Journal ArticleDOI
Energy recovery from secondary pulp/paper-mill sludge and sewage sludge with supercritical water treatment
TLDR
In comparison to sewage sludges, SPP exhibited a greater capability for the production of HO and gases owing to its higher contents of volatiles and alkali metals, indicating a prospective utilization potential for SPP as a source of bio-energy.About:
This article is published in Bioresource Technology.The article was published on 2010-04-01. It has received 150 citations till now. The article focuses on the topics: Sludge & Waste disposal.read more
Citations
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Journal ArticleDOI
Supercritical water gasification of biomass for hydrogen production Review
TL;DR: In this paper, the authors summarized the recent developments in the field of supercritical water gasification (SCWG) of biomass and classified the main factors influencing the chemical reaction pathways of SCWG.
Journal ArticleDOI
Total concentrations and chemical speciation of heavy metals in liquefaction residues of sewage sludge.
Xingzhong Yuan,Huajun Huang,Guangming Zeng,Hui Li,Jingyu Wang,Chun-Fei Zhou,Huina Zhu,Xiaokai Pei,Zhifeng Liu,Zhantao Liu +9 more
TL;DR: The comparisons of sequential extraction results between SS and LR showed that after liquefaction, the mobile and easily available heavy metals fractions were mainly transformed into the relatively stable heavy metal fractions (oxidizable and residual fractions).
Journal ArticleDOI
Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen production: A review
Abstract: Sewage sludge is bio-solid with high moisture content generated from wastewater treatment plants. Due to the avoidance of energy-intensive dewatering, hydrothermal conversion of sewage sludge becomes a promising technology to simultaneously achieve energy recovery and solid waste management. In order to obtain an entire understanding of applicability of hydrothermal gasification for hydrogen rich gas production from sewage sludge, this review article discussed hydrothermal conversion and gasification processes in terms of fundamental principles, operating conditions, partial oxidative gasification, and detrimental effects of intermediates. Furthermore, since organic compounds in sewage sludge are mainly composed of carbohydrates, proteins, lipids, and lignin, this article comprehensively reviewed hydrogen production from these biomass model compounds and their hydrolysis products under sub- and supercritical water. Additionally, introduction of alkali salts and heterogeneous catalysts to enhance hydrogen yield under mild temperatures and pressures in hydrothermal gasification process was also discussed. Based on bench and pilot scale studies, supercritical water gasification of sewage sludge for hydrogen production is feasible in terms of technical and economic evaluation. Given issues concerning corrosion, plugging and high operating cost, a combined supercritical water gasification and catalytic hydrothermal gasification concept is proposed as a practical strategy to directly harness hydrogen from sewage sludge in future applications.
Journal ArticleDOI
Treatment of municipal sewage sludge in supercritical water: A review
TL;DR: Research regarding the removal of organics with or without hydrothermal flames and the changes in heavy metal speciation and risk are reviewed and typical systems for handling MSS are summarized and research needs and challenges are proposed.
Journal ArticleDOI
Quantitative evaluation of heavy metals' pollution hazards in liquefaction residues of sewage sludge.
Huajun Huang,Xingzhong Yuan,Guangming Zeng,Huina Zhu,Hui Li,Zhifeng Liu,Hong-wei Jiang,Lijian Leng,Wenkai Bi +8 more
TL;DR: The leaching rates (R1) of heavy metals in LR were much lower than those in SS, revealing that the mobility/leachability ofheavy metals was well suppressed after liquefaction, and overall risks caused by heavy metals were lowered.
References
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Book
Wastewater Engineering Treatment Disposal Reuse
TL;DR: Wastewater Engineering: An Overview of Wastewater Engineering, Methods and Implementation Considerations as mentioned in this paper is a good starting point for a discussion of the issues of wastewater engineering. But, it is not a complete survey of the entire literature.
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
Biomass gasification in near- and super-critical water: Status and prospects
Yukihiko Matsumura,Tomoaki Minowa,Biljana Potic,Sascha R.A. Kersten,Wolter Prins,Willibrordus Petrus Maria van Swaaij,Bert van de Beld,Douglas C. Elliott,Gary G. Neuenschwander,Andrea Kruse,Michael Jerry Antal +10 more
TL;DR: The current status of biomass gasification in near and supercritical water (SCWG) is reviewed in this article, where two approaches for SCWG are compared: low-temperature catalytic gasification, which employs reaction temperature ranging from 350 to 600 °C, and gasifies the feedstock with the aid of metal catalysts.
Journal ArticleDOI
Biomass Conversion in Water at 330−410 °C and 30−50 MPa. Identification of Key Compounds for Indicating Different Chemical Reaction Pathways
Andrea Kruse,A. Gawlik +1 more
TL;DR: In this article, the degradation of biomass was studied in the ranges of 330−410 °C and 30−50 MPa and at 15 min of reaction time, and the chemistry of biomass degradation, key compounds which are interme...