Traditional Emissions from China 1 Agricultural Machineries: A Mini Review
Aulia Nur Mustaqiman*

Study Program of Environmental Engineering, Faculty of Agricultural Technology, University of Brawijaya, Indonesia.

*Corresponding author^s email: aulia.nm[at]ub.ac.id

Abstract

Downstreaming agricultural mechanization is a key indicator of agricultural modernization and a vital strategy for promoting sustainable development. However, agricultural machinery also has consequences, such as contributing to traditional air emissions that impact the environment. The 2020 China Agricultural Machinery Industry Yearbook reported that the total power of agricultural machinery in China was 1,027.6 million kW. This study aimed to review and observe traditional emissions from various agricultural machinery based on literatures review. The result exhibited that the tractor engines significantly contributed to traditional emissions, responsible for 59.0% of NOx emissions and 60.1% of PM emissions. Harvesters contributed 4.8% of NOx emissions and 3.4% of PM emissions. The report also details emission figures, including 352,000 tons of HC, 2,105,000 tons of NOx, and 210,000 tons of PM. Therefore, agricultural machinery is a significant source of pollution from non-road mobile machinery, necessitating an in-depth review of the emissions produced by these equipment. A study from another country reported that agricultural machinery in Beijing emitted 855.43 tons of CO, 184.87 tons of HC, 1,108.83 tons of NOx, and 93.62 tons of PM. Using 2016 as a reference year, the contribution rates of various agricultural machinery to pollutant emissions were calculated for CO, HC, NOx, PM, and total emissions. Tractor emissions accounted for over 80% of these pollutants, making tractors the highest contributors, followed by combined harvesters. In addition, the total NOx emission factors for China I tractors were 1.18 and 1.73 times higher than those for China II and III tractors, respectively.

Keywords: Air Pollutant- Harvester- Tractor- Traditional Emission

Topic: Waste and environmental management