Industrial development owes its pace to the continued supply of energy; however, this development is also associated with a consequent consumption of water, climate change and environmental degradation. The increased concentration of carbon in the atmosphere and the dwindling clean water resources are posing another potent challenge to the sustained industrial development. The intermittent nature of the renewable energy resources particularly wind and solar energy make their storage difficult. Power-to-gas is perceived to solve this issue of storage of renewable energy through the production of synthetic natural gas. Production of economically viable hydrogen gas and carbon collection and utilization (CCU) are two energy-intensive processes that are essential for the Sabatier reaction in the scheme of power-to-gas. This study proposes a novel model that employs low energy consuming microbial electrolysis cell along with carbon collectors for the production of synthetic natural gas through the Sabatier reaction. Renewable energy resources are proposed to power the MEC as well as the carbon collectors. The model uses the wastewater stream as input to the MEC ultimately delivering hydrogen to the Sabatier reactor. A successful model would be able to treat the wastewater, generate energy in the form of SNG, mitigate climate change and contribute to the achievement of Sustainable Development Goals (SDG 6, 7, 12, 13 & 14).

中文翻译：

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微生物电解槽和电转气技术——一种新型的现场工业废水处理和 CCU 布置

工业发展的步伐归功于能源的持续供应；然而，这种发展也与随之而来的水消耗、气候变化和环境退化有关。大气中碳浓度的增加和清洁水资源的减少对持续的工业发展构成了另一个强有力的挑战。可再生能源特别是风能和太阳能的间歇性使得它们的储存变得困难。电转气被认为可以通过生产合成天然气来解决可再生能源的存储问题。经济可行的氢气生产和碳收集与利用 (CCU) 是两种能源密集型过程，对于电转气方案中的 Sabatier 反应至关重要。本研究提出了一种新模型，该模型采用低能耗微生物电解槽和碳收集器，通过 Sabatier 反应生产合成天然气。建议使用可再生能源为 MEC 和碳收集器供电。该模型使用废水流作为 MEC 的输入，最终将氢气输送到 Sabatier 反应器。一个成功的模式将能够处理废水、以 SNG 的形式产生能源、缓解气候变化并有助于实现可持续发展目标（SDG 6、7、12、13 和 14）。建议使用可再生能源为 MEC 和碳收集器供电。该模型使用废水流作为 MEC 的输入，最终将氢气输送到 Sabatier 反应器。一个成功的模式将能够处理废水、以 SNG 的形式产生能源、缓解气候变化并有助于实现可持续发展目标（SDG 6、7、12、13 和 14）。建议使用可再生能源为 MEC 和碳收集器供电。该模型使用废水流作为 MEC 的输入，最终将氢气输送到 Sabatier 反应器。一个成功的模式将能够处理废水、以 SNG 的形式产生能源、缓解气候变化并有助于实现可持续发展目标（SDG 6、7、12、13 和 14）。