Recovery of solid fuel from municipal solid waste by hydrothermal treatment using subcritical water

Hwang, Inseok; Aoyama, Hiroya; Matsuto, Toshihiko; Nakagishi, Tatsuhiro; Matsuo, Takayuki

doi:10.1016/j.wasman.2011.10.006

Cited by 118 publications

(66 citation statements)

References 17 publications

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“…HTC comprises a series of hydrolysis, condensation, decarboxylation and dehydration reactions. It utilizes subcritical water to heat feedstock at temperature typically ranging from 180 to 350 o C [4], even though the effect of carbonization can be achieved under temperature below 300 o C [5]. Not only process temperature, the type of feedstock is also important parameter to be considered in terms of sustainablity.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal carbonization of biomass waste under low temperature condition

et al. 2018

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Abstract. In this paper, the use of banana peel for energy purposes was investigated. Banana peel is a lignocellulosic waste since it is the most widely produced and consumed fruit in Indonesia. Among the others, hydrothermal carbonization (HTC) was chosen as alternative themochemical process, suitable for high moisture biomass. Through a 1 L stirred reactor, hydrothermal treatments were performed under low temperature condition (190, 210 and 230 o C), residence times (30 and 60 min), and biomass to water ratio (1:3, 1:5, and 1:10). Three of product were collected from the process with primary material balance. Solid phase (hydrochar) was evaluated in terms of calorific value, proximate and ultimate analysis. The results suggested that the hydrothermal carbonization of banana peel gave high heating value (HHV) of 20.09 MJ/kg for its char after dried naturally.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal carbonization of biomass waste under low temperature condition

et al. 2018

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“…The significant benefits associated with HTC have led to a number of new research projects on waste stream carbonization [5,18,19]. HTC has shown enormous potential as a green waste conversion technique, ultimately converting waste materials to value-added products, while promoting carbon recovery in the solid phase [5,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Recovery of Value-Added Products from Hydrothermal Carbonization of Sewage Sludge

Saetea

Tippayawong

2013

ISRN Chemical Engineering

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This paper is about the conversion of wet waste stream into valuable products via thermal processing. Hydrothermal carbonization of sewage sludge was carried out at 200 ∘ C and 2.1 MPa in a closed reactor for 1-6 h. Main products were in solid and liquid phases. The resulting hydrochar was shown to have H/C and O/C ratios moving towards natural lignite, improved energetic content, and adsorption property in terms of iodine number. The aqueous solution was found to contain high concentration of plant food nutrients, especially nitrogen and potassium. They may be desirable for subsequent fuel and chemical production as well as applications in agriculture. The study shows that valuable products can be generated successfully from sewage sludge using hydrothermal carbonization.

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“…The carbon content of the produced hydrochar ranges from 42-73% (Table 3). Based on many literature (Hwang et al, 2012;Lu et al, 2013;Lu et al, 2014), carbon contents of hydrochar from the carbonization process were vary depend on other compounds. So, it is very hard to compare between carbon-contents measured in this study with reported in other literature.…”

Section: Proximate and Ultimate Analysis Of Hydrocharmentioning

confidence: 99%

“…Subcritical water, typically ranging from 180 to 350C, is utilized in order to heat feedstock at temperature (Lu et al, 2012), even though carbonization itself can be achieved under temperature below 300C (Hwang et al, 2012). HTC process generally comprises a series of hydrolysis, condensation, decarboxylation and dehydration reactions according to several researchers (Titirici et al, 2007;Sevilla and Fuertes, 2009;Funke and Ziegler, 2010).…”

Section: Introductionmentioning

confidence: 99%