Adsorption of CECs in the nanofiltration process

Autor:	Tse Jung Liu, E. E. Chang, Pen-Chi Chiang
Rok vydání:	2014
Předmět:	chemistry.chemical_classification Suspended solids Chromatography Chemistry Natural water Ocean Engineering Pollution Natural organic matter law.invention Membrane Adsorption law Humic acid Nanofiltration Filtration Water Science and Technology Nuclear chemistry
Zdroj:	Desalination and Water Treatment. 54:2658-2668
ISSN:	1944-3986 1944-3994
DOI:	10.1080/19443994.2014.903868
Popis:	Adsorption is one of the main mechanisms of compounds of emerging concerns (CECs) rejection by a membrane process. CECs could be adsorbed not only by membrane but also by suspended solid during membrane filtration. In this study, the adsorption of five CECs by natural organic matter (NOM) and NF270 was investigated by using 96-h bottle and batch tests at 25°C, respectively. Humic acid (HA), which is the major ingredient of NOM, was added into Milli-Q water as NOM to simulate the natural water. HA added into the solution was found insolubility at pH 7 in this study. Adsorption of CECs by HA was strongly correlated with log Kow of compound. Adsorption capacity was observed to be maximum with HA followed by NF. The study also found that the removal efficiency of CECs by NF could be affected by NOM present in the water. Micro-pollutants, such as CECs, could be adsorbed by HA and then be removed easily during the membrane filtration. Moderate existence of HA would be contributive for CECs removal, but ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9c3c3ea71e0611db5672634b1789664b https://doi.org/10.1080/19443994.2014.903868 Zobrazit plný text záznamu