Nu Vevi Siwo Wotsɔ Kpɔa Bisphenol A Dzi
Le nusiwo wotsɔ wɔa nu xoxowo ƒe dzadzɛnyenye gome la, phenol kple acetone, abe nusiwo wotsɔ wɔa bisphenol A koŋ ene, hiã be woakpɔ woƒe dzadzɛnyenye dzi vevie. Mele be phenol ƒe dzadzɛnyenye nade 99.5% o, eye acetone ƒe dzadzɛnyenye naɖo wu 99%. Nu xoxo siwo me kɔ ŋutɔ ate ŋu aɖe ɖiƒoƒo ƒe nudede nuwɔna la me dzi akpɔtɔ eye wòana be nuwɔna la nayi edzi nyuie.
Nuwɔna ƒe dzoxɔxɔ dzi ɖuɖu le vevie ŋutɔ. Zi geɖe la, condensation reaction ƒe dzoxɔxɔ nɔa 40 – 60°C dome. Le dzoxɔxɔ ƒe didime sia me la, nuwɔna ƒe agbɔsɔsɔme kple nusi wowɔ ƒe tiatia ate ŋu ada asɔ nyuie. Dzoxɔxɔ si kɔ akpa alo bɔbɔ akpa akpɔ ŋusẽ ɖe bisphenol A BPA ƒe kutsetse kple eƒe nyonyome dzi. Dɔwɔwɔ kple tiatiawɔwɔ si le nusi naa nu ʋãna ŋu lae afia mɔ si dzi wòato awɔ dɔa. Acid-nu siwo wozãna zi geɖe abe sulphuric acid ene hiã be woazã woƒe agbɔsɔsɔ kple agbɔsɔsɔme si sɔ pɛpɛpɛ. Zi geɖe la, sulphuric acid ƒe agbɔsɔsɔme trɔna le teƒe aɖe, eye agbɔsɔsɔme si woatsɔ awɔe nyea nusiwo wotsɔ wɔe ƒe agbɔsɔsɔ bliboa ƒe akpa aɖe koŋ, ale be woakpɔ egbɔ be nusi naa nu ʋãna la wɔa eƒe dɔwɔwɔ nyuitɔ kekeake. Nuwɔna ƒe nyaƒoɖeamenu hã kpɔa ŋusẽ ɖe bisphenol A BPA wɔwɔ dzi. Nyaƒoɖeamenu ƒe didime si sɔ enye 0.5 – 1.5 MPa. Nyaƒoɖeamenu ƒe nɔnɔme si li ke kpena ɖe ame ŋu be nuwɔna ƒe ɖoɖoa li ke eye wòdoa mass transfer kple reaction ƒe ŋgɔyiyi ɖe ŋgɔ. Nusiwo wotsɔ wɔe ƒe sɔsɔme do ƒome tẽ kple alesi wowɔa nui nyuie. Zi geɖe la, wokpɔa phenol kple acetone ƒe molar ratio dzi le 2.5 – 3.5:1. Ne wotsɔe sɔ kple wo nɔewo nyuie la, ate ŋu ana nusiwo wotsɔ wɔe la nawɔ dɔ bliboe, ana bisphenol A BPA ƒe kutsetse nadzi ɖe edzi, eye wòaɖe nusiwo dona tso eme dzi akpɔtɔ.

Bisphenol BPA ƒe tɔtrɔ doa ŋusẽ mɔ̃ɖaŋununya ƒe ŋusẽ, ʋuʋudedi kple vuvu ƒe tsitretsitsi, si le klalo be yeakpɔ kuxi sesẽwo gbɔ.

Ne èdi be yeaƒle atike siwo ŋu kakaɖedzi le la, taflatse di Shandong Pulisi Chemical Co., Ltd., si léa fɔ ɖe “atike nyui” ŋu eye wòle dɔ wɔm ƒe 20 enye sia.