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https://www.readbyqxmd.com/read/28631029/syngas-biorefinery-and-syngas-utilization
#1
Sashini De Tissera, Michael Köpke, Sean D Simpson, Christopher Humphreys, Nigel P Minton, Peter Dürre
Autotrophic acetogenic bacteria are able to capture carbon (CO or CO2) through gas fermentation, allowing them to grow on a spectrum of waste gases from industry (e.g., steel manufacture and oil refining, coal, and natural gas) and to produce ethanol. They can also consume syn(thesis) gas (CO and H2) made from the gasification of renewable/sustainable resources, such as biomass and domestic/agricultural waste. Acetogenic gas fermentation can, therefore, produce ethanol in any geographic region without competing for food or land...
June 20, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/28623020/two-step-gasification-of-cattle-manure-for-hydrogen-rich-gas-production-effect-of-biochar-preparation-temperature-and-gasification-temperature
#2
Ya Xin, Hongliang Cao, Qiaoxia Yuan, Dianlong Wang
Two-step gasification process was proposed to dispose cattle manure for hydrogen rich gas production. The effect of temperature on product distribution and biochar properties were first studied in the pyrolysis-carbonization process. The steam gasification of biochar derived from different pyrolysis-carbonization temperatures was then performed at 750°C and 850°C. The biochar from the pyrolysis-carbonization temperatures of 500°C had high carbon content and low volatiles content. According to the results of gasification stage, the pyrolysis-carbonization temperature of 500°C and the gasification temperature of 850°C were identified as the suitable conditions for hydrogen production...
June 13, 2017: Waste Management
https://www.readbyqxmd.com/read/28601769/simultaneous-removal-of-organic-matter-and-salt-ions-from-coal-gasification-wastewater-ro-concentrate-and-microorganisms-succession-in-a-mbr
#3
Shengyong Jia, Yuxing Han, Haifeng Zhuang, Hongjun Han, Kun Li
A lab-scale membrane bioreactor (MBR) with intermittent aeration was operated to treat the reverse osmosis concentrate derived from coal gasification wastewater. Results showed intermittent aeration represented slight effect on organic matter reduction but significant effect on nitrite and nitrate reduction, with 6h aeration and 6h non-aeration, removal efficiencies of organic matter, chloride, sulfate, nitrite and nitrate reached 48.35%, 40.91%, 34.28%, -36.05% and 64.34%, respectively. High-throughput sequencing showed a microorganisms succession from inoculated activated sludge (S1) to activated sludge in MBR (S2) with high salinity...
May 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28601579/screw-pyrolysis-technology-for-sewage-sludge-treatment
#4
Marco Tomasi Morgano, Hans Leibold, Frank Richter, Dieter Stapf, Helmut Seifert
Sewage sludge quantities have grown continuously since the introduction of the European Directive (UWWTD 91/271/EEC) relating to the treatment of urban wastewater. In the present, most of the sewage sludge is combusted in single fuels incineration plants or is co-fired in waste incineration or coal power plants. The combustion of sewage sludge is a proven technology. Other treatments, such as fluidized bed gasification, were successfully adopted to produce suitable syngas for power production. Besides, the number of large wastewater treatment plants is relatively small compared to the local rural ones...
June 7, 2017: Waste Management
https://www.readbyqxmd.com/read/28599799/dry-syngas-purification-process-for-coal-gas-produced-in-oxy-fuel-type-integrated-gasification-combined-cycle-power-generation-with-carbon-dioxide-capturing-feature
#5
Makoto Kobayashi, Hiroyuki Akiho
Electricity production from coal fuel with minimizing efficiency penalty for the carbon dioxide abatement will bring us sustainable and compatible energy utilization. One of the promising options is oxy-fuel type Integrated Gasification Combined Cycle (oxy-fuel IGCC) power generation that is estimated to achieve thermal efficiency of 44% at lower heating value (LHV) base and provide compressed carbon dioxide (CO2) with concentration of 93 vol%. The proper operation of the plant is established by introducing dry syngas cleaning processes to control halide and sulfur compounds satisfying tolerate contaminants level of gas turbine...
June 6, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28595513/modeling-and-comparative-assessment-of-bubbling-fluidized-bed-gasification-system-for-syngas-production-a-gateway-for-a-cleaner-future-in-pakistan
#6
Areeb Shehzad, Mohammed J K Bashir, Mika Horttanainen, Mika Manttari, Jouni Havukainen, Ghulam Abbas
The present study explores the potential of MSW gasification for exergy analysis and has been recently given a premier attention in a region like Pakistan where the urbanization is rapidly growing and resources are few. The plant capacity was set at 50 MW based on reference data available and the total exergetic efficiency was recorded to be 31.5 MW. The largest irreversibility distribution appears in the gasifier followed by methanation unit and CO2 capture. The effect of process temperature, equivalence ratio and MSW moisture content was explored for inspecting the variations in syngas composition, lower heating value, carbon conversion efficiency and cold gas efficiency...
June 19, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28579178/waste-biorefineries-enabling-circular-economies-in-developing-countries
#7
REVIEW
A S Nizami, M Rehan, M Waqas, M Naqvi, O K M Ouda, K Shahzad, R Miandad, M Z Khan, M Syamsiro, I M I Ismail, Deepak Pant
This paper aims to examine the potential of waste biorefineries in developing countries as a solution to current waste disposal problems and as facilities to produce fuels, power, heat, and value-added products. The waste in developing countries represents a significant source of biomass, recycled materials, chemicals, energy, and revenue if wisely managed and used as a potential feedstock in various biorefinery technologies such as fermentation, anaerobic digestion (AD), pyrolysis, incineration, and gasification...
May 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28579143/energy-from-poultry-waste-an-aspen-plus-based-approach-to-the-thermo-chemical-processes
#8
Gianluca Cavalaglio, Valentina Coccia, Franco Cotana, Mattia Gelosia, Andrea Nicolini, Alessandro Petrozzi
A particular approach to the task of energy conversion of a residual waste material was properly experienced during the implementation of the national funded Enerpoll project. This project is a case study developed in the estate of a poultry farm that is located in a rural area of central Italy (Umbria Region); such a farm was chosen for the research project since it is almost representative of many similar small-sized breeding realties of the Italian regional context. The purpose of the case study was the disposal of a waste material (i...
May 31, 2017: Waste Management
https://www.readbyqxmd.com/read/28578856/environmental-performances-of-different-configurations-of-a-material-recovery-facility-in-a-life-cycle-perspective
#9
Filomena Ardolino, Chiara Berto, Umberto Arena
The study evaluated the environmental performances of an integrated material recovery facility (MRF) able to treat 32kt/y of unsorted mixed waste, made of residuals from household source separation and separate collection. The facility includes a mechanical sorting platform for the production of a solid recovered fuel (SRF) utilized in an external waste-to-energy plant, bio-cells for tunnel composting of organic fraction, and a sanitary landfill for the safe disposal of ultimate waste. All the MRF sub-units have been analysed in depth in order to acquire reliable data for a life cycle assessment study, focused on the environmental performances of different configurations of the facility...
June 1, 2017: Waste Management
https://www.readbyqxmd.com/read/28575792/optimization-of-hydrogen-and-syngas-production-from-pks-gasification-by-using-coal-bottom-ash
#10
Muhammad Shahbaz, Suzana Yusup, Abrar Inayat, David Onoja Patrick, Angga Pratama, Muhamamd Ammar
Catalytic steam gasification of palm kernel shell is investigated to optimize operating parameters for hydrogen and syngas production using TGA-MS setup. RSM is used for experimental design and evaluating the effect of temperature, particle size, CaO/biomass ratio, and coal bottom ash wt% on hydrogen and syngas. Hydrogen production appears highly sensitive to all factors, especially temperature and coal bottom ash wt%. In case of syngas, the order of parametric influence is: CaO/biomass>coal bottom ash wt%>temperature>particle size...
May 24, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28551431/research-on-pyrolysis-behavior-of-camellia-sinensis-branches-via-the-discrete-distributed-activation-energy-model
#11
Bingliang Zhou, Jianbin Zhou, Qisheng Zhang
This study aims at investigating the pyrolysis behavior of Camellia sinensis branches by the Discrete Distributed Activation Energy Model (DAEM) and thermogravimetric experiments. Then the Discrete DAEM method is used to describe pyrolysis process of Camellia sinensis branches dominated by 12 characterized reactions. The decomposition mechanism of Camellia sinensis branches and interaction with components are observed. And the reaction at 350.77°C is a significant boundary of the first and second reaction range...
May 18, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28546906/recent-progress-in-energy-driven-water-splitting
#12
REVIEW
Si Yin Tee, Khin Yin Win, Wee Siang Teo, Leng-Duei Koh, Shuhua Liu, Choon Peng Teng, Ming-Yong Han
Hydrogen is readily obtained from renewable and non-renewable resources via water splitting by using thermal, electrical, photonic and biochemical energy. The major hydrogen production is generated from thermal energy through steam reforming/gasification of fossil fuel. As the commonly used non-renewable resources will be depleted in the long run, there is great demand to utilize renewable energy resources for hydrogen production. Most of the renewable resources may be used to produce electricity for driving water splitting while challenges remain to improve cost-effectiveness...
May 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28544988/co-gasification-of-bituminous-coal-and-hydrochar-derived-from-municipal-solid-waste-reactivity-and-synergy
#13
Juntao Wei, Qinghua Guo, Qing He, Lu Ding, Kunio Yoshikawa, Guangsuo Yu
In this work, the influences of gasification temperature and blended ratio on co-gasification reactivity and synergy of Shenfu bituminous coal (SF) and municipal solid waste-derived hydrochar (HTC) were investigated using TGA. Additionally, active alkaline and alkaline earth metal (AAEM) transformation during co-gasification was quantitatively analyzed by inductively coupled plasma optical emission spectrometer for correlating synergy on co-gasification reactivity. The results showed that higher char gasification reactivity existed at higher HTC char proportion and gasification temperature, and the main synergy behaviour on co-gasification reactivity was performed as synergistic effect...
September 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28501263/economic-and-environmental-review-of-waste-to-energy-systems-for-municipal-solid-waste-management-in-medium-and-small-municipalities
#14
J M Fernández-González, A L Grindlay, F Serrano-Bernardo, M I Rodríguez-Rojas, M Zamorano
The application of Directive 2008/98/CE on Municipal Solid Waste (MSW) implies the need to introduce technologies to generate energy from waste. Incineration, the most widely used method, is difficult to implement in low populated areas because it requires a large amount of waste to be viable (100,000 tons per year). This paper analyses the economic and environmental costs of different MSW-to-Energy technologies (WtE) in an area comprising of 13 municipalities in southern Spain. We analyse anaerobic digestion (Biomethanization), the production of solid recovered fuel (SRF) and gasification, and compare these approaches to the present Biological Mechanical Treatment (BMT) with elimination of the reject in landfill, and incineration with energy recovery...
May 10, 2017: Waste Management
https://www.readbyqxmd.com/read/28493186/analysis-of-ecotoxic-influence-of-waste-from-the-biomass-gasification-process
#15
Małgorzata Hawrot-Paw, Adam Koniuszy, Małgorzata Mikiciuk, Monika Izwikow, Tomasz Stawicki, Paweł Sędłak
The purpose of this research was evaluation of the effect of soil contamination with waste coming from biomass gasification on chosen indicators of its biological activity, growth and development of spring barley, and change of physiological parameters of the plant. Chromatographic content and basic rheological parameters of the substances under research were also analyzed. Liquid wastes, tar, and mixture of tar and engine oil were introduced to the soil in the amount of 100 mg kg(-1) DM soil. Based on the conducted research, it was ascertained that the changes in the number and activity of soil microorganisms were determined by the type of waste and its dose...
June 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28479087/low-temperature-circulating-fluidized-bed-gasification-and-co-gasification-of-municipal-sewage-sludge-part-2-evaluation-of-ash-materials-as-phosphorus-fertilizer
#16
Tobias Pape Thomsen, Henrik Hauggaard-Nielsen, Benny Gøbel, Peder Stoholm, Jesper Ahrenfeldt, Ulrik B Henriksen, Dorette Sophie Müller-Stöver
The study is part 2 of 2 in an investigation of gasification and co-gasification of municipal sewage sludge in low temperature gasifiers. In this work, solid residuals from thermal gasification and co-gasification of municipal sewage sludge were investigated for their potential use as fertilizer. Ashes from five different low temperature circulating fluidized bed (LT-CFB) gasification campaigns including two mono-sludge campaigns, two sludge/straw mixed fuels campaigns and a straw reference campaign were compared...
May 4, 2017: Waste Management
https://www.readbyqxmd.com/read/28462684/integrated-gasification-combined-cycle-using-egyptian-maghara-coal-rice-straw-feedstock
#17
A Hegazy, A O Ghallab, F H Ashour
Rice straw is an agricultural waste that causes an annoying problem in Egypt if it is not well exploited. This study focuses on using this waste in power generation by co-gasification of Egyptian Maghara coal and rice straw blends using entrained flow gasifier technology. Aspen Plus was used to conduct a parametric study for investigation of the effect of changing the inputs to the gasifier on the produced gas composition. Three different input parameters, influencing the performance of the gasifier, including the percentage of coal to rice straw in the blend, the fraction of added water to the blend, and the mass percentage of oxygen with respect to the mass of the blend fed to the gasifier were analysed...
April 1, 2017: Waste Management & Research
https://www.readbyqxmd.com/read/28456221/a-novel-multi-jet-burner-for-hot-flue-gases-of-wide-range-of-temperatures-and-compositions-for-optical-diagnostics-of-solid-fuels-gasification-combustion
#18
Wubin Weng, Jesper Borggren, Bo Li, Marcus Aldén, Zhongshan Li
A novel multi-jet burner was built to provide one-dimensional laminar flat flames with a wide range of variable parameters for multipurpose quantitative optical measurements. The burner is characterized by two independent plenum chambers, one supporting a matrix of 181 laminar jet flames and the other supporting a co-flow from a perforated plate with small holes evenly distributed among the jets. A uniform rectangular burned gas region of 70 mm × 40 mm can be generated, with a wide range of temperatures and equivalence ratios by controlling independently the gas supplies to the two plenum chambers...
April 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28455210/low-temperature-circulating-fluidized-bed-gasification-and-co-gasification-of-municipal-sewage-sludge-part-1-process-performance-and-gas-product-characterization
#19
Tobias Pape Thomsen, Zsuzsa Sárossy, Benny Gøbel, Peder Stoholm, Jesper Ahrenfeldt, Flemming Jappe Frandsen, Ulrik Birk Henriksen
Results from five experimental campaigns with Low Temperature Circulating Fluidized Bed (LT-CFB) gasification of straw and/or municipal sewage sludge (MSS) from three different Danish municipal waste water treatment plants in pilot and demonstration scale are analyzed and compared. The gasification process is characterized with respect to process stability, process performance and gas product characteristics. All experimental campaigns were conducted at maximum temperatures below 750°C, with air equivalence ratios around 0...
April 25, 2017: Waste Management
https://www.readbyqxmd.com/read/28449949/energetic-and-environmental-assessment-of-thermochemical-and-biochemical-ways-for-producing-energy-from-agricultural-solid-residues-coffee-cut-stems-case
#20
Carlos A García, Álvaro Peña, Ramiro Betancourt, Carlos A Cardona
Forest residues are an important source of biomass. Among these, Coffee Cut-Stems (CCS) are an abundant wood waste in Colombia obtained from coffee crops renovation. However, only low quantities of these residues are used directly in combustion processes for heating and cooking in coffee farms where their energy efficiency is very low. In the present work, an energy and environmental assessment of two bioenergy production processes (ethanol fermentation and gasification) using CCS as raw material was performed...
April 24, 2017: Journal of Environmental Management
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