Surfactants ib txwm muaj tau tsim los ntawm tib neeg thiab tuaj yeem tsim kev puas tsuaj rau ib puag ncig, tshwj xeeb tshaj yog dej ecosystems. Hauv kev sib zog los txo qhov kev cuam tshuam tsis zoo no, cov kws tshawb fawb tau tsim cov biodegradable surfactants.
Cov surfactants cuam tshuam li cas rau ib puag ncig?
Nws tau txiav txim siab tias lub luag haujlwm ntawm anionic surfactants nyob rau hauv ib puag ncig yog tsis meej: lawv tuaj yeem ua rau muaj kuab paug ib puag ncig loj nrog cov tshuaj lom rau cov kab mob nyob; txwv tsis pub, lawv tuaj yeem txhawb qhov kev puas tsuaj thiab / lossis tshem tawm lwm yam tsis zoo thiab cov organic ua paug los ntawm ib puag ncig.
Dab tsi yog qhov phem ntawm surfactants?
Ntau tus surfactant uas muaj cov dej khib nyiab pov tseg rau hauv ib puag ncig, ua rau ua phem rau lub neej hauv dej, ua paug dej thiab ua rau tib neeg noj qab haus huv. Yog li ntawd, nws yog ib qho tseem ceeb los saib xyuas thiab tswj emissions ntawm surfactants nyob rau hauv ib puag ncig dej.
Dab tsi surfactants yog biodegradable?
Qhov kawg degradation tau hais tias tau tshwm sim thaum lub surfactant molecule tau muab rau CO2, CH4, dej, ntxhia ntsev thiab biomass. LAS feem ntau suav tias yog biodegradable surfactants. Cov qib biodegradation siab heev (97–99%) tau pom hauv qee qhov WWTP siv cov txheej txheem aerobic [7], [8], [9].
Yuav ua li cas surfactants biodegrade?
Kev tshuaj ntsuam ntawm kev tshuaj ntsuam-kev ntsuam xyuas qhia tau hais tias rau txhua qhov kev sim ntsuas cov roj-cawv ethoxylates, muaj qhov kev nyiam tshaj plaws surfactant biodegradation ntawm surfactant nrog ntev alkyl saw thiab siab dua. Qib ntawm ethoxylation.
