Anaerobic digestion of process water from hydrothermal treatment processes: a 
review of inhibitors and detoxification approaches

Zhou, M; Taiwo, K; Wang, H; Ntihuga, J-N; Angenent, LT; Usack, JG

doi:10.1186/s40643-024-00756-6

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Anaerobic digestion of process water from hydrothermal treatment processes: a review of inhibitors and detoxification approaches

MPS-Authors

/persons/resource/persons271750

Angenent, LT
Research Group Environmental Biotechnology, Max Planck Institute for Biology Tübingen, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Zhou, M., Taiwo, K., Wang, H., Ntihuga, J.-N., Angenent, L., & Usack, J. (2024). Anaerobic digestion of process water from hydrothermal treatment processes: a review of inhibitors and detoxification approaches. Bioresources and Bioprocessing, 11(1):. doi:10.1186/s40643-024-00756-6.

引用: https://hdl.handle.net/21.11116/0000-000F-4284-1

要旨

Integrating hydrothermal treatment processes and anaerobic digestion (AD) is promising for maximizing resource recovery from biomass and organic waste. The process water generated during hydrothermal treatment contains high concentrations of organic matter, which can be converted into biogas using AD. However, process water also contains various compounds that inhibit the AD process. Fingerprinting these inhibitors and identifying suitable mitigation strategies and detoxification methods is necessary to optimize the integration of these two technologies. By examining the existing literature, we were able to: (1) compare the methane yields and organics removal efficiency during AD of various hydrothermal treatment process water; (2) catalog the main AD inhibitors found in hydrothermal treatment process water; (3) identify recalcitrant components limiting AD performance; and (4) evaluate approaches to detoxify specific inhibitors and degrade recalcitrant components. Common inhibitors in process water are organic acids (at high concentrations), total ammonia nitrogen (TAN), oxygenated organics, and N-heterocyclic compounds. Feedstock composition is the primary determinant of organic acid and TAN formation (carbohydrates-rich and protein-rich feedstocks, respectively). In contrast, processing conditions (e.g., temperature, pressure, reaction duration) influence the formation extent of oxygenated organics and N-heterocyclic compounds. Struvite precipitation and zeolite adsorption are the most widely used approaches to eliminate TAN inhibition. In contrast, powdered and granular activated carbon and ozonation are the preferred methods to remove toxic substances before AD treatment. Currently, ozonation is the most effective approach to reduce the toxicity and recalcitrance of N and O-heterocyclic compounds during AD. Microaeration methods, which disrupt the AD microbiome less than ozone, might be more practical for nitrifying TAN and degrading recalcitrant compounds, but further research in this area is necessary.