کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1744809 1522161 2014 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Life cycle assessment of hydrogen production via electrolysis – a review
ترجمه فارسی عنوان
بررسی چرخه زندگی تولید هیدروژن از طریق الکترولیز؟ بازنگری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی


• Twenty-one studies on LCA of hydrogen production technologies were reviewed.
• Most studies discuss only the GWP impact category.
• Electrolytic technologies are better only if renewable energy electricity is used.
• ∼96% of GWP is by set up of turbine and H2 compression/storage in wind electrolysis.
• GWP of electrolyzer unit is minimal, about 43 g CO2 eq./kgH2 in wind electrolysis.

There are several hydrogen production technologies. They range from the most widely used fossil fuel based systems such as natural gas steam methane reforming to the least used renewable energy based systems such as wind electrolysis. Currently almost all the industrial hydrogen need worldwide is produced using fossil fuels. Electrolytic hydrogen production based on electricity generated from renewable resources and hydrogen's energetic use could contribute to the global need for a sustainable energy supply. However, these technologies are also not free from environmental burdens. A life cycle assessment (LCA) helps to identify such impacts considering the entire life cycle of the process chains.This paper reviews twenty-one studies that address the LCA of hydrogen production technologies, a majority of them employing electrolytic technologies. It has been observed that global warming potential (GWP) is the impact category analyzed by almost all the authors. Acidification potential (AP) ranks second. Other categories such as toxicity potential are often not analyzed. The main environmental concern associated with electrolytic hydrogen production is electricity supply. The GWP contribution of the electrolyzer unit is relatively small (e.g. only about 4% in wind based electrolysis including hydrogen production and storage systems). From an LCA perspective, it can be concluded that electrolysis using wind or hydropower generated electricity is one of the best hydrogen production technologies, compared to those using conventional grid electricity mix or fossil fuel feedstocks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cleaner Production - Volume 85, 15 December 2014, Pages 151–163
نویسندگان
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