| Title | A perspective on the combination of alkali pre-treatment with bioaugmentation to improve biogas production from lignocellulose biomass |
|---|---|
| ID_Doc | 29072 |
| Authors | Donkor, KO; Gottumukkala, LD; Lin, RC; Murphy, JD |
| Title | A perspective on the combination of alkali pre-treatment with bioaugmentation to improve biogas production from lignocellulose biomass |
| Year | 2022 |
| Published | |
| Abstract | Anaerobic digestion (AD) is a bioprocess technology that integrates into circular economy systems, which produce renewable energy and biofertilizer whilst reducing greenhouse gas emissions. However, improvements in biogas production efficiency are needed in dealing with lignocellulosic biomass. The state-of-the-art of AD technology is discussed, with emphasis on feedstock digestibility and operational difficulty. Solutions to these challenges including for pre-treatment and bioaugmentation are reviewed. This article proposes an innovative integrated system combining alkali pre-treatment, temperature-phased AD and bioaugmentation techniques. The integrated system as modelled has a targeted potential to achieve a biodegradability index of 90% while increasing methane production by 47% compared to conventional AD. The methane productivity may also be improved by a target reduction in retention time from 30 to 20 days. This, if realized has the potential to lower energy production cost and the levelized cost of abatement to facilitate an increased resource of sustainable commercially viable biomethane. |
| https://doi.org/10.1016/j.biortech.2022.126950 |
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