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.

垃圾填埋是城市固体废物管理最便宜的选择之一，这种做法已经实施了几个世纪。然而，城市垃圾渗滤液(MLL)的产生具有集中的危险污染物，这是这一过程的最大缺点。MLL处理由于其固有的毒性，与传统处理技术相比具有挑战性，到目前为止，没有一种技术能够在低碳足迹和低能源消耗的情况下提供单级碳和养分去除。例如，在欧洲，MLL大多在城市污水处理厂(UWTP)中管理，采用联合的前处理和能源密集型生物后处理策略，但许多小型UWTP未能遵守氨和新兴污染物的排放限制。这强调了迫切需要制定一种新的分散的单级解决方案。在警报方面，我们建议开发一种基于紫色非硫细菌(PNSB)的集成生物技术，用于现场MLL处理和低碳足迹下的资源回收。PNSB具有多种代谢途径，使它们能够通过光合作用参与自然的营养固定循环。因此，大多数研究利用PNSB作为一种优越的异养菌来处理广泛的废水。到目前为止，一些最近的研究揭示了PNSB作为阴极呼吸细菌从合成介质中以高转化效率获得生物燃料(例如H2)的无限潜力，这还没有被探索用于实际的废水处理，特别是MLL。在这里，我们将从自然来源中分离出混合的PNSB，并通过电化学激活它来诱导所需的代谢反应，并利用它作为自养和异养生物，使用新型的电化学光生物反应器在一个阶段内有效地从MLL中去除/回收营养物质和有机物。该项目是结合了材料科学、生物技术、电化学和代谢工程的跨学科项目，与欧盟2050年的零碳足迹目标保持一致。