Synthesis, characterization of cellulose acetate membrane and application for the treatment of oily wastewater

Shoba, B; Jeyanthi, J.; Vairam, S.

doi:10.1080/09593330.2018.1543353

Cited by 27 publications

(14 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Synthetic oily wastewater (SOWW) was prepared using the method described by Shoba, Jeyanthi and Vairam [ 43 ]. Vacuum pump oil was mixed with sodium dodecyl sulphate (90:1, v / w ) in 1 liter of water, sonicated for 5 min at an amplitude of 75% and cycle of 0.5 to obtain a homogenous solution.…”

Section: Methodsmentioning

confidence: 99%

“…Zhang et al [ 41 ] used 2 mol/L pyrrole, while 0.004 mol/L was used in this study. Also, all the literature studies reported here and almost all studies available in the literature were only concerned about how much oil the adsorbents were able to take up [ 16 , 19 , 30 , 36 , 41 , 42 , 43 ], but this study looked mostly at the quality of the adsorbent-treated water. Considering this, polypyrrole-silica composite is a promising adsorbent for oily wastewater treatment.…”

Section: Comparison To Other Adsorbentsmentioning

confidence: 99%

See 1 more Smart Citation

Response Surface Optimization of Oil Removal Using Synthesized Polypyrrole-Silica Polymer Composite

et al. 2020

View full text Add to dashboard Cite

The severity of oil pollution, brought about by improper management, increases daily with an increase in the exploration and usage of oil, especially with an increase in industrialization. Conventional oil treatment methods are either expensive or time consuming, hence the need for new technologies. The aim of this research is to synthesize polypyrrole-modified silica for the treatment of oily wastewater. Pyrrole was copolymerized with silica in the presence of ferric chloride hexahydrate by adding 23 mL of 117.4 g/dm3 ferric chloride hexahydrate drop wise to a silica-pyrrole mixture (1:2.3). The mixture was stirred for 24 h, filtered and dried at 60 °C for 24 h. The composite was then characterized using FTIR and SEM/EDX. A central composite model was developed in design expert software to describe the efficiency of oil removal using the polypyrrole-modified silica under the influence of initial oil concentration, adsorbent dosage and contact time. The synthesized adsorbent had FTIR bands at 3000–3500 cm−1 (due to the N-H), 1034 cm−1 (attributed to the Si-O of silica), 1607 cm−1 and 1615 cm−1 (due to the stretching vibration of C=C of pyrrole ring). The adsorption capacity values predicted by the central composite model were in good agreement with the actual experimental values, indicating that the model can be used to optimize the removal of oil from oily wastewater in the presence of polypyrrole-modified silica. The adsorbent showed excellent oil uptake when compared with similar materials. The optimum conditions for oil removal were 7091 mg/L oil concentration, 0.004 g adsorbent dosage and contact time of 16 h. Under these conditions, the percentage of oil adsorption was 99.3% and adsorption capacity was 8451 mg/g. As a result of the low optimum dosage and the lack of agitation, the material was found to be applicable in the remediation of field wastewater.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Comparison To Other Adsorbentsmentioning

confidence: 99%

Response Surface Optimization of Oil Removal Using Synthesized Polypyrrole-Silica Polymer Composite

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Synthetic oily wastewater (SOWW) was prepared using the method described by Shoba et al [33]. Vacuum pump oil was mixed with sodium dodecyl sulphate (90:1, v/w) in 1 L of water, sonicated for 5 min at an amplitude of 75% and cycle of 0.5 to obtain a homogenous solution.…”

Section: Preparation Of Synthetic Oily Wastewatermentioning

confidence: 99%

Application of synthesized acetylated silica in the remediation of oily wastewater

Izevbekhai

Gitari

Tavengwa

et al. 2020

Journal of Taibah University for Science

View full text Add to dashboard Cite

Acetylated materials have been applied successfully in oily water remediation with some degree of success. Many of these materials which have been acetylated are, however, from seasonal fruits and other plant parts. This work reports the successful acetylation of silica extracted from diatomaceous earth by refluxing silica and acetic anhydride using 1% N-bromosuccinimide as a catalyst. The functionalization was confirmed by the presence of absorption bands at 1406 cm −1 (C-O) and 1568 cm −1 (C = O) on an IR spectrum and the presence of C, Si, and increased amount of O on the EDX spectrum. The synthesized materials were applied in the optimization of the removal of oil from synthetic oily wastewater using response surface methodology giving a percentage oil removal of 99.7%. The optimum conditions for oil removal were as follows; 7867 mg/L oil concentration, with adsorbent dosage of 0.001 g and a duration of 21.6 h, and the adsorption capacity under these conditions was found to be 1039 mg/g. The outcomes proved that acetylated silica is an excellent material for oil adsorption and can therefore be used in oil spill clean-ups.

show abstract

“…Although cellulose acetate performed well in oil-water separation, Shoba et al [32] found that the membrane flux was low when the cellulose acetate concentration reached the optimal value of 17.5 wt%; thus, we looked for a new spinning method to prepare cellulose acetate membrane. Centrifugal fiber spinning can be considered as a promising alternative to traditional spinning technologies such as electrospinning and meltblown spinning.…”

Section: Introductionmentioning

confidence: 99%

Development of Janus Cellulose Acetate Fiber (CA) Membranes for Highly Efficient Oil–Water Separation

Zhang

Xing

et al. 2021

Materials

View full text Add to dashboard Cite

A new type of Janus cellulose acetate (CA) fiber membrane was used to separate oil–water emulsions, which was prepared with plasma gas phase grafting by polymerizing octamethylcyclotetrasiloxane (D4) onto a CA fiber membrane prepared by centrifugal spinning. The Janus–CA fiber membrane was described in terms of chemical structure using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) analysis, energy dispersive X-ray spectroscopy (EDX) analysis and morphology by field emission scanning electron microscopy (FESEM). In this contribution, we examine the influence of spinning solution concentration, spinning speed and nozzle aperture on the centrifugal spinning process and the fiber morphology. Superhydrophobic/hydrophilic Janus–CA fiber membrane was used to separate water and 1,2-dibromoethane mixture and Toluene-in-water emulsion. Unidirectional water transfer Janus–CA fiber membrane was used to separate n-hexane and water mixture. The separation for the first-time interception rate was about 98.81%, 98.76% and 98.73%, respectively. Experimental results revealed that the Janus cellulose acetate (CA) fiber membrane gave a permeate flux of about 43.32, 331.72 and 275.27 L/(m2·h), respectively. The novel Janus–CA fiber membrane can potentially be used for sustainable W/O emulsion separation. We believe that this is a facile strategy for construction of filtration materials for practical oil–water separation.

show abstract

Synthesis, characterization of cellulose acetate membrane and application for the treatment of oily wastewater

Cited by 27 publications

References 48 publications

Response Surface Optimization of Oil Removal Using Synthesized Polypyrrole-Silica Polymer Composite

Response Surface Optimization of Oil Removal Using Synthesized Polypyrrole-Silica Polymer Composite

Application of synthesized acetylated silica in the remediation of oily wastewater

Development of Janus Cellulose Acetate Fiber (CA) Membranes for Highly Efficient Oil–Water Separation

Contact Info

Product

Resources

About