Publications by authors named "Xihui Kang"

Microbial chain elongation fermentation is an alternative technology for medium-chain fatty acid (MCFA) production. This paper proposed the addition of pyrochar and graphene in chain elongation to improve MCFA production using ethanol and acetate as substrates. Results showed that the yield of, and selectivity towards, C n-caproate were significantly enhanced with pyrochar addition.

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To overcome the structural complexity and improve the bioconversion efficiency of into bioethanol or/and biomethane, the effects of ensiling pretreatment, NaOH pretreatment, and their combination on digestion performance and mass flow were comparatively investigated. The coproduction of bioethanol and biomethane showed that 65.2 g of ethanol and 102.

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Article Synopsis
  • Researchers examined how different grass to pig manure ratios (50:50 and 75:25) affect the performance and microbial community in co-digestion systems, using a semi-continuous setup with variable organic loading rates (OLRs).
  • At OLRs of 2.0-5.0 g VS/(L·d), both systems showed biogas production, but the 75:25 ratio system failed at an OLR of 5.5 g VS/(L⋅d) due to volatile fatty acid accumulation, while the 50:50 ratio failed at 7.0 g VS/(L⋅d) likely because of mechanical issues.
  • The study highlights the importance of balancing acid-producing
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To enhance the biodegradability and methane production of hybrid Pennisetum, a pretreatment method with high selectivity for lignin removal, namely sodium chlorite/acetic acid (SCA) pretreatment, was examined in this work. Results showed that SCA pretreatment can selectively remove lignin with minimal impact on cellulose and hemicellulose. After up to 200 min of SCA treatment, 79.

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In this study, bioaugmentation with methanogenic propionate-utilizing enrichment was investigated as a method to improve the mono-digestion performance of Pennisetum hybrid in a semi-continuous mode. The effect of bioaugmentation on the microbial community was analyzed as well. The results demonstrate that the steady-state organic loading rate (OLR) of the bioaugmented reactor increased to 4.

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Alkaline pretreatment with NaOH was used to improve methane yield from Pennisetum Hybrid. The pretreatments were carried out with different NaOH solutions (2-8% w/w) at three temperatures (35, 55 and 121 °C) for different periods of time (24, 24 and 1 h). All treated and untreated Pennisetum Hybrid were digested under mesophilic conditions (37 °C) to biogas, significant effects of the pretreatments on the yield of methane were observed.

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