Comparative life cycle assessment and economic analysis of methanol/hydrogen production processes for fuel cell vehicles

2021 ◽  
pp. 126959
Author(s):  
Wei Wu ◽  
Ching-Ting Pai ◽  
Karthickeyan Viswanathan ◽  
Jo-Shu Chang
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Fuel Cell ◽  
Hydrogen Production ◽  
Economic Analysis ◽  
Fuel Cell Vehicles ◽  
Production Processes ◽  
Comparative Life Cycle Assessment

scholarly journals Life Cycle Assessment of Fuel Cell Vehicles Considering the Detailed Vehicle Components: Comparison and Scenario Analysis in China Based on Different Hydrogen Production Schemes

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 3031 ◽  
Author(s):  
Yisong Chen ◽  
Xu Hu ◽  
Jiahui Liu
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Fuel Cell ◽  
Hydrogen Production ◽  
Scenario Analysis ◽  
Power Structure ◽  
Life Cycles ◽  
Raw Material ◽  
Fuel Cell Vehicles ◽  
Vehicle Components

Numerous studies concerning the life cycle assessment of fuel cell vehicles (FCVs) have been conducted. However, little attention has been paid to the life cycle assessment of an FCV from the perspective of the detailed vehicle components. This work conducts the life cycle assessment of Toyota Mirai with all major components considered in a Chinese context. Both the vehicle cycle and the fuel cycle are included. Both comprehensive resources and energy consumption and comprehensive environmental emissions of the life cycles are investigated. Potential environmental impacts are further explored based on CML 2001 method. Then different hydrogen production schemes are compared to obtain the most favorable solution. To explore the potential of the electrolysis, the scenario analysis of the power structure is conducted. The results show that the most mineral resources are consumed in the raw material acquisition stage, the most fossil energy is consumed in the use stage and global warming potential (GWP) value is fairly high in all life cycle stages of Toyota Mirai using electrolyzed hydrogen. For hydrogen production schemes, the scenario analysis indicates that simply by optimizing the power structure, the environmental impact of the electrolysis remains higher than other schemes. When using the electricity from hydropower or wind power, the best choice will be the electrolysis.

Life cycle assessment and techno-economic analysis of biomass-to-hydrogen production with methane tri-reforming

Energy ◽  
2020 ◽  
Vol 199 ◽  
pp. 117488 ◽  
Author(s):  
Guoxuan Li ◽  
Shuai Wang ◽  
Jiangang Zhao ◽  
Huaqing Qi ◽  
Zhaoyuan Ma ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Hydrogen Production ◽  
Economic Analysis

scholarly journals A Comparative Life Cycle Assessment of Different Production Processes for Waterborne Polyurethane Dispersions

2021 ◽  
Author(s):  
Valentin Klug ◽  
Josef-Peter Schöggl ◽  
Doris Dallinger ◽  
Clemens Stueckler ◽  
Andreas Steiner ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Impact Category ◽  
Waterborne Polyurethane ◽  
Flow Process ◽  
Production Processes ◽  
Cradle To Gate ◽  
Polyurethane Dispersions ◽  
The Impact ◽  
Comparative Life Cycle Assessment

This study provides a comparative life cycle assessment (LCA) of four different polyurethane dispersion production processes from cradle-to-gate. The environmental performances of the NMP process, the acetone process, the melt process, and a conceptualized continuous flow process were evaluated and compared following the CML 2001 methodology. The LCA revealed that the conceptualized flow process exhibits the lowest environmental impact in all investigated impact categories. Depending on the impact category, the melt process or the acetone process rank second. The NMP process was observed to have the highest impact in all categories. Consequently, the flow process has the lowest carbon footprint (1.13 kg CO2-eq), according to the global warming potential (100 years), followed by the melt (1.45 kg CO2-eq), the acetone (1.95 kg CO2-eq) and the NMP process (3.11 kg CO2-eq).

Environmental impact comparison of wheat straw fast pyrolysis systems with different hydrogen production processes based on life cycle assessment

2021 ◽  
pp. 0734242X2110450
Author(s):  
Xiang Zheng ◽  
Zhaoping Zhong ◽  
Bo Zhang ◽  
Haoran Du ◽  
Wei Wang ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Hydrogen Production ◽  
Environmental Impact ◽  
Wheat Straw ◽  
Aqueous Phase ◽  
Fast Pyrolysis ◽  
Maximal Effect ◽  
Production Processes ◽  
Bio Oil

This study aimed to evaluate the environmental impact of 1000 kg h−1 wheat straw to produce biofuel via fast pyrolysis with three different hydrogen production processes by the life cycle assessment (LCA) based on Chinese Life Cycle Database (CLCD). The primary energy depletion (PED), global warming potential (GWP), abiotic depletion potential (ADP) and respiratory inorganics (RI) impact categories of 1 MJ biofuel produced were employed for comparison. In case 1, the hydrogen was derived from natural gas steam reforming, and all the bio-oil was hydrotreated to produce the biofuel. In case 2, a part of the aqueous phase was reformed to produce hydrogen, whereas the remaining bio-oil was hydrotreated to produce biofuel. In case 3, all the aqueous phase of bio-oil was reformed to produce hydrogen, a part of hydrogen generated by reforming was used to oil phase hydrotreated and the excess hydrogen was considered as a co-product. Our results show that the PED, GWP, ADP and RI of case 3 are 0.1355 MJ, −17.96 g CO2eq., 0.0338 g antimonyeq and 0.0461 g PM2.5eq.. Compared with conventional diesel, the PED, GWP, ADP and RI of case 3 were reduced by 89.81, 117.44, 1.74 and 85.03%, respectively. The results of sub-process contribution analysis and sensitivity analysis suggested that the electricity consumption for the bio-oil production has the maximal effect on the total PED, GWP and RI of case 3, whereas the amount of fertilizers in the biomass production sub-process has the maximal effect on the total ADP.

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