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Wyświetlanie 1-2 z 2
Tytuł:
Effects of persulfate, peroxide activated persulfate and permanganate oxidation on treatability and biodegradability of leachate nanofiltration concentrate
Autorzy:
Guvenc, Senem Yazici
Varank, Gamze
Demir, Ahmet
Tematy:
COD
nanofiltration
NF
ChZT
nanofiltracja
Pokaż więcej
Data publikacji:
2021
Powiązania:
https://bibliotekanauki.pl/articles/2032960.pdf  Link otwiera się w nowym oknie
Źródło:
Environment Protection Engineering; 2020, 46, 3; 97-108
0324-8828
Pojawia się w:
Environment Protection Engineering
Opis:
The effects of persulfate (PS), peroxide activated persulfate (P-PS) and permanganate (PM) oxidation processes on leachate nanofiltration (NF) concentrate treatment have been activated. Additionally, COD fractions were determined and compared before and after each oxidation process. The total COD removal efficiencies by the oxidation processes using PS, P-PS, and PM as the oxidants were determined to be 24.5%, 32.9%, and 39.5%, respectively. The biodegradable COD fraction increased from 6.37% to 9.25%, 11.51%, and 13.64% after the PS, P-PS, and PM oxidation processes, respectively. About 25%, 34%, and 46% removal efficiencies of the inert COD content of the concentrate were obtained after the PS, P-PS and PM oxidation processes, and the soluble COD fraction increased from 71.1% to 87.2%, 89.0% and 84.6% by the PS, P-PS and PM oxidation processes, respectively. Although the highest removal efficiencies were achieved by PM oxidation with the lowest operational cost, all of the processes may be suggested as efficient methods for conversion of insoluble COD into the soluble COD fraction and for inert COD removal. The results of the study showed that the PS, P-PS, and PM oxidation processes may be effectively utilized as post-treatment techniques for leachate NF concentrate treatment.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance evaluation of nanofiltration membranes for dye removal of synthetic hand-drawn batik industry wastewater
Autorzy:
Desiriani, Ria
Susanto, Heru
Aryanti, Nita
Tematy:
COD
water filtration
nanofiltration
NF
batik industry
ChZT
filtracja wody
nanofiltracja
batik przemysłowy
Pokaż więcej
Data publikacji:
2022
Powiązania:
https://bibliotekanauki.pl/articles/2057617.pdf  Link otwiera się w nowym oknie
Źródło:
Environment Protection Engineering; 2022, 48, 1; 51--68
0324-8828
Pojawia się w:
Environment Protection Engineering
Opis:
This study evaluated the performance of nanofiltration (NF) membrane for the treatment of hand-drawn batik wastewater containing synthetic dyes as well as real batik wastewater. Three commercial NF membranes (NF270, TS40 and XN45) were used. The effect of transmembrane pressure, NF membrane types, synthetic dyes concentration, and solution types on flux and rejection were investigated. The results showed that the use of all NF membranes could reach dye removal of ca. 99%. NF270 membrane exhibited the highest flux, 2–3 times higher than that of TS40 and XN45 membranes. NF270 membrane was further used for treating real batik wastewater. The results showed high rejections in terms of total suspended solids (TSS), chemical oxygen demand (COD), and total dissolved solids (TDS) were obtained. The practical applicability of NF270 membrane for real handdrawn batik wastewater treatment fulfilled the quality standards in terms of TSS, COD, and BOD parameters. Overall, the NF270 membrane showed favorable performance for batik effluent treatment.
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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