Arsenic Removal by Membrane Filtration

Pal, Parimal

doi:10.1016/b978-0-12-801281-9.00004-7

Cited by 10 publications

(5 citation statements)

References 26 publications

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“…(Huerta-Ochoa et al, 2019) reported application of RSM for bio-conversion of citrus avonoids for improvement of its bio property. There are published works reporting employment of RSM for Arsenic removal by Membrane Filtration (Pal, 2015), supercritical uid extraction of bioactive material from fruit (Yim et al, 2019). In our analysis full factorial three level design was contemplate to optimize condition for development of tannase.…”

Section: Chapter 3: Statistical Optimization Of Tannase Enzyme By Res...mentioning

confidence: 99%

Tannase enzyme (Tannin acyl hydrolase, EC 3.1.1.20 : Source of Gallic acid and various Gallate biproducts) production by Solid state fermentation With Aspergillus niger from fruit and tea wastes and optimization of the process parameters by OVAT and Response Surface Methodology

Das,

Ghosh,

Biswas

2023

Preprint

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Biocatalysts are amongst the valuable articles required for urgent need of people and are produced by microbial sources. In general enzymes are manufactured by submerged fermentation. However it is expensive because of its high operating costs. Solid state fermentation (SSF) is a propitious alternative for manufacture of enzyme in a cost effective way. Development of food products with fruits and vegetables propagate peels in enormous quantity as waste.Bioconversion of the waste for enzyme synthesis results several advantages including value addition to the waste, reduction in environmental pollution, simultaneously reducing the production cost of enzyme. The diverse administration of Tannase in food and feed processing, chemical as well as waste treatment makes it one of the most potential enzymes for Industry. The present study reveals the biosynthesis of Tannase enzyme from food wastes such as peels of fruits and vegetables, used tea leaves and wheat bran by SSF applying Aspergillus niger strain. As a result of this work Orange peel was found as potential substrate to Tannase producer resulting highest amount of enzyme 0.0037 unit/gm dry solid followed by mango peel and used tea leaves with activity of 0.0035 and 0.0026 u/gds respectively. The ideal condition of fermentation studied by OVAT methodology and highest activity 0.0038 u/gds was observed at 300C temperature, for 9 days of fermentation under static condition by orange peel with hydration of 1:3 w/v. Finally RSM (Response surface methodology) was applied for optimization of parameters to improve tannase yield.

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Section: Chapter 3: Statistical Optimization Of Tannase Enzyme By Res...mentioning

confidence: 99%

Tannase enzyme (Tannin acyl hydrolase, EC 3.1.1.20 : Source of Gallic acid and various Gallate biproducts) production by Solid state fermentation With Aspergillus niger from fruit and tea wastes and optimization of the process parameters by OVAT and Response Surface Methodology

Das,

Ghosh,

Biswas

2023

Preprint

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“…Membrane processes stand out due to their ease of use, capacity to recover added-value products, and lack of polluting reagents (Hao et al, 2018). There has been a recent trend to develop functionalized membranes to treat arsenic-contaminated water; these membranes are known for having reactive groups under the surface that allow for the adsorption of pollutants (González Herrera & García López, 2021; Pal, 2015). García-García et al, functionalized a polypropylene membrane with chitosan to remove As(V), reaching a 75% removal e ciency with an initial concentration of 0.4 mg/L (García-García et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Efficiency of an Adsorbent Membrane in Removing as (V): Operational Paramaters.

Molina-Jacinto,

Gómez-Espinosa,

ARIZMENDI-COTERO

2024

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This paper studies the adsorbent efficiency of a modified polypropylene membrane, functionalized with carboxyl groups, to remove the As(V) from an aqueous solution. The carboxyl groups interact with arsenate in acid media by hydrogen bonds. Response surface methodology was used to optimize and evaluate parameters such as the initial concentration of As(V), contact time, and the membrane grafting degree. We found that the optimal working conditions of the membrane occurred at an initial concentration of 0.98 mg/L of As(V) and 11.8 hours of contact time, achieving a removal percentage of 68.4%. The adsorbent membrane is a potential alternative to removing arsenic from contaminated water.

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“…6 The current resurgence in permanganate chemistry is due to its widespread use as an environmental green oxidant for the remediation of dissolved organic matter (DOM) and emerging persistent organic contaminants (EOC) in waste and groundwater including hydrocarbons, nitroaromatics (TNT), bromophenols, antibiotics, chlorinated hydrocarbons (TCE and PCE), 7–13 and groundwater arsenic. 14 Oxidation of cellulose results in carboxylated cellulose nano-crystals. 15,16 Permanganate is also used as an ethylene scavenger in horticulture produce, 17 in the denim industry, 18 and as a probe for DNA footprinting.…”

Section: Introductionmentioning

confidence: 99%