AI Article Synopsis
- - Banana pseudo-stems (BPS) are a low-lignin biomass suitable for methane production, but their high water content and resistant structure pose challenges for effective anaerobic digestion (AD).
- - Squeezing BPS as a pretreatment improved methane production by 41.2% compared to untreated BPS, boosting physical properties that enhance microbial contact during AD.
- - The study found that using squeezed BPS resulted in a faster anaerobic process and yielded an energy surplus of 26.2% after accounting for the energy used in the squeezing process.
Article Abstract
Banana pseudo-stems (BPS) are an abundant and low-lignin-content lignocellulosic biomass for methane production. However, the high-water content in BPS increases the transport costs, and the resistant structure of BPS hinders methane production. In this study, squeezing of BPS as a pretreatment was evaluated for improving anaerobic digestion (AD). After 20-d digestion, methane production from squeezed BPS was 204.2 ± 6.2 mL/(g volatile solids (VS) of feedstock), which was 41.2% more than that from untreated BPS. This increase was mainly attributed to the improvement of physical properties (e.g. water absorbing capacity) and the change in the resistant structure of BPS after squeezing, which promoted good contact between microbes and substrate during AD. The measured methane production was described using a modified Gompertz model and the results showed that anaerobic process would take less time and occur faster when pretreated BPS was used as the substrate. The energy produced during AD of squeezed BPS, after deducting the energy used by the squeezer, resulted in an energy surplus of 26.2%.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.wasman.2019.12.011 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!