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Exploring the Emission Characteristics and Reduction Potential of Air Pollutants From Chinese Aluminum Industry: 2005–2025

机译:探索中国铝业空气污染物的排放特性和减少潜力:2005-2025

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Amidst the rising desire for environmental governance in China, the aluminum industry has aroused more extensive attention because of the intensive energy consumption. Based on the process‐based life cycle assessment (PLCA) method, emissions of nine typical air pollutants (PM, SO2, NOX, VOCs, CO, CO2, fluoride, asphalt fume, and PFCs) by the primary aluminum industry in China over the period 2005–2017 were calculated. The production process of aluminum industry was decomposed into three primary processes (alumina, carbon for aluminum, and electrolytic aluminum), and corresponding emission sources (fuel combustion, power consumption, and production process) were identified. The contributions of different processes and emission sources were then compared and spatiotemporal changes and their relation with existing policies were determined. The results show that the production of aluminum and the indirect source of electricity power are the dominant driving forces of air pollutants emissions of China's primary aluminum industry and aluminum production process, respectively. Pollutant‐emitting areas of the aluminum industry differed considerably. The country's industrial policies were discovered to strongly influence the emissions of aluminum industry. Based on the emission inventory, three scenarios were established to project the potential of emission reduction of air pollutants from the aluminum industry in China until the year 2025. In addition, the effectiveness of China's heavy pollution emergency response policy was evaluated. It suggests differentiated emergency control mode would be a more effective pathway for reducing the emissions of air pollutants by the aluminum industry.
机译:在中国环境治理的渴望上升,铝业由于强化能耗而引起更广泛的关注。基于基于过程的生命周期评估(PLCA)方法,在中国的原代铝工业中,九个典型空气污染物(PM,SO2,NOX,VOC,CO,CO2,氟化物,沥青烟雾和PFC)的排放计算2005 - 2017年期间。铝工业的生产过程被分解为三个主要方法(氧化铝,铝,电解铝,电解铝),并确定了相应的发射源(燃料燃烧,功耗和生产过程)。然后比较不同过程和排放来源的贡献,并确定了时尚的变化及其与现有政策的关系。结果表明,铝的生产和间接电力源是中国初级铝业和铝生产过程的空气污染物排放的主导驱动力。铝工业的污染物排放区域大大不同。该国的产业政策被发现强烈影响铝业的排放。基于排放库存,建立了三种情景,将中国铝业空气污染物减排潜力达到2025年。此外,评估了中国重污染应急政策的有效性。它表明差异化的应急控制模式将是更有效的途径,用于减少铝业的空气污染物排放。

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