Enhancing the Methane Generation from Food Waste Anaerobic Digestion Mediated by Fluidic Oscillator Generated Microbubbles

流体振荡器产生的微气泡介导的食物垃圾厌氧消化增强甲烷生成

• 批准号: 132708
• 金额: $ 17.8万
• 依托单位: PERLEMAX LIMITED
• 依托单位国家: 英国
• 项目类别: Feasibility Studies
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=132708
• 关键词: Enhancing; Methane; Generation; Food; Waste

As a society, we are wasting a lot of food with global food wastage estimated at 2 billion tonnes p.a. Growing population and the growth of the middle class is only going to increase this problem. That which cannot be repurposed as animal feed is mitigated using appropriate waste treatment facilities. One of these strategies is to use an airtight container to let microbes degrade this waste into biogas(predominantly a mixture ofmethane(CH4)+CarbonDioxide(CO2) and other gases in minor amounts) and manure in an oxygen free environment in a process known as anaerobic digestion(AD). This process is relatively clean, generates biogas which can be used for energy generation and reduces the greenhouse gas emissions due to uncontrolled release of methane in the landfill.Our proposed solution enhances this process by periodic sparging of CO2 microbubbles in order to increase the CH4 yield by 110%. It is also planned to sweeten (separate CO2) the biogas released by mineral carbonation mediated by microbubbles. Increase of process efficiencies via total process integration at site is another objective making this project an inherently sustainable energy solution.

作为一个社会，我们正在浪费大量的食物，全球每年浪费的食物估计有20亿吨。人口增长和中产阶级的增长只会加剧这个问题。无法重新用作动物饲料的物质可使用适当的废物处理设施来缓解。这些策略之一是使用一个密闭容器，让微生物在无氧环境中将这些废物降解为沼气（主要是甲烷（CH 4）+二氧化碳（CO 2）和少量其他气体的混合物）和粪便，该过程称为厌氧消化（AD）。这个过程是相对清洁的，产生的沼气可用于发电，并减少温室气体排放，由于甲烷在垃圾填埋场的不受控制的释放。我们提出的解决方案增强了这一过程，定期喷射二氧化碳微泡，以提高甲烷产量的110%。还计划通过微泡介导的矿物碳酸化来使释放的沼气变甜（分离CO2）。通过现场的整体工艺集成提高工艺效率是使该项目成为内在可持续能源解决方案的另一个目标。