Beneficial synergistic effect on bio-oil production from co-liquefaction of sewage sludge and lignocellulosic biomass

A review on co-pyrolysis of biomass: An optional technique to obtain a high-grade pyrolysis oil

Abnisa, F., & Wan Daud, W. M. A. (2014) · Energy Conversion and Management · doi:10.1016/j.enconman.2014.07.007 · Cited by 903

Sludge: A waste or renewable source for energy and resources recovery?

Tyagi, V. K., & Lo, S. (2013) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2013.05.029 · Cited by 692

Towards sewage sludge based biofuels via thermochemical conversion – A review

Manara, P., & Zabaniotou, A. A. (2012) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2012.01.074 · Cited by 619

Comparative studies of oil compositions produced from sawdust, rice husk, lignin and cellulose by hydrothermal treatment

Karagöz, S., Bhaskar, T., Muto, A., & Sakata, Y. (2005) · Fuel · doi:10.1016/j.fuel.2005.01.004 · Cited by 325

Recent progress in the direct liquefaction of typical biomass

Huang, H.-J., & Yuan, X.-Z. (2015) · Progress in Energy and Combustion Science · doi:10.1016/j.pecs.2015.01.003 · Cited by 323

Hydrothermal gasification of sewage sludge and model compounds for renewable hydrogen production: A review

He, C. H., Chen, C.-L., Giannis, A., Yang, Y., & Wang, J. (2014) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2014.07.141 · Cited by 289

Chemicals from Direct Coal Liquefaction

Mochida, I., Okuma, O., & Yoon, S. (2013) · Chemical Reviews · doi:10.1021/cr4002885 · Cited by 274

05/02428 Comparative studies of oil compositions produced from sawdust, rice husk, lignin and cellulose by hydrothermal treatment

(2005) · Fuel and Energy Abstracts · doi:10.1016/s0140-6701(05)82926-1 · Cited by 252

Structural analysis of bio-oils from sub-and supercritical water liquefaction of woody biomass

Qian, Y., Zuo, C., Jian, T., & He, J. (2006) · Energy · doi:10.1016/j.energy.2006.03.027 · Cited by 237

Comparative studies of thermochemical liquefaction characteristics of microalgae, lignocellulosic biomass and sewage sludge

Huang, H.-J., Yuan, X.-Z., Zhu, H.-N., Li, H., Liu, Y., Wang, X.-L., & Zeng, G.-M. (2013) · Energy · doi:10.1016/j.energy.2013.04.065 · Cited by 214

Enhanced production of hydrocarbons from lignin isolated from sugarcane bagasse using formic acid induced supercritical ethanol liquefaction followed by hydrodeoxygenation

Dhakshinamoorthy, G. P., Gopinath, K. P., Viswanathan, V., Suresh, S., Sivaramakrishnan, R., & Lan, N. T. (2021) · Chemosphere · doi:10.1016/j.chemosphere.2021.131491 · Cited by 14

Bioenergy from biofuel residues and waste

Plante, L., Sheehan, N. P., Bier, P. V., Murray, K., Quell, K., Ouellette, C., & Martinez, E. (2019) · Water Environment Research · doi:10.1002/wer.1214 · Cited by 14

Study on prediction models of oxygenated components content in biomass pyrolysis oil based on neural networks and random forests

Zou, Y., Tian, H., Huang, Z., Liu, L., Xuan, Y., Dai, J., & Nie, L. (2025) · Biomass and Bioenergy · doi:10.1016/j.biombioe.2025.107601 · Cited by 13

Comparative thermal and structural analysis of biochar from rapeseed meal and Fraxinus excelsior sawdust

Meysami, M., Rabie, A., Najafabadi, R. A., Meysami, A., & Isfahani, T. D. (2025) · Results in Engineering · doi:10.1016/j.rineng.2025.106397 · Cited by 13

Distribution and transformation behaviors of heavy metals during liquefaction process of sewage sludge in ethanol-water mixed solvents

Pan, Z.-Q., Huang, H., Zhou, C.-F., Lai, F., He, X., Xiong, J.-B., & Xiao, X.-F. (2019) · Journal of Central South University · doi:10.1007/s11771-019-4212-6 · Cited by 13

Advancing hydrothermal liquefaction of Canadian forestry biomass for sustainable biocrude production: co-solvent integration, co-liquefaction, and process optimization

Awadakkam, S., Chaudhary, V., Kalagnanam, R., Borugadda, V. B., & Dalai, A. K. (2025) · Sustainable Energy & Fuels · doi:10.1039/d4se01347f · Cited by 12

Co-Liquefaction of Faecal Sludge and Water Hyacinth: Exploring the Fuel Characteristics of Biocrude Including Thermal Maturation and Petroleum Fractionation

Opu, R. K., Hossain, M. R., Monir, M. S. H., Shanto, R. H., & Osman, M. S. (2022) · Biomass and Bioenergy · doi:10.1016/j.biombioe.2023.106785 · Cited by 12

Sewage sludge pyrolysis ‘kills two birds with one stone’: Biochar synergies with persulfate for pollutants removal and energy recovery

Li, S., Zhou, Y., Wang, J., Dou, M., Zhang, Q., Huo, K., Han, C., & Shi, J. (2024) · Chemosphere · doi:10.1016/j.chemosphere.2024.142824 · Cited by 11

Chemical evaluation of pyrolysis oils from domestic and industrial effluent treatment station sludges with perspective to produce value-added products

Rodrigues, J. L., Campêlo, J. D. M., Wisniewski, A., Hantao, L. W., Eberlin, M. N., & Santos, J. M. (2023) · Waste Management · doi:10.1016/j.wasman.2023.06.004 · Cited by 11

Beyond conventional approaches: Sustainable valorization of sewage sludge - challenges and opportunities

Basri, S., Oruganti, R. K., Panda, T. K., & Bhattacharyya, D. (2025) · Sustainable materials and technologies · doi:10.1016/j.susmat.2025.e01496 · Cited by 10

Ethanol-Assisted Hydrothermal Liquefaction of Poplar Using Fe-Co/Al2O3 as Catalyst

Wu, H., Shakeel, U., Zhang, Q., Zhang, K., Xu, X., & Xu, J. H. (2022) · Energies · doi:10.3390/en15093057 · Cited by 10

Bioenergy from biofuel residues and waste

Sheehan, N. P., Ng, A., Murray, K., Martinez, E., Quell, K., Ouellette, C., Flagg, T., & Boyle, J. (2020) · Water Environment Research · doi:10.1002/wer.1381 · Cited by 10

Hydrothermal liquefaction of sewage sludge for circular bioeconomy: Focus on lignocellulose wastes, microplastics, and pharmaceuticals

Abbas, S. C., Alam, A., Mian, M. M., Walker, C. C., & Ni, Y. (2025) · Journal of Bioresources and Bioproducts · doi:10.1016/j.jobab.2025.02.001 · Cited by 7

Optimizing Formic Acid-Assisted Co-HTL of Digested Sewage Sludge and Lignocellulosic Waste for Enhanced Bio-Crude Yield and Energy Recovery

Herdlevær, K. M., & Barth, T. (2024) · Energies · doi:10.3390/en17010258 · Cited by 9

Enhanced Biogas Production from Thermophilic Anaerobic Digestion of Poultry Slaughterhouse Sludge: Effect of Thermal Pretreatment and Micronutrients Supplementation

Méndez-Contreras, J. M., Atenodoro-Alonso, J., López-Escobar, L. A., & Nava-Valente, N. (2023) · Waste and Biomass Valorization · doi:10.1007/s12649-023-02277-3 · Cited by 9

Engineering biomass-derived CO2 capture materials via hydrothermal processes

Nabhai, A., Plaza, N. Z., Bechle, N. J., Abubakr, S., Atihan, M., Springstead, J. R., Wu, Q., Li, K., & Li, J. (2025) · Progress in Natural Science Materials International · doi:10.1016/j.pnsc.2025.02.011 · Cited by 9

Catalytic degradation of poplar by Na2CO3 and Na2CO3/Fe under various hydrothermal liquefaction processes

Wu, H., Shakeel, U., Zhang, Q., Zhang, K., Xu, X., Yuan, Y., & Xu, J. H. (2022) · Energy · doi:10.1016/j.energy.2022.125055 · Cited by 8

Characterization of Biocrude Oils from Hydrothermal Liquefaction of De-ashed Energy Grass

Katongtung, T., Phromphithak, S., Onsree, T., Lauterbach, J. A., & Tippayawong, N. (2023) · JOM · doi:10.1007/s11837-023-06234-2 · Cited by 8

Solvothermal co‐liquefaction of wastes from Citrus limetta fruit processing

Acharya, S., & Kishore, N. (2023) · Journal of Chemical Technology & Biotechnology · doi:10.1002/jctb.7316 · Cited by 7

Biosurfactant rhamnolipid assisted microemulsification of bio-oil components in diesel

Leng, L. (2018) · Energy Sources Part A Recovery Utilization and Environmental Effects · doi:10.1080/15567036.2018.1520362 · Cited by 7

Subcritical Hydrothermal Co-Liquefaction of Process Rejects at a Wastepaper-Based Paper Mill with Waste Soybean Oil

Shie, J., Yang, W., Liau, Y.-R., Liau, T.-H., & Yang, H.-R. (2021) · Energies · doi:10.3390/en14092442 · Cited by 7

Aqueous phase recirculation in hydrothermal liquefaction: A critical review

Shah, A. A., Khan, M. I., Noonari, A. A., Jatoi, A. S., & Sandquist, J. (2025) · Biomass and Bioenergy · doi:10.1016/j.biombioe.2025.108612 · Cited by 6

Hydrothermal Co-Liquefaction of Sugarcane Bagasse and Residual Cooking Soybean Oil for Bio-Crude Production

de Oliveira, M. V., Pelisson, M., Hamerski, F., Kanda, L. R. S., Voll, F. A. P., Ramos, L. P., & Corazza, M. L. (2024) · Processes · doi:10.3390/pr12071371 · Cited by 5

Linking biochar physico-chemical traits to sorghum growth and soil carbon dynamics

Kefalew, A., Geremew, A., Guthrie, D. M., Elder, D., Woldesenbet, S., Grady, T. L., Shrestha, A. B., Amarasekara, A. S., Ray, R. L., Kuloyo, O., et al. (2025) · Frontiers in Environmental Science · doi:10.3389/fenvs.2025.1644821 · Cited by 4

Bibliometric Analysis of Hydrothermal Co-Processing of Biomass for Energy Generation

Fatokun, V. O., Tetteh, E. K., & Rathilal, S. (2026) · Energies · doi:10.3390/en19081843 · Cited by 3

Hydrothermal liquefaction of organic solid waste to produce biofuel

Yang, T. (2025) · Elsevier eBooks · doi:10.1016/b978-0-443-29291-0.00009-0 · Cited by 1

Co-liquefaction of α-cellulose and phycocyanin: A preliminary study

Ji, H., Zhang, Z., & Zhang, B. (2024) · BioResources · doi:10.15376/biores.19.3.4278-4291 · Cited by 1

Proposal for a Conceptual Biorefinery for the Conversion of Waste into Biocrude, H2 and Electricity Based on Hydrothermal Co-Liquefaction and Bioelectrochemical Systems

Bassoli, S. C., Cardozo, M. H. A. D. L., Naves, F. L., Samanamud, G. R. L., & Amaral, M. D. S. (2025) · Fermentation · doi:10.3390/fermentation11040162 · Cited by 1

Application of biosurfactant in fuel formulation

Leng, L., Yang, L., Zhang, W., Li, H., & Yuan, X. (2021) · Elsevier eBooks · doi:10.1016/b978-0-12-823380-1.00013-7 · Cited by 1

Plasma-electrolytic biorefinery of sewage sludge for clean oil and bio-derived metal oxide production

Xi, D., Qi, F., Zhou, R., Zhang, X., Fang, Z. M., Zhou, R., Ostrikov, K., & Yang, S. (2022) · Sustainable materials and technologies · doi:10.1016/j.susmat.2022.e00533 · Cited by 1

Investigation of the synergistic effects of temperature and feedstock-to-solvent ratio on co-liquefaction of Citrus limetta pulp and peel wastes

Acharya, S., & Kishore, N. (2023) · Biomass Conversion and Biorefinery · doi:10.1007/s13399-023-05181-x · Cited by 1

Co‐Liquefaction of Biomass to Biofuels

Martínez‐Narro, G., & Phan, A. N. (2021) · Wiley eBooks · doi:10.1002/9781119793038.ch5 · Cited by 1

The effect of biodiesel soot structure on diesel particulate filter (DPF) performance

Guo, Y. (2020) · Queensland University of Technology · doi:10.5204/thesis.eprints.204305

Effect of Severity and Mixing Ratio of Sewage Sludge and Food Waste on Biocrude Yield Via Hydrothermal Co-LiquefactionPreprint

Kawale, H. D., Summers, S., Wang, Z., & Zhang, Y. (2024) · SSRN Electronic Journal · doi:10.2139/ssrn.4893520

Integrated co-HTL and two-stage extraction of fecal sludge and rice husk toward high-yield middle-to-heavy distillate-rich biocrude

Khalekuzzaman, M., Islam, M. R., Pantho, N. A., Chowdhury, D. R., & Nasim, K. M. (2026) · Fuel Processing Technology · doi:10.1016/j.fuproc.2026.108532

Catalytic Co‐Liquefaction of Biodegradable Fraction of Municipal Solid Waste and Sugarcane Bagasse

Ajgaonkar, N., Badgujar, Y., & Pawar, H. S. (2026) · Chemical Engineering & Technology · doi:10.1002/ceat.70289

Valorizing South Asia’s largest Sewage treatment plant waste through rice Husk-Assisted total solids optimization for middle-to-heavy distillate-rich biocrude production

Khalekuzzaman, M., Pantho, N. A., Islam, M. R., Chowdhury, D. R., & Nasim, K. M. (2026) · Energy Conversion and Management X · doi:10.1016/j.ecmx.2026.102275

Hydrothermal Liquefaction of Palm Oil Biomass for Bio-oil Production: A Short Review

Salim, N. D., Thorifah, F. A., Prakoso, T., Saputera, W. H., & Hantoko, D. (2026) · Journal of Physics Conference Series · doi:10.1088/1742-6596/3324/1/012022

Co-liquefaction of sewage sludge and rice straw/wood sawdust: The effect of process parameters on the yields/properties of bio-oil and biochar products

Huang, H., Chang, Y.-C., Lai, F., Zhou, C.-F., Pan, Z.-Q., Xiao, X.-F., Wang, J.-X., & Zhou, C. (2019) · Energy · doi:10.1016/j.energy.2019.02.071 · Cited by 74

Co-treatment of swine manure and lignocellulosic biomass by liquefaction: Parameter optimization, product characterization, reaction mechanism

Luo, Z.-M., Xiong, J.-B., Jiang, M., Li, L., Wang, G.-F., & Huang, H. (2023) · The Journal of Supercritical Fluids · doi:10.1016/j.supflu.2023.106138 · Cited by 13

Co-liquefaction of mixed biomass feedstocks for bio-oil production: A critical review

Li, Q., Yuan, X., Hu, X., Meers, E., Ong, H. C., Chen, W.-H., Duan, P., Zhang, S., Lee, K. B., & Ok, Y. S. (2022) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2021.111814 · Cited by 73

Co-pyrolysis of sewage sludge and pinewood sawdust: the synergistic effect and bio-oil characteristics

Bai, J., Fu, X., Lv, Q., Chen, F., Yang, Y. F., Wang, J., Gan, W., Deng, F., & Zhu, C. (2021) · Biomass Conversion and Biorefinery · doi:10.1007/s13399-021-01809-y · Cited by 32

Enhanced biocrude production from hydrothermal conversion of municipal sewage sludge via co-liquefaction with various model feedstocks

Wang, W., Du, H., Huang, Y., Wang, S., Liu, C., Li, J., Zhang, J., Lu, S., Wang, H., & Meng, H. (2022) · RSC Advances · doi:10.1039/d2ra02325c · Cited by 14