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	1. Modified First-order Kinetics and Two-Stage Reaction (FKTSR) Land Fill Gas Generation Rate Model
	Chen Jiajun,Wang Hao,ZHANG Na
	Environmental Science and Techology 08 January 2009
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	Abstract:The purpose of this work is to establish a new domestic landfill gas (LFG) generation rate model accounting for the impact of leachate recirculation. FKTSR model, namely a LFG generation rate model of the First-order Kinetics and Two-Stage Reaction, in which nutrient balance for biochemical reaction in two main stages is taken into account. In this study, FKTSR model was modified by introduction of outflow function and organic acid conversion coefficient in order to represent the in-situ condition of nutrient loss through leachate. Laboratory experiments were carried out to simulate the impact of leachate recirculation and to verify the modified FKTSR model. The model calibration was then conducted using the observed data of experiments. Fitting results suggest that the new model gives satisfactory fits to experimental data, and the main parameters, LFG production potential (L0), reaction rate constant in first stage (K1), reaction rate constant in second stage (K2) of the modified FKTSR model are 64.746L, 0.202d-1, 0.338d-1, respectively, comparing to the old ones of 42.069L, 0.231d-1, 0.231d-1. The fitting result proves that the new model provides a better explanation for mechanisms involved for landfill gas generation.
	TO cite this article:Chen Jiajun,Wang Hao,ZHANG Na. Modified First-order Kinetics and Two-Stage Reaction (FKTSR) Land Fill Gas Generation Rate Model[OL].[ 8 January 2009] http://en.paper.edu.cn/en_releasepaper/content/27474


	2. Research on Composition and Recycle Value of Aged Refuse at Shanghai Refuse Landfill
	Yang Yujiang,Zhao Youcai
	Environmental Science and Techology 29 January 2007
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	Abstract:Refuse at Shanghai Refuse Landfill was excavated from the compartments closed from 1991 to 2004; and the composition of aged refuse was studied. The results show that plastic and rubber fractions were well preserved from photodegradation and oxygen aging in closed compartments, and can be recycled after simple pretreatment; the content of organic fraction, mainly including plastic fraction, increased logarithmically with placement time and will exceed inorganic fraction after 2010. Thus thermal treatment, such as incineration and hydrolysis, may be an effective way for the cycling of aged refuse.
	TO cite this article:Yang Yujiang,Zhao Youcai. Research on Composition and Recycle Value of Aged Refuse at Shanghai Refuse Landfill[OL].[29 January 2007] http://en.paper.edu.cn/en_releasepaper/content/10933


	3. Microwave thermal pretreatment of sewage sludge
	Wang wei,Qiao wei
	Environmental Science and Techology 28 February 2006
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	Abstract:Water could absorb microwave and increase temperature rapidly within short time. Municipal wastewater treatment plant sewage sludge was used to be heated by microwave digestion reactor. Sludge total solid content (TS) was 2%, 4% and 5%. Microwave heating temperature was 150℃, 170℃ and 190℃, reaction time was 5 minutes. Results show that temperature rising trend from ambient to three specified temperature was similar. Colloid structure was destroyed to release soluble organic components. Dewaterability and settling performance were improved. TS and suspended solid content (SS) reduced. High temperature resulted high SS dissolving ratio. For TS 2% sludge, at 190℃ 40.0% of SS dissolved.
	TO cite this article:Wang wei,Qiao wei. Microwave thermal pretreatment of sewage sludge[OL].[28 February 2006] http://en.paper.edu.cn/en_releasepaper/content/5441

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