Screening of Medium Components and Process Parameters for Sugar Beet Molasses Vinasse Decolorization by Lactobacillus plantarum Using Plackett-Burman Experimental Design

Seruga, Przemysław; Krzywonos, Małgorzata

doi:10.15244/pjoes/24931

Cited by 8 publications

(5 citation statements)

References 18 publications

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“…It can be found that the obtained data does not correspond to the Freundlich model, especially for the case of the natural bentonite, and for the bentonite activated with NaCl in relatively low concentrations. The determination coefficient (R 2 ) of 0.772 (which means that 77.2% of the total variation is explained by the model) cannot suggest a satisfactory representation of the process model, or a strong correlation between the experimental and predicted values [25,26].…”

Section: Resultsmentioning

confidence: 99%

Removal of Ammonia from the Municipal Waste Treatment Effluents using Natural Minerals

et al. 2019

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Due to various ecological problems, it is required to remove the ammonia nitrogen from wastewater. Industrial wastewater that was not subjected to any purification was used in this study, while most processes described in the literature were carried out using synthetically prepared solutions. The study investigated the removal of ammonium ions using ion exchange on various commercial minerals, in 3 h long batch ion-exchange experiments. Furthermore, research on the sodium chloride activation of the selected mineral was conducted. The screening of the mineral with the highest removal potential was conducted taking into account the adsorption capacity (q) and maximal removal efficiency (E), based on the NH4+ ions changes determined using the selective electrode and spectrophotometric cuvette tests. The highest adsorption capacity (q = 4.92 mg/g) of ammonium ions with the maximum removal efficiency (52.3%) was obtained for bentonite, with a 0–0.05 mm particle size. After pretreatment with a 1 mol/L NaCl solution, maximum efficiency increments were observed (55.7%). The Langmuir adsorption isotherm corresponds well with the equilibrium adsorption data (R2 from 0.97 to 0.98), while the Freundlich model was found to be mismatched (R2 = 0.77). Based on these results it was concluded that natural sorbents may be effectively applied in wastewater treatment. It can be observed that as the size of sorbent particles gets lower, the adsorption capacity, as well as the removal efficiency, gets higher. The bentonite pretreatment with the NaCl solution did not result in the expected efficiency improvement. The 2 mol/L solution affected about 3.5% of the removal efficiency yield.

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Section: Resultsmentioning

confidence: 99%

Removal of Ammonia from the Municipal Waste Treatment Effluents using Natural Minerals

et al. 2019

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“…Among examined factors, pH-value was found to be significant. The determination coefficient (R2) of 0.93 (which means that the model explains 93% of the total variation) suggests an adequate representation of the process model and a good correlation between the experimental and predicted values [46,47].…”

Section: Resultsmentioning

confidence: 99%

Treatment of By-Products Generated from Anaerobic Digestion of Municipal Solid Waste

Seruga

Krzywonos

Wilk

2019

Waste Biomass Valor

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Purpose This study aimed to examine the possibilities of the treatment of the by-products generated in the anaerobic digestion (AD) of the organic fraction of municipal solid waste (OFMSW): oxygen stabilization (composting) of the solid digestate and pretreatment with air stripping of the effluents (liquid digestate and leachate from maturation field and reactors from composting). Methods Oxygen stabilization (OS) was performed in full-scale in a mechanical-biological treatment (MBT) plant using three different methods, using an open field or enclosed box reactor with aeration. The ammonia stripping was performed in a pilot-scale installation using effluents from AD (liquid digestate) and OS (leachate from maturation field and reactors). Results The lowest self-heating possibility after the OS was recorded at 28.5 °C, which proves that the most stabilized was the sample after processing with structuring material addition. Due to air stripping, the highest efficiency of ammonium ions removal was noted at the level of 50.6%, with an initial pH value of 10.5, after 12 h. Among the examined factors pH value was found to be significant [the determination coefficient (R 2) of 0.93]. Conclusions The oxygen stabilization of the digestate requires the structuring material addition before being placed in the reactor with aeration. The inert fraction from the ballistic separation of the OFMSW can be an interesting solution, as required structuring material. Air stripping as the effluents pre-treatment step can meet the MBT plants expectations.

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“…; temperature, 27ºC; wavelength, 290 nm) according to the method described by Seruga and Krzywonos [13]. Changes in the content of coloured substances (Glu-Gly melanoidins) were evaluated by the degree of surface area reduction, limited by the chromatogram curve, and calculated for the retention time RT from 3.8 to 6.2 min for the peak with RT = 4.8 min ± 0.24 min.…”

Section: Methodsmentioning

confidence: 99%

Decolourization of Sugar Beet Molasses Vinasse by Lactic Acid Bacteria – the Effect of Yeast Extract Dosage

Wilk¹,

Krzywonos²,

Borowiak³

et al. 2018

Pol. J. Environ. Stud.

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An increased scientific interest in the colourants from vinasse began in the last decade of the 20 th century, when it was shown that some of them are toxic to animals and plants. The source of colourants in beet vinasse is not beet juice, which is colourless, but the process of obtaining white sugar from beet juice and the technology for producing ethanol from molasses. Dominant coloured compounds in sugar beet molasses vinasse (BMV) are formed in the processes of the degradation of sugars, particularly glucose and fructose. These monosaccharides are the result of the inversion of sucrose, which already occurs in the early stages of the production of beet sugar [1]. Under conditions of high temperature and acidic or alkaline pH, they are degraded to highly reactive intermediates, which, by condensation and polymerization, form coloured polymers. These compounds are formed without enzymes. The non-enzymatic reactions of the hexoses may produce melanoidins, invert alkaline degradation Pol. J. Environ. Stud. Vol. 28, No. 1 (2019), 385-392 AbstractVinasse is the waste product from the production of ethanol that is most loaded with pollutants. Known methods of treating vinasse allow for a reduction in the pollution load, but do not remove the brown colour. The aim of this study was to investigate the effect of the addition of yeast extract ( ), and different amounts of yeast extract addition (2.24, 4.48, and 8.96 g dm -3 ). It was observed that an increase in the YE dose in the medium was followed by a decrease in decolourization of the vinasse. The maximum decolourization was 28.36% ). Regardless of the YE amount added to the medium, removal of invert alkaline degradation products content in all experiments was at a similar level (approx. 13%). With an increased dose of YE, an increase in the caramel content was observed. The biggest melanoidins removal (62.3%) was found in the process with the highest YE dose. The acrylamide, 4-methylimidazole, furfural, 5-hydroxymethylfurfural, and 2-acetyl-4-(1,2,3,4)-tetrahydroxy-butylimidazole were completely assimilated.

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Screening of Medium Components and Process Parameters for Sugar Beet Molasses Vinasse Decolorization by Lactobacillus plantarum Using Plackett-Burman Experimental Design

Cited by 8 publications

References 18 publications

Removal of Ammonia from the Municipal Waste Treatment Effluents using Natural Minerals

Removal of Ammonia from the Municipal Waste Treatment Effluents using Natural Minerals

Treatment of By-Products Generated from Anaerobic Digestion of Municipal Solid Waste

Decolourization of Sugar Beet Molasses Vinasse by Lactic Acid Bacteria – the Effect of Yeast Extract Dosage

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