Periodica Polytechnica Chemical Engineering最新文献_第8页

Utilization of Sugar Beet Pulp as Biosorbent for Molassigenic Metal Ions: Kinetic Study of Batch Biosorption 利用甜菜浆作为生物吸附剂处理糖化金属离子:间歇生物吸附动力学研究

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-05-26 DOI: 10.3311/ppch.19783

Lidija Peić Tukuljac, J. Krulj, L. Pezo, Nikola Maravić, J. Kojić, Z. Šereš

{"title":"Utilization of Sugar Beet Pulp as Biosorbent for Molassigenic Metal Ions: Kinetic Study of Batch Biosorption","authors":"Lidija Peić Tukuljac, J. Krulj, L. Pezo, Nikola Maravić, J. Kojić, Z. Šereš","doi":"10.3311/ppch.19783","DOIUrl":"https://doi.org/10.3311/ppch.19783","url":null,"abstract":"The sugar industry is facing problems with high amount of molassigenic metal ions remained after the purification step in sugar juice. In this investigation the application of unmodified sugar beet pulp as a weak monofunctional cation-exchange biosorbent for molassigenic metal ions (Na+, K+ and Ca2+) removal from the alkalized sugar juice was studied. The batch biosorption experiments were performed at temperature (70 °C) and pH (10.5) of alkalized sugar juice similar to industrial conditions. The highest removal efficiency was noticed for divalent Ca2+ (30.2%), while monovalent Na+ and K+ ions were removed with 10.9 and 9.1% efficiency, respectively. Biosorption equilibrium was established in 90 min for all tested metals. Sugar beet pulp characterization from the perspective of cation-exhange material was conducted. The structure of the biosorbent and an insight of the functional groups were also characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The biosorption data were analyzed using four non-linear kinetic (pseudo-first order, pseudo-second order and Elovich) and diffusion models (Weber-Morris). The time course data of biosorption processes fitted well to the pseudo-first and the pseudo-second-order kinetic models indicating ion-exchange and chemisorption as dominant mechanisms for metal ions removal from the alkalized juice. HNO3 as a desorption reagent showed the highest average molassigenic metal ions desorption efficiency (54.4%). Utilization of sugar beet biomass as cation-exchange material imposes as a potential solution for more successful sugar juice purification.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"91 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91166685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Kinetic Model Development of the Oligomerization of High Olefin Containing Hydrocarbon By-products to Clean Engine Fuels on Amberlyst Catalyst 高含烯烃副产物在Amberlyst催化剂上低聚制备清洁发动机燃料动力学模型的建立

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-05-12 DOI: 10.3311/ppch.19628

Ágnes Bárkányi, T. Varga, J. Hancsók

{"title":"Kinetic Model Development of the Oligomerization of High Olefin Containing Hydrocarbon By-products to Clean Engine Fuels on Amberlyst Catalyst","authors":"Ágnes Bárkányi, T. Varga, J. Hancsók","doi":"10.3311/ppch.19628","DOIUrl":"https://doi.org/10.3311/ppch.19628","url":null,"abstract":"Nowadays, since the demand for engine fuels is continuously changing, in petroleum refineries, increasing the flexibility of gasoline/middle distillate is still an important issue, e.g. by oligomerizing light olefins (3–6 carbon atoms). The aim of our work was to develop a valid kinetic model based on the extended Eley-Rideal mechanism to describe the oligomerization of the olefin content of light naphtha by fluidized catalytic cracking (FCC) on an ion-exchange resin. Experiments were carried out in a fixed-bed tubular reactor at temperatures of between 80 and 130 °C with liquid hourly space velocities (LHSV) of between 0.5 and 2.0 1/h using Amberlyst® 15 as a catalyst. The oligomerization process was characterized based on the composition of products determined by gas chromatography. The conversion of olefins and the selectivity of the oligomerization reactions forming C8-11 and C12+ hydrocarbons (C8-11 and C12+ selectivity; unit: relative %) were dependent on factors that determine the reactor performance in order to identify the kinetic model parameters. Given that the developed reactor model described the measured data reasonably accurately, it can be used in terms of the optimal design of an industrial oligomerization reactor.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"48 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89135996","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolved Gases and Unified Kinetic Model for Low-temperature Thermal Decomposition of Rice Straw Hydrolysis Residue for Possible Value Addition 稻秆水解渣低温热分解的释出气体及统一动力学模型

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-05-11 DOI: 10.3311/ppch.19673

Himadri Roy Ghatak

引用次数: 0

Conceptual Design of Methyl Chloride Production Processes: A Review 氯甲烷生产工艺概念设计综述

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-05-10 DOI: 10.3311/ppch.19556

Vikrath Pridhvi Yandrapu, N. Kanidarapu

{"title":"Conceptual Design of Methyl Chloride Production Processes: A Review","authors":"Vikrath Pridhvi Yandrapu, N. Kanidarapu","doi":"10.3311/ppch.19556","DOIUrl":"https://doi.org/10.3311/ppch.19556","url":null,"abstract":"The worldwide demand for methyl chloride is continuously increasing because of its industrial applications and the rapid development of the electronics and automotive sectors. Various chemical intermediates and end products from methyl chloride are demanding the increased production of this chemical product. Chlorination of methane and the hydrochlorination of methanol are the industrially existing processes. The stringent environmental regulations and the competition in the market demand the search for alternative processes or process modifications to improve the efficiency of the existing process plants. To meet these requirements continuous research is going on to improve the process efficiencies in terms of yield and environmental concerns. In this research, industrially existing processes and the recent production trends information is provided systematically. To fill the gap between the chemists and the process engineers conceptual design information is provided for both the industrially existing processes and the recent production trends. For simplicity, production processes are divided into catalytic and non-catalytic processes. A total of 11 conceptual process designs are identified from the systematic review and for all the processes conceptual designs are provided. Detailed discussions on recent developments on methyl chloride production processes, advantages, and the process challenges of various technologies are also presented.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"39 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86282981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Current Status of Biological Biogas Upgrading Technologies 生物沼气改造技术现状

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-31 DOI: 10.3311/ppch.19537

B. Lóránt, G. Tardy

{"title":"Current Status of Biological Biogas Upgrading Technologies","authors":"B. Lóránt, G. Tardy","doi":"10.3311/ppch.19537","DOIUrl":"https://doi.org/10.3311/ppch.19537","url":null,"abstract":"To limit global warming, ratio of renewable sources in the energy mix has to be considerably raised in the following years. While application of e.g. wind and solar power usually generates fluctuations in the electric grid, biogas produced in anaerobic processes is an easy-to-store renewable energy source. Raw biogas contains generally ~55–70% methane and ~30–45% carbon-dioxide. Although raw biogas can be utilized directly for combustion or combined heat and power generation (CHP), its methane content can be raised to >95% by upgrading technologies, thus it can be valorized. By upgrading and cleaning, the quality of the upgraded biogas may reach the quality of the natural gas and it may be injected to the gas grid or used as fuel for devices optimized for natural gas. Several physico-chemical upgrading methods are available on the market (e.g. high pressure water scrubbing, pressure swing adsorption, membrane technology, etc.) to remove the carbon-dioxide content of the biogas. Opposite to the physico-chemical methods, where basically the CO2 removal is the main goal, in biological biogas upgrading technologies microorganisms are applied to convert the carbon-dioxide content of the biogas to methane (chemoautotrophic upgrading), or algal biomass (photoautotrophic upgrading). The expectations are high towards biological biogas upgrading technologies in the field of energy storage linked with carbon-dioxide capture. In this paper, latest research results concerning biological biogas upgrading are summarized, viability and competitiveness of this technology is discussed together with the most important future development directions.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"53 2","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72488783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Evaluation of an Open-source Chemical Process Simulator Using a Plant-wide Oil and Gas Separation Plant Flowsheet Model as Basis 基于全厂油气分离装置流程模型的开源化工过程模拟器评价

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-30 DOI: 10.3311/ppch.19678

A. Andreasen

{"title":"Evaluation of an Open-source Chemical Process Simulator Using a Plant-wide Oil and Gas Separation Plant Flowsheet Model as Basis","authors":"A. Andreasen","doi":"10.3311/ppch.19678","DOIUrl":"https://doi.org/10.3311/ppch.19678","url":null,"abstract":"In this paper, a detailed evaluation of the open source process simulator DWSIM is presented. Using a previously published simulation model of an oil and gas separation plant, the results obtained with DWSIM are compared to a commercial process simulator widely used in the industry. The modelled flow scheme comprises a vast number of unit operations including separators (flash vessels), valves, splitters, mixers, compressors, heat exchangers, pumps and recycles (tear streams). The results obtained with DWSIM both for characterization of the inlet fluid as well as for a single operating state for the entire process, compare very well with the data obtained using a commercial tool. A rigorous comparison is made and generally, compared results are within 1% in deviation with a few exceptions. Further, an elaborate comparison is made for over 90 simulations with different settings where 10 independent variables are randomly varied over a wide range. Again, good agreement is found between the two tools. The results are very encouraging and provide fidelity in the use of the investigated open source process simulation tools in a professional environment.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"16 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80855329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of Nanostructured Photocatalysts for Dye Degradation: A Review 纳米结构光催化剂在染料降解中的应用综述

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-29 DOI: 10.3311/ppch.18885

V. Ruíz-Santoyo, Beatriz A. Andrade-Espinoza, R. Romero-Toledo, L. M. Anaya-Esparza, Zuamí Villagrán, Antonio Guerra-Contreras

引用次数: 8

Diisopropyl Malonate as Acylating Agent in Kinetic Resolution of Chiral Amines with Lipase B from Candida antarctica 丙二酸二异丙酯酰基化剂在南极假丝酵母脂肪酶B动力学拆分手性胺中的应用

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-22 DOI: 10.3311/ppch.19521

József Szemes, Ágnes Malta-Lakó, R. Tóth, L. Poppe

引用次数: 1

The Application of Membrane Technology in the Concentration and Purification of Plant Extracts: A Review 膜技术在植物提取物浓缩纯化中的应用综述

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-21 DOI: 10.3311/ppch.19487

Areej Alsobh, M. Zin, G. Vatai, Szilvia Bánvölgyi

{"title":"The Application of Membrane Technology in the Concentration and Purification of Plant Extracts: A Review","authors":"Areej Alsobh, M. Zin, G. Vatai, Szilvia Bánvölgyi","doi":"10.3311/ppch.19487","DOIUrl":"https://doi.org/10.3311/ppch.19487","url":null,"abstract":"The obtained plants and by-products during food and agricultural manufacturing processes are sources for many bioactive components that attract industrial and academic interest. The essential method of obtaining these bioactive components is the extraction process by using solvents. The efficiency of the extraction processes mainly depends on the choice and selectivity of these solvents. However, the most challenging step is recovering the components from the solvent to obtain the active part and pure products. In this recovery process, many methods were applied, such as evaporation and adding assistant chemicals, which had many downsides as energy consumption and unwanted product. Consequently, membrane technology such as microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), membrane distillation (MD), and osmosis distillation (OD) has been applied as a new approach in concentrating plants extract. Since this new approach has proved its efficiency in this field, the main objective of this paper is to provide a review of academic studies that have addressed using different membrane techniques to concentrate the plant extracts.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83697091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Investigation of the Role of Arabinoxylan on Dough Mixing Properties in Native and Model Wheat Dough Systems 阿拉伯木聚糖对天然和模型小麦面团系统中面团混合特性的影响研究

IF 1.3 4区工程技术

Periodica Polytechnica Chemical Engineering Pub Date : 2022-03-08 DOI: 10.3311/ppch.19019

R. Németh, Rebeka Fekete-Papp, Krisztina Orosz, E. Jaksics, Marietta Klaudia Juhászné Szentmiklóssy, Kitti Török, S. Tömösközi

{"title":"Investigation of the Role of Arabinoxylan on Dough Mixing Properties in Native and Model Wheat Dough Systems","authors":"R. Németh, Rebeka Fekete-Papp, Krisztina Orosz, E. Jaksics, Marietta Klaudia Juhászné Szentmiklóssy, Kitti Török, S. Tömösközi","doi":"10.3311/ppch.19019","DOIUrl":"https://doi.org/10.3311/ppch.19019","url":null,"abstract":"The aim of this work was to investigate and compare the effect of arabinoxylan (AX) addition and incorporation on the mixing properties of native and model doughs of different wheat types, to get more insight into the role of AXs in dough formation. In the experiments, flour samples of a wheat variety (normal starch type) and two wheat lines (waxy and high amylose) were used. Model doughs were composed by fractionating flours into starch and gluten followed by subsequent reconstitution according to their original gluten to starch ratio. AX isolate was dosed in 1% and 3% to the native and model doughs. Incorporation of AX was performed by reduction and re-oxidation of wheat dough with dithiothreitol (DTT) and KIO3, respectively. Model doughs behaved similarly to native doughs thus were found appropriate for the model experiments. In general, higher AX level resulted higher dough consistency in every dough system compared to the corresponding base dough, however, the extent of the growth was different. In case of assumed AX incorporation only small differences were found in the mixing properties compared to AX addition. Based on sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS–PAGE) analysis, some minor but clear changes were observed in the protein subunit profile of AX containing doughs compared to base doughs, but no difference was identified between doughs made by AX addition and AX incorporation. However, the characterization of the gluten-AX interactions requires more detailed investigation, in which a pure gluten-starch-AX model system can offer a valuable, well-defined matrix.","PeriodicalId":19922,"journal":{"name":"Periodica Polytechnica Chemical Engineering","volume":"7 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2022-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89730380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0