Puas yog cyanuric acid nce lossis qis pH?

Cov lus teb luv luv yog yog. Cyanuric acid yuav txo cov pH ntawm cov dej hauv pas dej.

Cyanuric acidyog cov kua qaub tiag tiag thiab pH ntawm 0.1% cyanuric acid tov yog 4.5. Nws tsis zoo li acidic heev thaum pH ntawm 0.1% sodium bisulfate tov yog 2.2 thiab pH ntawm 0.1% hydrochloric acid yog 1.6. Tab sis thov nco ntsoov tias pH ntawm cov pas dej da dej yog nyob nruab nrab ntawm 7.2 thiab 7.8 thiab thawj pKa ntawm cyanuric acid yog 6.88. Qhov no txhais tau hais tias feem ntau cyanuric acid molecules nyob rau hauv lub pas dej da dej tuaj yeem tso tawm hydrogen ion thiab lub peev xwm ntawm cyanuric acid kom qis pH yog ze heev rau sodium bisulfate uas feem ntau yog siv los ua pH reducer.

Piv txwv li:

Muaj lub pas dej da dej sab nraum zoov. Thawj pH ntawm dej pas dej ua ke yog 7.50, tag nrho alkalinity yog 120 ppm thaum lub cyanuric acid theem yog 10 ppm. Txhua yam nyob rau hauv kev txiav txim tsuas yog rau xoom cyanuric acid theem. Cia peb ntxiv 20 ppm ntawm qhuav cyanuric acid. Cyanuric acid maj mam yaj, feem ntau siv 2 mus rau 3 hnub. Thaum cyanuric acid tau yaj tag, pH ntawm cov dej hauv pas dej yuav yog 7.12 uas yog qis dua qhov pom zoo qis qis ntawm pH (7.20). 12 ppm ntawm sodium carbonate los yog 5 ppm ntawm sodium hydroxide yog xav tau ntxiv los kho cov teeb meem pH.

Monosodium cyanurate kua lossis slurry muaj nyob rau hauv qee lub khw muag khoom. 1 ppm monosodium cyanurate yuav nce cyanuric acid theem los ntawm 0.85 ppm. Monosodium cyanurate yog sai soluble hauv dej, yog li nws yooj yim dua los siv thiab tuaj yeem nce cyanuric acid sai hauv pas dej da dej. Contrary to cyanuric acid, monosodium cyanurate kua yog alkaline (pH ntawm 35% slurry yog nruab nrab ntawm 8.0 mus rau 8.5) thiab me ntsis nce pH ntawm dej pas dej ua ke. Hauv lub pas dej ua ke saum toj no, pH ntawm cov dej hauv pas dej yuav nce mus rau 7.68 tom qab ntxiv 23.5 ppm ntawm ntshiab monosodium cyanurate.

Tsis txhob hnov ​​qab tias cyanuric acid thiab monosodium cyanurate nyob rau hauv lub pas dej ua ke kuj ua raws li buffers. Qhov ntawd yog, qhov siab dua ntawm cyanuric acid, qhov tsis tshua muaj pH yuav ntws. Yog li thov nco ntsoov rov ntsuas tag nrho cov alkalinity thaum pH ntawm cov dej hauv pas dej yog xav tau los kho.

Tsis tas li ntawd nco ntsoov tias cyanuric acid yog qhov tsis muaj zog dua li sodium carbonate, yog li kev hloov kho pH yuav tsum tau ntxiv cov kua qaub lossis alkali ntau dua li tsis muaj cyanuric acid.

Rau lub pas dej da dej uas pH thawj zaug yog 7.2 thiab qhov xav tau pH yog 7.5, tag nrho alkalinity yog 120 ppm thaum lub cyanuric acid qib yog 0,7 ppm ntawm sodium carbonate yog xav tau kom tau raws li qhov xav tau pH. Khaws qhov pib pH, qhov xav tau pH thiab tag nrho cov alkalinity yog 120 ppm tsis hloov tab sis hloov cov cyanuric acid qib rau 50 ppm, 10 ppm ntawm sodium carbonate yog xav tau tam sim no.

Thaum pH yuav tsum tau txo qis, cyanuric acid muaj kev cuam tshuam tsawg dua. Rau lub pas dej da dej uas tus pH thawj yog 7.8 thiab qhov xav tau pH yog 7.5, tag nrho alkalinity yog 120 ppm thiab cyanuric acid theem yog 0,6.8 ppm ntawm sodium bisulfate yog xav tau kom tau raws li qhov xav tau pH. Khaws qhov pib pH, qhov xav tau pH thiab tag nrho cov alkalinity yog 120 ppm tsis hloov tab sis hloov cov cyanuric acid theem rau 50 ppm, 7.2 ppm ntawm sodium bisulfate yog xav tau - tsuas yog nce 6% ntawm cov tshuaj sodium bisulfate.

Cyanuric acid kuj muaj qhov zoo dua uas nws yuav tsis tsim cov nplai nrog calcium lossis lwm yam hlau.