Waste-to-Resource: Pyrolytic Biochar as a key contributor to the Circular Economy

废物资源化：热解生物炭是循环经济的关键贡献者

• 批准号: RGPIN-2019-06631
• 负责人: Berruti, Franco
• 金额: $ 3.35万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=716209
• 关键词: Waste; Resource; Pyrolytic; Biochar; key

The traditional waste management system of using and disposing contributes to the depletion of raw resources, the exhaustion of sites suitable for landfilling, the dispersion of toxic materials in the environment, and the generation of greenhouse gases. As a result, mimicking nature, the concept of “circular economy” has been proposed, aiming at maintaining the utility of products, co-products and wastes and retain their value by utilizing the outputs of one process as the input to another, leading to zero-waste solutions and closed-loop systems. Often the most fertile areas of discovery and innovation lie at the intersection of traditional disciplines. Therefore, the proposed research aims at discovering and studying the integration opportunities of bio- and thermo-conversion to find new solutions and maximize environmental and economic benefits and contribute to the “circular economy”. The long-term goal of the Discovery grant is the development of solutions to produce value-added energy and chemicals from a variety of different sustainable feedstocks of low or negative value. The short-term goals include the investigation of a synergistic combination and integration of technologies for advanced reaction and separation processes, aimed at valorizing both liquid and solid products, focusing on optimizing multiple uses of pyrolytic bio-char as a key contributor to the circular economy. These objectives will be achieved through 4 projects addressing (1) the pyrolytic conversion of the lignin-rich anaerobic digestion solid residues (digestate) into quality bio-char and phenolic-rich bio-oil; (2) the bio-conversion of the aqueous pyrolysis product fraction, separated by fractional condensation, into methane by anaerobic digestion; (3) the use of raw and modified bio-chars as adsorbents of contaminants from the gaseous (carbon dioxide and H2S) and liquid effluents (toxic metals, pharmaceuticals, hormones,..) of the anaerobic digestion process and for other potential uses as value-added materials (catalysts, fillers, electrical components, food and feed additives,); and (4) the use of bio-char to optimize the anaerobic digestion process by reducing inhibition and creating optimal environments for bacterial activity. It is expected that new conversion pathways will be discovered which will be transferred to the benefits of both the scientific community and industry, generating economic and environmental value, while educating and training well prepared HQP.

传统的使用和处置废物管理系统导致了原材料的枯竭、适合填埋的场地的耗尽、有毒物质在环境中的扩散以及温室气体的产生，其结果是模仿自然的概念。提出了“循环经济”的概念，旨在通过利用一个过程的输出作为另一个过程的输入来保持产品、副产品和废物的效用并保留其价值，从而形成零废物解决方案和闭环系统。通常，最丰富的发现和创新领域位于传统学科的交叉点，因此，拟议的研究旨在发现和研究生物和热转化的整合机会，以找到新的解决方案并最大限度地提高环境和经济效益并做出贡献。探索资助的长期目标是开发利用各种低价值或负价值的可持续原料生产增值能源和化学品的解决方案。协同组合和整合先进反应和分离工艺技术，旨在提高液体和固体产品的价值，重点优化热解生物炭的多种用途，作为循环经济的关键贡献者。这些目标将通过四个项目来实现：(1)热解。 (2)水热解的生物转化通过分馏冷凝分离的产物部分，通过厌氧消化转化为甲烷；(3) 使用原始和改性生物炭作为气态（二氧化碳和 H2S）和液态流出物（有毒金属、药品、激素、 ..) 厌氧消化过程以及作为增值材料的其他潜在用途（催化剂、填料、电气元件、食品和饲料添加剂）； (4) 使用生物炭通过减少抑制并为细菌活动创造最佳环境来优化厌氧消化过程。预计将发现新的转化途径，这将给科学界和社会双方带来好处。产业，创造经济和环境价值，同时教育和培训准备充分的 HQP。