共查询到19条相似文献,搜索用时 125 毫秒
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湖南万容科技有限公司 《中国环保产业》2010,(2):21-21
<正>2010年1月30日,湖南万容科技有限公司自主研发的"废旧冰箱无害化处理及资源回收技术及设备",在长沙通过了工业和信息化部组织的技术鉴定。该系统采用了双轴撕碎机+辊轮破碎机的机械方式,并利用大流量旋风器对整个箱体进行常温破碎分离,可 相似文献
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2020年9月22日,习近平主席在第七十五届联合国大会上郑重承诺,中国将提高自主贡献力度,采取更加有力的政策和措施,努力争取2060年前实现碳中和。电力部门是我国能源系统实现碳中和的关键,而生物质能源技术在电力部门的部署对于推动实现碳中和具有不可替代的重要意义。本文针对三类生物质能源的发电技术,包括生物质直燃/气化发电、生物质耦合发电、生物质与碳捕获封存技术联合发电,分析了技术的国内外发展现状,并从技术可行性、资源可行性、经济可行性和环境影响等方面评析了其在推动电力部门低碳转型过程中的可行性。同时,结合碳中和愿景下电力部门的减排要求及对相关技术潜力的最新研判,对生物质能源技术在我国电力部门的部署提出了相应的政策建议。 相似文献
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生物质能源是未来人类社会最重要的能源之一.利用已有统计资料和数据,定量估算了临沂市生物质能源资源潜力.研究表明,临沂市每年可利用生物质能源资源总量折合标准煤263.1万t,其中秸秆约占2/3,临沂市生物质能源密度比周边地区低.在摸清资源家底的基础上,探讨了临沂市生物质能源开发战略,即临沂市应大力发展小型、分布式生物质能源项目,谨慎发展大型生物质能源项目,不宜进行车用生物液体燃料开发,生物质能源的开发应同环境保护与社会主义新农村建设紧密结合. 相似文献
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介绍了生物质燃料及生物质循环流化床锅炉特点,以及生物质燃烧过程中NOX生成机理.综述了当前国内应用较广的生物质脱硝技术,结合生物质循环流化床锅炉及烟气特性,提出低氮燃烧+SNCR脱硝工艺、SNCR+低尘布置SCR工艺较为适合生物质循环流化床锅炉NOX减排. 相似文献
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本文对山东省内生物质利用CDM项目进行了讨论。生物质的利用是解决农村秸秆处理问题的有效途径,同时也减少了秸秆腐烂过程中的温室气体排放。尽管山东省生物质CDM项目进展顺利,但开发过程中仍存在一定的问题。本文在对山东生物质CDM项目分析的基础上,提出了发展生物质CDM项目和减少温室气体排放的建议。 相似文献
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将生物质转化成清洁、高品位、使用方便的能源,是吉林省农村能源建设的有效途径之一,对实现建设生态省目标具有深远意义,开发建设农村生物质能源只有实现商业化的开发,才能使其具有生命力,文章对商业化开发过程中可能面临的困难以及应采取的对策进行了探讨,并提出了具体的建议。 相似文献
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为促进我国生物质能源的发展,国家财政部正在研究建立成本分摊机制与风险分摊机制的财税政策,以推动中国生物质能源生产的快速健康发展。 相似文献
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本研究将人工制备的生物质炭以0%~2%范围的量添加到受试土壤中,通过比较生物质-土壤体系的理论吸附容量和实际吸附容量,初步阐明生物质炭与土壤的相互作用对BDE-47在土壤中的吸附行为的影响。当生物质炭的添加量为0.1%、0.5%、1.0%时,生物质炭与土壤的相互作用对BDE-47的吸附行为的影响不明显;当生物质炭添加量为2.0%,BDE-47的吸附平衡浓度Ce为0.95μg/L时,生物质炭与土壤的相互作用可以抑制土壤对BDE-47的吸附,使吸附能力降低了33%,而当Ce为9.5μg/L时,生物质炭与土壤的相互作用可以促进土壤对BDE-47的吸附,使吸附能力提高了146%。生物质炭与土壤的相互作用可以影响BDE-47在土壤中的吸附行为,影响程度的大小与生物质炭的添加量和吸附平衡浓度有关。 相似文献
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Stanley A. Nichols 《Journal of the American Water Resources Association》1982,18(3):521-523
ABSTRACT: This paper discusses the virtues of a stratified random system for sampling aquatic plant biomass. It also discusses factors which might be wed to stratify samples and it presents a case study of Lilly Lake, wisconsin, where a stratified random system reduced sampling efforts by about 37 percent. 相似文献
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通过对新疆巴里坤天然草地进行围栏(2a、4a、25a)和自由放牧处理,探讨不同干扰类型对草地植物多样性和生物量的影响.结果表明:在自由放牧制度下,由于干扰过于剧烈,草地已呈退化趋势,物种多样性和生物量均较低;在围栏草地中,随着围封年限的增加,群落高度、盖度、地上生物量逐渐增加;地上生物量的变化趋势为:放牧草地<围栏2a草地<围栏4a草地<围栏25a草地. 相似文献
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Sorption and desorption of Cd, Cu and Pb using biomass from an eutrophized habitat in monometallic and bimetallic systems 总被引:1,自引:0,他引:1
Lezcano JM González F Ballester A Blázquez ML Muñoz JA García-Balboa C 《Journal of environmental management》2011,92(10):2666-2674
This work examines the sorption capacity of a natural biomass collected from an irrigation pond. The biomass mainly consisted of a mixture of chlorophyte algae with caducipholic plants. Biosorption experiments were performed in monometallic and bimetallic solutions containing different metals commonly found in industrial effluents (Cd, Cu and Pb). The biosorption process was slightly slower in the binary system comparing with monometallic system which was related to competition phenomena between metal cations in solution. The biosorbent behaviour was quantified by the sorption isotherms fitting the experimental data to mathematical models. In monometallic systems, the Langmuir model showed a better fit with the following sorption order: Cu ~ Pb > Cd; and biomass-metal affinity order: Pb > Cd ~ Cu. In bimetallic systems, the binary-type Langmuir model was used and the sorption order obtained was: Pb ~ Cu > Cd. In addition, the effectiveness of the biomass was investigated in several sorption-desorption cycles using HCl and NaHCO(3). The recovery of metal was higher with HCl than with NaHCO(3), though the sorption uptake of the biomass was sensitively affected by the former desorption agent in subsequent sorption cycles. 相似文献
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V. Dornburg A. Faaij M. Patel W.C. Turkenburg 《Resources, Conservation and Recycling》2006,46(4):377-409
This paper analyses energy savings, GHG emission reductions and costs of bio-refinery systems for polylactic acid (PLA) production. The systems comprise ‘multi-functional’ uses of biomass resources, i.e. use of agricultural residues for energy consumption, use of by-products, and recycling and waste-to-energy recovery of materials. We evaluate the performance of these systems per kg of bio-based polymer produced and per ha of biomass production. The evaluation is done using data of Poland assuming that biomass and PLA production is embedded in a European energy and material market. First, the performance of different bio-refinery systems is investigated by means of a bottom-up chain analysis. Second, an analysis is applied that derives market prices of products and land depending on the own-price elasticity of demand. Thus, the costs of bio-refinery systems depending on the demand of land and material are determined. It is found that all PLA bio-refinery systems considered lead to net savings of non-renewable energy consumption of 70–220 GJ/(ha yr) and net GHG emission reductions of 3–17 Mg CO2eq/(ha yr). Most of these PLA bio-refinery systems lead to net costs for the overall system of up to 4600 €/(ha yr). PLA production from short rotation wood leads to net benefits of about 1100 €/(ha yr) if a high amount of a high value product, i.e. fibres, is produced. Multi-functionality is necessary to ensure the viability of PLA bio-refinery systems from biomass with regard to energy savings and GHG emission reduction. However, the multi-functional use of biomass does not contribute much to overall incomes. Multifunctional biomass use – especially the use of biomass residues for energy consumption – contributes significantly to savings of non-renewable energy sources. Own-price elasticity of the demand for materials influences the overall costs of the bio-refinery system strongly. The own-price elasticity of land demand markets could become important if bio-refineries are introduced on a large scale. 相似文献
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Nazanin Shabani 《International Journal of Green Energy》2016,13(7):631-641
Mathematical programming models have been used to optimize the design and management of forest bioenergy supply chains. A deterministic mathematical model is beneficial for making optimum decisions; however, its applicability to real-world problems may be limited because it does not capture all the complexities, including uncertainties in the parameters, in the supply chain. In this paper, a combination of Monte Carlo Simulation and optimization model is used to evaluate the impact of uncertainty in biomass quality, availability and cost, and electricity prices on the supply chain of a forest biomass power plant. The optimization model is a deterministic mixed integer non-linear model with monthly time steps over a 1-year planning horizon. Variability in biomass quality, i.e. moisture content (MC) and higher heating value (HHV), based on the historical data of a real case study is studied in detail and fitted probability distributions are used in the model, while for electricity prices different scenarios are considered. The results show that the impact of variability in the MC on profit is higher than that of uncertainty in HHV. It is observed that the annual profit ranges between $13.3 million and $17.9 million in the presence of all possible uncertainties while its average is $15.5 million. Uncertainty in biomass availability and cost and electricity price results in the risks of having annual profit of less than $14 million and low monthly storage levels. 相似文献
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Marcin Dębowski Marcin Zieliński Anna Grala 《International Journal of Green Energy》2016,13(4):395-407
This study was aimed at establishing the feasibility of microalgae biomass acquisition from waters of the Vistula Lagoon with the use of an installation operating in the fractional–technical scale, and at determining the effectiveness of biogas production from the acquired substrate. Depending on the technological solution of the concentration process, the degree of aquatic biomass hydration ranged from 99.6 to 97.90%. The quantity of biogas produced during methane fermentation fitted within the range of 243.9 to 395.2 dm3/kg d.m.. The values achieved were found to depend directly on the concentration of organic matter in the acquired water biomass and on system’s loading with a feedstock of organic compounds. The content of methane in a gaseous mixture ranged from 41.4 to 61.9%. The biomass produced was predominated by taxa belonging to Cyanoprokaryota, Bacillarophyceae, and Chlorophyta. 相似文献
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土壤微生物是表征土壤质量最有潜力的敏感性指标,高质量的土壤应具有稳定的微生物群落组成和结构、高微生物生物量及良好的微生物活性。本文从微生物的群落组成与多样性、微生物生物量和微生物活性3个方面进行了综述。微生物指标研究目前任务是确定一套评价土壤质量的微生物学指标最小参数集。建议今后加强土壤样品收集、储存、预处理及分析方法规范化,深层土壤微生物对土壤质量的作用及建立本底土壤微生物属性数据库等方面的研究。 相似文献