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https://www.readbyqxmd.com/read/28228328/techno-economic-assessment-of-catalytic-gasification-of-biomass-powders-for-methanol-production
#1
Lara Carvalho, Erik Furusjö, Kawnish Kirtania, Elisabeth Wetterlund, Joakim Lundgren, Marie Anheden, Jens Wolf
This study evaluated the techno-economic performance and potential benefits of methanol production through catalytic gasification of forest residues and lignin. The results showed that while catalytic gasification enables increased cold gas efficiencies and methanol yields compared to non-catalytic gasification, the additional pre-treatment energy and loss of electricity production result in small or no system efficiency improvements. The resulting required methanol selling prices (90-130€/MWh) are comparable with production costs for other biofuels...
February 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28214442/hydrothermal-liquefaction-of-sewage-sludge-under-isothermal-and-fast-conditions
#2
Lili Qian, Shuzhong Wang, Phillip E Savage
We investigated the effects of water loading, sludge moisture content, recovery solvent, and additives on the product yields and compositions from isothermal (673K, 60min) and fast (773K, 1min) hydrothermal liquefaction (HTL) of sewage sludge. The water loading (which affects pressure within the reactor) plays a small role in product yields. The sludge moisture content had a larger effect with the highest biocrude yields (26.8wt% from isothermal HTL and 27.5wt% from fast HTL) being produced from sludge that was 85wt% moisture...
February 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28182436/kinetics-chemistry-and-morphology-of-syngas-photoinitiated-chemical-vapor-deposition
#3
Donya Farhanian, Gregory De Crescenzo, Jason R Tavares
Syngas is the product of gasification processes and is used for the production of petrochemicals. Little attention has been paid to its use in the production of oligomeric thin films under ambient conditions. Herein, the nature of the photoinitiated chemical vapor deposition of films made from syngas using high-wavelength ultraviolet light is discussed, including an exploration of the oligomeric films' structure, synthesis mechanism, and growth kinetics. Specifically, X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry analyses provide insight into the chemical structure, illustrating the effect of photogenerated radicals in the formation of aliphatic, anhydride, and cyclic structures...
February 17, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28138339/well-to-wake-analysis-of-ethanol-to-jet-and-sugar-to-jet-pathways
#4
Jeongwoo Han, Ling Tao, Michael Wang
BACKGROUND: To reduce the environmental impacts of the aviation sector as air traffic grows steadily, the aviation industry has paid increasing attention to bio-based alternative jet fuels (AJFs), which may provide lower life-cycle petroleum consumption and greenhouse gas (GHG) emissions than petroleum jet fuel. This study presents well-to-wake (WTWa) results for four emerging AJFs: ethanol-to-jet (ETJ) from corn and corn stover, and sugar-to-jet (STJ) from corn stover via both biological and catalytic conversion...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28108022/evaluation-of-a-method-for-removing-cesium-and-reducing-the-volume-of-leaf-litter-from-broad-leaved-trees-contaminated-by-the-fukushima-daiichi-nuclear-accident-during-the-great-east-japan-earthquake
#5
Shigeki Harada, Mitsunori Yanagisawa
The town of Marumori in southern Miyagi Prefecture borders on Fukushima Prefecture, and following the accident at the Fukushima Daiichi nuclear power plant, there were concerns about cesium deposition in forested areas. One of the authors of this paper has continually surveyed leaf litter from the forested areas. As leaf litter may be a source of cesium contamination from the forest to downstream areas, we considered a simplified version of wet oxidation, a method previously presented by one of the authors of this study, as a technology to reduce leaf litter weight and cesium concentration, separating radioactive nuclides from non-radioactive ones, in leaf litter...
April 2017: Chemosphere
https://www.readbyqxmd.com/read/28104002/-ten-day-periodical-of-traditional-chinese-medicine-and-its-concept-of-confluence-of-chinese-and-western-medicine
#6
S B Zhang, Z W Wang
The Ten-day Periodical of Traditional Chinese Medicine, a TCM Journal founded by the Xiamen Professional School of Traditional Chinese Medicine in July 1934, had published a lot of essays written by many TCM physicians that interpret the concept of traditional Chinese medicine by western medicine, offering the academic way of probing confluence of Chinese and Western Medicine in Xiamen. The aim of the Journal includes "developing TCM academy" and the "confluence of TCM with western medicine" , the exploration of TCM and the penetration of Chinese and western medicine, and getting rid of blind faith on "science" to set up the belief of TCM and to prove the ideas of visceral theory and its gasification by the anatomical knowledge of western medicine...
September 28, 2016: Zhonghua Yi Shi za Zhi, Chinese Journal of Medical History
https://www.readbyqxmd.com/read/28076440/application-of-a-cloud-model-set-pair-analysis-in-hazard-assessment-for-biomass-gasification-stations
#7
Fang Yan, Kaili Xu
Because a biomass gasification station includes various hazard factors, hazard assessment is needed and significant. In this article, the cloud model (CM) is employed to improve set pair analysis (SPA), and a novel hazard assessment method for a biomass gasification station is proposed based on the cloud model-set pair analysis (CM-SPA). In this method, cloud weight is proposed to be the weight of index. In contrast to the index weight of other methods, cloud weight is shown by cloud descriptors; hence, the randomness and fuzziness of cloud weight will make it effective to reflect the linguistic variables of experts...
2017: PloS One
https://www.readbyqxmd.com/read/28068592/effect-of-torrefaction-on-the-properties-of-rice-straw-high-temperature-pyrolysis-char-pore-structure-aromaticity-and-gasification-activity
#8
Handing Chen, Xueli Chen, Yueqiang Qin, Juntao Wei, Haifeng Liu
The influence of torrefaction on the physicochemical characteristics of char during raw and water washed rice straw pyrolysis at 800-1200°C is investigated. Pore structure, aromaticity and gasification activity of pyrolysis chars are compared between raw and torrefied samples. For raw straw, BET specific surface area decreases with the increased torrefaction temperature at the same pyrolysis temperature and it approximately increases linearly with weight loss during pyrolysis. The different pore structure evolutions relate to the different volatile matters and pore structures between raw and torrefied straw...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28066511/biomass-waste-to-energy-valorisation-technologies-a-review-case-for-banana-processing-in-uganda
#9
REVIEW
Robert Gumisiriza, Joseph Funa Hawumba, Mackay Okure, Oliver Hensel
BACKGROUND: Uganda's banana industry is heavily impeded by the lack of cheap, reliable and sustainable energy mainly needed for processing of banana fruit into pulp and subsequent drying into chips before milling into banana flour that has several uses in the bakery industry, among others. Uganda has one of the lowest electricity access levels, estimated at only 2-3% in rural areas where most of the banana growing is located. In addition, most banana farmers have limited financial capacity to access modern solar energy technologies that can generate sufficient energy for industrial processing...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28061398/energy-performance-of-an-integrated-bio-and-thermal-hybrid-system-for-lignocellulosic-biomass-waste-treatment
#10
Xiang Kan, Zhiyi Yao, Jingxin Zhang, Yen Wah Tong, Wenming Yang, Yanjun Dai, Chi-Hwa Wang
Lignocellulosic biomass waste, a heterogeneous complex of biodegradables and non-biodegradables, accounts for large proportion of municipal solid waste. Due to limitation of single-stage treatment, a two-stage hybrid AD-gasification system was proposed in this work, in which AD acted as pre-treatment to convert biodegradables into biogas followed by gasification converting solid residue into syngas. Energy performance of single and two-stage systems treating 3 typical lignocellulosic wastes was studied using both experimental and numerical methods...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28042990/physicochemical-evolution-during-rice-straw-and-coal-co-pyrolysis-and-its-effect-on-co-gasification-reactivity
#11
Juntao Wei, Yan Gong, Qinghua Guo, Lu Ding, Fuchen Wang, Guangsuo Yu
Physicochemical evolution (i.e. pore structure variation, carbon structure change and active AAEM transformation) during rice straw (RS) and Shenfu bituminous coal (SF) co-pyrolysis was quantitatively determined in this work. Moreover, the corresponding char gasification was conducted using a thermogravimetric analyzer (TGA) and relative reactivity was proposed to quantify the co-pyrolysis impact on co-gasification reactivity. The results showed that the development of pore structure in co-pyrolyzed chars was first inhibited and then enhanced with the decrease of SF proportion...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27928060/gasification-an-alternative-solution-for-energy-recovery-and-utilization-of-vegetable-market-waste
#12
Sunil L Narnaware, Nsl Srivastava, Samir Vahora
Vegetables waste is generally utilized through a bioconversion process or disposed of at municipal landfills, dumping sites or dumped on open land, emitting a foul odor and causing health hazards. The presents study deals with an alternative way to utilize solid vegetable waste through a thermochemical route such as briquetting and gasification for its energy recovery and subsequent power generation. Briquettes of 50 mm diameter were produced from four different types of vegetable waste. The bulk density of briquettes produced was increased 10 to 15 times higher than the density of the dried vegetable waste in loose form...
December 6, 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27912988/sequential-electrodialytic-recovery-of-phosphorus-from-low-temperature-gasification-ashes-of-chemically-precipitated-sewage-sludge
#13
Raimon Parés Viader, Pernille Erland Jensen, Lisbeth M Ottosen, Jesper Ahrenfeldt, Henrik Hauggaard-Nielsen
Phosphorus recycling from secondary materials like sewage sludge ashes offers an alternative to mining of phosphates from primary resources and a mean to counteract the current phosphorous rock depletion concern. A separation of P from the bulk ash is normally required, due to its low plant availability and the presence of heavy metals. Previously, more than 80% of P was recovered from incineration sewage sludge ashes using a two-compartment electrodialytic cell. In contrast, the recovery was below 30% for ashes from low-temperature gasification using the same setup...
November 29, 2016: Waste Management
https://www.readbyqxmd.com/read/27908585/innovative-pretreatment-strategies-for-biogas-production
#14
REVIEW
Regina J Patinvoh, Osagie A Osadolor, Konstantinos Chandolias, Ilona Sárvári Horváth, Mohammad J Taherzadeh
Biogas or biomethane is traditionally produced via anaerobic digestion, or recently by thermochemical or a combination of thermochemical and biological processes via syngas (CO and H2) fermentation. However, many of the feedstocks have recalcitrant structure and are difficult to digest (e.g., lignocelluloses or keratins), or they have toxic compounds (such as fruit flavors or high ammonia content), or not digestible at all (e.g., plastics). To overcome these challenges, innovative strategies for enhanced and economically favorable biogas production were proposed in this review...
January 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27898796/sorption-of-pharmaceuticals-heavy-metals-and-herbicides-to-biochar-in-the-presence-of-biosolids
#15
Daniel A Bair, Fungai N D Mukome, Inna E Popova, Temitope A Ogunyoku, Allie Jefferson, Daoyuan Wang, Sarah C Hafner, Thomas M Young, Sanjai J Parikh
Agricultural practices are increasingly incorporating recycled waste materials, such as biosolids, to provide plant nutrients and enhance soil functions. Although biosolids provide benefits to soil, municipal wastewater treatment plants receive pharmaceuticals and heavy metals that can accumulate in biosolids, and land application of biosolids can transfer these contaminants to the soil. Environmental exposure of these contaminants may adversely affect wildlife, disrupt microbial communities, detrimentally affect human health through long-term exposure, and cause the proliferation of antibiotic-resistant bacteria...
November 2016: Journal of Environmental Quality
https://www.readbyqxmd.com/read/27883955/prospects-for-energy-recovery-during-hydrothermal-and-biological-processing-of-waste-biomass
#16
Léda Gerber Van Doren, Roy Posmanik, Felipe A Bicalho, Jefferson W Tester, Deborah L Sills
Thermochemical and biological processes represent promising technologies for converting wet biomasses, such as animal manure, organic waste, or algae, to energy. To convert biomass to energy and bio-chemicals in an economical manner, internal energy recovery should be maximized to reduce the use of external heat and power. In this study, two conversion pathways that couple hydrothermal liquefaction with anaerobic digestion or catalytic hydrothermal gasification were compared. Each of these platforms is followed by two alternative processes for gas utilization: 1) combined heat and power; and 2) combustion in a boiler...
February 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27815006/the-effects-of-straw-or-straw-derived-gasification-biochar-applications-on-soil-quality-and-crop-productivity-a-farm-case-study
#17
Veronika Hansen, Dorette Müller-Stöver, Valentina Imparato, Paul Henning Krogh, Lars Stoumann Jensen, Anders Dolmer, Henrik Hauggaard-Nielsen
Thermal gasification of straw is a highly efficient technology that produces bioenergy and gasification biochar that can be used as a soil amendment, thereby returning non-renewable nutrients and stable carbon, and securing soil quality and crop productivity. A Danish on-farm field study investigated the impact of traditional straw incorporation vs. straw removal for thermal gasification bioenergy production and the application of straw gasification biochar (GB) on soil quality and crop production. Two rates of GB were applied over three successive years in which the field was cropped with winter wheat (Triticum aestivum L...
January 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/27796970/thermochemical-conversion-of-waste-tyres-a-review
#18
Madona Labaki, Mejdi Jeguirim
A review of the energy recovery from waste tyres is presented and focuses on the three thermochemical processes used to valorise waste tyres: pyrolysis, gasification, and combustion/incineration. After recalling the chemical composition of tyres, the thermogravimetric behaviours of tyres or their components under different atmospheres are described. Different kinetic studies on the thermochemical processes are treated. Then, the three processes were investigated, with a particular attention given to the gasification, due to the information unavailability on this process...
October 27, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27773548/a-financial-feasibility-model-of-gasification-and-anaerobic-digestion-waste-to-energy-wte-plants-in-saudi-arabia
#19
Laith A Hadidi, Mohamed Mahmoud Omer
Municipal Solid Waste (MSW) generation in Saudi Arabia is increasingly growing at a fast rate, as it hurtles towards ever increasing urban development coupled with rapid developments and expanding population. Saudi Arabia's energy demands are also rising at a faster rate. Therefore, the importance of an integrated waste management system in Saudi Arabia is increasingly rising and introducing Waste to Energy (WTE) facilities is becoming an absolute necessity. This paper analyzes the current situation of MSW management in Saudi Arabia and proposes a financial model to assess the viability of WTE investments in Saudi Arabia in order to address its waste management challenges and meet its forecasted energy demands...
January 2017: Waste Management
https://www.readbyqxmd.com/read/27771525/role-of-steel-slags-on-biomass-carbon-dioxide-gasification-integrated-with-recovery-of-high-temperature-heat
#20
Yongqi Sun, Qianyi Liu, Hao Wang, Zuotai Zhang, Xidong Wang
Disposal of biomass in the agriculture and steel slags in the steel industry provides a significant solution toward sustainability in China. Herein these two sectors were creatively combined as a novel method, i.e., biomass/CO2 gasification using waste heat from hot slags where the influence of chemical compositions of steel slags, characterized as iron oxide content and basicity, on gasification thermodynamics, was systemically reported for the first time. Both the target gases of CO, H2 and CH4 and the polluted gases of NH3, NO and NO2 were considered...
January 2017: Bioresource Technology
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