Patil Pankaj N, Gogate Parag R, Csoka Levente, Dregelyi-Kiss Agota, Horvath Miklos
Department of Chemical Engineering, Institute of Chemical Technology, Mumbai 400 019, India.
University of West Hungary, Institute of Wood Based Products and Technologies, 9400 Sopron, Hungary.
Ultrason Sonochem. 2016 May;30:79-86. doi: 10.1016/j.ultsonch.2015.11.009. Epub 2015 Nov 7.
The present work investigates the application of hydrodynamic cavitation (HC) for the pretreatment of wheat straw with an objective of enhancing the biogas production. The hydrodynamic cavitation reactor is based on a stator and rotor assembly. The effect of three different speeds of rotor (2300, 2500, 2700 rpm), wheat straw to water ratios (0.5%, 1% and 1.5% wt/wt) and also treatment times as 2, 4 and 6 min have been investigated in the work using the design of experiments (DOE) approach. It was observed that the methane yield of 31.8 ml was obtained with untreated wheat straw whereas 77.9 ml was obtained with HC pre-treated wheat straw confirming the favourable changes during the pre-treatment. The combined pre-treatment using KOH and HC gave maximum yield of biogas as 172.3 ml. Overall, it has been established that significant enhancement in the biogas production can be obtained due to the pretreatment using HC which can also be further intensified by combination with chemical treatment.
本研究探讨了水力空化（HC）在小麦秸秆预处理中的应用，目的是提高沼气产量。水力空化反应器基于定子和转子组件。本研究采用实验设计（DOE）方法，研究了三种不同的转子速度（2300、2500、2700转/分钟）、小麦秸秆与水的比例（0.5%、1%和1.5%重量/重量）以及处理时间（2、4和6分钟）的影响。观察到未经处理的小麦秸秆甲烷产量为31.8毫升，而经HC预处理的小麦秸秆甲烷产量为77.9毫升，这证实了预处理过程中发生的有利变化。使用KOH和HC进行联合预处理可使沼气产量最高达到172.3毫升。总体而言，已经确定，通过使用HC进行预处理可以显著提高沼气产量，并且通过与化学处理相结合还可以进一步提高产量。
