采用电势能跃脱附（EPSD）原位再生活性炭去除沼气中的 HS。
In-situ regeneration of activated carbon with electric potential swing desorption (EPSD) for the HS removal from biogas.
机构信息
Institute of Mechanical, Process & Energy Engineering, Heriot-Watt University, UK; Department of Mechanical Engineering, University of Engineering & Technology Lahore, KSK Campus, Pakistan; Research Centre for Carbon Solutions, Heriot-Watt University, UK.
Institute of Mechanical, Process & Energy Engineering, Heriot-Watt University, UK; Research Centre for Carbon Solutions, Heriot-Watt University, UK.
出版信息
Bioresour Technol. 2018 Feb;249:125-131. doi: 10.1016/j.biortech.2017.09.198. Epub 2017 Oct 4.
In-situ regeneration of a granular activated carbon was conducted for the first time using electric potential swing desorption (EPSD) with potentials up to 30 V. The EPSD system was compared against a standard non-potential system using a fixed-bed reactor with a bed of 10 g of activated carbon treating a gas mixture with 10,000 ppm HS. Breakthrough times, adsorption desorption volume, capacities, effect of regeneration and desorption kinetics were investigated. The analysis showed that desorption of HS using the new EPSD system was 3 times quicker compared with the no potential system. Hence, physical adsorption using EPSD over activated carbon is efficient, safe and environmental friendly and could be used for the in-situ regeneration of granular activated carbon without using a PSA and/or TSA system. Additionally, adsorption and desorption cycles can be obtained with a classical two column system, which could lead towards a more efficient and economic biogas to biomethane process.
首次使用电位跃变解吸（EPSD）在高达 30 V 的电势下对颗粒活性炭进行原位再生。将 EPSD 系统与使用固定床反应器的标准非电势系统进行了比较，该固定床反应器中的活性炭床层为 10 g，处理 10000 ppm HS 的混合气体。考察了穿透时间、吸附解吸体积、容量、再生效果和动力学解吸。结果表明，与无电势系统相比，新的 EPSD 系统中 HS 的解吸速度快 3 倍。因此，使用 EPSD 对活性炭进行物理吸附是高效、安全和环保的，可用于颗粒活性炭的原位再生，而无需使用 PSA 和/或 TSA 系统。此外，可通过经典的双塔系统获得吸附和解吸循环，这可能会使沼气制生物甲烷过程更加高效和经济。
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