Hungarian Journal of Industrial Chemistry最新文献_第3页

Biocomponent-Based Quality Improvement Opportunities of Binders for Road Construction 基于生物组分的道路施工粘合剂的质量改进机会

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-12 DOI: 10.33927/hjic-2019-23

Gréta Tálosi, P. Gergő, A. Holló

引用次数: 0

Production of the Enzyme Cyclodextrin Glycosyltransferase Using Different Fermentation Techniques 不同发酵工艺生产环糊精糖基转移酶

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-12 DOI: 10.33927/hjic-2019-14

Réka Czinkóczky, Á. Németh

引用次数: 5

Residence Time Distribution-Based Analysis of an Industrial-Scale Biogas Fermenter 基于停留时间分布的工业规模沼气发酵罐分析

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-12 DOI: 10.33927/hjic-2019-19

András Tankovics, D. Takács, J. Szendefy, B. Csukás, M. Varga

{"title":"Residence Time Distribution-Based Analysis of an Industrial-Scale Biogas Fermenter","authors":"András Tankovics, D. Takács, J. Szendefy, B. Csukás, M. Varga","doi":"10.33927/hjic-2019-19","DOIUrl":"https://doi.org/10.33927/hjic-2019-19","url":null,"abstract":"Residence Time Distribution (RTD) measurement-based analysis of mixing conditions on an industrial-scale (13,000) anaerobic digester of pressed sugar-beet slices at Kaposvar Sugar Factory of Magyar Cukor Zrt. was studied. The lithium salt tracing technique was applied, while the quantity of the lithium chloride tracer and the sampling of the effluent were designed by a preliminarily studied simulation model of mixing. The lithium concentration at the outlet was analysed by Inductively coupled plasma–optical emission spectroscopy (ICP-OES). Taking into account the geometrical arrangement, the biogas flow produced and the cyclically changing recycle flow, various mixing models were generated with different compartmentalization and flow structures by applying the method of Programmable Process Structures. The simulation-based approximate identification of the mixing model was accomplished by a heuristic approach that took into consideration multiple structures with changing mixing flows. A model with an advantageously small number of compartments and parameters was sought which satisfies the measured RTD. The results suggest the intensive mixing of upper levels with a poorly mixed lower level, which contributes to the long tail in the RTD. The actual set-up supports a good horizontal distribution of the sugar-beet slices and the microbial biomass, while the limited degree of vertical mixing helps to avoid the elutriation of the useful microbiome. The suggested mixing model will be combined with the formerly elaborated model involving 9 bacterial groups.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":"2 1","pages":"43-51"},"PeriodicalIF":0.0,"publicationDate":"2019-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82747377","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}

引用次数: 1

Analysis of Crude Oil in Terms of Fouling and Corrosion 原油结垢与腐蚀分析

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-12 DOI: 10.33927/hjic-2019-15

R. Katona, R. Locskai, G. Bátor, A. Krójer, T. Kovács

引用次数: 0

Immobilization of Laccase in Alginate Beads 漆酶在海藻酸珠中的固定化

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-07 DOI: 10.33927/hjic-2019-16

B. Varga, M. Meiczinger, Viola Somogyi

{"title":"Immobilization of Laccase in Alginate Beads","authors":"B. Varga, M. Meiczinger, Viola Somogyi","doi":"10.33927/hjic-2019-16","DOIUrl":"https://doi.org/10.33927/hjic-2019-16","url":null,"abstract":"The elimination or degradation of micropollutants from wastewater is becoming ever more important nowadays. Using oxidoreductase enzymes to treat different micropollutants seems a promising solution. However, the viability of the process is highly dependent on the availability and stability of the applied enzymes. In order to improve the stability and provide faster reaction rates, enzymes can be immobilized in various carriers. Properties such as simple production, easy retention and biodegradable carrier material are advantageous, e.g. entrapping laccase in alginate beads. This paper shows the results of the preparation and characterization of immobilized laccase entrapped in calcium alginate beads. The technique of adding a mixture of sodium alginate and laccase dropwise into calcium chloride has been applied, improved and standardized to produce laccase-containing beads of uniform size and activity. For the purpose of characterization, a widely used substrate, 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt, was used to evaluate the performance of the laccase-containing alginate beads. In addition to the characterization of the laccase-containing alginate beads, the enzyme kinetic constants (= 26.43 µM, ax = 0.23 µM/min) were determined. The reduction in the activity during storage has been described by a decay constant (0.26 d−1 ) that provides information concerning the design constraints of the process. Results will be used to test the method in terms of the removal of organic micropollutants in continuous systems.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":"18 1","pages":"17-23"},"PeriodicalIF":0.0,"publicationDate":"2019-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81775583","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}

引用次数: 3

Investigations Into Succinic Acid Fermentation 琥珀酸发酵的研究

Hungarian Journal of Industrial Chemistry Pub Date : 2019-12-07 DOI: 10.33927/hjic-2019-13

Á. Németh

{"title":"Investigations Into Succinic Acid Fermentation","authors":"Á. Németh","doi":"10.33927/hjic-2019-13","DOIUrl":"https://doi.org/10.33927/hjic-2019-13","url":null,"abstract":"Succinic acid (SA) is an important chemical intermediate from which fine chemicals ( e.g. detergents), additives (for pharmaceuticals, food (taste), plant growth stimulants) as well as other important intermediates (maleic anhydride, succinimide, 2-pyrrolidinone, dimethyl succinate) can be manufactured. Since SA is involved in the central metabolism of cells (in the tricarboxylic acid (TCA) cycle), it is a key player in the biochemistry of life, which has the potential of biotechnological production. Since SA is formed in the ``middle'' of the TCA cycle it can be formed by both CO2 production and fixation. The significance of the latter is that the amount of the product can be controlled by the availability of CO2, since stoichiometrically one molecule of CO2 is fixed by one molecule of SA. In our studies of compositions of Actinobacillus succinogenes media, the role and effect of pH regulator compounds as well as the effect of an inert atmosphere were investigated in terms of the yield. Furthermore, in fermentation experiments, the application of higher sugar concentrations was also studied. On the basis of different fermentations, a neural network for modelling and describing how factors influence SA production was established.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":"161 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76631665","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}

引用次数: 2

Heavy Metal Balance in a Communal Wastewater Treatment Plant 公共污水处理厂的重金属平衡

Hungarian Journal of Industrial Chemistry Pub Date : 2015-06-01 DOI: 10.1515/636

Z. Győri, N. Boros, P. Sipos, E. Szabó, Katalin Kovács, M. Horváth, Anita Takács, G. Heltai

引用次数: 3

A Comparison of Advanced Non-linear State Estimation Techniques for Ground Vehicles 地面车辆非线性状态估计先进技术的比较

Hungarian Journal of Industrial Chemistry Pub Date : 2014-11-01 DOI: 10.1515/486

G. Max, B. Lantos

引用次数: 2

The Application of Unknown Input Estimators to Damp Load Oscillations of Overhead Cranes 未知输入估计量在桥式起重机阻尼振动中的应用

Hungarian Journal of Industrial Chemistry Pub Date : 2014-11-01 DOI: 10.1515/488

B. Patartics, B. Kiss

引用次数: 3

On the Parametric Uncertainty of Weakly Reversible Realizations of Kinetic Systems 动力学系统弱可逆实现的参数不确定性

Hungarian Journal of Industrial Chemistry Pub Date : 2014-11-01 DOI: 10.1515/493

György Lipták, G. Szederkényi, K. Hangos

引用次数: 0