Multi-response factorial design optimisation of organic acid separation process using electrodialysis with bipolar membrane

2021 ◽  
Vol 214 ◽  
pp. 95-106
Author(s):  
Adam Andrzejewski ◽  
Mateusz Szczygiełda ◽  
Krystyna Prochaska
Keyword(s):  
Organic Acid ◽  
Factorial Design ◽  
Separation Process ◽  
Bipolar Membrane ◽  
Design Optimisation

scholarly journals PSVIII-16 The effects of adding two organic acid blends with or without high levels of zinc or copper, on post-weaning pig performance

2020 ◽  
Vol 98 (Supplement_3) ◽  
pp. 209-210
Author(s):  
Casey L Bradley ◽  
Jon Bergstrom ◽  
Jeremiah Nemechek ◽  
J D Hahn
Keyword(s):  
Phosphoric Acid ◽  
Benzoic Acid ◽  
Organic Acids ◽  
Organic Acid ◽  
Factorial Design ◽  
Sodium Butyrate ◽  
Weaned Pigs ◽  
Weaning Pig ◽  
Pig Performance ◽  
Dietary Treatments

Abstract A subset of 720 weaned pigs (6.44 ± 0.1 kg, PIC genetics, approximately 21-d of age) were used in a 42-d trial with a 2x3 factorial design evaluating the effects of adding organic acid (OA) blends [factor 1 = no organic acid (NO), Acid Pak 1 (AP1), Acid Pak 2 (AP2)] to diets with or without higher levels of Zn or Cu [factor 2 = +/-PZC] on pig performance. Pigs were allotted 10 pigs/pen to 12 weight blocks and randomly assigned the six dietary treatments. The +PZC diets contained 3000 ppm Zn (d 0-7), 2000 ppm Zn (d 8-21), and 250 ppm Cu (d 21-42) and -PZC diets contained 95 ppm Zn and 20 ppm Cu (d 0-42). The AP1 and AP2 diets used 0.9% of 2 acid premixes (d 0-21), and 0.45% of the premixes (day 22-42). AP1 provided 0.5% benzoic acid, 0.07% sodium butyrate, and 0.025% phosphoric acid (day 0-21) and half those levels (day 22-42). AP2 included the same acids as AP1 but at half the rate and combined with 7 other organic acids and carvacrol. From d 0-21, ADG, ADFI, and G:F were improved (P< 0.01) by +PZC compared to -PZC and by AP1 or AP2 compared to NO (P< 0.02). Overall (d 0-42), ADG and G:F were improved (P< 0.01) by +PZC compared to -PZC and by AP1 or AP2 compared to NO (P< .010). Data from this trial indicate that performance was improved by the addition of both OA and PZC. However, pigs fed OA and -PZC performed similarly to those fed NO and +PZC in the post-weaning period. In summary, regardless of the acid combination, organic acid supplementation has the potential to improve growth performance in weaned pigs.

Factorial design optimisation of grape (Vitis vinifera) seed polyphenol extraction

2009 ◽  
Vol 229 (5) ◽  
pp. 731-742 ◽  
Author(s):  
Evangelia Karvela ◽  
Dimitris P. Makris ◽  
Nick Kalogeropoulos ◽  
Vaios T. Karathanos ◽  
Panagiotis Kefalas
Keyword(s):  
Vitis Vinifera ◽  
Factorial Design ◽  
Design Optimisation ◽  
Polyphenol Extraction

scholarly journals Organic acid adsorption and mineralization in oxisols with different textures

2013 ◽  
Vol 37 (4) ◽  
pp. 976-985 ◽  
Author(s):  
Felipe Vaz Andrade ◽  
Eduardo de Sá Mendonça ◽  
Ivo Ribeiro da Silva
Keyword(s):  
Organic Acids ◽  
Organic Acid ◽  
Factorial Design ◽  
Microbial Activity ◽  
Carbon Mineralization ◽  
Co2 Production ◽  
Co2 Efflux ◽  
Adsorption Sites ◽  
Nutritional Conditions ◽  
Soil Adsorption

Organic acids play an important role in the nutritional conditions of plants. Their relevance is related to their formation dynamics, mineralization rate and adsorption by soil colloids. This study was carried out to evaluate the dynamics of mineralization and adsorption of organic acid (acetic acid - AA, citric acid - CA and humic acid - HA) applied to the soil. Samples of two Oxisols were used: Rhodic Haplustox (LV) and Typic Haplustox (LVA). The mineralization experiment was arranged in a 2 x 3 x 5 factorial design, based on the factors: two soils (LV and LVA) x three organic acid (OA) types (AA, CA and HA) x five OA rates (0, 1, 2, 4, and 8 mmol dm-3). Organic carbon mineralization in samples was measured by the C-CO2 efflux, produced by the microbial activity, in a 30-day (measurements after 4, 8, 12, 21, and 30 days) and in a 4-day experiment (measured after 24, 48, 72 and 96 h). Organic acid adsorption was tested in a 2 x 2 x 5 x 4 factorial design, with the factors and levels: two Oxisols; two organic acids (AA and CA); five OA rates (0, 1, 2, 4, and 8 mmol dm-3) and four adsorption periods (6, 24, 48, and 72 h). The C-CO2 production of soil treated with CA was highest. In the adsorption experiment, the affinity of CA to soil adsorption sites was greatest. The adsorption of organic acids to soils may be an important mechanism by which bioavailability and thus mineralization capacity by microbial activity are reduced.

scholarly journals Low-waste fermentation-derived organic acid production by bipolar membrane electrodialysis—an overview

2021 ◽  
Author(s):  
Éva Hülber-Beyer ◽  
Katalin Bélafi-Bakó ◽  
Nándor Nemestóthy
Keyword(s):  
Organic Acid ◽  
Acid Production ◽  
Free Acid ◽  
Raw Materials ◽  
Fermentation Broth ◽  
Water Dissociation ◽  
Bipolar Membrane ◽  
Organic Acid Production ◽  
Bipolar Membranes ◽  
Bipolar Membrane Electrodialysis

AbstractOrganic acids, e.g, citric acid, fumaric acid, lactic acid, malic acid, pyruvic acid and succinic acid, have important role in the food industry and are potential raw materials for the sustainable chemical industry. Their fermentative production based on renewable raw materials requires innovatively designed downstream processing to maintain low environmental impact and resource efficiency throughout the production process. The application of bipolar membranes offers clean and effective way to generate hydrogen ions required for free acid production from its salt. The water dissociation reaction inside the bipolar membrane triggered by electric field plays key role in providing hydrogen ion for the replacement of the cations in organic acid salts. Combined with monopolar ion-exchange membranes in a bipolar membrane electrodialysis process, material flow can be separated beside the product stream into additional reusable streams, thus minimizing the waste generation. This paper focuses on bipolar membrane electrodialysis applied for organic acid recovery from fermentation broth.

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