Kodi cyanuric acid imakweza kapena kuchepetsa pH?

Yankho lalifupi ndi lakuti inde. Asidi wa cyanuric amachepetsa pH ya madzi a m'dziwe.

Asidi wa cyanuricndi asidi weniweni ndipo pH ya yankho la 0.1% cyanuric acid ndi 4.5. Sizikuwoneka kuti ndi asidi wambiri pomwe pH ya yankho la 0.1% sodium bisulfate ndi 2.2 ndipo pH ya 0.1% hydrochloric acid ndi 1.6. Koma chonde dziwani kuti pH ya maiwe osambira ili pakati pa 7.2 ndi 7.8 ndipo pKa yoyamba ya cyanuric acid ndi 6.88. Izi zikutanthauza kuti mamolekyu ambiri a cyanuric acid mu dziwe losambira amatha kutulutsa ayoni ya hydrogen ndipo kuthekera kwa cyanuric acid kuchepetsa pH kuli pafupi kwambiri ndi kwa sodium bisulfate yomwe nthawi zambiri imagwiritsidwa ntchito ngati chochepetsera pH.

Mwachitsanzo:

Pali dziwe losambira lakunja. pH yoyamba ya madzi a dziwe ndi 7.50, alkalinity yonse ndi 120 ppm pomwe mulingo wa cyanuric acid ndi 10 ppm. Chilichonse chikugwira ntchito kupatula mulingo wa zero cyanuric acid. Tiyeni tiwonjezere 20 ppm ya cyanuric acid youma. Cyanuric acid imasungunuka pang'onopang'ono, nthawi zambiri imatenga masiku awiri mpaka atatu. Cyanuric acid ikasungunuka kwathunthu, pH ya madzi a dziwe idzakhala 7.12 yomwe ndi yotsika kuposa malire otsika a pH (7.20). 12 ppm ya sodium carbonate kapena 5 ppm ya sodium hydroxide imafunika kuti muwonjezere kuti mukonze vuto la pH.

Madzi a monosodium cyanurate kapena slurry amapezeka m'masitolo ena a dziwe losambira. 1 ppm monosodium cyanurate imawonjezera kuchuluka kwa cyanuric acid ndi 0.85 ppm. Monosodium cyanurate imasungunuka mwachangu m'madzi, kotero ndi yosavuta kugwiritsa ntchito ndipo imatha kuwonjezera kuchuluka kwa cyanuric acid m'dziwe losambira. Mosiyana ndi cyanuric acid, madzi a monosodium cyanurate ndi amchere (pH ya 35% slurry ndi pakati pa 8.0 mpaka 8.5) ndipo imawonjezera pang'ono pH ya madzi a dziwe. Mu dziwe lomwe latchulidwa pamwambapa, pH ya madzi a dziwe imakwera kufika pa 7.68 mutawonjezera 23.5 ppm ya monosodium cyanurate yoyera.

Musaiwale kuti cyanuric acid ndi monosodium cyanurate m'madzi a dziwe zimathandizanso ngati zotetezera. Izi zikutanthauza kuti, cyanuric acid ikachuluka, pH sidzayenda bwino. Chifukwa chake kumbukirani kuyesanso alkalinity yonse pamene pH ya madzi a dziwe ikufunika kuti isinthe.

Dziwaninso kuti cyanuric acid ndi chotetezera champhamvu kuposa sodium carbonate, kotero kusintha pH kumafuna kuwonjezera asidi kapena alkali wambiri kuposa wopanda cyanuric acid.

Pa dziwe losambira lomwe pH yoyambirira ndi 7.2 ndipo pH yofunidwa ndi 7.5, alkalinity yonse ndi 120 ppm pomwe mulingo wa cyanuric acid ndi 0, 7 ppm wa sodium carbonate umafunika kuti ukwaniritse pH yofunidwa. Sungani pH yoyambirira, pH yofunidwa ndi alkalinity yonse ndi 120 ppm osasintha koma sinthani mulingo wa cyanuric acid kukhala 50 ppm, 10 ppm wa sodium carbonate ukufunika tsopano.

Ngati pH ikufunika kuchepetsedwa, cyanuric acid imakhala yochepa. Pa dziwe losambira lomwe pH yoyamba ndi 7.8 ndipo pH yofunidwa ndi 7.5, alkalinity yonse ndi 120 ppm ndipo cyanuric acid mulingo ndi 0, 6.8 ppm ya sodium bisulfate imafunika kuti ikwaniritse pH yofunidwa. Sungani pH yoyambirira, pH yofunidwa ndi alkalinity yonse ndi 120 ppm osasintha koma sinthani cyanuric acid kukhala 50 ppm, 7.2 ppm ya sodium bisulfate ikufunika - kuwonjezeka kwa 6% kokha kwa mlingo wa sodium bisulfate.

Asidi ya cyanuric ilinso ndi ubwino wakuti sipanga mamba ndi calcium kapena zitsulo zina.