Hungarian Journal of Industrial Chemistry最新文献_第9页

Comparative Study on Electrodialysis Systems for Galacturonic Acid Recovery 电渗析系统回收半乳糖醛酸的比较研究

Hungarian Journal of Industrial Chemistry Pub Date : 2012-09-01 DOI: 10.1515/343

K. Bélafi-Bakó, E. Molnár, Z. Csanádi, N. Nemestóthy

引用次数: 2

Biocatalytic Hydrogen Sulphide Removal from Gaseous Streams 从气体流中生物催化去除硫化氢

Hungarian Journal of Industrial Chemistry Pub Date : 2012-09-01 DOI: 10.1515/347

G. Tóth, É. Lövitusz, N. Nemestóthy, K. Bélafi-Bakó

{"title":"Biocatalytic Hydrogen Sulphide Removal from Gaseous Streams","authors":"G. Tóth, É. Lövitusz, N. Nemestóthy, K. Bélafi-Bakó","doi":"10.1515/347","DOIUrl":"https://doi.org/10.1515/347","url":null,"abstract":"Hydrogen sulphide is one of the most important substances responsible for unpleasant odour emissions in gas phase. It is often formed in higher concentration beyond other sulphur containing volatile compounds like methane thiol (MT), dimethyl sulphide (DMS) and dimethyl disulphide (DMDS). Removal of hydrogen sulphide is usually carried out by physical-chemical methods (e.g. adsorption), but nowadays some bio-processes may be considered as promising alternatives. Certain sulphur oxidising thiobacteria can be successfully applied for hydrogen sulphide conversion from gaseous streams like biogas. Various strains have been applied so far for degradation of hydrogen sulphide, they belong mostly to the group of Thiobacillus, which are autotrophic microorganisms. These autotrophic bacteria have the drawback in application that they grow slower than the heterotrophic ones and it is more difficult to control their growth. A number of chemotrophs are suitable for the biodegradation of H2S. These bacteria grow and produce new cell material by using inorganic carbon (CO2) as a carbon source and chemical energy from the oxidation of reduced inorganic compounds such as H2S.The objective of the work described here was to study the ability of elimination of hydrogen sulphide by two chemotrophic microorganisms (Thiomonas intermedia, Thiobacillus thioparus) in a batch bioreactor. The other aim was the study of the immobilization of these bacteria to different supports.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80037543","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: 4

Optimal Design of High-Temperature Thermal Energy Store Filled with Ceramic Balls 陶瓷球填充高温热能储存库的优化设计

Hungarian Journal of Industrial Chemistry Pub Date : 2012-09-01 DOI: 10.1515/348

T. Borbély

{"title":"Optimal Design of High-Temperature Thermal Energy Store Filled with Ceramic Balls","authors":"T. Borbély","doi":"10.1515/348","DOIUrl":"https://doi.org/10.1515/348","url":null,"abstract":"The momentary amount of the available solar energy and the demand usually are not equal during the usage of solar energy for heating and electric power supply. So it is necessary to store the heat energy. This article shows optimal design of a new construction, sensible heat store filled with solid heat storage material. The planned heat store has cascade system formed a spiral flow-path layout. This is a conceptual model, worked out in case of packed bed with ceramic balls. The aim of the special layout is to realize better overall efficiency than regular sensible heat stores have. The new construction would like to get higher overall efficiency by long flow-way, powerful thermal stratification and spiral flow-path layout which can ensure lower heat loss. The article shows the calculation method of the simulation of the charge and discharge and the calculation method of the overall efficiency using the results of the simulations. The geometric sizes and operating parameters of the thermal energy store with the best overall efficiency were calculated using genetic algorithm (GA). The results of the calculation tasks show that a thermal energy store with long flow-way, with cascade system formed spiral flow-path layout has higher overall efficiency than an one-duct, short flow-way thermal energy store which has equal mass of solid heat storage material as the long flow-way one, mentioned before.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2012-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77514144","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

Prototype of a Multi-Robot System for Autonomous Gas Mapping in Polluted Environments 污染环境中自主气体测绘的多机器人系统原型

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/418

D. Lupea, I. Szoke, A. Majdik, G. Lazea

{"title":"Prototype of a Multi-Robot System for Autonomous Gas Mapping in Polluted Environments","authors":"D. Lupea, I. Szoke, A. Majdik, G. Lazea","doi":"10.1515/418","DOIUrl":"https://doi.org/10.1515/418","url":null,"abstract":"The need of environmental monitoring robots is imposed by nowadays trends related to sustainability – towards protecting the environment and the human factor. This research received a great amount of focus in the past years. The directions of study in this area of research will be overviewed in the next lines. They are varied and range from robots designed to monitor ammonia pollution near animal farms to robots which search for unexploded ordinance, or sources of leaks from pipes and tanks, and even to a collecting and segregating garbage robot which also monitors pollution while performing its other tasks. This paper describes a novel system that aims to explore dangerous sites (old mines, chemical plants, etc), where an autonomous ground robot and a micro unmanned aerial vehicle (UAV) are sent together to map the area in order to detect toxic gases. The new approach proposes a multi-robot architecture which uses a multi-sensor gas detection measurement unit which uses a Simultaneous Localization and Mapping (SLAM) algorithm for 3D autonomous gas mapping. Current research is trying to shift the use of robots for gas detection from indoor environments towards the outdoors. There can be found several research directions with applications based on ecological robots.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74227274","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

Methods of Surfaces Quality Comparison in Mechanical Engineering Applications 表面质量比较方法在机械工程中的应用

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/378

L. Solecki

{"title":"Methods of Surfaces Quality Comparison in Mechanical Engineering Applications","authors":"L. Solecki","doi":"10.1515/378","DOIUrl":"https://doi.org/10.1515/378","url":null,"abstract":"The macro- and micro-geometric properties featuring the boundary surfaces of machine components are important for quality reasons. The comparison of surfaces is needed if the machined surface is to be matched to preset requirements or the same surface can be manufactured with different manufacturing processes or various measurement and surface testing methods are available, or the time variation of the surface is to be assessed. After the comparison, surface deviations must be numerically evaluated in relation to size, shape, position, and surface irregularity. Nowadays, surface irregularity tends to represent not only the unevenness of the surface but also the comparison of the real surface to a favourable microgeometric structure. Information on the actual surface is obtained through perception (optical or mechanical), and the nominal surface can be a mathematical model, a sample, or a previous condition of the surface in the form of any previous perception, or a previously made print of the surface (replica). During comparison, similarities and differences must be evaluated in terms of the key properties of the surface related to the operation of the given component. Comparison based on visual inspection is a suitable and acceptable method for a quick inspection, for identification of the parts of the component, and for detection of significant deviations. A technically more advanced method is image processing. Three dimensional properties of the surfaces can be evaluated with 3D geometric calculation methods and methods developed for surface roughness. The presentation introduces a method for comparing cylinder surfaces of an internal combustion engine and presents an example of the method currently used in automotive engineering applications.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78392055","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: 0

On-Board Applicability of Mems-Based Autonomous Navigation System on Agricultural Aircrafts 基于mems的农用飞机自主导航系统的机载适用性

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/416

P. Nádasi, I. Szabó

引用次数: 5

Finite Element Method Analysis of Hip-Joint Prosthesis 髋关节假体的有限元分析

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/415

R. Monostori, I. Dudás

引用次数: 1

Some Design Issues of Multi-Plate Magnetorheological Clutches 多片磁流变离合器的若干设计问题

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/380

D. Törőcsik

引用次数: 8

Development of a Vehicle-Dynamic Measurement and Information System 车辆动态测量与信息系统的开发

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/429

Ferenc Szauter, J. Szekely, E. Horvath

引用次数: 0

Investigation of the Hydroconversion of Lard and Lard-Gas Oil Mixture on PtPd/USY Catalyst PtPd/USY催化剂上猪油和猪油-气混合油加氢转化的研究

Hungarian Journal of Industrial Chemistry Pub Date : 2011-09-01 DOI: 10.1515/374

P. Baladincz, C. Tóth, S. Kovács, J. Hancsók

{"title":"Investigation of the Hydroconversion of Lard and Lard-Gas Oil Mixture on PtPd/USY Catalyst","authors":"P. Baladincz, C. Tóth, S. Kovács, J. Hancsók","doi":"10.1515/374","DOIUrl":"https://doi.org/10.1515/374","url":null,"abstract":"The necessity to maintain mobility and the increasing energy- and environmentally sound demands necessitated the research, development and utilization of engine fuels from renewable resources. Because of the negative features of the already and generally applied bio-derived Diesel fuel, the biodiesel, it was necessary to research and develop other chemical processes that convert triglycerides through different reaction ways. These second generation bio-fuels are the bio gas oils, which are mixtures of n- and i-paraffins. Otherwise these hydrocarbons are the choice components of the fossil derived Diesel fuels. During the experimental work our aim was to investigate the heterogeneous catalytic hydrogenation of waste lard – as a renewable agro-derived feedstock – and by mixing it to deep desulphurized gas oil stream, respectively on PtPd/USY catalyst. In the course of it, we studied the effects of the process parameters (temperature: 300–380 °C, pressure 40-60-80 bar, LHSV: 0.75–1.25 h-1, H2/feedstock rate: 600 Nm3/m3) on the quality and quantity of the products. We determined that during the co-processing of lard and desulphurized gas oil, the saturation of the aromatic content and the deoxygenation of the triglyceride part of the feedstock -isoparaffins formed - took place, respectively and at process temperatures (360–380 °C) found to be favourable by us, excellent, bio-component containing and significantly dearomatized diesel fuel blending components could be obtained. These products meet the valid diesel gas oil standard EN 590:2009+A1:2010, except for their cold flow properties.","PeriodicalId":13010,"journal":{"name":"Hungarian Journal of Industrial Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81920083","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