Puas yog cyanuric acid nce lossis txo pH?

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

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

Piv txwv li:

Muaj ib lub pas dej ua luam dej sab nraum zoov. Lub pH pib ntawm cov dej hauv pas dej yog 7.50, tag nrho cov alkalinity yog 120 ppm thaum cov cyanuric acid theem yog 10 ppm. Txhua yam ua haujlwm zoo tsuas yog xoom cyanuric acid theem xwb. Cia peb ntxiv 20 ppm ntawm cov cyanuric acid qhuav. Cyanuric acid maj mam yaj, feem ntau siv sijhawm 2 txog 3 hnub. Thaum cyanuric acid yaj tag, pH ntawm cov dej hauv pas dej yuav yog 7.12 uas qis dua qhov kev txwv qis tshaj plaws ntawm pH (7.20). Yuav tsum ntxiv 12 ppm ntawm sodium carbonate lossis 5 ppm ntawm sodium hydroxide kom kho qhov teeb meem pH.

Cov kua Monosodium cyanurate los yog slurry muaj nyob rau hauv qee lub khw muag khoom siv ua luam dej. 1 ppm monosodium cyanurate yuav ua rau cov cyanuric acid nce ntxiv 0.85 ppm. Monosodium cyanurate yaj sai hauv dej, yog li nws yooj yim dua rau siv thiab tuaj yeem ua rau cov cyanuric acid nce ntxiv sai hauv pas dej ua luam dej. Tsis zoo li cyanuric acid, cov kua monosodium cyanurate yog alkaline (pH ntawm 35% slurry yog ntawm 8.0 txog 8.5) thiab ua rau cov pH ntawm cov dej pas dej nce me ntsis. Hauv pas dej ua luam dej uas tau hais los saum toj no, cov pH ntawm cov dej pas dej yuav nce mus txog 7.68 tom qab ntxiv 23.5 ppm ntawm monosodium cyanurate ntshiab.

Tsis txhob hnov ​​qab tias cyanuric acid thiab monosodium cyanurate hauv dej pas dej kuj ua haujlwm ua cov buffers. Qhov ntawd yog, qhov siab dua ntawm cyanuric acid, qhov tsawg dua qhov pH yuav poob. Yog li thov nco ntsoov rov sim dua qhov alkalinity tag nrho thaum pH ntawm dej pas dej xav tau los kho.

Tsis tas li ntawd, nco ntsoov tias cyanuric acid yog ib qho buffer muaj zog dua li sodium carbonate, yog li kev kho pH yuav tsum tau ntxiv ntau acid lossis alkali dua li tsis muaj cyanuric acid.

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

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

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