Parallel production of biodiesel and bioethanol in palm-oil-based biorefineries: life cycle assessment on the energy and greenhouse gases emissions

2011 ◽  
Vol 5 (2) ◽  
pp. 132-150 ◽  
Author(s):  
Steven Lim ◽  
Keat Teong Lee
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Greenhouse Gases ◽  
Palm Oil ◽  
Greenhouse Gases Emissions

Greenhouse gases emissions in liquified natural gas as a marine fuel: Life cycle analysis and reduction potential

2021 ◽  
Author(s):  
Ahmad Al‐Douri ◽  
Abdulrahman S. Alsuhaibani ◽  
Margaux Moore ◽  
Rasmus Bach Nielsen ◽  
Amro A. El‐Baz ◽  
...  
Keyword(s):  
Life Cycle ◽  
Natural Gas ◽  
Greenhouse Gases ◽  
Life Cycle Analysis ◽  
Reduction Potential ◽  
Marine Fuel ◽  
Greenhouse Gases Emissions

scholarly journals Is Agriculture Always a GHG Emitter? A Combination of Eddy Covariance and Life Cycle Assessment Approaches to Calculate C Intake and Uptake in a Kiwifruit Orchard

2021 ◽  
Vol 13 (12) ◽  
pp. 6906
Author(s):  
Federica Rossi ◽  
Camilla Chieco ◽  
Nicola Di Virgilio ◽  
Teodoro Georgiadis ◽  
Marianna Nardino
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Greenhouse Gases ◽  
Eddy Covariance ◽  
Large Scale ◽  
Cropping Systems ◽  
Substantial Reduction ◽  
Co2 Absorption ◽  
Positive Contribution ◽  
Efficiency Ratio

While a substantial reduction of GHG (greenhouse gases) is urged, large-scale mitigation implies a detailed and holistic knowledge on the role of specific cropping systems, including the effect of management choices and local factors on the final balance between emissions and removals, this last typical of cropping systems. Here, a conventionally managed irrigated kiwifruit orchard has been studied to assess its greenhouse gases emissions and removals to determine its potential action as a C sink or, alternately, as a C source. The paper integrates two independent approaches. Biological CO2 fluxes have been monitored during 2012 using the micrometeorological Eddy covariance technique, while life cycle assessment quantified emissions derived from the energy and material used. In a climatic-standard year, total GHG emitted as consequence of the management were 4.25 t CO2-eq−1 ha−1 yr−1 while the net uptake measured during the active vegetation phase was as high as 4.9 t CO2 ha−1 yr−1. This led to a positive contribution of the crop to CO2 absorption, with a 1.15 efficiency ratio (sink-source factor defined as t CO2 stored/t CO2 emitted). The mitigating activity, however, completely reversed under extremely unfavorable climatic conditions, such as those recorded in 2003, when the efficiency ratio became 0.91, demonstrating that the occurrence of hotter and drier conditions are able to compromise the capability of Actinidia to offset the GHG emissions, also under appropriate irrigation.

scholarly journals Energy Balance Calculation with Life Cycle Assessment for Production of Palm Biodiesel in Indonesia

2019 ◽  
Vol 125 ◽  
pp. 10005
Author(s):  
Yoyon Wahyono ◽  
H. Hadiyanto ◽  
Mochamad Arief Budihardjo ◽  
Widayat
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Balance ◽  
Production Process ◽  
Palm Oil ◽  
Positive Energy ◽  
Balance Analysis ◽  
Positive Energy Balance ◽  
Energy Balance Analysis ◽  
Energy Surplus

Energy balance analysis study for the production process of biodiesel needs to be done to find out whether a production process of biodiesel activity has a surplus energy or minus energy. This study aims to analyse the balance of energy of the plantation of palm, production of palm oil, and production process units of biodiesel with the life cycle assessment in Banyuasin - Indonesia. The results of this study indicate that the largest energy input in the plantation of palm, production of palm oil, and production process units of biodiesel sequentially is the use of urea as N-fertilizer, electricity, and methanol. The value of NEB and NER in the production process of palm biodiesel sequentially is 5871 MJ and 1.17. Finally, the production process of palm biodiesel in Banyuasin area has a positive energy balance. The activity of production of palm biodiesel is proper to operate because it produces an energy surplus.

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