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Efficient utilization of biochar for water remediation and soil amendment - towards a circular economy

有效利用生物炭进行水体修复和土壤改良——迈向循环经济

基本信息

批准号：
2747765
负责人：
金额：
--
依托单位：
University of Strathclyde
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2021
资助国家：
英国
起止时间：
2021 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2747765
关键词：
Efficient utilization biochar water remediation

项目摘要

Biochar is a sorbent material and the main solid product available from the thermochemical conversion of biomass. It has uses in a variety of environmental applications including the removal of pollutants from water and soil amendment. The global biochar market is set to reach a value of USD3.3 billion by 2025 based on its annual growth rate of 13% since 2015. Eutrophication in water bodies is a significant environmental problem cause by excess nutrients in water. One common cause of eutrophication is run off ground water contaminated with phosphate and nitrate from the leaching of chemical fertilisers. Biochar can adsorb excess phosphate and nitrate from water leaving a spent biochar which is suitable for use as a slow-release fertiliser - both cleaning water and removing a major pollution source. Currently multiple studies have been carried out in which various chemically activated biochars have been used for removal of phosphate and nitrate from water, then used as a slow-release fertiliser. While current research provides evidence this process could be successful, the research has been carried out at lab scale and predominantly in simple solutions of few different ions. Using experimental methods and computational modelling, this project will assess the performance of currently existing biochar activation methods in real eutrophic water and plant beds at SustainableThinkingScotland site. Following this, the project will aim to create a new novel biochar activation method with improved performance compared to current activation methods currently available in literature. This will allow for a more efficient process capable of being scaled up for real life use.

生物炭是一种吸附剂材料，也是生物质热化学转化的主要固体产物。它可用于各种环境应用，包括从水和土壤改良剂中去除污染物。根据自2015年以来13%的年增长率，到2025年，全球生物炭市场的价值将达到33亿美元。水体富营养化是由水体中营养盐过量引起的重大环境问题。富营养化的一个常见原因是由于化学肥料的沥滤而被磷酸盐和硝酸盐污染的地下水流出。生物炭可以吸附水中过量的磷酸盐和硝酸盐，留下一个废弃的生物炭，适合用作缓释肥料-既清洁水又去除主要污染源。目前已经进行了多项研究，其中各种化学活化的生物炭已用于从水中去除磷酸盐和硝酸盐，然后用作缓释肥料。虽然目前的研究提供了这一过程可能成功的证据，但该研究是在实验室规模上进行的，主要是在几种不同离子的简单溶液中进行的。使用实验方法和计算模型，该项目将评估目前现有的生物炭活化方法在真实的富营养化水和植物床在SustainableThinkingScotland网站的性能。在此之后，该项目的目标是创建一种新的新型生物炭活化方法，与文献中目前可用的活化方法相比，该方法具有更好的性能。这将允许能够按比例放大用于真实的生活用途的更有效的方法。