论文部分内容阅读
通过生命周期评估(LCA)方法定量研究了采用烧碱蒽醌蒸煮生产非木材高质量纸浆对环境的影响。文中以特种纸浆厂为例,探讨了6个主要子系统(农业生产、化学品生产、发电、运输、制浆和废物处理)对环境的影响(影响类型有:非生物资源枯竭(AD)、全球变暖(GW)、臭氧层破坏(OLD)、对人的毒性(HT)、生态毒性、光化学氧化物形成(POF)、酸化(A)和富营养化(E))。研究结果表明,环境影响主要由化学品生产、发电和纤维生产(农业生产)中温室气体排放、含磷和氮化合物排放引起的。纸浆厂的生产活动对影响类型作用除GW占15%、E占6%和OLD占25%外,其余都很小。本研究旨在为以非木材原料为基础的工业(如纸浆生产和生物质精炼)提供有用的信息,以提高其可持续性。
Through the life cycle assessment (LCA) method, the environmental impact of caustic anthraquinone cooking to produce non-wood high quality pulp was quantitatively studied. Taking the specialty pulp mill as an example, the paper discusses the environmental impacts of six major subsystems (agricultural production, chemical production, power generation, transportation, pulping and waste treatment) on the following types of impacts: abiotic resource depletion (AD) Global Warming (GW), Ozone Depletion (OLD), Human Toxicity (HT), Ecotoxicity, Photochemical Oxide Formation (POF), Acidification (A) and Eutrophication (E)). The results show that the environmental impact is mainly caused by greenhouse gas emissions, phosphorus and nitrogen compounds emissions from chemical production, power generation and fiber production (agricultural production). Pulp mill production activities on the type of impact except GW accounted for 15%, E accounted for 6% and OLD accounted for 25%, the rest are very small. This study aims to provide useful information to non-wood based industries such as pulp production and biomass refining to enhance their sustainability.