Syngas production by catalytic in-situ steam co-gasification of wet sewage sludge and pine sawdust

Hu, Mian; Gao, Lan; Chen, Zhihua; Ma, Chunfeng; Zhou, Yan; Chen, Jian; Ma, Shihua; Laghari, Muhammad Younis; Xiao, Bo; Zhang, Beiping; Guo, Dabin

doi:10.1016/j.enconman.2015.12.064

Cited by 117 publications

(50 citation statements)

References 29 publications

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“…Recently, over 3080 municipal wastewater treatment plants are being operated in China, and they are producing about 20 million tons of sewage sludge every year (Hu et al, 2016). However, sewage sludge is being considered as a raw renewable energy source benefiting in zero-CO 2 -emission (Urych and Smolinski, 2016).…”

Section: Introductionmentioning

confidence: 99%

Investigation on the fast co-pyrolysis of sewage sludge with biomass and the combustion reactivity of residual char

Deng

Tan

Wang

et al. 2017

Bioresource Technology

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Section: Introductionmentioning

confidence: 99%

Investigation on the fast co-pyrolysis of sewage sludge with biomass and the combustion reactivity of residual char

Deng

Tan

Wang

et al. 2017

Bioresource Technology

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“…This process will corrode a large amount of the organic matter in the oil sludge, and etch more pore-like structures on the surface. Moreover, after being adsorbed on the surface of the alkali activated dry sludge, NO reacts with O 2 to form NO 2 [16]. The generated NO 2 is easily adsorbed by a basic functional group.…”

Section: Introductionmentioning

confidence: 99%

Application of Plasma Treatment in Preparation of Soybean Oil Factory Sludge Catalyst and Its Application in Selective Catalytic Oxidation (SCO) Denitration

Zhang

Yang

et al. 2018

Materials

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At present, the most commonly used denitration process is the selective catalytic reduction (SCR) method. However, in the SCR method, the service life of the catalyst is short, and the industrial operation cost is high. The selective catalytic oxidation absorption (SCO) method can be used in a low temperature environment, which greatly reduces energy consumption and cost. The C/N ratio of the sludge produced in the wastewater treatment process of the soybean oil plant used in this paper is 9.64, while the C/N ratio of the sludge produced by an urban sewage treatment plant is 10–20. This study shows that the smaller the C/N ratio, the better the denitration efficiency of the catalyst. Therefore, dried oil sludge is used as a catalyst carrier. The influence of different activation times, and LiOH concentrations, on catalyst activity were investigated in this paper. The denitration performance of catalysts prepared by different activation sequences was compared. The catalyst was characterized by Fourier Transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM). The experimental results showed that: (1) When the concentration of the LiOH solution used for activation is 15%, and the activation time is four hours, the denitration effect of the catalyst is the best; (2) the catalyst prepared by activation before plasma roasting has the best catalytic activity.

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“…Research efforts to improve the steam gasification processes include a co‐gasification process which uses more than two types of feedstock and a hydrothermal treatment for the feeding materials . Using catalysts in steam gasification has been the most active research area.…”

Section: Introductionmentioning

confidence: 99%

“…Using catalysts in steam gasification has been the most active research area. The main objective of utilizing catalysts is to reduce tar formation and increase hydrogen concentration under relatively lower temperature conditions . He et al studied catalytic steam gasification of MSW using calcined dolomite.…”

Section: Introductionmentioning

confidence: 99%

“…% because of the lower temperature condition, which is only comparable to those of air‐steam gasification. Hu et al studied the steam gasification using NiO/modified dolomite catalyst for the mixture of wet sewage sludge and pine sawdust at 800 °C. The result showed that the catalysts increased the gas yield around 36% compared to the non‐catalytic condition, and hydrogen concentration was raised from 36.1 vol.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of useful energy from solid waste materials by steam gasification

Lee

Dong

Chung

2016

Int. J. Energy Res.

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SUMMARYA steam gasification processes is an energy conversion pathway through which organic materials are converted to useful energy. In spite of the high energy content in organic waste materials, they have been mostly disposed of in landfills, which causes harmful environmental issues such as methane emissions and ground water pollution and contaminations. In this sense, organic solid waste materials are regarded as alternative resources for conversion to useful energy in the steam gasification process. In this study, three types of waste materials -municipal solid waste (MSW), used tires and sewage sludge -were used to generate syngas through the gasification process in a 1000°C steam atmosphere. The syngas generation rates and its chemical compositions were measured and evaluated over time to determine the characteristics and dynamics of the gasification process. Also, carbon conversion, and mass and energy balances are presented which demonstrates the feasibility of steam gasification as a waste conversion pathway. The results show that the syngas contains high concentrations of H 2 , around 41-55% by volume. The syngas generation rate was found to depend on the carbon content in the feedstock regardless of the types of input materials. Comparing to the hydrogen production from water splitting that requires extremely high temperatures at around 1500°C, hydrogen production by steam gasification of organic materials can be regarded as equally effective but requires lower system temperatures.

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Syngas production by catalytic in-situ steam co-gasification of wet sewage sludge and pine sawdust

Cited by 117 publications

References 29 publications

Investigation on the fast co-pyrolysis of sewage sludge with biomass and the combustion reactivity of residual char

Investigation on the fast co-pyrolysis of sewage sludge with biomass and the combustion reactivity of residual char

Application of Plasma Treatment in Preparation of Soybean Oil Factory Sludge Catalyst and Its Application in Selective Catalytic Oxidation (SCO) Denitration

Production of useful energy from solid waste materials by steam gasification

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