Carbon Footprint Reduction from Bangkok Urban Home Vegetable Garden
Suwanna Poonpolsup, Napat Jakrawatana, Mechai Pattarapremcharoen, Worajit Setthapun
IIRE International Journal of Renewable Energy · 2017
The objective of this work is to evaluate carbon footprint reduction from vegetables of Bangkok Urban Home Vegetable Garden model (BUG) compared with commercial vegetables. The BUG model was developed based on appropriate home gardens in Bangkok and applied the concept of pesticide-free agriculture. The information on Bangkok home gardens were obtained from questionnaires by accidental sampling in Bangkok urban area, who are customer of pesticide-free vegetable stores, and who are interested in home gardening. Life cycle analysis was used to evaluate the environmental impact of CO2 emissions of Chinese kale, Chinese cabbage, bird pepper, holy basil and sweet basil for the Bangkok area. The results revealed that vegetables from the BUG model emit 0.0753 kgCO2eq/kg of vegetable (37.8%) less than commercial vegetables. Total GHG emission of vegetable cultivation and raw material transportation in Bangkok is 6,542,700 kgCO2eq. Total GHG emission reduction for Bangkok is approximately 2,446,655 kgCO2eq in changing from commercial vegetables cultivation and raw material transportation into BUG model for 5 types of vegetables. One of the main GHG emission reduction is vegetables transportation from the other provincial production source to the selling points in Bangkok which account for 992,020 kgCO2eq.
Economic assessment of regional bioenergy systems in Australia: a flow analysis application
Napat Jakrawatana, Stephen J. Moore, Iain MacGill
International Journal of Environment and Pollution · 2009
This paper describes a modelling tool that integrates Material Flow Analysis, energy production and Greenhouse Gas (GHG) emissions accounting for biomass flows at a regional scale. This tool allows comprehensive analysis of alternative systems for management of biomass waste and bioenergy production in regional areas. Different possible options for processing a range of biomass waste streams can be evaluated against multiple criteria including various environmental impacts and cost-effectiveness. The objective is to support the design of integrated biomass waste and bioenergy systems that maximise synergies and optimise tradeoffs between bioenergy production, GHG emissions, recycling of valuable soil nutrients and control of harmful contaminants. This analytical tool is applied to a major agricultural region in Australia, the Murrumbidgee Irrigation Area. A scenario demonstrates how the construction of different types of bioenergy plant can offer valuable benefits with regard to renewable energy production, GHG emission reductions, increasing phosphorus cycling back to soils and reduced cadmium contamination.
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