Journal articles: 'Purification biogas technologies'

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Awe, Olumide Wesley, Yaqian Zhao, Ange Nzihou, Doan Pham Minh, and Nathalie Lyczko. "A Review of Biogas Utilisation, Purification and Upgrading Technologies." Waste and Biomass Valorization 8, no. 2 (January 9, 2017): 267–83. http://dx.doi.org/10.1007/s12649-016-9826-4.

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Gaj, Kazimierz. "Adsorptive Biogas Purification from Siloxanes—A Critical Review." Energies 13, no. 10 (May 20, 2020): 2605. http://dx.doi.org/10.3390/en13102605.

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Siloxanes are among the most technologically troublesome trace compounds present in biogas. As a result of their combustion, hard-to-remove sediments are formed, blocking biogas energy processing devices and reducing the efficiency of biogas plants. The purpose of this study was to help investors and designers to choose the optimal technology for the adsorptive removal of volatile methylsiloxanes (VMSs) from biogas and to identify adsorbents worth further development. This paper critically reviews and discusses the state-of-the-art technologies for the adsorption removal of siloxanes from biogas, indicating potentially beneficial directions in their development and deficiencies in the state of knowledge. The origin of VMSs in biogas, their selected physicochemical properties, technological problems that they can cause and their typical versus limit concentrations in biogases are presented. Both the already implemented methods of adsorptive VMSs removal from landfill and sewage gases and the ones being under development are verified and systematized. The parameters and effectiveness of adsorption processes are discussed, and individual adsorbents are compared. Possible ways of regenerating spent adsorbents are evaluated and prospects for their application are assessed. Finally, zeolite-based adsorbents—which can also be used for biogas desulfurization—and adsorbents based on polymer resins, as being particularly active against VMSs and most amenable to multiple regeneration, are identified.

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Chernysh, Yelizaveta, Magdalena Bálintová, and Viktoriia Chubur. "Modeling of hydrogen sulfide removal under biomethane production in the concept of renewable energy potential growth of Ukraine." E3S Web of Conferences 280 (2021): 05001. http://dx.doi.org/10.1051/e3sconf/202128005001.

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Today, the global trend in the development of renewable energy sources is the implementation of integrated processing of organic waste with the production of biogenic gases such as biomethane. In this case, an essential focus is the study of biogas purification processes to methane. This paper focuses on the process of modeling biochemical purification of biogas from hydrogen sulfide to develop the direction of biomethane production. Simulation of hydrogen sulfide bio-oxidation process with the use of granulated carrier based on phosphogypsum was conducted using experimental data from previous studies to verify the adequacy of the proposed mathematical model. Thus, to implement the process of phosphogypsum utilization in technological systems of biogas purification, it is important to consider the level of bioactivity in the immobilization of bacteria on the loading surface of phosphogypsum and the degree of biotransformation of phosphogypsum components in the oxidation of carbon dioxide and hydrogen sulfide impurities to achieve the highest ecological effect. Also, the use of overlay visualization allowed to form the main clusters of development of research potential in the field of biogas technologies for Ukraine.

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Szolyák, Zsuzsanna, and István Szunyog. "Investigation of amine based carbon-dioxide and hydrogen-sulphide separation technologies for biogases." Multidiszciplináris tudományok 11, no. 1 (2021): 115–22. http://dx.doi.org/10.35925/j.multi.2021.1.12.

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Biogas has been used since the beginning of the 19th century, which is a gaseous material formed during the anaerobic fermentation of organic substance. It is extremely versatile in its use, it is mostly used to produce heat and electricity, but it can also be used as a motor fuel. To produce these gases we can use organic materials and wastes from agriculture, food industry and communal sector. When the produced biogas is utilized, less CO2 is released into the environment than with other primary energy sources, it has zero emissions for the whole “carbon cycle” and can therefore be considered positive. The calorific value of biogas is much lower than in the case of natural gas, however, we can increase the energy content by compression and decarbonisation, which can even produce a biomethane which can be equivalent to natural gas. Depending on the feedstock, the methane content of the biogas can change over a very wide range, and the gas mixture can also contain other gases and water vapor. Thus, in order to improve these parameters, undesirable components must be removed from the gas. Several methods can be used to remove unwanted components of the biogas, however, this study focuses exclusively on amino purification technology.

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Krusir, Galina, Olga Sagdeeva, Alfred Tsykalo, Yuliia Vilhovska, and Tatyana Shpyrko. "Improvement of purification technology of the liquid waste from fermentation production." Environmental Problems 6, no. 1 (2021): 7–14. http://dx.doi.org/10.23939/ep2021.01.007.

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One of the areas of waste disposal of fermentation industries is anaerobic fermentation and biogas production, which becomes increasingly attractive for researchers not only because of the global energy crisis but also the environmental one. Biogas production is based on methane fermentation fundamentally different from other types of fermentation, which creates certain difficulties in its implementation on a large scale. Therefore, the development of innovative energy and resource-saving technologies for the processing of liquid waste from fermentation industries is an urgent task for the development of the domestic food industry. The aim of the work is to develop, theoretically substantiate and experimentally test the technology of processing liquid waste from fermentation plants.

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Negro, Viviana, and Davide Mainero. "An integrated approach to energy use: the case study of the ACEA site." E3S Web of Conferences 119 (2019): 00023. http://dx.doi.org/10.1051/e3sconf/201911900023.

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Currently, ACEA utilises biogas obtained from the treatment of the organic fraction of municipal solid waste for thermal and electric energy recovery through endothermic engines (3 MW, in total). By 2020, the biogas produced at the site will no longer be used as a fuel for the combined heat and power units, but it is expected to feed a purification system in order to obtain a flow of biomethane to be injected into the natural gas network. This is part of the Italian strategy to achieve the Horizon 2020 European targets aimed at promoting the renewable production of transport fuels. In order to encourage sustainability and innovative prototype technologies, ACEA has also been involved in some European research projects, in particular for the conversion of biogas into other energy carriers. furthermore, ACEA ha recently built a flexible experimental platform that can used for the validation step of prototypes in an industrial field.

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Florio, Ciro, Gabriella Fiorentino, Fabiana Corcelli, Sergio Ulgiati, Stefano Dumontet, Joshua Güsewell, and Ludger Eltrop. "A Life Cycle Assessment of Biomethane Production from Waste Feedstock Through Different Upgrading Technologies." Energies 12, no. 4 (February 22, 2019): 718. http://dx.doi.org/10.3390/en12040718.

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Upgrading consists of a range of purification processes aimed at increasing the methane content of biogas to reach specifications similar to natural gas. In this perspective, an environmental assessment, based on the Life Cycle Assessment (LCA) method, of different upgrading technologies is helpful to identify the environmental characteristics of biomethane and the critical steps for improvement. The aim of this work is to conduct an LCA of biomethane production from waste feedstock, using the SimaPro software. The study focuses on the comparison of several upgrading technologies (namely, membrane separation, cryogenic separation, pressure swing adsorption, chemical scrubbing, high pressure water scrubbing) and the on-site cogeneration of electricity and heat, including the environmental benefits deriving from the substitution of fossil-based products. The results show a better environmental performance of the cogeneration option in most of the impact categories. The Fossil resource scarcity is the impact category which is mainly benefited by the avoided production of natural gas, with savings of about 0.5 kg oil eq/m3 of biogas for all the investigated technologies, with an average improvement of about 76% compared to conventional cogeneration. The results show that the membrane upgrading technology is slightly more environmentally convenient than the other upgrading technologies.

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Guo, Pengfei, Yuejin Zhang, and Yongjun Zhao. "Biocapture of CO2 by Different Microalgal-Based Technologies for Biogas Upgrading and Simultaneous Biogas Slurry Purification under Various Light Intensities and Photoperiods." International Journal of Environmental Research and Public Health 15, no. 3 (March 15, 2018): 528. http://dx.doi.org/10.3390/ijerph15030528.

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Wang, Gang, Zhongshen Zhang, and Zhengping Hao. "Recent advances in technologies for the removal of volatile methylsiloxanes: A case in biogas purification process." Critical Reviews in Environmental Science and Technology 49, no. 24 (July 3, 2019): 2257–313. http://dx.doi.org/10.1080/10643389.2019.1607443.

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Sun, Shiqing, Changwei Hu, Shumei Gao, Yongjun Zhao, and Jie Xu. "Influence of three microalgal‐based cultivation technologies on different domestic wastewater and biogas purification in photobioreactor." Water Environment Research 91, no. 8 (April 2019): 679–88. http://dx.doi.org/10.1002/wer.1097.

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Masruroh, Kuni, Rochim Bakti Cahyono, Imam Prasetyo, and Teguh Ariyanto. "The Effect of Amine Types on Breakthrough Separation of Methane on Biogas." International Journal of Renewable Energy Development 10, no. 2 (December 15, 2020): 149–55. http://dx.doi.org/10.14710/ijred.2021.33514.

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Methane (CH4) and carbon dioxide (CO2) are the main components of a renewable energy source of biogas. Separation of CO2 from biogas is significantly important to improve biogas performance, due to heating value in biogas depends on the concentration of methane. One of the gas separation technologies that has been widely used in chemical industries is carbon molecular sieve (CMS). This research explores the potential of CMS for biogas purification. CMS was prepared by modification of palm kernel shell-derived porous carbon using amine groups such as monoethanolamine (MEA), 2-amino-2-methyl-1-propanol (AMP), and diethanolamine (DEA). The effect of amine types on the separation parameters was studied by using a breakthrough experiment to obtain the most potential CMS materials. The methods of this research include the process of carbon oxidation using hydrogen peroxide, impregnation with an amine group, characterization of the CMS material obtained, CO2 and CH4 gas separation testing with a breakthrough system. The CMS was characterized by using N2 sorption analysis, fourier transform infrared spectroscopy, and scanning electron microscopy. The breakthrough experiment showed that CMS-MEA had the highest performance for separating CO2 and CH4 gases. In addition, the results also showed that loading of amine groups on carbon caused an increase in the uptake capacity of CO2, and the highest capacity was achieved by CMS-MEA of 13.2 mg/g.

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KOVALEV, DMITRIY, and ANDREY KOVALEV. "RESEARCH OF THE PROCESS OF CLEANING BIOGAS FROM SULFUR COMPOUNDS USING THE VORTEX LAYER APPARATUS." Elektrotekhnologii i elektrooborudovanie v APK 4, no. 41 (December 2020): 63–67. http://dx.doi.org/10.22314/2658-4859-2020-67-4-63-67.

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The use of biogas for the operation of recycling equipment in its pure form is unacceptable due to the high content of sulfur compounds (hydrogen sulfide), which leads to corrosion of metal parts of the equipment contacting with biogas and reduces its service life. The article considers various ways of cleaning biogas from sulfur compounds. (Research purpose) The research purpose is in studying the process of biogas purification from sulfur compounds by sulfonating in the vortex layer apparatus. (Materials and methods) The laboratory of bioenergetic and supercritical technologies of VIM created an experimental device of a vortex magnetic layer. Authors used information research methods, including standard analytical methods of modern system approach, processing and analysis. (Results and discussion) The amount of hydrogen sulfide in the biogas was sharply reduced and when the gas stayed in the working chamber for 5 minutes, it did not exceed 20 parts per million. The concentration of carbon dioxide decreased slightly. The water in the working chamber of the installation serves as a solvent for incoming gases, and the ferromagnetic particles, when worn out, form a fine (20-50 micrometers) iron powder, which reacts chemically with dissolved hydrogen sulfide to form iron sulfide. Fast-rotating ferromagnetic particles create a large contact surface of liquid and gas, which improves the absorption of hydrogen sulfide and carbon dioxide. (Conclusions) It is possible to purify biogas from sulfur compounds by sulfonating in the vortex layer apparatus. The article proposes a method for improving the cleaning process by increasing the pressure and reducing the temperature of water in the working chamber of the vortex layer apparatus.

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Khabibullin, Rustem, Olga Ivanchenko, Andrey Petrov, and Rahat Bhat. "Optimization of the process of anaerobic-aerobic purification of waste waters of food production using the spatial separation of stages." MATEC Web of Conferences 245 (2018): 18003. http://dx.doi.org/10.1051/matecconf/201824518003.

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The advanced energyand resource saving technologies for purification of industrial waste waters from the food production include both anaerobic biotechnologies, and the combined ones, which include anaerobic and aerobic purification steps. They possess such advantages as economic efficiency, high purification efficiency, minimal formation of excess sludge and ability to obtain alternative energy carrier - biogas. The aim of this investigation was to perform optimization of the process of anaerobic-aerobic biological purification of wastewaters from the milk treatment enterprise. During our investigation we have studied relations between the efficiency of the process of anaerobic-aerobic biological purification of wastewaters of the milk treatment enterprise and specific organic load. We investigated influence of the spatial separation of the anaerobic step of purification with directed succession of the microbial community, which performs the sequence of destruction of the organic compound on the process efficiency. It was shown, that the preliminary anaerobic purification of wastewaters from the milk treatment enterprise allows one to significantly reduce organic load at the aerobic stage of the purification facilities and remove up to 85% of the organic compound. With increase of the specific organic load from 1.4 up to 2.8 kg COD·m -3·days-1 we see a drastic improvement of the efficiency characteristics both for anaerobic and aerobic stages. The redox-potential of the fermentation medium depends on the metabolitic activity of the microbial community and might be used as an efficiency characteristics for destruction of the organic compound at the anaerobic stage, and as an indicator for the oxygen saturation of the medium at the aerobic stage of purification.

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Jimenez Escobedo, Manuel, and Augusto Castillo Calderón. "Microalgal biomass with high potential for the biofuels production." Scientia Agropecuaria 12, no. 2 (June 1, 2021): 265–82. http://dx.doi.org/10.17268/sci.agropecu.2021.030.

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The study of biofuels continues in constant development, for five decades. This article summarizes the analysis of several recent scientific publications, related to third generation biofuels using microalgae. An overview of biofuels and their classification, the theoretical bases of microalgae, techniques for their cultivation, harvesting and pretreatment of their biomass are presented. Promising technologies for obtaining biofuels of great potential worldwide demand are also briefly described, considering the technical characteristics of the process, depending on the microalgae species that have the highest yields and productivity for each type of biofuel:Biodiesel (extraction of lipids, transesterification and purification), ethanol (hydrolysis of sugars, fermentation and purification) and biogas (anaerobic digestion).Most studies are focused on the production of lipids, being Chlorella vulgaris, Nanochloropsis sp. and Botryococcus braunii(A) the most used microalgae to obtain biodiesel. However, there are few studies focused on the production of microalgal biomass toproduce bioethanol, thus, the microalgae Porphyridium cruentumand Spirogira sp. they could be used to produce bioethanol, with the advantage of not containing lignin. Biogas is produced by anaerobic biodigestion of microalgal biomass residues in biorefineries, but its commercial production is very limited due to high production costs and because there are other economically very competitive biomasses. The need to produce biofuels using microalgal biomass is reaching a greater boom, the transcendental proposal being the launching of a biorefinery, mainly focused on the optimal production of microalgal biomass as the main key to the entire process.

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Feng, Dan, Shan Dan Zhou, and Yuan Yuan Miao. "Application of Bioenergy in Sweden and its Revelation to China." Advanced Materials Research 608-609 (December 2012): 249–53. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.249.

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Through implementation the positive tax policy and application the “Green Electricity Certificates System”, the bioenergy production and application technologies came to maturity gradually in Sweden: Integrated Forest Biorefinery " produced lots of bioenergy in the form of heat, electricity and fuel particles ;Many heat and power plants used energy plant Salix as biomass fuels, and the plant ash was filled back into Salix field for air purification; City garbage and food industry wastes were produced the biogas for city public transport system. At present, the bioenergy consumption accounts for 1/3 of the total energy consumption. The Bioenergy application in Sweden has a profound and revelatory meaning in the problems of Chinese energy reconstruction, energy saving and emission reduction, area bioenergy production and bioenergy application.

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Golub, N., M. Potapova, M. Shinkarchuk, and O. Kozlovets. "BIOGAS PRODUCTION IN THE CONCENTRATED DISTILLERY WASTEWATER TREATMENT." Alternative Energy and Ecology (ISJAEE), no. 25-30 (December 7, 2018): 51–59. http://dx.doi.org/10.15518/isjaee.2018.25-30.051-059.

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The paper deals with the waste disposal problem of the alcohol industry caused by the widespread use of alcohol as biofuels. In the technology for the production of alcohol from cereal crops, a distillery spent wash (DSW) is formed (per 1 dm3 of alcohol – 10–20 dm3 DSW), which refers to highly concentrated wastewater, the COD value reaches 40 g O2/dm3. Since the existing physical and chemical methods of its processing are not cost-effective, the researchers develop the processing technologies for its utilization, for example, an anaerobic digestion. Apart from the purification of highly concentrated wastewater, the advantage of this method is the production of biogas and highquality fertilizer. The problems of biotechnology for biogas production from the distillery spent wash are its high acidity–pH 3.7–5.0 (the optimum pH value for the methanogenesis process is 6.8–7.4) and low nitrogen content, the lack of which inhibits the development of the association of microorganisms. In order to solve these problems, additional raw materials of various origins (chemical compounds, spent anaerobic sludge, waste from livestock farms, etc.) are used. The purpose of this work is to determine the appropriate ratio of the fermentable mixture components: cosubstrate, distillery spent wash and wastewater of the plant for co-fermentation to produce an energy carrier (biogas) and effective wastewater treatment of the distillery. In order to ensure the optimal pH for methanogenesis, poultry manure has been used as a co-substrate. The co-fermentation process of DSW with manure has been carried out at dry matter ratios of 1:1, 1:3, 1:5, 1:7 respectively. It is found that when the concentration of manure in the mixture is insufficient (DSW/manure – 1:1, 1:3), the pH value decreases during fermentation which negatively affects methane formation; when the concentration of manure in the mixture is increased (DSW/manure – 1:5, 1:7), the process is characterized by a high yield of biogas and methane content. The maximum output of biogas with a methane concentration of 70 ± 2% is observed at the ratio of components on a dry matter “wastewater: DSW: manure” – 0,2:1:7 respectively. The COD reduction reaches a 70% when using co-fermentation with the combination of components “wastewater: DSW: manure” (0,3:1:5) respectively.

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Esteves, I. A. A. C., G. M. R. P. L. Sousa, R. J. S. Silva, R. P. P. L. Ribeiro, M. F. J. Eusébio, and J. P. B. Mota. "A Sensitive Method Approach for Chromatographic Analysis of Gas Streams in Separation Processes Based on Columns Packed with an Adsorbent Material." Advances in Materials Science and Engineering 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/3216267.

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A sensitive method was developed and experimentally validated for the in-line analysis and quantification of gaseous feed and product streams of separation processes under research and development based on column chromatography. The analysis uses a specific mass spectrometry method coupled to engineering processes, such as Pressure Swing Adsorption (PSA) and Simulated Moving Bed (SMB), which are examples of popular continuous separation technologies that can be used in applications such as natural gas and biogas purifications or carbon dioxide sequestration. These processes employ column adsorption equilibria on adsorbent materials, thus requiring real-time gas stream composition quantification. For this assay, an internal standard is assumed and a single-point calibration is used in a simple mixture-specific algorithm. The accuracy of the method was found to be between 0.01% and 0.25% (-mol) for mixtures of CO2, CH4, and N2, tested as case-studies. This makes the method feasible for streams with quality control levels that can be used as a standard monitoring and analyzing procedure.

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Lohani, Sunil Prasad, Suraj Pandey, and Bivek Baral. "Biogas Purification, Compression and Storage." Linnaeus Eco-Tech, June 8, 2017, 564–72. http://dx.doi.org/10.15626/eco-tech.2010.060.

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Municipal solid waste in the Kathmandu Valley and emerging cities has been a burden for the government of Nepal for over a decade. Nepal, these days, is notorious in illegal dumping of solid waste on riverbanks and crossroads at urban cities creating a serious environmental and´ public health problem besides destroying the city’s beauty and hindering cultural and religious activities. Time and again, conflict of poorly managed landfill sites have arisen which led to halt of solid waste collection in Kathmandu valley for several days in a place where daily solid waste generation is about 500 tones of which 69 percent is of organic materials and 24 percent recyclable materials (plastics, paper, metal, glass). In order to solve the solid waste management problem in urban cities, the country failed to introduce any reliable and sustainable technology. However, among several waste management technologies available, biogas production may prove to be viable and sustainable waste to energy conversion technology. But biogas can supply energy only near to the plant, which limits its wide spread application and, therefore, bottling of biogas is a must to supply it in and around the cities and villages. In this paper we evaluate the model used in bio-based energy laboratory, Kathmandu University to upgrade and bottle biogas in a cylinder. It is found that the biogas purification, compression and storage system of Kathmandu University has net energy output 180 kWhth per cycle.

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Amieiro Fonseca, Alvaro, Richard H. Heyn, Morten Frøseth, Joris W. Thybaut, Jeroen Poissonnier, Andreas Meiswinkel, Hans-Jörg Zander, and Jérôme Canivet. "A Disruptive Innovation for Upgrading Methane to C3 Commodity Chemicals." Johnson Matthey Technology Review, 2020. http://dx.doi.org/10.1595/205651321x16051060155762.

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There are large reserves of stranded natural gas waiting for a viable solution and smaller scale biogas opportunities offering methane feedstocks rich in CO2, for which utilization can become an innovation advantage. C123 will evaluate how to best valorise these unexploited methane resources by an efficient and selective transformation into easy- to- transport liquids such as propanol and propanal that can be transformed further into propylene and fed into the 6B$ polypropylene market. In C123 the selective transformation of methane to C3 hydrocarbons will be realized via a combination of Oxidative Conversion of Methane (OCoM) and hydroformylation (HF), including thorough smart process design and integration under industrial relevant conditions. All C123 technologies exist at TRL 3, and the objectives of C123 will result in the further development of this technology to TRL 5 with a great focus on the efficient the overall integration of not only the reaction steps but also the required purification and separation steps, incorporating the relevant state-of-the-art engineering expertise.

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Ivanov, Dimitrii V. "Volga State University Of Technology." Linnaeus Eco-Tech, January 23, 2017. http://dx.doi.org/10.15626/eco-tech.2012.001.

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Volga State University of Technology was established in 1932. It’s Russia's leading university in areas of: predicting the use and protection of natural resources in order to prevent the negative effects, and methods of evaluation of the biological productivity of forest plantations using remote sensing data, the development of new energy-saving technologies and equipment for harvesting and processing of timber and non-timber forest resources; aerobic , anaerobic and vermitechnological organic waste, use only renewable resources, the creation of new technological installations for production and purification of biogas, the creation of modern technological solutions for greenhouses with autonomous energy supply based on local renewable energy, the creation of device-analytical systems for the study and modeling of membrane contactor and gas separation membrane-sorption processes in relation to the processes of organic waste and produce biogas fuel, new technologies of organic waste and non-fertilizer in green building, new technologies reclamation of disturbed areas, reforestation, creation of objects in areas of intensive logging and taken out of use of agricultural land under the Kyoto Protocol. The strategic development program of the University received funding of the Ministry of Education and Science of the Russian Federation. To improve the efficiency of research in 2001, the University established the Center for collective use "Ecology, biotechnology, and the processes of generating clean energy" with unique equipment, which is funded under the Federal Target Program "Research and development on priority directions of scientific-technological complex of Russia in 2007-2013 ". To concentrate educational resources for the training of skilled workers , vocational training specialists, specialists with higher education in the forestry sector at the university was established resource center of professional education, funded by the Federal Program of Education Development for 2011-2015. The main focus is on the development of innovation infrastructure in the University of the , favorable conditions for the development of small innovative companies. In 2011, the University has won the competition for funding under the decree of the Government of the Russian Federation № 219 "On state support of innovation infrastructure in the federal educational institutions of higher education." The university holds a lot of projects funded under the Federal Target Program "Scientific and scientific-pedagogical personnel of innovative Russia in 2009-2013", including a project to develop a high school student self-management.

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Komesu, Andrea, Maria Regina Wolf Maciel, and Rubens Maciel Filho. "Separation and Purification Technologies for Lactic Acid – A Brief Review." BioResources 12, no. 3 (August 1, 2017). http://dx.doi.org/10.15376/biores.12.3.6885-6901.

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Journal articles on the topic 'Purification biogas technologies'

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