Removal of iron and manganese from aqueous solutions using carbon nanotube filtersстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 7 июля 2021 г.
Аннотация:Carbon nanotubes (CNTs) have become the focus of attention of many scientists and companies
worldwide. CNT-based filters have a prospective advantage in comparison to the commercial filters
already in operation because they are light weight and do not require electricity to operate. This
investigation handles the filtration efficiency of manganese and iron from aqueous solution using
commercial multiwalled carbon nanotubes (MWCNTs) (Taunit). The effects of different parameters
such as CNT filter mass, concentration of manganese and iron in aqueous solution and pH of
aqueous solution on removal of these heavy metals are determined. From these investigations, the
removal efficiency of manganese and iron could reach 71.5% and 52% respectively for concentration
50 ppm, suggesting that Taunit is an excellent adsorbent for manganese and iron removal from
water. There was a significant increase in removal efficiency at pH¼3 for manganese and pH¼8 for
iron. The effect of oxidation on the structural of MWCNTs was characterized by scanning electron
microscope (SEM) and energy dispersive spectroscopy (EDS) techniques to investigate the
functionalization with oxygen-containing and outer diameter distribution. It was found that
functionalized CNT-based filters are more efficient at removing manganese and iron from aqueous
solutions. Oxidized MWCNTs may be a promising candidate for heavy metal ion removal from
industrial wastewater.