Journal article
Coupling hydrothermal liquefaction and membrane distillation to treat anaerobic digestate from food and dairy farm waste
Bioresource technology, v 267, pp 408-415
01 Nov 2018
PMID: 30032054
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
[Display omitted]
•Hydrothermal liquefaction is used to convert food and dairy waste into biocrude oil.•Membrane distillation can be driven by residual heat from the hydrothermal system.•Membrane distillation is used to treat hydrothermal liquefaction effluent.•Membrane distillation achieved water recovery of 75% without experiencing wetting.•Membrane distillation retentate can be used as high-strength phosphate fertilizer.
Increased demand for water, energy and food requires new ways to produce fertilizers, fuels and reusable water. Recovery of resources from wastes could lead to an additional source of energy and nutrients, and also reduce the waste to be disposed. In this work, we used hydrothermal liquefaction to produce a biocrude oil product, followed by membrane distillation of the aqueous effluents to concentrate a nutrient-rich stream that can be used as fertilizer. The motivation for this work is that residual heat from the hydrothermal liquefaction process could be utilized to drive the membrane distillation process, which would improve the efficiency and reduce the cost of the distillation process. The membrane distillation system was demonstrated to be able to recover 75% of the water. The membrane distillation retentate had very high ammonium and phosphate concentrations, making it suitable as a fertilizer. Membrane permeate contained high concentrations of volatile organics.
Metrics
Details
- Title
- Coupling hydrothermal liquefaction and membrane distillation to treat anaerobic digestate from food and dairy farm waste
- Creators
- Unnati Rao - Department of Civil and Environmental Engineering, University of California, Los Angeles, CA, United StatesRoy Posmanik - Agricultural Research OrganizationLindsay E. Hatch - University of California, RiversideJefferson W. Tester - Cornell UniversitySharon L. Walker - University of California, RiversideKelley C. Barsanti - University of California, RiversideDavid Jassby - University of California, Los Angeles
- Publication Details
- Bioresource technology, v 267, pp 408-415
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- College of Engineering
- Web of Science ID
- WOS:000441876100051
- Scopus ID
- 2-s2.0-85050075567
- Other Identifier
- 991021229888704721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Agricultural Engineering
- Biotechnology & Applied Microbiology
- Energy & Fuels