Arsēna savienojumu sorbcijas izpēte uz sintētiskiem un modificētas kūdras sorbentiem

6533b85bfe1ef96bd12ba44c

RESEARCH PRODUCT

Arsēna savienojumu sorbcijas izpēte uz sintētiskiem un modificētas kūdras sorbentiem

Linda Ansone-bērtiņa

subject

description

Arsēna savienojumu sorbcijai sintezēti ar dzelzi modificēti kūdras sorbenti, dzelzs humāti, ar dzelzi modificēts sulfokatjonīts, ar polietilēnimīnu modificēts hlormetilēts stirola-divinilbenzola koppolimērs, ar hitozānu modificēta kūdra un kūdras graftpolimērs. Pētīta arsēna savienojumu sorbcija, izmantojot purva kūdru, sintezētos sorbentus, kā arī rūpnieciski ražotu sorbentu un imobilizētās humusvielas. Visefektīvākais sorbents arsēna savienojumu saistīšanai ir ar dzelzs savienojumiem modificēta kūdra. Arsēna savienojumu sorbcija uz ar dzelzi modificētiem sorbentiem, kā arī, izmantojot rūpnieciski ražoto sorbentu, pētīta atkarībā no šķīduma pH un temperatūras. Sorbcija pie dažādām šķīduma pH vērtībām ir atkarīga no arsēna jonu formas šķīdumā. Konstatēts, ka, palielinoties temperatūrai, palielinās sorbcijas kapacitāte. Aprēķinātie termodinamiskie parametri norāda, ka sorbcijas process ir spontāns un tas ir endotermisks.

year	journal	country	edition	language
2011-01-01

https://dspace.lu.lv/dspace/handle/7/18883

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