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Kong S.F.,Shenzhen Key Laboratory of Circular economics | Ma F.S.,Shenzhen Key Laboratory of Circular economics | Zhang X.X.,Shenzhen Key Laboratory of Circular economics | Li H.,Shenzhen Key Laboratory of Circular economics | And 2 more authors.
Advanced Materials Research

Biomass gasification is one of the most promising technologies to exploit energy from renewable biomass. In this paper, brief introduction of the mechanism of biomass gasification technology and the application status of biomass gasification was described in detail. The research progress of biomass gasification technology in China is reviewed. Finally, the features of these technologies are analyzed and the problems that the biomass gasification technology needs to solve and the research direction of this technology are pointed out. © (2014) Trans Tech Publicutions, Switzerland. Source

Kong S.F.,Shenzhen Key Laboratory of Circular economics | Hui L.,Shenzhen Key Laboratory of Circular economics | Ma F.S.,Shenzhen Key Laboratory of Circular economics | Zeng H.,Peking University
Advanced Materials Research

Thermo-chemical conversion to prepare biomass liquid fuel is one of the most promising biomass utilization technologies for biomass energy. Direct liquefaction and indirect liquefaction, two main thermo-chemical conversion technologies for liquid fuel from biomass were introduced in detail. Moreover, the latest research status of five kinds of liquid-fuel products from biomass by thermo-chemical conversion technology, such as methanol, ethanol, dimethyl ether, biodiesel and biomass pyrolytic oil were especially discussed. In addition, the problems existing in the thermo-chemical conversion technology and products are discussed and the developing trend and some proposals on thermo-chemical utilization of biomass energy in future are presented. © (2014) Trans Tech Publications, Switzerland. Source

Wang J.-J.,Peking University | Wang J.-J.,Shenzhen Key Laboratory of Circular economics | Zhao H.-W.,Peking University | Zhao H.-W.,Shenzhen Key Laboratory of Circular economics | And 8 more authors.
Environmental Earth Sciences

Within the management hierarchy of municipal solid waste (MSW), incineration with energy recovery is a desired and viable option often used in densely populated and economically developed cities. The gaseous and particulate mercury (Hg) emitted from MSW incinerators may accumulate in the soil entering via dry and wet deposition. To investigate the soil Hg level and estimate the effects of the local meteorological and topographical characteristics (e. g., winds and terrain) on the soil Hg distribution, two layers of soil samples around an MSW incinerator in Shenzhen, China were collected and analyzed. Results showed that the Hg levels ranged from 0. 012 to 0. 136 mg kg-1 and from 0. 013 to 0. 100 mg kg-1 in the surface and subsurface soils, respectively. Long-term exposure of the soil to atmospheric Hg from the MSW incinerator dominates the spatial pattern of soil Hg. The wind frequency directly affected Hg distribution but not decisively. Interestingly, the variations of Hg level with downwind distance away from the stack were highly consistent with the terrain profile (r2: 0. 412-0. 748). The effects of winds and terrain on soil Hg distribution and their mechanisms are discussed and general Hg dispersion patterns for transport on terrain are further proposed. © 2011 Springer-Verlag. Source

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