Transport of vanadium(V) through a tricaprylylmethylammonium solid supported liquid membrane from aqueous acetic acid/acetate solutions

1995 ◽  
Vol 98 (3) ◽  
pp. 241-248 ◽  
Author(s):  
Cristina Palet ◽  
Maria Muñoz ◽  
Manuela Hidalgo ◽  
Manuel Valiente
Keyword(s):  
Acetic Acid ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Aqueous Acetic Acid ◽  
Acetic Acid Acetate

scholarly journals Effect of coagulation bath temperature during preparation of PES hollow fiber supported liquid membrane for acetic acid removal

2017 ◽  
Vol 19 ◽  
pp. 118 ◽  
Author(s):  
Sathiya Sanmugam ◽  
Norlisa Harruddin ◽  
Syed M Saufi
Keyword(s):  
Aqueous Solution ◽  
Acetic Acid ◽  
Hollow Fiber ◽  
Liquid Membrane ◽  
Hollow Fiber Membrane ◽  
Bath Temperature ◽  
Supported Liquid Membrane ◽  
Coagulation Bath ◽  
Fiber Membrane ◽  
Coagulation Bath Temperature

<p>Acetic acid is a byproduct of acid hydrolysis of biomass during sugar recovery step in biofuel production. Acetic acid can inhibit the enzyme used during fermentation of sugar to the ethanol. Hollow fiber supported liquid membrane (SLM) was used in this study to remove acetic acid from aqueous solution. Liquid membrane was formulated using trioctylamine and 2-ethyl hexanol as a carrier and solvent, respectively. The hollow fiber membrane support was prepared from 15 wt.% polyethersulfone, 42.5 wt.% polyethyleneglycol 200 and 42.5 wt.% dimethylacetamide. The effect of coagulation bath temperature (CBT) at 30<sup>º</sup>C, 40<sup>º</sup>C and 50<sup>º</sup>C during hollow fiber membrane spinning process was investigated. The porosity of the membrane increased as the CBT increased. The porosity of the membrane prepared using CBT of 30ºC, 40<sup>º</sup>C and 50<sup>º</sup>C were 35.7%, 46.7% and 61.6%, respectively. SLM process using hollow fiber membrane prepared at 50ºC of coagulation bath was able to remove 52% of acetic acid from the aqueous solution.</p><p>Chemical Engineering Research Bulletin 19(2017) 118-122</p>

scholarly journals Supported Liquid Membrane Using Hybrid Polyethersulfone/Graphene Flat Sheet Membrane for Acetic Acid Removal

2017 ◽  
Vol 28 (Suppl. 1) ◽  
pp. 111-120 ◽  
Author(s):  
Norlisa Harruddin ◽  
◽  
Syed M. Saufi ◽  
Che Ku M. Faizal ◽  
Abdul Wahab Mohammad ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Flat Sheet ◽  
Flat Sheet Membrane ◽  
Sheet Membrane

scholarly journals Advancing understanding of actinide(iii) (Ac, Am, Cm) aqueous complexation chemistry

2021 ◽  
Vol 12 (15) ◽  
pp. 5638-5654
Author(s):  
Zachary R. Jones ◽  
Maksim Y. Livshits ◽  
Frankie D. White ◽  
Elodie Dalodière ◽  
Maryline G. Ferrier ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Optical Spectroscopy ◽  
Aqueous Acetic Acid ◽  
Acetate Concentration ◽  
X Ray ◽  
Aqueous Complexation ◽  
X Ray Absorption ◽  
Water Ligands ◽  
Complexation Chemistry ◽  
Acetic Acid Acetate

Actinide complexation from aqueous acetic acid/acetate buffered solutions is described. The number of water ligands was directly correlated with the acetate concentration and characterized by X-ray absorption and optical spectroscopy.

EVALUATION OF DIFFERENT POLYMERIC MEMBRANE SUPPORT FOR ACETIC ACID REMOVAL BY SUPPORTED LIQUID MEMBRANE PROCESS

2016 ◽  
Vol 78 (12) ◽  
Author(s):  
Norlisa Harruddin ◽  
Syed M. Saufi ◽  
Che Ku M. Faizal ◽  
Abdul Wahab Mohammad
Keyword(s):  
Acetic Acid ◽  
Fermentation Process ◽  
Liquid Membrane ◽  
Porous Membrane ◽  
Supported Liquid Membrane ◽  
Polymeric Membrane ◽  
Membrane Process ◽  
Pvdf Membrane ◽  
Membrane Morphology ◽  
Biomass Resources

In this study, the removal of acetic acid from aqueous solution through supported liquid membrane (SLM) process by using tri-n-octylamine (TOA) as a carrier and sodium hydroxide as a stripping agent was conducted. Acetic acid can inhibit the microbial activity during fermentation process of biomass hydrolysate, thus decreasing the bioethanol production. It is crucial to remove acetic acid prior to fermentation process in order to increase the yield of bioethanol from biomass resources. In this study, the removal of acetic acid was conducted using different types of polymeric membrane in supported liquid membrane process. Three types of polymeric membranes support which are polyethersulfone (PES), polysulfone (PSF) and polyvinyflouride (PVDF) prepared by vapour induced phase separation (VIPS) were used as a support material. The types of polymer give a significant effect on membrane morphology and its physical characteristics. PES exhibited a porous membrane support with a symmetric structure and high contact angle. Almost 86% of 10 g/l of acetic acid was successfully removed by using PES as a support membrane, compared to the 6% and 38% removal using PSF and PVDF membrane, respectively.

scholarly journals Effect of VIPS fabrication parameters on the removal of acetic acid by supported liquid membrane using a PES–graphene membrane support

RSC Advances ◽  
2018 ◽  
Vol 8 (45) ◽  
pp. 25396-25408 ◽  
Author(s):  
Norlisa Harruddin ◽  
Syed M. Saufi ◽  
Che Ku M. Faizal ◽  
Abdul Wahab Mohammad
Keyword(s):  
Acetic Acid ◽  
Phase Separation ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Graphene Membrane ◽  
Fabrication Parameters

In this study, the removal of acetic acid by supported liquid membrane (SLM) using hybrid polyethersulfone (PES)–graphene membrane prepared by vapor induced phase separation (VIPS) was investigated.

Novel Compound from Flowers of Moringa oleifera Active Against Multi- Drug Resistant Gram-negative Bacilli

2020 ◽  
Vol 20 (1) ◽  
pp. 69-75
Author(s):  
Santi M. Mandal ◽  
Subhanil Chakraborty ◽  
Santanu Sahoo ◽  
Smritikona Pyne ◽  
Samaresh Ghosh ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Moringa Oleifera ◽  
Aqueous Acetic Acid ◽  
Phytochemical Analysis ◽  
Hydroxyl Groups ◽  
Drug Resistant ◽  
Gram Negative ◽  
Isolated Compound ◽  
Conventional Antibiotics

Background: The need for suitable antibacterial agents effective against Multi-drug resistant Gram-negative bacteria is acknowledged globally. The present study was designed to evaluate the possible antibacterial potential of an extracted compound from edible flowers of Moringa oleifera. Methods: Five different solvents were used for preparing dried flower extracts. The most effective extract was subjected to fractionation and further isolation of the active compound with the highest antibacterial effect was obtained using TLC, Column Chromatography and reverse phase- HPLC. Approaches were made for characterization of the isolated compound using FTIR, NMR and Mass spectrometry. Antibacterial activity was evaluated according to the CLSI guidelines. Results: One fraction of aqueous acetic acid extract of M. oleifera flower was found highly effective and more potent than conventional antibiotics of different classes against Multi-drug resistant Gram-negative bacilli (MDR-GNB) when compared. The phytochemical analysis of the isolated compound revealed the presence of hydrogen-bonded amine and hydroxyl groups attributable to unsaturated amides. Conclusion: The present study provided data indicating a potential for use of the flowers extract of M. oleifera in the fight against infections caused by lethal MDR-GNB. Recommendations: Aqueous acetic acid flower extract of M. oleifera is effective, in-vitro, against Gram-negative bacilli. This finding may open a scope in pharmaceutics for the development of new classes of antibiotics.

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