Power-to-chemicals: sustainable liquefaction of food waste with plasma-electrolysis

Abstract

The increasing amount of food waste from various industrial, agricultural, and household sources is an environmental burden if managed inappropriately. Numerous waste management approaches have been developed for the disposal of food waste, but still suffer from either high cost, production of toxic by-products, or secondary environmental pollutions. Herein, we report a new and sustainable plasma electrolysis biorefinery route for the rapid and efficient liquefaction of food waste. During the plasma electrolysis process, only the solvent is added to liquefy the waste, and anions in the waste can contribute to catalyzing the biowaste conversion. While liquefying the waste, the highly reactive species produced in the plasma electrolysis process can efficiently reduce the content of O, N, and Cl in the liquefied products and oxidize most of the metals into solid residues. Especially, the removal rate of Na and K elements was greater than 81%, which is significantly higher than using the traditional oil bath liquefaction, resulting in a relatively high-quality biocrude oil with a high heating value of 25.86 MJ·kg^–1. Overall, this proposed strategy may provide a new sustainable and eco-friendly avenue for the power-to-chemicals valorization of food waste under benign conditions.

Graphical abstract

Keywords

plasma electrolysis / food waste / liquefaction / resource recovery

References

[1] Ng H S, Kee P E, Yim H S, Chen P T, Wei Y H, Chi-Wei Lan J. Recent advances on the sustainable approaches for conversion and reutilization of food wastes to valuable bioproducts. Bioresource Technology, 2020, 302: 122889

[2] Chee E, Wong W, Wang X. An integrated approach for machine-learning-based system identification of dynamical systems under control: application towards the model predictive control of a highly nonlinear reactor system. Frontiers of Chemical Science and Engineering, 2022, 16(2): 237–250

[3] He L, Chang Y, Zhu J, Bi Y, An W, Dong Y, Liu J, Wang S. A cytoprotective graphene oxide-polyelectrolytes nanoshell for single-cell encapsulation. Frontiers of Chemical Science and Engineering, 2021, 15(2): 410–420

[4] Li J, Zhai S, Wu W, Xu Z. Hydrophobic nanocellulose aerogels with high loading of metal–organic framework particles as floating and reusable oil absorbents. Frontiers of Chemical Science and Engineering, 2021, 15(5): 1158–1168

[5] Salemdeeb R, zu Ermgassen E K H J, Kim M H, Balmford A, Al-Tabbaa A. Environmental and health impacts of using food waste as animal feed: a comparative analysis of food waste management options. Journal of Cleaner Production, 2017, 140: 871–880

[6] Sharma P, Gaur V K, Kim S H, Pandey A. Microbial strategies for bio-transforming food waste into resources. Bioresource Technology, 2020, 299: 122580

[7] O’Connor J, Hoang S A, Bradney L, Dutta S, Xiong X, Tsang D C W, Ramadass K, Vinu A, Kirkham M B, Bolan N S. A review on the valorization of food waste as a nutrient source and soil amendment. Environmental Pollution, 2021, 272: 115985

[8] Wang L, Chi Y, Shu D, Weiss-Hortala E, Nzihou A, Choi S. Experimental studies of hydrothermal liquefaction of kitchen waste with H⁺, OH^– and Fe³⁺ additives for bio-oil upgrading. Waste Management & Research, 2021, 39(1): 165–173

[9] Xi D, Zhou R, Zhou R, Zhang X, Ye L, Li J, Jiang C, Chen Q, Sun G, Liu Q, Yang S. Mechanism and optimization for plasma electrolytic liquefaction of sawdust. Bioresource Technology, 2017, 241: 545–551

[10] Zhou R, Zhou R, Wang S, Lan Z, Zhang X, Yin Y, Tu S, Yang S, Ye L. Fast liquefaction of bamboo shoot shell with liquid-phase microplasma assisted technology. Bioresource Technology, 2016, 218: 1275–1278

[11] Jiang C, Liu S, Feng Z, Fang Z, Zhang X, Mei D, Xi D, Luan B, Wang X, Yang S. Plasma electrolytic liquefaction of sawdust. Chinese Physics B, 2019, 28(4): 048803

[12] Xi D, Jiang C, Zhou R, Fang Z, Zhang X, Liu Y, Luan B, Feng Z, Chen G, Chen Z, Liu Q, Yang S. The universality of lignocellulosic biomass liquefaction by plasma electrolysis under acidic conditions. Bioresource Technology, 2018, 268: 531–538

[13] Zhou R, Zhou R, Zhang X, Fang Z, Wang X, Speight R, Wang H, Doherty W, Cullen P J, Ostrikov K, Bazaka K. High-performance plasma-enabled biorefining of microalgae to value-added products. ChemSusChem, 2019, 12(22): 4976–4985

[14] Lu Q, Zhang J, Zhu X. Corrosion properties of bio-oil and its emulsions with diesel. Chinese Science Bulletin, 2008, 53(23): 3726–3734

[15] Gaudino S, Galas C, Belli M, Barbizzi S, de Zorzi P, Jacimovic R, Jeran Z, Pati A, Sansone U. The role of different soil sample digestion methods on trace elements analysis: a comparison of ICP-MS and INAA measurement results. Accreditation and Quality Assurance, 2007, 12(2): 84–93

[16] Osman M B S, Dakroury A Z, Dessouky M T, Kenawy M A, ElSharkawy A A. Measurement of thermophysical properties of ammonium salts in the solid and molten states. Journal of Thermal Analysis, 1996, 46(6): 1697–1703

[17] He B, Ma Y, Gong X, Long Z, Li J, Xiong Q, Liu H, Chen Q, Zhang X, Yang S, Liu Q H. Simultaneous quantification of aqueous peroxide, nitrate, and nitrite during the plasma-liquid interactions by derivative absorption spectrophotometry. Journal of Physics D: Applied Physics, 2017, 50(44): 445207

[18] Breuer P L, Sutcliffe C A, Meakin R L. Cyanide measurement by silver nitrate titration: comparison of rhodanine and potentiometric end-points. Hydrometallurgy, 2011, 106(3–4): 135–140

[19] Giustarini D, Rossi R, Milzani A, Dalle-Donne I. Nitrite and nitrate measurement by griess reagent in human plasma: evaluation of interferences and standardization. Methods in Enzymology, 2008, 440: 361–380

[20] Savidov N A, Alikulov Z A, Lips S H. Identification of an endogenous NADPH-regenerating system coupled to nitrate reduction in vitro in plant and fungal crude extracts. Plant Science, 1998, 133(1): 33–45

[21] Hoogenkamp H, Kumagai H, Wanasundara J P D. Chapter 3—Rice protein and rice protein products. Sustainable Protein Sources, 2017, 47–65

[22] Zou L, Tan W K, Du Y, Lee H W, Liang X, Lei J, Striegel L, Weber N, Rychlik M, Ong C N. Nutritional metabolites in Brassica rapa subsp. chinensis var. parachinensis (choy sum) at three different growth stages: microgreen, seedling and adult plant. Food Chemistry, 2021, 357(5): 129535

[23] Murphy M M, Spungen J H, Bi X, Barraj L M. Fresh and fresh lean pork are substantial sources of key nutrients when these products are consumed by adults in the United States. Nutrition Research, 2011, 31(10): 776–783

[24] Herron K L, Fernandez M L. Are the current dietary guidelines regarding egg consumption appropriate?. Journal of Nutrition, 2004, 134(1): 187–190

[25] Stanojevic S P, Barac M B, Pesic M B, Vucelic-Radovic B V. Protein composition and textural properties of inulin-enriched tofu produced by hydrothermal process. LWT, 2020, 126: 109309

[26] Locke B R, Sato M, Sunka P, Hoffmann M R, Chang J. Electrohydraulic discharge and nonthermal plasma for water treatment. Industrial & Engineering Chemistry Research, 2006, 45(3): 882–905

[27] Hontañón E, Palomares J M, Stein M, Guo X, Engeln R, Nirschl H, Kruis F E. The transition from spark to arc discharge and its implications with respect to nanoparticle production. Journal of Nanoparticle Research, 2013, 15(9): 1957

[28] Li Y, Zhao C, Kwok W M, Guan X, Zuo P, Phillips D L. Observation of a HI leaving group following ultraviolet photolysis of CH₂I₂ in water and an ab initio investigation of the O–H insertion/HI elimination reactions of the CH₂I–I isopolyhalomethane species with H₂O and 2H₂O. Journal of Chemical Physics, 2003, 119(9): 4671–4681

[29] Denysenko I B, Xu S, Long J D, Rutkevych P P, Azarenkov N A, Ostrikov K. Inductively coupled Ar/CH₄/H₂ plasmas for low-temperature deposition of ordered carbon nanostructures. Journal of Applied Physics, 2004, 95(5): 2713–2724

[30] Kleinert T N. Free radical reactions in UV irradiation of cellulose. Holzforschung, 1964, 18(1–2): 24–28

[31] Nakamura Y, Ogiwara Y, Phillips G O. Free radical formation and degradation of cellulose by ionizing radiations. Polymer Photochemistry, 1985, 6(2): 135–159

[32] McDougall J. A hydro-bio-mechanical model for settlement and other behaviour in landfilled waste. Computers and Geotechnics, 2007, 34(4): 229–246

[33] Amaniampong P N, Karam A, Trinh Q T, Xu K, Hirao H, Jerome F, Chatel G. Selective and catalyst-free oxidation of D-glucose to D-glucuronic acid induced by high-frequency ultrasound. Scientific Reports, 2017, 7(1): 40650

[34] Schaich K M. Chapter 1—analysis of lipid and protein oxidation in fats, oils, and foods. Oxidative Stability and Shelf Life of Foods Containing Oils and Fats, 2016, 1–131

[35] Yin S, Tan Z. Hydrothermal liquefaction of cellulose to bio-oil under acidic, neutral and alkaline conditions. Applied Energy, 2012, 92: 234–239

[36] Yamada T, Aratani M, Kubo S, Ono H. Chemical analysis of the product in acid-catalyzed solvolysis of cellulose using polyethylene glycol and ethylene carbonate. Journal of Wood Science, 2007, 53(6): 487–493

[37] Xi D, Wen S, Zhang X, Xie W, Fang Z, Zhou R, Wang D, Zhao D, Ye L, Yang S, (Ken) Ostrikov K. Plasma-electrolytic liquefaction of human waste for biofuels production and recovery of ammonium, chlorine and metals. Chemical Engineering Journal, 2022, 433: 134581

[38] Park J, Xu Z F, Lin M C. Thermal decomposition of ethanol. II. A computational study of the kinetics and mechanism for the H + C₂H₅OH reaction. Journal of Chemical Physics, 2003, 118(22): 9990–9996

[39] Xu Z F, Park J, Lin M C. Thermal decomposition of ethanol. III. A computational study of the kinetics and mechanism for the CH₃ + C₂H₅OH reaction. Journal of Chemical Physics, 2004, 120(14): 6593–6599

[40] Chen J, Lin J H, Xiao J C. Dehydroxylation of alcohols for nucleophilic substitution. Chemical Communications, 2018, 54(51): 7034–7037

[41] Lewis D L, Gattie D K. Prediction of substrate removal rates of attached microorganisms and of relative contributions of attached and suspended communities at field sites. Applied and Environmental Microbiology, 1988, 54(2): 434–440

[42] Altarawneh M, Dlugogorski B Z. A mechanistic and kinetic study on the decomposition of morpholine. Journal of Physical Chemistry A, 2012, 116(29): 7703–7711

[43] Janssen L J J, Hoogland J G. Electrolysis of acidic NaCl solution with a graphite anode—I. the graphite electrode. Electrochimica Acta, 1969, 14(11): 1097–1108

[44] Navarro J L, Nadal M I, Nieto P, Flores J. Effect of nitrate and nitrite curing salts on the generation and oxidation of fatty acids in non-fermented sausages. European Food Research and Technology, 2001, 212(4): 421–425

[45] Shih F F. Effect of anions on the deamidation of soy protein. Journal of Food Science, 1991, 56(2): 452–454

[46] Son Y S, Kim K H, Kim K J, Kim J C. Ammonia decomposition using electron beam. Plasma Chemistry and Plasma Processing, 2013, 33(3): 617–629

[47] Lopez-Gonzalez D, Puig-Gamero M, Acien F G, Garcia-Cuadra F, Valverde J L, Sanchez-Silva L. Energetic, economic and environmental assessment of the pyrolysis and combustion of microalgae and their oils. Renewable & Sustainable Energy Reviews, 2015, 51: 1752–1770

[48] Lu J, Zhang J, Zhu Z, Zhang Y, Zhao Y, Li R, Watson J, Li B, Liu Z. Simultaneous production of biocrude oil and recovery of nutrients and metals from human feces via hydrothermal liquefaction. Energy Conversion and Management, 2017, 134: 340–346

[49] Cantero-Tubilla B, Cantero D A, Martinez C M, Tester J W, Walker L P, Posmanik R. Characterization of the solid products from hydrothermal liquefaction of waste feedstocks from food and agricultural industries. Journal of Supercritical Fluids, 2018, 133(2): 665–673

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