keyword
MENU ▼
Read by QxMD icon Read
search

Gasification

keyword
https://www.readbyqxmd.com/read/27912988/sequential-electrodialytic-recovery-of-phosphorus-from-low-temperature-gasification-ashes-of-chemically-precipitated-sewage-sludge
#1
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
#2
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...
November 22, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27898796/sorption-of-pharmaceuticals-heavy-metals-and-herbicides-to-biochar-in-the-presence-of-biosolids
#3
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
#4
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...
November 9, 2016: 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
#5
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...
November 1, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27796970/thermochemical-conversion-of-waste-tyres-a-review
#6
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
#7
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...
October 20, 2016: Waste Management
https://www.readbyqxmd.com/read/27771525/role-of-steel-slags-on-biomass-carbon-dioxide-gasification-integrated-with-recovery-of-high-temperature-heat
#8
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...
October 14, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27771200/assessment-of-by-products-of-bioenergy-systems-anaerobic-digestion-and-gasification-as-potential-crop-nutrient
#9
Sampriti Kataki, Samarendra Hazarika, D C Baruah
Alternative fertilizer resources have drawn attention in recent times in order to cope up with ever increasing demand for fertilizer. By-products of bioenergy system are considered favourable as organic fertilizer due to their ability to recycle plant nutrients. Present study evaluates fertilizer suitability of by-products of two bioenergy systems viz. 3 types of anaerobic digestion by-products (digestate) from local surplus biomass such as cowdung, Ipomoea carnea:cowdung (60:40) and ricestraw:green gram stover:cowdung (30:30:40) and one gasification by-product (biochar) from rice husk...
October 19, 2016: Waste Management
https://www.readbyqxmd.com/read/27742149/environmental-assessment-of-energy-generation-from-agricultural-and-farm-waste-through-anaerobic-digestion
#10
Figen Sisman Nayal, Aydin Mammadov, Nilgun Ciliz
While Turkey is one of the world's largest producers and exporters of agricultural goods, it is also, at the same time a net importer of energy carriers. This dichotomy offers a strong incentive to generate energy from agricultural and farming waste; something which could provide energy security for rural areas. Combined with the enhanced energy security for farming areas, the production of energy in this manner could conceivably contribute to the overall national effort to reduce the Turkey's carbon footprint...
October 11, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27721097/hydrothermal-gasification-of-cladophora-glomerata-macroalgae-over-its-hydrochar-as-a-catalyst-for-hydrogen-rich-gas-production
#11
Farid Safari, Omid Norouzi, Ahmad Tavasoli
A tubular batch micro-reactor system was used for hydrothermal gasification (HTG) of Cladophora glomerata (C. glomerata) as green macroalgae found in the southern coast of the Caspian Sea, Iran. Non-catalytic tests were performed to determine the optimum condition for hydrogen production. Hydrochar, as a solid residue of non-catalytic HTG was characterized by BET, FESEM, and ICP-OES methods to determine its physiochemical properties. Surface area and pore volume of C. glomerata increased drastically after HTG...
September 26, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27720225/corrigendum-to-state-of-the-art-of-biological-processes-for-coal-gasification-wastewater-treatment-biotechnol-adv-34-5-2016-1064-1072
#12
Qian Zhao, Yu Liu
No abstract text is available yet for this article.
October 5, 2016: Biotechnology Advances
https://www.readbyqxmd.com/read/27695754/comparison-of-the-physical-and-chemical-properties-of-laboratory-and-field-aged-biochars
#13
Santanu Bakshi, Deborah M Aller, David A Laird, Rajesh Chintala
The long-term impact of biochar on soil properties and agronomic outcomes is influenced by changes in the physical and chemical properties of biochars that occur with time (aging) in soil environments. Fresh biochars, however, are often used in studies because aged biochars are generally unavailable. Therefore, a need exists to develop a method for rapid aging of biochars in the laboratory. The objectives of this study were to compare the physicochemical properties of fresh, laboratory-aged (LA), and field-aged (FA) (≥3 yr) biochars and to assess the appropriateness of a laboratory aging procedure that combines acidification, oxidation, and incubations as a mimic to field aging in neutral or acidic soil environments...
September 2016: Journal of Environmental Quality
https://www.readbyqxmd.com/read/27693728/simulation-of-biomass-steam-gasification-in-fluidized-bed-reactors-model-setup-comparisons-and-preliminary-predictions
#14
Linbo Yan, C Jim Lim, Guangxi Yue, Boshu He, John R Grace
A user-defined solver integrating the solid-gas surface reactions and the multi-phase particle-in-cell (MP-PIC) approach is built based on the OpenFOAM software. The solver is tested against experiments. Then, biomass-steam gasification in a dual fluidized bed (DFB) gasifier is preliminarily predicted. It is found that the predictions agree well with the experimental results. The bed material circulation loop in the DFB can form automatically and the bed height is about 1m. The voidage gradually increases along the height of the bed zone in the bubbling fluidized bed (BFB) of the DFB...
December 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27684199/the-penetrated-delivery-of-drug-and-energy-to-tumors-by-lipo-graphene-nanosponges-for-photolytic-therapy
#15
Yu-Lin Su, Kuan-Ting Chen, Yu-Chen Sheu, Shuo-Yuan Sung, Ru-Siou Hsu, Chi-Shiun Chiang, Shang-Hsiu Hu
Delivery of drug and energy within responsive carriers that effectively target and accumulate in cancer cells promises to mitigate side effects and to enhance the uniquely therapeutic efficacy demanded for personalized medicine. To achieve this goal, however, these carriers, which are usually piled up at the periphery of tumors near the blood vessel, must simultaneously overcome the challenges associated with low tumor penetration and the transport of sufficient cargos to deep tumors to eradicate whole cancer cells...
October 3, 2016: ACS Nano
https://www.readbyqxmd.com/read/27681256/disposal-options-for-polluted-plants-grown-on-heavy-metal-contaminated-brownfield-lands-a-review
#16
Helga Kovacs, Katalin Szemmelveisz
Reducing or preventing damage caused by environmental pollution is a significant goal nowadays. Phytoextraction, as remediation technique is widely used, but during the process, the heavy metal content of the biomass grown on these sites special treatment and disposal techniques are required, for example liquid extraction, direct disposal, composting, and combustion. These processes are discussed in this review in economical and environmental aspects. The following main properties are analyzed: form and harmful element content of remains, utilization of the main and byproducts, affect to the environment during the treatment and disposal...
January 2017: Chemosphere
https://www.readbyqxmd.com/read/27643734/effect-of-pure-oxygen-fine-bubbles-on-the-organic-matter-removal-and-bacterial-community-evolution-treating-coal-gasification-wastewater-by-membrane-bioreactor
#17
Haifeng Zhuang, Xiaoting Hong, Hongjun Han, Shengdao Shan
A lab-scale study was investigated to evaluate the effect of pure oxygen fine bubbles on membrane bioreactor (O2-MBR) performance of treating coal gasification wastewater. Compared with conventional MBR using aeration source of air (CMBR), the removal efficiencies of COD and total phenols increased by 28% and 36%, and the organic compositions of treated effluent represented significant difference that was mainly attributed to the controlled the foam expansion and enhanced the enzymatic activities in O2-MBR...
December 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27635107/potential-process-hurdles-in-the-use-of-macroalgae-as-feedstock-for-biofuel-production-in-the-british-isles
#18
John J Milledge, Patricia J Harvey
This review examines the potential technical and energy balance hurdles in the production of seaweed biofuel, and in particular for the MacroBioCrude processing pipeline for the sustainable manufacture of liquid hydrocarbon fuels from seaweed in the UK. The production of biofuel from seaweed is economically, energetically and technically challenging at scale. Any successful process appears to require both a method of preserving the seaweed for continuous feedstock availability and a method exploiting the entire biomass...
August 2016: Journal of Chemical Technology and Biotechnology
https://www.readbyqxmd.com/read/27619963/adding-value-to-gasification-and-co-pyrolysis-chars-as-removal-agents-of-cr-3
#19
D Godinho, D Dias, M Bernardo, N Lapa, I Fonseca, H Lopes, F Pinto
The present work aims to assess the efficiency of chars, obtained from the gasification and co-pyrolysis of rice wastes, as adsorbents of Cr(3+) from aqueous solution. GC and PC chars, produced in the gasification and co-pyrolysis, respectively, of rice husk and polyethylene were studied. Cr(3+) removal assays were optimised for the initial pH value, adsorbent mass, contact time and Cr(3+) initial concentration. GC showed a better performance than PC with about 100% Cr(3+) removal, due to the pH increase that caused Cr precipitation...
September 6, 2016: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27616911/gasification-reactor-engineering-approach-to-understanding-the-formation-of-biochar-properties
#20
Andrew N Rollinson
The correlation between thermochemical provenance and biochar functionality is poorly understood. To this end, operational reactor temperatures (spanning the reduction zone), pressure and product gas composition measurements were obtained from a downdraft gasifier and compared against elemental composition, surface morphology and polyaromatic hydrocarbon content (PAH) of the char produced. Pine feedstock moisture with values of 7% and 17% was the experimental variable. Moderately high steady-state temperatures were observed inside the reactor, with a ca 50°C difference in how the gasifier operated between the two feedstock types...
August 2016: Proceedings. Mathematical, Physical, and Engineering Sciences
keyword
keyword
100043
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"