Merve Visnyei, P. Bakonyi, N. Nemestóthy, K. Bélafi-Bakó
{"title":"Separation of Dissolved Gases from Aqueous Anaerobic Effluents Using Gas-Liquid Membrane Contactors","authors":"Merve Visnyei, P. Bakonyi, N. Nemestóthy, K. Bélafi-Bakó","doi":"10.33927/hjic-2022-14","DOIUrl":"https://doi.org/10.33927/hjic-2022-14","url":null,"abstract":"This study aimed to evaluate a gas-liquid membrane contactor for recovering the dissolved gases of methane (CH4) and carbon dioxide (CO2) from model aqueous anaerobic effluents. For this purpose, synthetic effluents were prepared by using the gas mixtures of SE-1: 100/0, SE-2: 0/100 and SE-3: 50/50 CH4/CO2 vol.% as well as DI water. The units in which the synthetic effluent was prepared were coupled with a dense hollow fiber membrane module by employing argon gas at atmospheric pressure. The desorption of the gases CH4 and CO2 dissolved in the effluents was investigated with a countercurrent flow of the liquid on the lumen side. The effect of the sweep gas flow rate on the removal rate was also investigated. The results showed that the recovery rate of CH4 was slightly affected by increasing the sweep gas flow rate, while the recovery rate of CO2 was enhanced considerably. By applying a sweep gas flow rate of 20 mL/min, the recovery rate of both gases from SE-3 exceeded 50%.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44673431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Székely, Norbert Zsolt Szígyártó, A. Tóth, C. Barta
{"title":"The Rhizosphere of Petrosimonia Triandra may Possess Growth-Inducing and Salinity-Tolerance Potential","authors":"G. Székely, Norbert Zsolt Szígyártó, A. Tóth, C. Barta","doi":"10.33927/hjic-2022-12","DOIUrl":"https://doi.org/10.33927/hjic-2022-12","url":null,"abstract":"The root microbiome of halotolerant plants can represent a great source of salt-tolerant plant growth-promoting rhizobacteria (ST-PGPR) with a wide range of beneficial effects on plants growth, development and productivity. The better understanding of the variety of complex salt tolerance and adaptive mechanisms of halophytes can contribute to improve salt tolerance in crops, and as a result, a better and increased use of saline areas worldwide. In addition, reclaiming saline areas for agricultural use may be able to alleviate the global threat of progressive soil salinization.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48659048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimization of Erythritol Fermentation by High-Throughput Screening Assays","authors":"Edina Eszterbauer, Á. Németh","doi":"10.33927/hjic-2022-11","DOIUrl":"https://doi.org/10.33927/hjic-2022-11","url":null,"abstract":"In this research, the erythritol-producing ability of three Yarrowia lipolytica strains was investigated. The focus of our research was to achieve the highest possible erythritol concentration by examining and optimizing the cultivation conditions of erythritol fermentation. The complex utilization of the produced fermentation broth was also sought, e.g. the ergosterol extraction of yeast cells and isolation of a biodetergent from the foam formed during erythritol fermentation. Erythritol is a naturally occurring, widespread sugar alcohol that is gaining popularity, moreover, due to increases in usage, its demand among consumers is rising, which is why the importance of its biological production is becoming all the more critical in the food industry. Erythritol is 60-70% as sweet as sucrose and a low-calorie sweetener. Some microorganisms are capable of producing erythritol from glucose, meanwhile Yarrowia lipolytica strains have been reported as glycerol-consuming erythritol producers. These two sources of carbon were compared despite being subjected to further conditions like the initial pH, nitrogen sources and some additives. The largest production of erythritol was achieved by Y. divulgata resulting in 44g/L on glycerol compared to only 2g/L on glucose. The best supplementation was found to include ammonium nitrate and sodium citrate resulting in a product yield of 33%.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46771450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigations into the Usage of the Mineral Alginite Fermented with Lactobacillus Paracasei for Cosmetic Purposes","authors":"P. Toth, Á. Németh","doi":"10.33927/hjic-2022-13","DOIUrl":"https://doi.org/10.33927/hjic-2022-13","url":null,"abstract":"A remarkable interplay between the skin and the fermentation of lactic acid bacteria (LAB) occurs. The lactate and amino acids in the supernatant of this bacteria help to hydrate the skin. The fermentation broth of lactic acid bacteria, generally referred as \"lactic acid bacteria ferment\" according to International Nomenclature of Cosmetic Ingredients (INCI), has been used to make a variety of cosmetic components. The goal of this study was to evaluate new approaches to assess ferment filtrates (also known as cell-free fermentation broths) that could be used in cosmeceuticals. Despite years of research on the production of lactic acid, aesthetic evaluations have not yet been performed. First, the Lactobacillus paracasei strain NCAIM B.01525 was employed in our research. Furthermore, a fermentation broth was produced containing the Hungaricum mineral alginite and the impact of hydration on human skin tested. The influence of alginite on the fermentation of LAB was also examined. According to the results of the trials, although alginite might double and triple biomass and specific growth rates, respectively, it cannot facilitate hydration of the skin. These results might contribute to the development of more widely accessible, environmentally-friendly cosmetic components in the future.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49193852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria Elena Lozano Fernandez, Szabina Tomasek, Csaba Fáyköd, A. Somogyi
{"title":"Investigation of the Pyrolysis of Animal Manure in a Laboratory-Scale Tubular Reactor: The Effect of the Process Temperature and Residence Time","authors":"Maria Elena Lozano Fernandez, Szabina Tomasek, Csaba Fáyköd, A. Somogyi","doi":"10.33927/hjic-2022-15","DOIUrl":"https://doi.org/10.33927/hjic-2022-15","url":null,"abstract":"This paper focuses on the pyrolysis of animal manure in a laboratory-scale tubular reactor between 300 and 900°C at nitrogen flow rates of 1 and 5 dm3/h. During the experiments, it was found that both the temperature and nitrogen flow rate had significant effects on the product yields and compositions. The highest gas yield and syngas content were observed at 900°C at a nitrogen flow rate of 1 dm3/h. In this case, since the gaseous product was characterized by a H2/CO ratio of 0:5, its quality must be improved prior to being used for synthesis. The composition of the solid residue was also affected by the pyrolysis parameters. Based on the hydrogen/carbon and oxygen/carbon ratios, it was concluded that both the water-gas shift and Boudouard reactions were the most critical.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47267744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Developing Plant Models of Reduced Complexity by Chemical Process Engineering Way of Thinking","authors":"M. Varga","doi":"10.33927/hjic-2022-09","DOIUrl":"https://doi.org/10.33927/hjic-2022-09","url":null,"abstract":"Given the increasing complexity of agricultural systems within the broader context of the bio-based circular economy, simplified and unified plant models are needed that represent the primary biomass production by solar-driven carbondioxide sequestration. Utilizing experiences from process systems engineering, which was originally inspired by chemical engineering, a suitable plant model is proposed. The structure of the model is generated from the process net of theunderlying state and transition elements. Two special-state elements are introduced for the short-term storage of the supplied biomass to be distributed and the uptake of nutrient-containing water, necessary for evapotranspiration and photosynthesis. The transition-oriented description of functionalities follows the essential causalities and balances of natural self-control. Implementation of the model is illustrated by a simple example.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43206918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Piroska Lajtai-Szabó, Tímea Brigitta Bagó, N. Nemestóthy
{"title":"Production of Chiral (S)-2-Phenyl-1-Propanol by Enantioselective Biocatalysts","authors":"Piroska Lajtai-Szabó, Tímea Brigitta Bagó, N. Nemestóthy","doi":"10.33927/hjic-2022-05","DOIUrl":"https://doi.org/10.33927/hjic-2022-05","url":null,"abstract":"Enantioselective production of (S)-2-phenyl-1-propanol is important as in order to be applied in industry, a high degree of optical purity is required. Besides organocatalysts and metal complexes, biocatalysts can be used for its synthesis in their isolated form or as whole-cell biocatalysts, both of which have various advantages and disadvantages. In this research, Saccharomyces cerevisiae, as a whole-cell biocatalyst, and recombinant horse-liver alcohol dehydrogenase (ADH), as an isolated enzyme, were investigated in terms of their activity, kinetics and enantioselectivity. In the case of yeast, therate of cofactor regeneration was twice that of substrate conversion, moreover, the biocatalyst Saccharomyces cerevisiae can be characterised by substrate-limited kinetics and low nantioselectivity. In contrast, the isolated enzyme recombinant horse-liver ADH exhibited biphasic kinetics and cofactor regeneration was the rate-limiting step. The outstanding enantioselectivity of recombinant horse-liver ADH renders it a promising catalyst for the purpose of this synthesis.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49153264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Unraveling the Novel Bacterial Assisted Biodegradation Pathway of Morpholine","authors":"Rupak Kumar, S. Kapur, Srinivasa Rao Vulichi","doi":"10.33927/hjic-2022-07","DOIUrl":"https://doi.org/10.33927/hjic-2022-07","url":null,"abstract":"Most xenobiotics are biodegradable, persistent or recalcitrant in nature. Morpholine, a typical xenobiotic, was initially regarded as recalcitrant, however, later proved to be biodegradable by bacterial species like Mycobacterium and Pseudomonas in particular. However, establishing the metabolic pathways involved for the successful biodegradation of morpholine is challenging because of its extreme level of water solubility that affects various analytical procedures. In addition, to date, no suitable analytical methods have been reported to directly estimate the activity of morpholine and its degradable products or intermediates. Nevertheless, methods, especially optical density, gas chromatography and mass spectrophotometric analysis, could indirectly estimate the degradation product(s) of morpholine formed as a result of its biotransformation. In this present study, the degradation pathway of morpholine was scertained by selected bacterial isolates by measuring their capacity to degrade morpholine. Based on this analysis of culture filtrates, it was determined that the novel isolate is the genus Halobacillus blutaparonensis which utilizes the diglycolic acid route from the metabolic degradation pathway of morpholine to induce one of two branches of the morpholine biodegradation pathway in the presence of morpholine while the other branch is inhibited. Whatever the branches with regard to the degradation pathway of morpholine exhibited by bacteria are, ammonia is the final end product of degradation which might be biochemically utilized by the isolate.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42656689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Plant Growth-Promoting Rhizobacteria : Biotechnological Tools to Improve Cereal Yields","authors":"G. Székely, C. Barta","doi":"10.33927/hjic-2022-03","DOIUrl":"https://doi.org/10.33927/hjic-2022-03","url":null,"abstract":"Ensuring food security for the world’s growing population is a significant challenge for scientists. Efforts are constantly being made to solve this problem, including the use of expensive molecular engineering techniques, which are not always successful. A cost-effective and environmentally friendly biotechnological alternative would be the use of plant growthpromoting rhizobacteria, demonstrated by numerous studies to play many beneficial roles in improving plant traits, e.g. enhanced yields.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45657107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Orsolya Adamcsik, Renáta Gerencsér-Berta, Borbála Oláhné Horváth, N. Kovacs, Viola Somogyi, E. Domokos, G. Kemenesi, Endre Gábor Tóth, F. Jakab, I. Galambos
{"title":"Survey of Sars-Cov-2 Genetic Material Reduction During a Traditional Wastewater Treatment Technology","authors":"Orsolya Adamcsik, Renáta Gerencsér-Berta, Borbála Oláhné Horváth, N. Kovacs, Viola Somogyi, E. Domokos, G. Kemenesi, Endre Gábor Tóth, F. Jakab, I. Galambos","doi":"10.33927/hjic-2022-02","DOIUrl":"https://doi.org/10.33927/hjic-2022-02","url":null,"abstract":"The transmission of Severe Acute Respiratory Syndrome Coronavirus-2 in a community can be monitored by a wastewater-based epidemiological approach due to fecal shedding. Although sewage surveillance has gained a considerable amount of attention over the last 16 months, an indirect issue within the topic is whether traditional wastewater treatment technologies are sufficiently efficient to eliminate the genetic material of SARS-CoV-2. Samples were taken from the Wastewater Treatment Plant in Nagykanizsa before the virus was concentrated, nucleic acid extracted and SARS-CoV-2 detected by RT-qPCR (Quantitative reverse transcription PCR). The influent and primary treated samples tested positive, while after the secondary treatment, all the results were negative. Consequently, the activated sludge process proved to be efficient in terms of the removal of SARS-CoV-2.","PeriodicalId":43118,"journal":{"name":"Hungarian Journal of Industry and Chemistry","volume":null,"pages":null},"PeriodicalIF":0.2,"publicationDate":"2022-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49361761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}