Sulfate removal from drinking water by commercially available nanofiltration membranes: A parametric study

Date

2020-01-01

Author

Karabacak, Aslı
Dilek, Filiz Bengü
Yılmaz, Levent
KİTİŞ, Mehmet
Yetiş, Ülkü

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

276
views

0
downloads

© 2020 Desalination Publications. All rights reserved.The efficacy of nanofiltration (NF) in removing sulfate from a high sulfate content (370–460 mg/L) surface water was investigated. NF tests were carried out using a laboratory-scale cross-flow NF module operated in total-recycle (full-recycle) mode. Membranes of varying characteristics; namely, DK-NF (Desal DK: GE Osmonics, USA), DL-NF (Desal DL: GE Osmonics, USA), and NF270 (Dow Filmtec Co., USA) were tested, and the effects of main operational parameters of cross-flow veloc-ity, trans-membrane pressure, and pretreatment on permeate flux and sulfate removal were evalu-ated. The NF270 membrane exhibited the highest permeate flux and was found to be the best of the three membranes tested, with over 98% sulfate removal. The DK-NF membrane, which was poor in performance with a high flux decline, provided the lowest sulfate removal, lowest permeate flux, and highest fouling. Microfiltration (2.5-µm), as pretreatment, provided no considerable improvement in permeate flux. When the effects of operational parameters on NF performance using the DL-NF membrane were sought, it appeared that permeate flux, and sulfate removal efficiency did not change at all with trans-membrane pressure and cross-flow velocity. The study is expected to provide useful information about the NF of drinking water with high sulfate content in the future.

URI

https://hdl.handle.net/11511/70023

Journal

Desalination and Water Treatment

DOI

https://doi.org/10.5004/dwt.2020.26398

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Spatio-temporal distribution of picophytoplankton (Pico-eukaryotes, Synechococcus and Prochlorococcus) abundance in the northeastern mediterranean Kilic, Ece; Uysal, Zahit; Tugrul, Suleyman; Yucel, Nebil (2020-07-01) © 2020 Parlar Scientific Publications. All rights reserved.Primary productivity mostly relies on marine cyanobacteria in the oligotrophic north-eastern Mediterranean (NEM). However, wide shelf basin is fed by nutrient-rich rivers (namely Goksu, Lamas, Seyhan, Ceyhan, Asi) leading to apparent increase in algal production at coastal regions. In the present study, variation of picophytoplankton (pico-eukaryotes, Synechococcus and Prochlorococcus) abundance of at different trophic levels of NEM were investigate...
Evaluation of ecological changes in lake hazar (Elazig, Turkey) using diatom-based paleolimnological techniques Maraslioglu, Faruk; Soylu, Elif Neyran; Avşar, Ulaş; Hubert-Ferrari, Aurelia (2020-12-01) © 2020 Parlar Scientific Publications. All rights reserved.Sediment core samples (H002, H003, H005 and H006) recovered from the basin of Lake Hazar located in the South East Region of Turkey. Core sam¬ ples were collected from the four sampling stations by UWITEC corer to determine diatom flora distri¬ bution in Lake Hazar. Diatom counts and identifica¬ tions were made from the sediments sampled at 1-2 cm intervals. Total of 142 species of diatoms were recorded, most of them were pennate diatoms. Ulnaria ul...
Plasmonic light-management interfaces by polyol-synthesized silver nanoparticles for industrial scale silicon solar cells Birant, Gizem; Öztürk, İbrahim Murat; Doğanay, Doğa; Ünalan, Hüsnü Emrah; Bek, Alpan (2020-01-01) © 2020 American Chemical Society. All rights reserved.Plasmonic interfaces are used as an alternative and highly effective light management technique for solar cells. Topdown approaches produce well-ordered and carefully designed plasmonic structures for tailor-made light management; however, they are costly, and their fabrication is time-consuming. Thus, their utilization for industrial-scale solar cells is not trivial. It has been shown that dewetting is a cost- and time-effective bottom-up approach for t...
Transcriptome analysis of the effects of light and dark cycle on hydrogen production metabolism of Rhodobacter capsulatus DSM1710 Gürgan, Muazzez; Koku, Harun; Eroglu, Inci; Yücel, Meral (Elsevier BV, 2020-01-01) © 2020 Hydrogen Energy Publications LLCPhotosynthetic purple non sulfur bacteria can be utilized in outdoor photobioreactors for sustainable large-scale biohydrogen production. However, the diurnal cycle under natural outdoor conditions affects hydrogen productivity and yield. Here, we investigated the effect of light and dark cycles on the hydrogen production metabolism of Rhodobacter capsulatus DSM1710 using custom-designed Affymetrix Gene Chip technology. R. capsulatus was grown by cyclic illumination on...
Thermal radiation transport in a fluidized dry water system Taylan, Onur; Berberoglu, Halil (2013-05-01) This paper reports a numerical study on thermal radiation transport in a novel material called dry water. Dry water is a water-in-air inverse foam which consists of micrometer-sized water droplets encapsulated by hydrophobic fumed-silica nanoparticles. First, the size distribution of dry water was measured using a particle size analyzer. Then, the radiation characteristics of dry water were obtained using the Mie theory for coated spheres. One-dimensional, steady radiative transport in fluidized dry water s...

Citation Formats

A. Karabacak, F. B. Dilek, L. Yılmaz, M. KİTİŞ, and Ü. Yetiş, “Sulfate removal from drinking water by commercially available nanofiltration membranes: A parametric study,” Desalination and Water Treatment, pp. 296–307, 2020, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70023.