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论文类型：期刊论文

发表时间：2016-09-01

发表刊物：ATMOSPHERIC ENVIRONMENT

收录刊物：SCIE、EI、Scopus

卷号：141

页面范围：312-319

ISSN号：1352-2310

关键字：PM2.5; OC; EC; Biomass pellets; Pelletized biomass-coal blends

摘要：Bulk biofuel, biomass pellets and pelletized biomass-coal blends were combusted in a typical rural conventional household stove and a high-efficiency stove. Reductions in PM2.5, organic carbon (OC) and elemental carbon (EC) emissions were evaluated by comparing emission factors (EFs) among 19 combinations of biofuel/residential stove types measured using a dilution sampling system. In the low efficiency stove, the average EFs of PM2.5, OC, and EC of biomass pellets were 2.64 +/- 1.56, 0.42 +/- 0.36, and 0.30 +/- 0.11 g/kg, respectively, significantly lower than those burned in bulk form. EFPM2.5 and EFOC of pelletized biomass combustion in the high-efficiency stove were lower than those of the same biofuel burned in the low-efficiency stove. Furthermore, pelletized corn residue and coal blends burned in the high-efficiency stove could significantly decrease emissions. Compared with the bulk material burned in the low-efficiency stove, the reduction rates of PM2.5, OC and EC from pelletized blends in the high-efficiency stove can reach 84%, 96% and 93%, respectively. If the annually produced corn residues in 2010 had been blended with 10% anthracite coal powder and burnt as pellets, it would have reduced about 82% of PM2.5, 90-96% of OC and 81-92% of EC emission in comparison with burning raw materials in conventional household stoves. Given the low cost, high health benefit and reduction effect on atmospheric pollutants, pelletized blends could be a promising alternative to fossil fuel resources or traditional bulk biofuel. (C) 2016 Elsevier Ltd. All rights reserved.