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Feng J, Li Y, Strathmann TJ, Guest JS. Characterizing the Opportunity Space for Sustainable Hydrothermal Valorization of Wet Organic Wastes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:2528-2541. [PMID: 38266239 PMCID: PMC10851424 DOI: 10.1021/acs.est.3c07394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/18/2023] [Accepted: 12/26/2023] [Indexed: 01/26/2024]
Abstract
Resource recovery from wet organic wastes can support circular economies by creating financial incentives to produce renewable energy and return nutrients to agriculture. In this study, we characterize the potential for hydrothermal liquefaction (HTL)-based resource recovery systems to advance the economic and environmental sustainability of wastewater sludge, FOG (fats, oils, and grease), food waste, green waste, and animal manure management through the production of liquid biofuels (naphtha, diesel), fertilizers (struvite, ammonium sulfate), and power (heat, electricity). From the waste management perspective, median costs range from -193 $·tonne-1 (FOG) to 251 $·tonne-1 (green waste), and median carbon intensities range from 367 kg CO2 eq·tonne-1 (wastewater sludge) to 769 kg CO2 eq·tonne-1 (green waste). From the fuel production perspective, the minimum selling price of renewable diesel blendstocks are within the commercial diesel price range (2.37 to 5.81 $·gal-1) and have a lower carbon intensity than petroleum diesel (101 kg CO2 eq·MMBTU-1). Finally, through uncertainty analysis and Monte Carlo filtering, we set specific targets (i.e., achieve wastewater sludge-to-biocrude yield >0.440) for the future development of hydrothermal waste management system components. Overall, our work demonstrates the potential of HTL-based resource recovery systems to reduce the costs and carbon intensity of resource-rich organic wastes.
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Affiliation(s)
- Jianan Feng
- Department
of Civil and Environmental Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Yalin Li
- Department
of Civil and Environmental Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - Timothy J. Strathmann
- Department
of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Jeremy S. Guest
- Department
of Civil and Environmental Engineering, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
- Institute
for Sustainability, Energy, and Environment, University of Illinois Urbana−Champaign, Urbana, Illinois 61801, United States
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2
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Blais HN, Schroën K, Tobin J. Concentration of skim milk by forward osmosis using delactosed permeate as an innovative draw solution. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2022.105510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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3
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Singh S, Negi T, Sagar NA, Kumar Y, Tarafdar A, Sirohi R, Sindhu R, Pandey A. Sustainable processes for treatment and management of seafood solid waste. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 817:152951. [PMID: 34999071 DOI: 10.1016/j.scitotenv.2022.152951] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 06/14/2023]
Abstract
Seafood processing is an important economical activity worldwide and is an integral part of the food chain system. However, their processing results in solid waste generation whose disposal and management is a serious concern. Proteins, amino acids, lipids with high amounts of polyunsaturated fatty acids (PUFA), carotenoids, and minerals are abundant in the discards, effluents, and by-catch of seafood processing waste. As a result, it causes nutritional loss and poses major environmental risks. To solve the issues, it is critical that the waste be exposed to secondary processing and valorization for recovery of value added products. Although chemical waste treatment technologies are available, the majority of these procedures have inherent flaws. Biological solutions, on the other hand, are safe, efficacious, and ecologically friendly while maintaining the intrinsic bioactivities after waste conversion. Microbial fermentation or the actions of exogenously introduced enzymes on waste components are used in most bioconversion processes. Algal biotechnology has recently developed unique technologies for biotransformation of nutrients, which may be employed as a feedstock for the recovery of important chemicals as well as biofuel. Bioconversion methods combined with a bio-refinery strategy offer the potential to enable environmentally-friendly and cost-effective seafood waste management. The refinement of these wastes through sustainable bioprocessing interventions can give rise to various circular bioeconomies within the seafood processing sector. Moreover, a techno-economic perspective on the developed solid waste processing lines and its subsequent environmental impact could facilitate commercialization. This review aims to provide a comprehensive view and critical analysis of the recent updates in seafood waste processing in terms of bioconversion processes and byproduct development. Various case studies on circular bioeconomy formulated on seafood processing waste along with techno-economic feasibility for the possible development of sustainable seafood biorefineries have also been discussed.
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Affiliation(s)
- Shikhangi Singh
- Department of Post Harvest Process and Food Engineering, G. B. Pant University of Agriculture and Technology, Pantnagar, -263 145, Uttarakhand, India
| | - Taru Negi
- Department of Food Science and Technology(,) G. B. Pant University of Agriculture and Technology, Pantnagar 263 125, Uttarakhand, India
| | - Narashans Alok Sagar
- Food Microbiology Lab, Division of Livestock Products Technology, ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243 122, Uttar Pradesh, India
| | - Yogesh Kumar
- Department of Food Engineering and Technology, Saint Longwal Institute of Engineering and Technology, Longowal, Punjab, India
| | - Ayon Tarafdar
- Livestock Production and Management Section(,) ICAR-Indian Veterinary Research Institute, Izatnagar, Bareilly 243 122, Uttar Pradesh, India
| | - Ranjna Sirohi
- Department of Chemical & Biological Engineering, Korea University, Seoul 136 713, Republic of Korea; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India.
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute of Interdisciplinary Science and Technology, Trivandrum 695 019, Kerala, India
| | - Ashok Pandey
- Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India; Centre for Innovation and Translational Research, CSIR- Indian Institute for Toxicology Research, Lucknow 226 001, Uttar Pradesh, India; Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India.
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4
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Sar T, Harirchi S, Ramezani M, Bulkan G, Akbas MY, Pandey A, Taherzadeh MJ. Potential utilization of dairy industries by-products and wastes through microbial processes: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 810:152253. [PMID: 34902412 DOI: 10.1016/j.scitotenv.2021.152253] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/18/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
The dairy industry generates excessive amounts of waste and by-products while it gives a wide range of dairy products. Alternative biotechnological uses of these wastes need to be determined to aerobic and anaerobic treatment systems due to their high chemical oxygen demand (COD) levels and rich nutrient (lactose, protein and fat) contents. This work presents a critical review on the fermentation-engineering aspects based on defining the effective use of dairy effluents in the production of various microbial products such as biofuel, enzyme, organic acid, polymer, biomass production, etc. In addition to microbial processes, techno-economic analyses to the integration of some microbial products into the biorefinery and feasibility of the related processes have been presented. Overall, the inclusion of dairy wastes into the designed microbial processes seems also promising for commercial approaches. Especially the digestion of dairy wastes with cow manure and/or different substrates will provide a positive net present value (NPV) and a payback period (PBP) less than 10 years to the plant in terms of biogas production.
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Affiliation(s)
- Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| | - Sharareh Harirchi
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden; Department of Cell and Molecular Biology & Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Mohaddaseh Ramezani
- Microorganisms Bank, Iranian Biological Resource Centre (IBRC), ACECR, Tehran, Iran
| | - Gülru Bulkan
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| | - Meltem Yesilcimen Akbas
- Department of Molecular Biology and Genetics, Gebze Technical University, Gebze-Kocaeli 41400, Turkey
| | - Ashok Pandey
- CSIR-Indian Institute of Toxicology Research, Lucknow, India
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5
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Marzbali MH, Kundu S, Halder P, Patel S, Hakeem IG, Paz-Ferreiro J, Madapusi S, Surapaneni A, Shah K. Wet organic waste treatment via hydrothermal processing: A critical review. CHEMOSPHERE 2021; 279:130557. [PMID: 33894517 DOI: 10.1016/j.chemosphere.2021.130557] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 06/12/2023]
Abstract
There are several recent reviews published in the literature on hydrothermal carbonization, liquefaction and supercritical water gasification of lignocellulosic biomass and algae. The potential of hydrochar, bio-oil or synthesis gas production and applications have also been reviewed individually. The comprehensive review on the hydrothermal treatment of wet wastes (such as municipal solid waste, food waste, sewage sludge, algae) covering carbonization, liquefaction and supercritical water gasification, however, is missing in the literature which formed the basis of the current review paper. The current paper critically reviews the literature around the full spectrum of hydrothermal treatment for wet wastes and establishes a good comparison of the different hydrothermal treatment options for managing wet waste streams. Also, the role of catalysts as well as synthesis of catalysts using hydrothermal treatment of biomass has been critically reviewed. For the first time, efforts have also been made to summarize findings on modelling works as well as techno-economic assessments in the area of hydrothermal treatments of wet wastes. The study concludes with key findings, knowledge gaps and future recommendations to improve the productivity of hydrothermal treatment of wet wastes, helping improve the commercial viability and environmental sustainability.
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Affiliation(s)
- Mojtaba Hedayati Marzbali
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Sazal Kundu
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Pobitra Halder
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Savankumar Patel
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Ibrahim Gbolahan Hakeem
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Jorge Paz-Ferreiro
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Srinivasan Madapusi
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia
| | - Aravind Surapaneni
- South East Water, Frankston, Victoria, 3199, Australia; ARC Training Centre on Advance Transformation of Australia's Biosolids Resources, RMIT University, Bundoora, 3083, Australia
| | - Kalpit Shah
- Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria, 3000, Australia; ARC Training Centre on Advance Transformation of Australia's Biosolids Resources, RMIT University, Bundoora, 3083, Australia.
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6
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Belk AD, Duarte T, Quinn C, Coil DA, Belk KE, Eisen JA, Quinn JC, Martin JN, Yang X, Metcalf JL. Air versus Water Chilling of Chicken: a Pilot Study of Quality, Shelf-Life, Microbial Ecology, and Economics. mSystems 2021; 6:e00912-20. [PMID: 33653941 PMCID: PMC8546986 DOI: 10.1128/msystems.00912-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/29/2021] [Indexed: 01/04/2023] Open
Abstract
The United States' large-scale poultry meat industry is energy and water intensive, and opportunities may exist to improve sustainability during the broiler chilling process. By USDA regulation, after harvest the internal temperature of the chicken must be reduced to 40°F or less within 16 h to inhibit bacterial growth that would otherwise compromise the safety of the product. This step is accomplished most commonly by water immersion chilling in the United States, while air chilling methods dominate other global markets. A comprehensive understanding of the differences between these chilling methods is lacking. Therefore, we assessed the meat quality, shelf-life, microbial ecology, and techno-economic impacts of chilling methods on chicken broilers in a university meat laboratory setting. We discovered that air chilling methods resulted in superior chicken odor and shelf-life, especially prior to 14 days of dark storage. Moreover, we demonstrated that air chilling resulted in a more diverse microbiome that we hypothesize may delay the dominance of the spoilage organism Pseudomonas Finally, a techno-economic analysis highlighted potential economic advantages to air chilling compared to water chilling in facility locations where water costs are a more significant factor than energy costs.IMPORTANCE As the poultry industry works to become more sustainable and to reduce the volume of food waste, it is critical to consider points in the processing system that can be altered to make the process more efficient. In this study, we demonstrate that the method used during chilling (air versus water chilling) influences the final product microbial community, quality, and physiochemistry. Notably, the use of air chilling appears to delay the bloom of Pseudomonas spp. that are the primary spoilers in packaged meat products. By using air chilling to reduce carcass temperatures instead of water chilling, producers may extend the time until spoilage of the products and, depending on the cost of water in the area, may have economic and sustainability advantages. As a next step, a similar experiment should be done in an industrial setting to confirm these results generated in a small-scale university lab facility.
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Affiliation(s)
- Aeriel D Belk
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Toni Duarte
- Department of Animal Science, University of California, Davis, California, USA
| | - Casey Quinn
- Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado, USA
| | - David A Coil
- Genome Center, University of California, Davis, California, USA
| | - Keith E Belk
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Jonathan A Eisen
- Genome Center, University of California, Davis, California, USA
- Department of Evolution and Ecology, University of California, Davis, California, USA
- Department of Medical Microbiology and Immunology, University of California, Davis, Davis, California, USA
| | - Jason C Quinn
- Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado, USA
| | - Jennifer N Martin
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA
| | - Xiang Yang
- Department of Animal Science, University of California, Davis, California, USA
| | - Jessica L Metcalf
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA
- CIFAR Azrieli Global Scholars program, CIFAR, Toronto, Canada
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7
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Khoshnevisan B, Duan N, Tsapekos P, Awasthi MK, Liu Z, Mohammadi A, Angelidaki I, Tsang DCW, Zhang Z, Pan J, Ma L, Aghbashlo M, Tabatabaei M, Liu H. A critical review on livestock manure biorefinery technologies: Sustainability, challenges, and future perspectives. RENEWABLE AND SUSTAINABLE ENERGY REVIEWS 2021; 135:110033. [DOI: 10.1016/j.rser.2020.110033] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
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8
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Caldeira C, Vlysidis A, Fiore G, De Laurentiis V, Vignali G, Sala S. Sustainability of food waste biorefinery: A review on valorisation pathways, techno-economic constraints, and environmental assessment. BIORESOURCE TECHNOLOGY 2020; 312:123575. [PMID: 32521468 DOI: 10.1016/j.biortech.2020.123575] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/19/2020] [Accepted: 05/21/2020] [Indexed: 05/15/2023]
Abstract
The need to increase circularity of industrial systems to address limited resources availability and climate change has triggered the development of the food waste biorefinery concept. However, for the development of future sustainable industrial processes focused on the valorisation of food waste, critical aspects such as (i) the technical feasibility of the processes at industrial scale, (ii) the analysis of their techno-economic potential, including available quantities of waste, and (iii) a life cycle-based environmental assessment of benefits and burdens need to be considered. The goal of this review is to provide an overview of food waste valorisation pathways and to analyse to which extent these aspects have been considered in the literature. Although a plethora of food waste valorisation pathways exist, they are mainly developed at lab-scale. Further research is necessary to assess upscaled performance, feedstock security, and economic and environmental assessment of food waste valorisation processes.
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Affiliation(s)
- Carla Caldeira
- European Commission-Joint Research Centre, Via Enrico Fermi 2749, I-21027 Ispra, VA, Italy
| | - Anestis Vlysidis
- European Commission-Joint Research Centre, Via Enrico Fermi 2749, I-21027 Ispra, VA, Italy
| | - Gianluca Fiore
- European Commission-Joint Research Centre, Via Enrico Fermi 2749, I-21027 Ispra, VA, Italy
| | - Valeria De Laurentiis
- European Commission-Joint Research Centre, Via Enrico Fermi 2749, I-21027 Ispra, VA, Italy
| | - Giuseppe Vignali
- University of Parma, Department of Engineering and Architecture, Viale delle Scienze 181/A, 43124 Parma, Italy
| | - Serenella Sala
- European Commission-Joint Research Centre, Via Enrico Fermi 2749, I-21027 Ispra, VA, Italy.
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9
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Ponnusamy VK, Nagappan S, Bhosale RR, Lay CH, Duc Nguyen D, Pugazhendhi A, Chang SW, Kumar G. Review on sustainable production of biochar through hydrothermal liquefaction: Physico-chemical properties and applications. BIORESOURCE TECHNOLOGY 2020; 310:123414. [PMID: 32354676 DOI: 10.1016/j.biortech.2020.123414] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 05/22/2023]
Abstract
This review examines in detail the production and characteristics of biochar resulting from hydrothermal liquefaction. Specifically, the impact of feedstocks and different process parameters on the properties and yield of biochar by hydrothermal liquefaction has been thoroughly studied. Hydrothermal liquefaction derived biochars, relative to biochars from high-temperature thermochemical processes retain critical functional groups during carbonization and are therefore promising for a wide range of applications. Most of the review's efforts are to study possible hydrothermal liquefaction biochar applications in various fields, including fuel, metal and dye adsorption, pollutant reduction, animal feed, and biogas catalyst. The feasibility of biochar through the hydrothermal liquefaction process has been analysed via life-cycle assessment and energy evaluation. The article concludes with a brief discussion on possible issues and strategies for the sustainable development of hydrothermal liquefaction-based biochar.
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Affiliation(s)
- Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry & Research Center for Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City 807 Taiwan
| | - Senthil Nagappan
- Department of Biotechnology, Sri Venkateswara College of Engineering, Sriperumpudur, Tamil Nadu, India
| | - Rahul R Bhosale
- Department of Chemical Engineering, Qatar University, PO Box-2713, Doha, Qatar
| | - Chyi-How Lay
- Master's Program of Green Energy Sciecne and Technology, Feng Chia University, Taichung, Taiwan
| | - Dinh Duc Nguyen
- Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam
| | - Soon Woong Chang
- Department of Environmental Energy Engineering, Kyonggi University, Suwon, Republic of Korea
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
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10
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Environmental performances of diluents and hydrogen production pathways from microalgae in cold climates: Open raceway ponds and photobioreactors coupled with thermochemical conversion. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101815] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Gu Y, Zhang X, Deal B, Han L. Biological systems for treatment and valorization of wastewater generated from hydrothermal liquefaction of biomass and systems thinking: A review. BIORESOURCE TECHNOLOGY 2019; 278:329-345. [PMID: 30723025 DOI: 10.1016/j.biortech.2019.01.127] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 01/24/2019] [Accepted: 01/26/2019] [Indexed: 06/09/2023]
Abstract
Hydrothermal liquefaction (HTL) is one of the most promising platforms to valorize diverse biomass. Yet, a large amount of wastewater is produced containing a large amount of recalcitrant substances. Valorization of the refractory wastewater by biological systems to recapture organic matter and nutrients is not only clearly beneficial for the environment but also good for energy recovery. To this end, this study reviews the valorization of HTL wastewater via biological systems from many points of view, starting with the brief characterization of wastewater derived from HTL of diverse biomass. The fundamentals, pros and cons, and the most recent outcomes of numerous biological systems are comprehensively demonstrated with emphasis on their combinations. We then use a systems-thinking concept to shed light on a procedural model exhibiting a new perspective to consolidate the utilization of these systems. Finally, this review elucidates the future perspectives of HTL wastewater valorization.
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Affiliation(s)
- Yexuan Gu
- Department of Landscape Architecture, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Xuesong Zhang
- Illinois Sustainable Technology Center, University of Illinois at Urbana-Champaign, 1 Hazelwood Drive, Champaign, IL 61820, USA; Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China.
| | - Brian Deal
- Department of Landscape Architecture, University of Illinois at Urbana-Champaign, Champaign, IL 61820, USA
| | - Lujia Han
- Laboratory of Biomass and Bioprocessing Engineering, College of Engineering, China Agricultural University, Beijing 100083, China
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12
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Bai S, Zhao X, Wang D, Zhang X, Ren N. Engaging multiple weighting approaches and Conjoint Analysis to extend results acceptance of life cycle assessment in biological wastewater treatment technologies. BIORESOURCE TECHNOLOGY 2018; 265:349-356. [PMID: 29920444 DOI: 10.1016/j.biortech.2018.06.032] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/10/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Environmental impacts of biological wastewater treatment technologies (BWTTs) can be evaluated by life cycle assessment (LCA). However, very few efforts have been made to expand the ranges of results acceptance and promote stakeholders to participate in the results analysis. To facilitate the evaluation reaching more wide and deep understanding, this study proposed to employ multiple weighting methods and the Conjoint Analysis. To investigate the feasibility, an illustrative case of a bioaugmented constructed wetland was carried out. Weighting results indicated that appropriate improvement strategies could be obtained from synthesizing the similarities and differences of LCA results due to different weighting methods employed. Meanwhile, application of Conjoint Analysis was conducive to the communication between LCA practitioners and BWTTs stakeholders. In a simulated decision-situation, this study found that the decision-making process of stakeholders could be clearly derived to indicate how stakeholders would take trade-offs and make choices based on analyzing LCA outcome.
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Affiliation(s)
- Shunwen Bai
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xinyue Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; Section of Sanitary Engineering, Department of Water Management, Delft University of Technology, Delft 2628CN, The Netherlands
| | - Dawei Wang
- Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, 800 E Leigh St, VA23225 Richmond, USA
| | - Xuedong Zhang
- Section of Sanitary Engineering, Department of Water Management, Delft University of Technology, Delft 2628CN, The Netherlands
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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13
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Managing variability in algal biomass production through drying and stabilization of feedstock blends. ALGAL RES 2017. [DOI: 10.1016/j.algal.2017.03.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Barlow J, Sims RC, Quinn JC. Techno-economic and life-cycle assessment of an attached growth algal biorefinery. BIORESOURCE TECHNOLOGY 2016; 220:360-368. [PMID: 27595701 DOI: 10.1016/j.biortech.2016.08.091] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 08/23/2016] [Accepted: 08/24/2016] [Indexed: 06/06/2023]
Abstract
This study examined the sustainability of generating renewable diesel via hydrothermal liquefaction (HTL) of biomass from a rotating algal biofilm reactor. Pilot-scale growth studies and laboratory-scale HTL experiments were used to validate an engineering system model. The engineering system model served as the foundation to evaluate the economic feasibility and environmental impact of the system at full scale. Techno-economic results indicate that biomass feedstock costs dominated the minimum fuel selling price (MFSP), with a base case of $104.31per gallon. Life-cycle assessment results show a base-case global warming potential (GWP) of 80gCO2-eMJ(-1) and net energy ratio (NER) of 1.65 based on a well-to-product system boundary. Optimization of the system reduces MFSP, GWP and NER to $11.90Gal(-1), -44gCO2-eMJ(-1), and 0.33, respectively. The systems-level impacts of integrating algae cultivation with wastewater treatment were found to significantly reduce environmental impact. Sensitivity analysis showed that algal productivity most significantly affected fuel selling price, emphasizing the importance of optimizing biomass productivity.
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Affiliation(s)
- Jay Barlow
- Biological Engineering, 4130 Old Main Hill, Utah State University, Logan, UT 84322, USA
| | - Ronald C Sims
- Biological Engineering, 4130 Old Main Hill, Utah State University, Logan, UT 84322, USA
| | - Jason C Quinn
- Mechanical & Aerospace Engineering, 4130 Old Main Hill, Logan, UT 84322-4130, USA.
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15
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Jena U, McCurdy AT, Warren A, Summers H, Ledbetter RN, Hoekman SK, Seefeldt LC, Quinn JC. Oleaginous yeast platform for producing biofuels via co-solvent hydrothermal liquefaction. BIOTECHNOLOGY FOR BIOFUELS 2015; 8:167. [PMID: 26468320 PMCID: PMC4605089 DOI: 10.1186/s13068-015-0345-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Oleaginous microorganisms are attractive feedstock for production of liquid biofuels. Direct hydrothermal liquefaction (HTL) is an efficient route that converts whole, wet biomass into an energy-dense liquid fuel precursor, called 'biocrude'. HTL represents a promising alternative to conventional lipid extraction methods as it does not require a dry feedstock or additional steps for lipid extraction. However, high operating pressure in HTL can pose challenges in reactor sizing and overall operating costs. Through the use of co-solvents the HTL operating pressure can be reduced. The present study investigates low-temperature co-solvent HTL of oleaginous yeast, Cryptococcus curvatus, using laboratory batch reactors. RESULTS In this study, we report the co-solvent HTL of microbial yeast biomass in an isopropanol-water binary system in the presence or absence of Na2CO3 catalyst. This novel approach proved to be effective and resulted in significantly higher yield of biocrude (56.4 ± 0.1 %) than that of HTL performed without a co-solvent (49.1 ± 0.4 %)(p = 0.001). Addition of Na2CO3 as a catalyst marginally improved the biocrude yield. The energy content of the resulting biocrude (~37 MJ kg(-1)) was only slightly lower than that of petroleum crude (42 MJ kg(-1)). The HTL process was successful in removing carboxyl groups from fatty acids and creating their associated straight-chain alkanes (C17-C21). Experimental results were leveraged to inform techno-economic analysis (TEA) of the baseline HTL conversion pathway to evaluate the commercial feasibility of this process. TEA results showed a renewable diesel fuel price of $5.09 per gallon, with the HTL-processing step accounting for approximately 23 % of the total cost for the baseline pathway. CONCLUSIONS This study shows the feasibility of co-solvent HTL of oleaginous yeast biomass in producing an energy-dense biocrude, and hence provides a platform for adding value to the current dairy industry. Co-solvents can be used to lower the HTL temperature and hence the operating pressure. This process results in a higher biocrude yield at a lower HTL temperature. A conceptual yeast HTL biofuel platform suggests the use of a dairy waste stream for increasing the productivity and sustainability of rural areas while providing a new feedstock (yeast) for generating biofuels.
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