Hydrothermal Liquefaction (HTL) is a thermochemical process that uses high heat and pressure to convert various biowastes into renewable biocrude oil, simultaneously both generating a metal and phosphorus rich solid phase and a nutrient rich, toxic aqueous phase. Given the promise of this technology that has achieved as much as 80% biocrude recovery, researchers have also investigated the advantages and limitations of reusing these byproducts in other applications, such as asphalt binder, adsorbents, fertilizer, and recyclable process water, etc. However, given the differences between feedstocks including manure, cornstock, algae, food waste, among others, there are considerable gaps in understanding how to best resuse the materials and the expected characteristics as a result of several reaction parameters. Thus, this work aims to elucidate the mechanisms by which some compounds are concentrated in different phases through their characterization after HTL of different types of food waste, grouped into lipid-rich, protein-rich, and carbohydrate-rich feedstocks, all collected from the campus dining hall washroom. These 8 types of food waste HTL processes were optimized for oil yield and products analyzed considering temperature and time across a range of 280-340C and 10-60min. The analysis and discussion of this work reviews considerations for subsequent anaerobic digestion and algae cultivation with respect to the nutrients and inhibitory contents of the Post Hydrothermal Liquefaction Wastewater (PHW).

Analysis of nutrient distribution and aqueous phase from hydrothermal liquefaction (HTL) of individual food waste components for subsequent bioremediation

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.