Biogas production

This study examined the chemical compositions and the anaerobic degradability of the hydrothermal liquefaction wastewater (HTLWW) of rice straw biomass. To verify the stability of degradability and to analyze changes in microbial community structure, two semi continuous reaction were also conducted with PE aqueous (PE-HTLWW) and raw aqueous (R-WW). Methane production differences were explained by using GC-MS, HPLC, FTIR and LC-MS technologies. Besides, high-through sequencing of full-length 16S rRNA genes was used to reveal the microbial communities responsible for the degradations in HTLWW. PE extraction of HTLWW did not have obvious effects on the microbial community richness.

本研究考察了稻草生物质水热液化废水（hydrothermal liquefaction wastewater，HTLWW）的化学组成与厌氧降解性能。为验证降解性能的稳定性并解析微生物群落结构的变化，本研究还分别以聚乙烯水相产物（PE-HTLWW）与原水相（R-WW）为底物开展了两组半连续反应实验。本研究通过气相色谱-质谱联用仪（Gas Chromatography-Mass Spectrometry，GC-MS）、高效液相色谱（High Performance Liquid Chromatography，HPLC）、傅里叶变换红外光谱（Fourier Transform Infrared Spectroscopy，FTIR）以及液相色谱-质谱联用仪（Liquid Chromatography-Mass Spectrometry，LC-MS）等技术阐释了产甲烷能力的差异。此外，本研究采用全长16S rRNA基因高通量测序技术，揭示了参与HTLWW降解过程的核心微生物群落。对HTLWW进行聚乙烯萃取处理并未对其微生物群落丰富度产生显著影响。