在分批进料试验中，氧化石墨烯提高了甲烷的生产动力学。
Enhanced methane production kinetics by graphene oxide in fed-batch tests.
机构信息
Catalan Institute for Water Research (ICRA), Emili Grahit 101, Girona 17003, Spain; University of Girona, Girona 17003, Spain; Chair of Urban Water Systems Engineering, Technical University of Munich, Am Coulombwall 3, Garching 85748, Germany.
Catalan Institute for Water Research (ICRA), Emili Grahit 101, Girona 17003, Spain; Catalan Institution for Research and Advanced Studies (ICREA), Passeig Lluís Companys 23, Barcelona 08010, Spain.
出版信息
Bioresour Technol. 2022 Sep;360:127642. doi: 10.1016/j.biortech.2022.127642. Epub 2022 Jul 18.
The study aims to prove that the addition of graphene oxide (GO) improves anaerobic digestion (AD) kinetic performance. Classical batch tests were modified to a fed-batch strategy at four GO levels while using two substrates (glucose and microcrystalline cellulose (MCC)). First-order and modified Gompertz models were respectively applied to evaluate the kinetic performance. The results showed significantly (p < 0.05) improved kinetic from the third refeeding step for both substrates. 20 mg GO per g of volatile solids (VS) led to an increase of up to 210% for the first-order rate constant (k) and up to 120% for maximum biochemical methane potential (BMP) rate (R) compared to control for glucose and MCC, respectively. The findings of this work suggest the implementation of GO in continuously operated systems to accelerate the AD process.
本研究旨在证明氧化石墨烯（GO）的添加可以改善厌氧消化（AD）的动力学性能。通过将两种底物（葡萄糖和微晶纤维素（MCC））分别在四个 GO 水平下，从经典的分批试验修改为分批进料策略。分别采用一级和修正的 Gompertz 模型来评估动力学性能。结果表明，两种底物在第三次补料时，动力学性能均显著（p < 0.05）提高。与对照相比，每克挥发性固体（VS）添加 20 毫克 GO 分别使葡萄糖和 MCC 的一级速率常数（k）提高了高达 210%，最大生物甲烷潜力（BMP）速率（R）提高了高达 120%。这项工作的结果表明，在连续运行系统中实施 GO 可以加速 AD 过程。
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