Journal ArticleDOI
Enhancement of hydrogen production in steam gasification of sewage sludge by reusing the calcium in lime-conditioned sludge
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TLDR
In this article, the authors investigated the enhanced efficiency of syngas, especially regarding H2 yield, in the catalytic steam gasification of dry dewatered sludge with physically mixed CaO and dry sludge dewatering with CaO as conditioner.About:
This article is published in International Journal of Hydrogen Energy.The article was published on 2013-02-06. It has received 50 citations till now. The article focuses on the topics: Sludge & Syngas.read more
Citations
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Thermochemical conversion of sewage sludge: A critical review
TL;DR: In this article, the characteristics of sewage sludge are discussed in terms of composition and the current options for its treatment with the associated environmental impacts, and a critical comparison is made of the drying techniques, co-feedstocks and catalytic processes, reaction kinetics, reactor technologies, operating conditions to be optimized, removal of impurities, fuel properties, their constraints and required improvements.
Journal ArticleDOI
Effective Nitrogen Removal and Recovery from Dewatered Sewage Sludge Using a Novel Integrated System of Accelerated Hydrothermal Deamination and Air Stripping
TL;DR: In order to reduce considerable emissions of N-containing pollutants from combustion of sewage sludge derived solid fuel, an integrated system of hydrothermal deamination and air stripping was developed to effectively remove and recover nitrogen from dewatered sewage slurry (DSS).
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Catalytic role of conditioner CaO in nitrogen transformation during sewage sludge pyrolysis
TL;DR: In this paper, the catalytic role of conditioner CaO in nitrogen transformation during sewage sludge pyrolysis in a drop-tube/fixed-bed furnace at 873 K, 1073 K and 1273 K was investigated.
Journal ArticleDOI
A comprehensive review on hydrogen production from coal gasification: Challenges and Opportunities
TL;DR: In this article, a comprehensive review of hydrogen production from coal gasification is presented, including state of the art and comparative evaluation, environmental and economic dimensions, energetic and exergetic aspects, challenges, opportunities and future directions.
Journal ArticleDOI
Catalytic reforming of volatiles and nitrogen compounds from sewage sludge pyrolysis to clean hydrogen and synthetic gas over a nickel catalyst
TL;DR: In this paper, low-temperature catalytic reforming of volatiles and nitrogen compounds from sewage sludge (SS) pyrolysis was performed in a two-stage fixed-bed reactor over Ni/Al2O3 under inert and steam-reforming conditions.
References
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Journal ArticleDOI
Utilization of sewage sludge in EU application of old and new methods—A review
D. Fytili,Anastasia Zabaniotou +1 more
TL;DR: In this article, the authors review past and future trends in sludge handling, focusing mainly at thermal processes (e.g. pyrolysis, wet oxidation, gasification) and the utilization of sewage sludge in cement manufacture as a co-fuel.
Journal ArticleDOI
Formation of the structure of chars during devolatilization of pulverized coal and its thermoproperties: A review
TL;DR: In this article, the authors provide an overview of coal devolatilization studies, especially the experimental studies and modelling efforts on the formation of char structure of bituminous coals in the open literature.
Journal ArticleDOI
Role of extracellular polymeric substances in bioflocculation of activated sludge microorganisms under glucose-controlled conditions
Appala Raju Badireddy,Shankararaman Chellam,Paul L. Gassman,Mark H. Engelhard,Alan S. Lea,Kevin M. Rosso +5 more
TL;DR: EPS secreted by suspended cultures of microorganisms from an activated sludge plant in the presence of glucose were characterized in detail using colorimetry, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) Spectroscopy.
Journal ArticleDOI
Biomass Gasification with Steam in Fluidized Bed: Effectiveness of CaO, MgO, and CaO−MgO for Hot Raw Gas Cleaning
TL;DR: In this article, the upgrading of the raw hot gas from a bubbling fluidized bed biomass gasifier is studied using cheap calcined minerals or rocks downstream from the gasifier. And the effects on tar conversion, tar amount in the exit gas, product distribution, and gas composition are presented.
Journal ArticleDOI
Gasification of sewage sludge using a throated downdraft gasifier and uncertainty analysis
TL;DR: In this paper, it is suggested that the downdraft gasifier should be operated at 3.69-3.43% of the feed rate, at 2.28-2.84% of specific gasification rate and around 93.64-94.15%±1.92% of turndown ratio in order to avoid clinker formation at the throat of the gasifier because of high ash content of sludge.
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