Y.G. Zhou’s scientific contributions

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Publications (4)


Thermal cracking products and bio-oil production from microalgae Desmodesmus sp.
  • Article

July 2017

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46 Reads

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17 Citations

International Journal of Agricultural and Biological Engineering

G. Li

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S.N. Xiang

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F. Ji

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[...]

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Z.G. Huang

Qualitative and quantitative analyses of thermal cracking products from Desmodesmus sp. were performed based on pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) at different temperature regimes (350°C-750°C). After further analysis of a series of total ions chromatogram (TIC) and summarized, thermal cracking products of Desmodesmus sp. at different temperature regimes can be obtained, which mainly comprised of aliphatic hydrocarbons, nitrogen compounds, aromatic hydrocarbons, fatty acids, ketones, alcohols, aldehydes and furan compounds. Compared to bio-oil production at 650°C (32.07%), Desmodesmus sp. pyrolyzed at 750°C could produce the highest bio-oil content of 42.25%. However, higher temperature could lead to the formation of contaminants (nitrogen compounds and PAHs) more easily. Therefore, considering the higher content of bio-oil conversion and less pollutants generation, the optimum temperature for Desmodesmus sp. thermal cracking conversion was about 650°C. © 2017, Chinese Society of Agricultural Engineering. All rights reserved.


Table 1 Detailed information of MRU VARIO PLUS
Table 6 EF for various biomass pellets
Figure 7 PM size distribution of the tested stove burning the three kinds of tested biomass pellets
Effects of biomass pellet composition on the thermal and emissions performances of a TLUD cooking stove
  • Article
  • Full-text available

July 2017

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557 Reads

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14 Citations

International Journal of Agricultural and Biological Engineering

Indoor air pollution is ranked the 5th in the Global Burden of Disease index of the World Health Organization (WHO). Almost half of the world’s population depends on biomass fuels to meet their basic energy requirements for cooking, lighting and space heating. When fuel is badly combusted in poorly designed stoves, the fuel-stove combination results in high level of noxious emissions entering the home, accumulating to dangerous levels. In this study, a Chinese unvented top lit updraft (TLUD) biomass stove was operated with three different biomass pellets formed from corn stover, cotton stalk and peanut shells. The performance tests were conducted according to the latest standard from the Chinese Ministry of Agriculture. The calorific value, moisture level, volatile matter and elemental composition are reported for each. The thermal efficiencies of the stove were 15.3%, 10.1% and 14.4%, respectively. The cooking powers were 2.68 kW, 1.61 kW and 1.57 kW. The exhaust was collected using a hood and tunnel. The CO, NO and NOX were drawn after passing 1.5 m along the tunnel and the Particulate Matter (PM) was sampled after 1.6 m. The Emission Factors (EF) for CO, NO, NOX and PM10 are reported on both a mass per unit energy delivered to the pot (g/MJNET) and a mass per mass of fuel basis (g/kg). The range for CO was 4.56-7.61 g/MJNET (11.25-21.25 g/kg); NO was 0.75-1.23 g/MJNET (2.09-3.04 g/kg); NOx was 1.13-1.90 g/MJNET (3.14-4.86 g/kg); PM10 was 0.59-0.85 g/MJNET (1.67-2.09 g/kg). The range in these values was more significantly influenced by the fuel moisture content and the percentage of volatile matter than by variations in the elemental composition. © 2017, Chinese Society of Agricultural Engineering. All rights reserved.

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Analytical study on pyrolyzed products of Desmodesmus sp. Cultivated in BG11

January 2017

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18 Reads

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5 Citations

International Journal of Agricultural and Biological Engineering

Pyrolysis-Gas Chromatography-Mass Spectrometry (Py-GC/MS) was adopted to determine the changes in component of BG11-cultivated Desmodesmus sp. (BG11/8-10) pyrolyzed products at different temperatures (300°C-800°C). The results of analysis on a series of total ions chromatogram (TIC) showed that pyrolyzed products of BG11/8-10 at different temperature mainly included aliphatic hydrocarbons, nitrogen compounds, aromatic hydrocarbons, fatty acids, ketones, alcohols, aldehydes and furan compounds. Compared to the bio-oil (42.36%) generated by pyrolysis at 700°C, the relative content of bio-oil generated at 800°C was the highest up to 56.96%. However, higher temperature could easily cause the generation of large quantities of such pollutants as nitrogen compounds and polycyclic aromatic hydrocarbons (PAHs). Therefore, based on lower pollutant discharge and higher bio-oil yield, the optimal pyrolysis temperature of BG11/8-10 was around 700°C. © 2017, Chinese Society of Agricultural Engineering. All rights reserved.


Life cycle assessment of pyrolysis process of Desmodesmus sp.

October 2015

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31 Reads

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6 Citations

This paper described a comprehensive assessment of the pyrolysis process of 1 kg Desmodesmus sp. cultivated in BG11 medium at the optimum temperature by using life cycle assessment method. This assessment took 1 kg of Desmodesmus sp. as a functional unit, and chose energy efficiency analysis and potential environmental impact as assessment indices. The results showed that the energy conversion efficiency index of the pyrolysis process was above 1, which meant the pyrolysis process was beneficial. The primary impact of the pyrolysis process on the environment was eutrophication; which followed by photochemical ozone synthesis and acidification; and global warming impact was the last. The overall environmental impact during the whole life cycle was 1 347.63 mPET2000. © 2015, Chinese Society of Agricultural Engineering. All rights reserved.

Citations (4)


... Nevertheless, the adiabatic flame temperature decreases if CA/GA ratio increases; this behavior is caused by the excess of combustion air, which leads to decrease the flame temperature because a high amount of flue gases is heated by the same mass of the producer gas. Therefore, based on the maximum adiabatic flame temperature of the producer gas (~1000 °C), it is highlighted that the trends of the NO x emissions from the TLUD cookstove analyzed here could be attributed to the N-biomass activation [36,91,92]. ...

Reference:

Effect of the air flows ratio on energy behavior and NO x emissions from a top-lit updraft biomass cookstove
Effects of biomass pellet composition on the thermal and emissions performances of a TLUD cooking stove

International Journal of Agricultural and Biological Engineering

... When the temperature raises from 450 °C to 650 °C, the relative content of the aliphatic hydrocarbon compounds gradually increased and reached a maximum of 13.58% at 650 °C. In this case, the temperature range 500-600 °C that major compound long-chain alkanes 66.98% and long-chain alkenes 11.53% [40]. ...

Thermal cracking products and bio-oil production from microalgae Desmodesmus sp.
  • Citing Article
  • July 2017

International Journal of Agricultural and Biological Engineering

... So as to provide a theoretical reference for the industrialized production of tiger nut dry products. At present, gas chromatography is the most widely used method for the analysis of fatty acid composition [19,20] . It has the characteristics of short analysis time, good separation effect, low detection limit, and high sensitivity [21,22] . ...

Analytical study on pyrolyzed products of Desmodesmus sp. Cultivated in BG11
  • Citing Article
  • January 2017

International Journal of Agricultural and Biological Engineering

... Figure 1 depicts the boundary of the system, and the energy consumption during system operation is regarded as the input. The depreciation of pyrolysis equipment, the energy consumption of adding additional nutrients to the modified medium, and the impact of microalgae growth on the environment were excluded [30]. It is worth noting that the pollutants in the process were not treated as extras. ...

Life cycle assessment of pyrolysis process of Desmodesmus sp.
  • Citing Article
  • October 2015