Advanced Landfill Waste Alleviation and Resource Mining Strategies

先进的垃圾填埋场废物缓解和资源开采策略

• 批准号: EP/X027058/1
• 负责人: MD TABISH NOORI MD TABISH NOORI
• 金额: $ 26万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FX027058%2F1
• 关键词: Advanced; Landfill; Waste; Alleviation; Resource

Landfilling is one of the cheapest options for municipal solid waste management, which has been in practice for centuries. However, generation of municipal landfill leachate (MLL) with concentrated hazardous pollutants is the biggest downside of this process. MLL treatment is challenging with conventional treatment technologies due to its intrinsic toxicity and to date, none of the technology can provide a single-stage carbon and nutrient removal at a low carbon footprint and energy expenditure. For instance, in Europe, MLL is mostly managed in urban wastewater treatment plants (UWTPs) using combined pre-treatment and energy-intensive post-biological strategies yet many small UWTPs fail to comply with the discharge limit of ammonia and emerging pollutants. This is emphasizing an urgent need to develop a new decentralized single-stage solution. In ALARMS, we propose to develop an integrated purple non-sulfur bacteria (PNSB)-based biotechnology for onsite MLL treatment and resource recovery at low-carbon footprint. PNSB own versatile metabolic pathways, enabling them to participate in the natural nutrients fixation cycle using photosynthesis process. Thus, most of the studies utilized PNSB as a superior heterotroph to treat a wide range of wastewater. To date, a few recent research uncovered unlimited potential of PNSB as cathode respiring bacteria to derive biofuels (e.g., H2) at high conversion efficiency from synthetic media, which is yet to be explored for real wastewater treatment, especially for MLL. Here, we will isolate mixed PNSB from natural sources and electrochemically activate it to induce a desired metabolic response and utilize it as both autotroph and heterotroph to efficiently remove/recover nutrients and organics in a single stage from MLL using novel electrochemical photobioreactors. This project is interdisciplinary combining material science, biotechnology, electrochemistry, and metabolic engineering, and is aligned with the EU's 2050 goal of zero carbon footprint.

垃圾填埋是市政固体废物管理的最便宜的选择之一，它已经实践了几个世纪。但是，具有浓缩危险污染物的市政垃圾填埋场（MLL）是此过程的最大缺点。由于其固有的毒性，MLL治疗的常规治疗技术具有挑战性，迄今为止，该技术都无法在低碳足迹和能量消耗的情况下提供单阶段的碳和营养。例如，在欧洲，MLL主要在城市废水处理厂（UWTPS）进行管理，并使用合并的预处理和能量密集型生物学后策略来管理，但许多小型UWTP无法遵守氨和新兴污染物的排放限制。这强调迫切需要开发新的分散单阶段解决方案。在警报中，我们建议开发一种基于低碳足迹的现场MLL治疗和资源回收的基于基于紫色的非硫细菌（PNSB）的生物技术。 PNSB自己的多功能代谢途径，使它们能够使用光合作用过程参与天然营养固定周期。因此，大多数研究都利用PNSB作为一种优质的异育来处理广泛的废水。迄今为止，最近的一些研究发现了PNSB作为阴极呼吸细菌的无限潜力，以从合成介质的高转化效率下得出生物燃料（例如H2），这对于实际废水处理尚未探索，尤其是MLL。在这里，我们将将混合PNSB与自然来源分离，并在电化学上激活它以诱导所需的代谢反应，并将其用作自身养育和异育养殖，以有效地从MLL中使用新型的电化学光生反应器从MLL中有效地清除/恢复营养和有机物。该项目是跨学科结合材料科学，生物技术，电化学和代谢工程，并与欧盟2050年的零碳足迹目标保持一致。