scholarly journals Review and Harmonization of the Life-Cycle Global Warming Impact of PV-Powered Hydrogen Production by Electrolysis

2021 ◽  
Vol 2 ◽  
Author(s):  
Olga Kanz ◽  
Karsten Bittkau ◽  
Kaining Ding ◽  
Uwe Rau ◽  
Angèle Reinders
Keyword(s):  
Global Warming ◽  
Life Cycle ◽  
Hydrogen Production ◽  
Environmental Impact ◽  
Production Systems ◽  
Absolute Difference ◽  
Global Warming Impact ◽  
Maximum Absolute Difference ◽  
Electrolytic Hydrogen ◽  
Wide Range

This work presents a review of life-cycle assessment (LCA) studies of hydrogen electrolysis using power from photovoltaic (PV) systems. The paper discusses the assumptions, strengths and weaknesses of 13 LCA studies and identifies the causes of the environmental impact. Differences in assumptions of system boundaries, system sizes, evaluation methods, and functional units make it challenging to directly compare the Global Warming Potential (GWP) resulting from different studies. To simplify this process, 13 selected LCA studies on PV-powered hydrogen production have been harmonized following a consistent framework described by this paper. The harmonized GWP values vary from 0.7 to 6.6 kg CO2-eq/kg H2 which can be considered a wide range. The maximum absolute difference between the original and harmonized GWP results of a study is 1.5 kg CO2-eq/kg H2. Yet even the highest GWP of this study is over four times lower than the GWP of grid-powered electrolysis in Germany. Due to the lack of transparency of most LCAs included in this review, full identification of the sources of discrepancies (methods applied, assumed production conditions) is not possible. Overall it can be concluded that the environmental impact of the electrolytic hydrogen production process is mainly caused by the GWP of the electricity supply. For future environmental impact studies on hydrogen production systems, it is highly recommended to 1) divide the whole system into well-defined subsystems using compression as the final stage of the LCA and 2) to provide energy inputs/GWP results for the different subsystems.

scholarly journals Life Cycle Assessment Applications To The Dry Steam Geothermal Power Generation (Case Study: Star Energy Geothermal Wayang Windu, Ltd, Indonesia)

2019 ◽  
Author(s):  
Rina Annisa ◽  
Benno Rahardyan
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Power Plant ◽  
Environmental Impact ◽  
Global Warming Potential ◽  
Geothermal Power Plant ◽  
Continual Improvement ◽  
Acidification Potential ◽  
Geothermal Power

Geothermal potential in Indonesia estimate can produced renewable energy 29 GW, and until 2016 it still used 5% or about 1643 MW in. From that result, about 227 MW produced by Wayang Windu geothermal power plant. The Input were raw material, energy and water. These input produced electricity as main product, by product, and also other output that related to environment i.e. emission, solid waste and waste water. All environmental impacts should be controlled to comply with environmental standard, and even go beyond compliance and perform continual improvement.  This research will use Life Cycle Assessment method based on ISO 14040 and use cradle to gate concept with boundary from liquid steam production until electricity produced, and Megawatt Hours as the functional unit. Life Cycle Inventory has been done with direct input and output in the boundary and resulted that subsystem of Non Condensable Gas and condensate production have the largest environmental impact. LCI also show that every MWh electricity produced, it needed 6.87 Ton dry steam or 8.16 Ton liquid steam. Global Warming Potential (GWP) value is 0.155 Ton CO2eq./MWh, Acidification Potential (AP) 1.69 kg SO2eq./MWh, Eutrophication Potential (EP) 5.36 gPO4 eq./MWh and land use impacts 0.000024 PDF/m2. Life Cycle Impact Assessment resulted that AP contribute 78% of environmental impact and 98% resulted from H2S Non Condensable Gas. Comparison results with another dry steam geothermal power plant show that impact potential result of the company in good position and there’s a strong relation between gross production, GWP and AP value.Keywords: Life cycle assessment; Geothermal; Continual Improvement; Global Warming Potential; Acidification Potential

Assessment of the environmental impact of carnivorous finfish production systems using life cycle assessment

2009 ◽  
Vol 17 (3) ◽  
pp. 354-361 ◽  
Author(s):  
J. Aubin ◽  
E. Papatryphon ◽  
H.M.G. van der Werf ◽  
S. Chatzifotis
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Production Systems

scholarly journals Life Cycle Assessment of a Barge-Type Floating Wind Turbine and Comparison with Other Types of Wind Turbines

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5656
Author(s):  
Nurullah Yildiz ◽  
Hassan Hemida ◽  
Charalampos Baniotopoulos
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Wind Turbine ◽  
Wind Turbines ◽  
New Technologies ◽  
Renewable Energy Sources ◽  
Life Cycles ◽  
Floating Wind Turbine

The intensive increase of global warming every year affects our world negatively and severely. The use of renewable energy sources has gained importance in reducing and eliminating the effect of global warming. To this end, new technologies are being developed to facilitate the use of these resources. One of these technological developments is the floating wind turbine. In order to evaluate the respective environmental footprint of these systems, a life cycle assessment (LCA) is herein applied. In this study, the environmental impact of floating wind turbines is investigated using a life cycle assessment approach and the results are compared with the respective ones of onshore and jacket offshore wind turbines of the same power capacity. The studied floating wind turbine has a square foundation that is open at its centre and is connected to the seabed with a synthetic fibre-nylon anchorage system. The environmental impact of all life cycles of such a structure, i.e., the manufacture, the operation, the disposal, and the recycling stages of the wind turbines, has been evaluated. For these floating wind turbines, it has been found that the greatest environmental impact corresponds to the manufacturing stage, whilst the global warming potential and the energy payback time of a 2 MW floating wind turbine of a barge-type platform is higher than that of the onshore, the jacket offshore (2 MW) and the floating (5 MW) wind turbines on a sway floating platform.

scholarly journals Environmental impact of tofu production in West Jakarta using a life cycle assessment approach

2021 ◽  
Vol 896 (1) ◽  
pp. 012050
Author(s):  
I P Sari ◽  
W Kuniawan ◽  
F L Sia
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Ozone Depletion ◽  
Impact Analysis ◽  
Whole Process ◽  
Assessment Approach ◽  
Cradle To Gate ◽  
The Impact

Abstract Tofu is one of the processed soybean foods that are very popular with Indonesian society. Despite the popularity of Tofu, Tofu production in Indonesia is generally small and medium, reaching 500 kg per day, as in the tofu factory in Semanan, West Jakarta. The purpose of this study is to analyze the environmental impact of tofu production in West Jakarta. The life cycle assessment (LCA) approach was used to achieve this goal with SimaPro software for impact calculations. This research applies the LCA cradle to gate, which consists of soybean cultivation, transportation, and tofu production processes. The environmental impacts of tofu production analyzed in this study include global warming, ozone depletion, acidification, and eutrophication. The impact analysis showed that the acquisition of soybeans, which consisted of soybean cultivation and transportation, had the most significant environmental impact with a global warming potential value of 0.882 kg CO2 eq out of a total of 0.978 CO2 eq for the whole process.

scholarly journals Studi Life Cycle Assessment Produksi Gula Tebu : Studi Kasus di Jawa Timur

Rekayasa ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 197-204
Author(s):  
Marudut Sirait
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Impact Assessment ◽  
Life Cycle Impact Assessment ◽  
Ozone Depletion ◽  
Centrifugal Separation ◽  
Evaporation Process ◽  
Human Toxicity

Tujuan dari makalah ini adalah untuk mengidentifikasi potensi dampak lingkungan selama proses produksi gula tebu di Jawa Timur Indonesia. Studi ini menggunakan pendekatan Life Cycle Assesment (LCA) untuk mengevaluasi dampak  lingkungan selama proses produksi gula dari tebu. Analisis LCA fokus pada pengolahan tebu menjadi gula, yang terdiri dari proses persiapan, proses miling, centrifugal separation, proses clarification, proses evaporation, dan proses crystalization. Hasil Life Cycle Impact Assessment (LCIA) diekpresikan dengan metode EDIB 2003, menunjukkan bahwa dampak lingkungan yang paling signifikan terhadap penurunan kualitas lingkungan adalah  global warming, acidification, eutrofikasi, human toxicity air, dan ozone depletion. Selanjutnya, proses produksi gula yang paling besar kontribusnya pada dampak lingkungan adalah proses penggilingan/miling, diikuti oleh proses centrifugal seperation,proses clarification, proses crystallization,proses evaporation, dan proses preperation untuk semua kategori dampak lingkungan.Life Cycle Assessment Study of Sugarcane: The case of East JavaABSTRACTThe purpose of this paper is to identify potential environmental impacts during the process of sugarcane production in East Java, Indonesia. This study utilized Life Cycle Assessment (LCA) approach to evaluate the environmental impact during the manufacturing of sugar cane. LCA analysis focuses on processing sugarcane, which consists of the preparation process, the milling process, centrifugal separation, the clarification process, the evaporation process, and the crystalization process. The Life Cycle Impact Assessment (LCIA) was expressed by the EDIB 2003 method. The result showed that the most significant environmental impacts on environmental degradation were global warming, acidification, eutrophication, human toxicity of water, and ozone depletion. Furthermore, the production process with the greatest contribution to environmental impact were the miling process, followed by centrifugal seperation process, clarification process, crystallization process, evaporation process, and preperation process for all categories of environmental impacts.Keywords: Environmental Impact, Energy, Sugarcane, Global Warming, Life Cycle Assessment

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