Features of Ultrafiltration Purification of Waste Water from Sodium Lauryl Sulphate

A study of the process of ultrafiltration separation of a solution containing an anionic surfactant on membranes of different types: cellulose acetate and polysulfonamide was carried out. It was found that the material of the active layer of the composite membrane has a significant effect on the ultrafiltration separation of such solutions. High values of the retention coefficient during ultrafiltration separation of solutions containing anionic surfactants were obtained in dilute solutions.

Download Full-text

Preparation of Polymer Composite Membrane Reinforced by Natural Fibers (Fiber and Stem of Date Palm) for Treatment of Industrial Waste Water Residue

Theoretical Foundations of Chemical Engineering ◽

10.1134/s0040579520050267 ◽

2020 ◽

Vol 54 (5) ◽

pp. 961-972

Author(s):

Falak O. Abas ◽

Abdul Hameed M-J Al Obaidy ◽

Eman SH. Awad ◽

Athmar Abd M.

Keyword(s):

Waste Water ◽

Polymer Composite ◽

Composite Membrane ◽

Industrial Waste ◽

Date Palm ◽

Natural Fibers ◽

Industrial Waste Water ◽

Water Residue

Download Full-text

Effect of waste water treatment technology on the elimination of anionic surfactants

Waste Management ◽

10.1016/s0956-053x(99)00012-4 ◽

1999 ◽

Vol 19 (2) ◽

pp. 125-131 ◽

Cited By ~ 18

Author(s):

F.R Schröder ◽

M Schmitt ◽

U Reichensperger

Keyword(s):

Waste Water ◽

Water Treatment ◽

Anionic Surfactants ◽

Waste Water Treatment ◽

Treatment Technology ◽

Water Treatment Technology

Download Full-text

Properties and applications of cellulose regenerated from cellulose/imidazolium-based ionic liquid/co-solvent solutions: A short review

e-Polymers ◽

10.1515/epoly-2021-0086 ◽

2021 ◽

Vol 21 (1) ◽

pp. 869-880

Author(s):

Ahmad Adlie Shamsuri ◽

Khalina Abdan ◽

Siti Nurul Ain Md. Jamil

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Cellulose Acetate ◽

Processing Time ◽

Short Review ◽

Organic Liquids ◽

Regenerated Cellulose ◽

Solvent Mixtures ◽

Different Types ◽

Novel Applications

Abstract An improvement of ecological conscience currently has increased the consciousness of researchers in reducing the processing time and cost of solvent for the dissolution of cellulose. Latterly, ionic liquids have been employed to process cellulose as they are recyclable and nonvolatile. Besides that, biopolymers such as chitosan, chitin, starch, protein, and cellulose acetate can also be processed by using ionic liquids for diverse applications. In this short review, examples of imidazolium-based ionic liquids that are commonly used for the dissolution of cellulose are implied. Furthermore, examples of organic liquids that are utilized as co-solvents for ionic liquids were revealed. In addition, examples of imidazolium-based ionic liquid/co-solvent mixtures utilized in the dissolution of cellulose and other biopolymers are also demonstrated. The properties and applications of cellulose and its blends regenerated from different types of cellulose/imidazolium-based ionic liquid/co-solvent solutions are also shortly reviewed. The information acquired from this review gives a better understanding of the changes in the properties of regenerated cellulose and regenerated cellulose blends. In addition, this short review serves as a model basis for the creation of novel applications of regenerated cellulose and regenerated cellulose blends by utilizing imidazolium-based ionic liquid/co-solvent mixtures.

Download Full-text

Thin Film Nanofibrous Composite Membrane for Dead-End Seawater Desalination

Journal of Nanomaterials ◽

10.1155/2016/2694373 ◽

2016 ◽

Vol 2016 ◽

pp. 1-12 ◽

Cited By ~ 7

Author(s):

Baturalp Yalcinkaya ◽

Fatma Yalcinkaya ◽

Jiri Chaloupek

Keyword(s):

Thin Film ◽

Active Layer ◽

Composite Membrane ◽

Interfacial Polymerization ◽

Composite Membranes ◽

Nanofibrous Scaffold ◽

Filtration Method ◽

Salt Ions ◽

Dead End ◽

Supporting Material

The aim of the study was to prepare a thin film nanofibrous composite membrane utilized for nanofiltration technologies. The composite membrane consists of a three-layer system including a nonwoven part as the supporting material, a nanofibrous scaffold as the porous surface, and an active layer. The nonwoven part and the nanofibrous scaffold were laminated together to improve the mechanical properties of the complete membrane. Active layer formations were done successfully via interfacial polymerization. A filtration test was carried out using solutions of MgSO4, NaCl, Na2SO4, CaCl2, and real seawater using the dead-end filtration method. The results indicated that the piperazine-based membrane exhibited higher rejection of divalent salt ions (>98%) with high flux. In addition, them-phenylenediamine-based membrane exhibited higher rejection of divalent and monovalent salt ions (>98% divalent and >96% monovalent) with reasonable flux. The desalination of real seawater results showed that thin film nanofibrous composite membranes were able to retain 98% of salt ions from highly saline seawater without showing any fouling. The electrospun nanofibrous materials proved to be an alternative functional supporting material instead of the polymeric phase-inverted support layer in liquid filtration.

Download Full-text