Research Papers Faculty of Materials Science and Technology Slovak University of Technology最新文献_第5页

Infuence of Selected Pharmaceuticals on Biogas Production in Mesophilic Anaerobic Fermentation 选定药物对中温厌氧发酵产气的影响

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0016

Kristína Šefčovičová, I. Bodík, Veronika Kvorková, J. Michálek, Andrey Korshunov, M. Soldán

{"title":"Infuence of Selected Pharmaceuticals on Biogas Production in Mesophilic Anaerobic Fermentation","authors":"Kristína Šefčovičová, I. Bodík, Veronika Kvorková, J. Michálek, Andrey Korshunov, M. Soldán","doi":"10.2478/rput-2021-0016","DOIUrl":"https://doi.org/10.2478/rput-2021-0016","url":null,"abstract":"Abstract This article deals with pharmaceutical compounds as micropollutants in anaerobic digestion of sludge from waste water treatment plant (WWTP). Part of the work included the research into presence of pharmaceuticals in different types of waters. Description of anaerobic fermentation process is also important in terms of optimal conditions. The practical aim of the investigation was preparation of a model of anaerobic fermentation of sewage sludge, where influence of pharmaceuticals on mesophilic anaerobic digestion was monitored. Wash out of micropollutants from sludge in big semicontinuous anaerobic reactors was running since October 2013. The resulting non-adapted sludge from mesophilic reactor was used since March 2014 for pharmaceuticals tests in half-a-litre glass bottles with a septum cap. The compounds of interest were diclofenac, tramadol, ibuprofen, carbamazepine and amoxicillin and their concentration in the tested sludge was 10 μg/L and 500 μg/L. The results showed that pharmaceuticals have different influence on the amount of produced biogas even if they are from the same therapeutic group. In the low concentration, the inhibition was present for diclofenac, carbamazepine and amoxicillin, at the high concentration, while diclofenac showed almost no influence. Other compounds caused a stimulative effect on the process. The mixture of all pharmaceuticals of interest in low concentration was stimulative at first, while it was inhibotory since mid-time of the test.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79074293","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

Study Into Dynamic Behaviour of the Methylene Blue Adsorption on Activated Carbon 活性炭吸附亚甲基蓝的动态行为研究

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0011

Alica Pastierová, Maroš Sirotiak

引用次数: 0

Preliminary Bioleaching Experiment of E-Waste 电子垃圾生物浸出初步试验

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0004

Alexandra Kucmanová, Zuzana Sanny, K. Gerulová, Matej Pašák, Imrich Czére

引用次数: 1

Utilization of Waste-Based Sorbents for Removal of Pharmaceuticals from Water: A Review 利用废物基吸附剂去除水中药物的研究进展

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0002

L. Blinová, Maroš Sirotiak

引用次数: 4

Degradation of Electrical Wire Sheaths By UV Radiation 紫外线辐射对电线护套的降解

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0010

Alica Pastierová, Peter Godovčin

引用次数: 0

The Use of Red Mud and Black Nickel Mud in Sorption of 3,5-Dichlorophenol 红泥和黑镍泥在吸附3,5-二氯苯酚中的应用

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0007

Veronika Kvorková, T. Ivanova, J. Michálek, M. Filipova, Kristína Šefčovičová, M. Soldán

{"title":"The Use of Red Mud and Black Nickel Mud in Sorption of 3,5-Dichlorophenol","authors":"Veronika Kvorková, T. Ivanova, J. Michálek, M. Filipova, Kristína Šefčovičová, M. Soldán","doi":"10.2478/rput-2021-0007","DOIUrl":"https://doi.org/10.2478/rput-2021-0007","url":null,"abstract":"Abstract This article discusses the use of alternative inexpensive adsorbents – wastes from the metal production - red mud (RM) and black nickel mud (BNM) and their sorption efficiency in 3,5-dichlorophenol removal. Chlorophenols are organic compounds consisting of a benzene ring, OH groups and chlorine atoms. The effects of adsorbent dose, contact time, and temperature on sorption process were monitored. The results showed that the optimal conditions to achieve the highest sorption efficiency of 3,5-dichlorophenol were reached with the use of black nickel mud at the amount (2.0 g), sorption time (1 hour) and at increased temperature (45 °C). The sorption efficiency under these conditions was 87.99 %. With increasing sorption time, the sorption efficiency decreased and desorption occurred. The same behaviour was observed using red mud of the same amount (2.0 g) at the same temperature (45 °C); however, after 1 hour, sorption efficiency was slightly reduced (85.16 %) compared to black nickel mud. Anyway, both of used materials are suitable for the use as alternative sorbents of 3,5-dichlorophenol under suitable conditions.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90923035","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

Fire Characteristics of Polyethylene Dust 聚乙烯粉尘的燃烧特性

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0006

Marián Škvarka, R. Kuracina, Zuzana Szabová

{"title":"Fire Characteristics of Polyethylene Dust","authors":"Marián Škvarka, R. Kuracina, Zuzana Szabová","doi":"10.2478/rput-2021-0006","DOIUrl":"https://doi.org/10.2478/rput-2021-0006","url":null,"abstract":"Abstract Dust is a product or by-product in many industries. To ensure effective measures of explosion prevention, it is necessary to know the fire properties of dispersed and settled dust. These parameters cannot be calculated, but can be determined on the base of measurements in standard equipment. The article deals with the measurement of fire properties of polyethylene. The values of the minimum ignition temperature of settled and dispersed dust (MIT) and the values of explosion characteristics of polyethylene dust cloud lower explosion limit (LEL), maximum pressure Pmax and maximum rate of pressure rise (dp/dt)max were measured. The measurements were performed on the equipment according to the STN EN 80079-20-2: 2016 Standard Explosive atmospheres - Part 20-2: Material characteristics - Combustible dust test methods and according to the STN EN 14034 + A1: 2011 Standard Determination of explosion characteristics of dust clouds. The MIT of the settled dust was not determined (the sample melted), the MIT of the dispersed dust was 435 °C. The maximum explosion pressure Pmax reached 7.0 bar, and the maximum rate of pressure rise dP/dt was 37.5 bar.s−1.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74774092","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

Preliminary Study Into the Decolorization of Selected Dyes By the Ozone Application 臭氧对某些染料脱色的初步研究

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0003

K. Gerulová, Zuzana Sanny, Alexandra Kucmanová, Eva Buranská

引用次数: 2

Importance of Recycling the Waste-Cables Containing Copper and PVC 含铜、聚氯乙烯废电缆回收的重要性

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2021-06-01 DOI: 10.2478/rput-2021-0001

L. Blinová, Peter Godovčin

{"title":"Importance of Recycling the Waste-Cables Containing Copper and PVC","authors":"L. Blinová, Peter Godovčin","doi":"10.2478/rput-2021-0001","DOIUrl":"https://doi.org/10.2478/rput-2021-0001","url":null,"abstract":"Abstract Urbanization, development of economy, increasing population and improved living standards and lifestyle have caused a sharp growth in waste. Inappropriate or inefficient waste disposal techniques can cause serious air, soil, and groundwater pollution, which subsequently can negatively affect the urban environment and threaten the health of residents. The goal of waste management is to move to a circular economy in which waste does not exist. If there is no possible way to reduce or reuse waste, the best solution is recycling it. Recycling brings abundant benefits on the economic and ecological levels levels, and helps reduce overall human health risk of adverse impacts. Recycling of the waste-cables which contain PVC and copper replaces the production of virgin PVC and mining of copper from copper ore, it reduces landfill solid waste pressures, saves energy and water sources, reduces emissions to environment, and also reduces negative impacts from improperly dispose of waste, etc. This paper presents an overview of recycling techniques for the waste-cables containing copper as a core and polyvinyl chloride as an insulating layer or sheath. It also lists advantages and disadvantages of these techniques and importance of recycling this type of waste.","PeriodicalId":21013,"journal":{"name":"Research Papers Faculty of Materials Science and Technology Slovak University of Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83980321","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

Comparison of Foundry Industry in Slovakia and Hungary 斯洛伐克与匈牙利铸造工业比较

Research Papers Faculty of Materials Science and Technology Slovak University of Technology Pub Date : 2020-09-01 DOI: 10.2478/rput-2020-0018

R. Šuba, M. Bajčičák, I. Bajčičáková, Š. Podhorský, J. Liska

引用次数: 0