Supported liquid membranes with strip dispersion for the recovery of Cephalexin

Vilt, Michael E.; Ho, W.S. Winston

doi:10.1016/j.memsci.2009.06.026

Cited by 49 publications

(22 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table shows higher permeation rate at 2 and 4% feed concentration. Similar trend of increase in extraction time with increase in feed concentration for extraction of Cephalexin was reported by Vilt and Ho (). Initial citric acid concentration of 2% was chosen for further study.…”

Section: Resultssupporting

confidence: 86%

Extraction of Citric Acid from Fruit Juices using Supported Liquid Membrane

Chanukya

Prakash

Rastogi

2016

Journal of Food Processing and Preservation

View full text Add to dashboard Cite

This study deals with facilitated transport of citric acid using supported liquid membrane composed of polytetrafluroethylene membrane as the support, Aliquat‐336, toluene, sodium carbonate + sodium bicarbonate as carrier, organic‐membrane and strip phase, respectively, from aqueous solutions and fruit juices. The optimum citric acid extraction conditions from aqueous solutions in batch mode were investigated and the standardized conditions were applied for extraction of citric acid from fruit juices. Complete and partial (33%) citric acid extraction was achieved from sweet‐lime, lemon, and orange juices with sodium carbonate + sodium bicarbonate and distilled water as strip solutions, respectively. Practical Applications The present study of facilitated and controlled extraction of citric acid from citrus fruit juices using supported liquid membrane stands as an alternative method of de‐souring citrus fruit juices for improving the palatability and consumer acceptability of the processed citrus fruit juice. The standardized various extraction parameters provide optimum conditions for complete or partial citric acid from model systems and fruit juices.

show abstract

Section: Resultssupporting

confidence: 86%

Extraction of Citric Acid from Fruit Juices using Supported Liquid Membrane

Chanukya

Prakash

Rastogi

2016

Journal of Food Processing and Preservation

View full text Add to dashboard Cite

show abstract

“…This antibiotic is widely used to treat a variety of human infections caused by Gram-positive and Gram-negative bacteria. Several serious environmental hazards from CEX in the environment have been a public health problem for many years (Ahmed and Theydan, 2012;Vilt and Ho, 2009).…”

Section: Brazilian Journal Of Chemical Engineeringmentioning

confidence: 99%

Modeling and Optimization of Removal of Cefalexin From Aquatic Solutions by Enzymatic Oxidation Using Experimental Design

Shokoohi

Samadi

Amani

et al. 2018

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

Antibiotics are used globally and, after use, they enter water sources in different ways. The presence of these compounds in the environment has created concerns about the toxicity of aquatic organisms and the emergence of antibiotic-resistant bacteria. The purpose of this study was to remove cefalexin from aqueous solutions by enzymatic oxidation using response surface methodology (RSM). For this purpose, batch experiments were performed to evaluate the effect of independent variables, including temperature, pH, contact time, enzyme activity, HBT mediator concentration, and antibiotic concentration. The residual cefalexin concentration was determined by HPLC. The Box-Behnken design of experiments and RSM were used to evaluate the overlap between variables. The results showed that the oxidation efficiency increased with increasing contact time and enzyme activity and decreasing antibiotic concentration. The highest and lowest removal percentages were 90.5% and 5.54%, respectively. Considering the value of R 2 (0.946) and adjusted R 2 (0.95) in the RSM model, one can state that the selected model is suitable for data analysis. Finally, the second-order polynomial analysis and the quadratic model were used as the best model for finding the relationship between the main variables and cefalexin removal efficiency. The Box-Behnken Design model can be effective for optimizing enzymatic oxidation of cefalexin, and laccase can be used to remove cefalexin.

show abstract

“…Efforts have been focused on preventing the loss of organic liquid extractant including the application of gelating coating layer [19,21], interfacial polymerization coating [17], ion exchange membranes [22], immobilization of extraction molecules to the membrane matrix [23][24][25] and composite membrane with hydrophilic and hydrophobic layers [26][27][28][29], addition of extractant into the strip solution [30], and optimization of the membrane module structure [31]. These membranes have shown some advantages but performance stability was still below satisfaction.…”

Section: Introductionmentioning

confidence: 99%