04157nas|a2200421 i 4500 20260818145357.0 280101s2000 th uu m rtt 00| a1eng d .b11818736 AIT Thesis no. ET-00-10 Anandarajah, Gabrial Least-cost emission mitigation options for the urban transportation system : the case of Kathmandu Valley, Nepal Bangkok : Asian Institute of Technology, 2000 154 leaves Thesis ; no. ET-00-10 A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering Thesis (M.Eng.) - Asian Institute of Technology This study has focussed on transport demand, forecasted until year 2020 and all the analyses are done with tluee economic and four technological emission mitigation scenarios. In recent years, policy makers in the Kathmandu Valley have been working to monitor and mitigate worsening levels of air pollution. Total emission of pollutants (CO, HC, NOx, S02, TSP and Pb) from the transport sector in 1998 was more than 73,000 tons, of which about half was CO. Gasoline vehicles contributes more than 90% of the total emission. What options should the policy makers select to prevent and control these problems? Because the transport sector make the largest contribution (more than 58% of the total emission), this study analyzes the pollutants emitted by motor vehicles, their impacts on air quality with different technological options and determine the most cost-effective options to control the pollutants. The technological options, electric vehicle, CNG vehicle, LPG vehicle, emission control device (catalytic converter) are considered for emission mitigation. This study has been carried out using the Long-range Energy Alternative Planning System (LEAP) model for the forecasting of energy demand and emission levels. Economic scenario analyses, Low economic growth and high economic growth says that the total emission by 2020 would be between 195 and 870 thousands tons as compared to 73 thousands tons in 1998. According to the estimation of concentration of pollutant on ambient air in BAU scenario, the concentrations (annual mean) of TSP and SOx are expected to exceed the WHO standard by 2005 and 2010 respectively. From the analyses of technological emission mitigation options, it is seen that the highest reduction in total energy demand and total emission levels would be achieved by Scenario 4 under which about 57% of the total emission would be reduced by 2020. Marginal pollution abatement cost for TSP is much higher than that of CO (about 50 times) at Least-Cost BAU scenario 1 emission levels. The estimated marginal pollution abatement cost of CO emission is 723 $/ton at Least-Cost BAU scenario 1 emission level. Transportation and state Nepal Kathmandu Environmental aspects Shrestha, Ram M., Chairperson Savin, Daniel V., Examination committee Bhattacharya, Sribas C., Examination Committee Nguyen, Thi Kim Oanh, Examination Committee H. M. Queen Sirikit, Scholarship Donor Asian Institute of Technology. Thesis ; no. ET-00-10 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B06794 .b11818736 mnait u 240401 0 010128 m a u 0 mnait mnait mnarc 20 40 Barcode : 30050120749808 CREATED : 1999-08-31 RECORD # : i12233559 LPATRON : 1032067 LCHKIN : 2023-08-25 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 11 TOT RENEW : 14 Barcode : 30050120749790 CREATED : 1999-08-31 RECORD # : i12233560 LPATRON : 1014514 LCHKIN : 2002-02-19 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 10 TOT RENEW : 1 Barcode : 30050120347298 CREATED : 2016-06-15 RECORD # : i13038114 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 69004 69004 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ET-00-10 30050120749808 2026-08-18 14:53:57 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. ET-00-10 30050120749790 2026-08-18 14:53:57 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. ET-00-10 30050120347298 2026-08-18 14:53:57 2026-08-18 40