Comparison of ALD coated nanofiltration membranes to unmodified commercial membranes in mine wastewater treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F18%3A00113790" target="_blank" >RIV/00216224:14310/18:00113790 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S138358661731732X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S138358661731732X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2017.09.005" target="_blank" >10.1016/j.seppur.2017.09.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of ALD coated nanofiltration membranes to unmodified commercial membranes in mine wastewater treatment

Popis výsledku v původním jazyce

In this study, commercial nanofiltration (NF270 and NF90, Dow Filmtec) and zinc oxide (ZnO) coated NF270 nanofiltration membranes prepared by atomic layer deposition (ALD) were applied to the purification of mine wastewaters. The characteristics of the coated nanofiltration membranes were evaluated with contact angle, roughness and zeta-potential analyses. Membrane wearing was also studied from microscopic pictures. The waters used were purified process water and mildly contaminated wastewaters from mine sites. The target compounds were sulphate, manganese, nitrate and chloride, the removal efficiencies of which were studied. In addition, membrane fouling was under interest. It was observed that the flux recovery ratio (FRR) after the experiment was 73-85% and 83-93% with the original and the coated membranes, respectively. The relative flux was slightly increased with the coated membrane when testing the membrane efficiency with three different wastewaters. The ZnO layer on the active membrane surface reduced the reversible fouling of the NF270 membrane. Ion removal efficiencies of the coated membranes were in the same level with the uncoated membrane, i.e. removal efficiencies were high.

Název v anglickém jazyce

Comparison of ALD coated nanofiltration membranes to unmodified commercial membranes in mine wastewater treatment

Popis výsledku anglicky

In this study, commercial nanofiltration (NF270 and NF90, Dow Filmtec) and zinc oxide (ZnO) coated NF270 nanofiltration membranes prepared by atomic layer deposition (ALD) were applied to the purification of mine wastewaters. The characteristics of the coated nanofiltration membranes were evaluated with contact angle, roughness and zeta-potential analyses. Membrane wearing was also studied from microscopic pictures. The waters used were purified process water and mildly contaminated wastewaters from mine sites. The target compounds were sulphate, manganese, nitrate and chloride, the removal efficiencies of which were studied. In addition, membrane fouling was under interest. It was observed that the flux recovery ratio (FRR) after the experiment was 73-85% and 83-93% with the original and the coated membranes, respectively. The relative flux was slightly increased with the coated membrane when testing the membrane efficiency with three different wastewaters. The ZnO layer on the active membrane surface reduced the reversible fouling of the NF270 membrane. Ion removal efficiencies of the coated membranes were in the same level with the uncoated membrane, i.e. removal efficiencies were high.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SEPARATION AND PURIFICATION TECHNOLOGY

ISSN

1383-5866

e-ISSN

1873-3794

Svazek periodika

192

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

69-77

Kód UT WoS článku

000418212500010

EID výsledku v databázi Scopus

2-s2.0-85030845646