Hydrothermal decomposition and oxidation of the organic component of municipal and industrial waste products

Jomaa, Sami; Shanableh, Abdallah; Khalil, Wael Al-Shiekh; Trebilco, Brendan

doi:10.1016/s1093-0191(02)00042-4

Cited by 61 publications

(26 citation statements)

References 2 publications

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“…In contrast, water is a convenient solvent for biomass deconstruction because the properties of water, such as dielectric constant, density, and ionic product, can be adjusted with the temperature and pressure. There are numerous studies [11,151,25,51,60,64,68,70,71,97,98,104,124,149,152,151] on the biomass conversion in hot temperature water (HTW) and supercritical water (SCW). HTW is broadly defined to be subcritical liquid water (150°C \ T \ 374°C), and SCW is water at temperatures and pressures above the critical point (T [ 374°C and P [ 221 bar) [3,120].…”

Section: Introductionmentioning

confidence: 99%

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Lin

Liu

et al. 2014

Green Chemistry and Sustainable Technology

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The transition from today's fossil-based economy to a sustainable economy based on renewable biomass is driven by the concern of climate change and anticipation of dwindling fossil resources. Although biofuels are the central theme of the transition, biomass resources cannot completely replace petroleum. It is projected that biofuels can only supply up to 30 % of today's transportation fuel market even if all available domestic biomass resources are used for the production of liquid fuels. Therefore, transformation of biomass into high-value-added chemicals is advantageous to secure optimal use of the abundant, but limited, biomass resources from the economical and ecological perspective. Industry is increasingly considering bio-based chemical production as an attractive area for investment. The potential for chemical and polymer production from biomass is substantial. The US Department of Energy recently issued a report which listed 12 chemical building blocks considered as potential building blocks for the future. Organic acids (e.g., succinic, lactic, levulinic acid, etc.) are among the widely spread ''platform-molecules,'' which may be further converted into possibly derivable high-value-added chemicals. The transition from a fossil chemical industry to a renewable chemical industry will likewise depend on our ability to focus research and development efforts on the most promising alternatives. In this chapter, we review the emerging technologies on catalytic conversion of biomass to value-added organic acids in aqueous media.

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Section: Introductionmentioning

confidence: 99%

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Lin

Liu

et al. 2014

Green Chemistry and Sustainable Technology

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“…However, its application is restricted to organic materials that can't tolerate high temperatures. Moist-heat treatment refers to splitting (breaking) up of the organic particles into smaller organic fragments in water through a variety of mechanisms, including hydrolysis, oxidation, and gasification (Jomma et al, 2003), which also acts on the large organic molecules reducing them into smaller fragments, some of which dissolve in water. Furthermore, proteins in food waste are easier to be destroyed during dry-heat treatment process compared with moist-heat treatment as Maillard reactions (Henle, 2001).…”

Section: Introductionmentioning

confidence: 99%

A study of the impact of moist-heat and dry-heat treatment processes on hazardous trace elements migration in food waste

Chen

Jin

Qiu

et al. 2014

Journal of the Air & Waste Management Association

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Using laboratory experiments, the authors investigated the impact of dry-heat and moist-heat treatment processes on hazardous trace elements (As, Hg, Cd, Cr, and Pb) in food waste and explored their distribution patterns for three waste components: oil, aqueous, and solid components. The results indicated that an insignificant reduction of hazardous trace elements in heat-treated waste-0.61-14.29% after moist-heat treatment and 4.53-12.25% after dry-heat treatment-and a significant reduction in hazardous trace elements (except for Hg without external addition) after centrifugal dehydration (P < 0.5). Moreover, after heat treatment, over 90% of the hazardous trace elements in the waste were detected in the aqueous and solid components, whereas only a trace amount of hazardous trace elements was detected in the oil component (<0.01%). In addition, results indicated that heat treatment process did not significantly reduce the concentration of hazardous trace elements in food waste, but the separation process for solid and aqueous components, such as centrifugal dehydration, could reduce the risk considerably. Finally, combined with the separation technology for solid and liquid components, dry-heat treatment is superior to moist-heat treatment on the removal of external water-soluble ionic hazardous trace elements.Implications: An insignificant reduction of hazardous trace elements in heat-treated waste showed that heat treatment does not reduce trace elements contamination in food waste considerably, whereas the separation process for solid and aqueous components, such as centrifugal dehydration, could reduce the risk significantly. Moreover, combined with the separation technology for solid and liquid components, dry-heat treatment is superior to moist-heat treatment for the removal of external water-soluble ionic hazardous trace elements, by exploring distribution patterns of trace elements in three waste components: oil, aqueous, and solid components.

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“…Thus, hydrothermal can be used in various processes i.e. crystallization (Matthews, 1976), crystal growth (Laudise & Nielsen, 1961), synthesis (Sōmiya & Roy, 2000), decomposition (Jomaa et al, 2003), extraction (Goguel, 1985), etc. Lots of researches in this field have been dedicated to "Hydrothermal synthesis" which usually involves aqueous chemical reactions at temperatures higher than 100ºC in a closed system.…”

Section: Hydrothermal Synthesismentioning

confidence: 99%

Application of Artificial Neural Networks in Optical Properties of Nanosemiconductors

Tabriz¹,

Salehpour²,

Kandjani³

2011

Artificial Neural Networks - Application

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Hydrothermal decomposition and oxidation of the organic component of municipal and industrial waste products

Cited by 61 publications

References 2 publications

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

Catalytic Conversion of Lignocellulosic Biomass to Value-Added Organic Acids in Aqueous Media

A study of the impact of moist-heat and dry-heat treatment processes on hazardous trace elements migration in food waste

Application of Artificial Neural Networks in Optical Properties of Nanosemiconductors

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