ka mid ah alaabta ceeriin ee muhiimka ah ee warshadaha sida suufka biriiga iyo xoqidda. Biyaha wasakhda ah ee la dhaliyo inta lagu jiro soo saarista xabagta phenolic ayaa dhibaato adag ku ah soosaarayaasha.
Biyaha wasakhda ah ee soo saara xabagta phenolic waxay ka kooban yihiin xaddi badan oo ah phenols, aldehydes, resins iyo walxo kale oo dabiici ah, waxayna leeyihiin sifooyinka feejignaanta organic-ga sare, sunta sare, iyo pH hooseeya. Waxaa jira habab badan oo ka baaraandegid oo lagu daweeyo biyaha wasakhda ah ee ka kooban phenol, hababka aadka loo isticmaalo waxaa ka mid ah hababka biochemical, hababka oksaydhka kiimikada, hababka soo saarista, hababka adsorption, hababka gaaska xariijimaha.
Sanadihii la soo dhaafay, habab badan oo cusub ayaa soo baxay, sida habka oksidation katalytic, habka kala soocida xuubka dareeraha, iwm., laakiin dhab ahaantii mashaariicda daaweynta biyaha wasakhda ah ee phenolic, gaar ahaan si loo daboolo heerarka dheecaanka, hababka biochemical ayaa weli ah habka caadiga ah. Tusaale ahaan, habka daaweynta biyaha wasakhda ah ee phenolic ee soo socda.
Marka hore, ku samee daawayn uumi biyaha wasakhda ah ee resin phenolic, soo saar oo ka soo kabso xabagta. Ka dib, kiimikooyin iyo kiciyayaal ayaa lagu daraa biyaha wasakhda ah ee resin phenolic ka dib daaweynta uumiga aasaasiga ah, iyo daaweynta uumiga labaad ayaa la sameeyaa si looga saaro phenol iyo formaldehyde.
Biyaha wasakhda ah ee resin phenolic ka dib markii daaweynta uumiga labaad lagu qaso biyaha wasakhda ah ee bamka, qiimaha pH waxaa lagu hagaajiyaa 7-8, waxaana loo oggol yahay inuu istaago. Ka dib sii wad inaad ku darto ClO2 si aad u oksijiye u geliso biyaha wasakhda ah si loo sii yareeyo waxa ku jira formaldehyde iyo COD. Dabadeed ku dar FeSO4, oo ku hagaaji qiimaha pH ilaa 8-9 si aad meesha uga saarto ClO2 oo ay keentay tallaabadii hore.
Biyaha wasakhda ah ee resin resin-ka ee horay loo daweeyay waxaa lagu sari doonaa daawaynta kimikalka ee SBR si looga saaro wasakhda biyaha ku jirta iyada oo loo marayo nooleyaal.
Biyaha wasakhda ah ee wax soo saarka resin phenolic ayaa horay loo daaweeyay marka hore, ka dibna dib ayaa loo soo cusbooneysiiyaa, si ay biyuhu u gaaraan heerka caadiga ah.
Waqtiga boostada: Agoosto-15-2021