Micellar-enhanced ultrafiltration of dairy wastewater with anionic and nonionic surfactants

Abstract

To cite this article: Hossein Jalaei salmani (2015): Micellar-enhanced ultrafiltration of dairy wastewater with anionic and nonionic surfactants, Desalination and Water Treatment, In this study, the potential of MEUF process has been analyzed to treat a real dairy wastewater. For this purpose, linear alkylbenzene sulfonate (LAS) and Triton X-100 (TX-100) have been used as anionic and nonionic surfactants, respectively. The ranges of 23.5 bars and 0-4 mM are selected for transmembrane pressure (TMP) and surfactants concentration, respectively, to investigate their effects on the permeate flux as a function of operating time. Moreover, it is revealed experimentally that rejection of pollution indices including chemical oxygen demand (COD) and total dissolved solid (TDS) is affected by TMP and feed surfactant concentration, while turbidity is remained relatively unchanged. According to the experimental results analysis, the increase of feed surfactant concentration has negative and positive effects on the permeate flux and rejection efficiency, respectively. TMP enhancement also leads to the higher flux values but it does not necessarily improve the rejection. Furthermore, the effectiveness of anionic surfactant in pollution indices elimination is more than the nonionic one. In the treatment combination assessed for the factors, the best rejection values of COD, TDS, and turbidity using LAS surfactant with polyacrylonitrile (PAN-350) 20-kDa poly(ethylene glycol) membrane are almost 93, 52, and 99.9%, respectively.

Impact of Tween‐80 and Deep Eutectic Solvent‐Based Micellar‐Enhanced Ultrafiltration in Dairy Wastewater Treatment

“…Membrane technology comprises pressure-driven processes such as reverse osmosis (RO), nanofiltration (NF), ultrafiltration (UF), and microfiltration (MF) for the purification of organic and inorganic effluents. The utilization of RO and NF methods has been limited due to the requirements of high pressure and pretreatment of the effluent, whereas the UF process involves low operating pressures and low energy consumption [15,16].…”