Energy Potential of Agri Residual Biomass in Southeast Asia with the Focus on Vietnam
Table 6. Production quantity and energy yield of paddy rice residual biomass in Vietnam per year. Region
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- Điều hướng trang này:
- Vietnam 96,901,200 1,371,152 380.88 8,809,200 127,293 35.36
| Table 6.
Production quantity and energy yield of paddy rice residual biomass in Vietnam per year. Region Rice Straw Rice Husks Production (t) Energy Potential Production (t) Energy Potential (TJ) (TWh) (TJ) (TWh) Mekong River Delta 53,915,180 762,900 211.92 4,901,400 70,825 19.67 Northern Central area and Central coastal area 15,531,120 219,765 61.05 1,411,920 20,402 5.67 Red River Delta 13,855,600 196,057 54.46 1,259,600 18,201 5.06 Northern midlands and Mountain areas 7,442,160 105,307 29.25 676,600 9776 2.72 South East 3,121,580 44,170 12.27 283,800 4101 1.14 Central Highlands 3,035,560 42,953 11.93 275,960 3988 1.11 Vietnam 96,901,200 1,371,152 380.88 8,809,200 127,293 35.36 With regards to residues, there is still a significant lack of data about its availability and produced quantities. The review by Lim et al. [ 31 ] summarized the estimated data of paddy rice residue production on different continents. Furthermore, it showed the gap of information in the case of individual countries, e.g., Vietnam. According to recent publications [ 8 , 9 ], it was predicted that about 72.7 million tons of rice straw could be available for energy purposes in Vietnam. This number is lower than the quantity calculated in this study, probably due to the increased paddy yields during the years or bigger residue ratio, which was taken into account, or reduction in postharvest straw losses. However, another current study [ 16 ] stated that approximately 8.55 million tons of rice husks were generated in Vietnam in 2018, which corresponds to our calculations. Table 6 shows that the potential of energy stored in rice straw and rice husks consid- ering its vast production is massive. Furthermore, it illustrates that the energy potential in husks can be 11 times as much in straw. The average estimated household energy consumption in Vietnam is 4492 kWh annually, where 74% is electricity consumption and 26% is the energy needed for cooking (liquefied petroleum gas) [ 73 ]. It implies that the full capacity of residual biomass from paddy rice could theoretically cover the energy needs of over 92 million households. The highest energy potential of paddy residues lies in the Mekong River Delta region (around 230 TWh), which accounts for more than half of the entire country’s potential. From rice straw biomass only, the Mekong River Delta could supply up to 47 million households in the region with energy for a year. Overall, the five top provinces with the most extensive availability and energy potential of rice straw and rice husks are located in the Mekong River Delta region (see Table 7 ). The most productive province is Kien Giang, with over 40 TWh per year, greater than that in some regions in Vietnam (like Northern midlands and Mountain areas region, South East, Central Highlands). tải về 1.15 Mb. Chia sẻ với bạn bè của bạn:
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