嗜热（55°C）微需氧预处理玉米秸秆用于厌氧消化。
The thermophilic (55°C) microaerobic pretreatment of corn straw for anaerobic digestion.
机构信息
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong Province 266101, PR China.
出版信息
Bioresour Technol. 2015 Jan;175:203-8. doi: 10.1016/j.biortech.2014.10.072. Epub 2014 Oct 22.
Microaerobic process has been proven to be an alternative pretreatment for the anaerobic digestion (AD) process in several studies. In this study, the effect of thermophilic microaerobic pretreatment (TMP) on the AD of corn straw was investigated. Results indicated that TMP process obviously improved the methane yield. The maximum methane yield was obtained at the oxygen loads of 5ml/g VSsubstrate, which was 16.24% higher than that of untreated group. The modified first order equation analysis showed the TMP process not only accelerated the hydrolysis rates but also reduced the lag-phase time of AD process. The structural characterization analysis showed cellulosic structures of corn straw were partly disrupted during TMP process. The crystallinity indexes were also decreased. In addition, large or destroyed pores and substantial structural disruption were observed after pretreatment. The results showed that TMP is an efficient pretreatment method for the AD of corn straw.
在多项研究中，微需氧处理已被证明是替代厌氧消化（AD）过程的预处理方法。本研究考察了高温微需氧预处理（TMP）对玉米秸秆 AD 的影响。结果表明，TMP 过程明显提高了甲烷产量。在 5ml/gVS 基质的氧负荷下，获得了最大的甲烷产量，比未处理组高 16.24%。修正的一级动力学方程分析表明，TMP 过程不仅加速了水解速率，而且缩短了 AD 过程的迟滞期。结构特征分析表明，在 TMP 过程中，玉米秸秆的纤维素结构部分被破坏。结晶度指数也降低了。此外，预处理后观察到大孔或破坏的孔和大量结构破坏。结果表明，TMP 是玉米秸秆 AD 的一种有效预处理方法。
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