Changes in inorganic and organic matters in processed water from hydrothermal-treated biogas slurry

Jin, 2021, Decoupling livestock and crop production at the household level in China, Nat. Sustainability, 4, 48, 10.1038/s41893-020-00596-0 Springmann, 2018, Options for keeping the food system within environmental limits, Nature, 562, 519, 10.1038/s41586-018-0594-0 Li, 2022, Microbial inoculants and struvite improved organic matter humification and stabilized phosphorus during swine manure composting: multivariate and multiscale investigations, Bioresour. Technol., 351, 10.1016/j.biortech.2022.126976 Zhang, 2022, Improving the humification and phosphorus flow during swine manure composting: a trial for enhancing the beneficial applications of hazardous biowastes, J. Hazard. Mater., 425, 10.1016/j.jhazmat.2021.127906 Wang, 2021, Biogas energy generated from livestock manure in China: current situation and future trends, J. Environ. Manage., 297, 10.1016/j.jenvman.2021.113324 Shaheen, 2022, Manganese oxide-modified biochar: production, characterization and applications for the removal of pollutants from aqueous environments - a review, Bioresour. Technol., 346, 10.1016/j.biortech.2021.126581 Wang, 2022, Adsorption characteristics of three types of soils on biogas slurry ammonium nitrogen, Front. Environ. Sci., 10 Zhang, 2020, Phosphorus recovered from digestate by hydrothermal processes with struvite crystallization and its potential as a fertilizer, Sci. Total Environ., 698, 10.1016/j.scitotenv.2019.134240 He, 2023, The potential for livestock manure valorization and phosphorus recovery by hydrothermal technology - a critical review, Mater. Sci. Energy Technol. 6, 94 Deng, 2020, Mechanisms and modelling of phosphorus solid–liquid transformation during the hydrothermal processing of swine manure, Green Chem., 22, 5628, 10.1039/D0GC01281E He, 2022, Impact of catalytic hydrothermal treatment and Ca/Al-modified hydrochar on lability, sorption, and speciation of phosphorus in swine manure: microscopic and spectroscopic investigations, Environ. Pollut., 299, 10.1016/j.envpol.2022.118877 Zhang, 2020, Swine manure valorization for phosphorus and nitrogen recovery by catalytic–thermal hydrolysis and struvite crystallization, Sci. Total Environ., 729, 10.1016/j.scitotenv.2020.138999 Deng, 2019, Optimization and mechanism studies on cell disruption and phosphorus recovery from microalgae with magnesium modified hydrochar in assisted hydrothermal system, Sci. Total Environ., 646, 1140, 10.1016/j.scitotenv.2018.07.369 Zhang, 2022, Biowaste valorization to produce advance carbon materials-hydrochar for potential application of Cr (VI) and Cd (II) adsorption in wastewater: a review, Water., 14, 3675, 10.3390/w14223675 Shi, 2018, Polyethylene imine modified hydrochar adsorption for chromium (VI) and nickel (II) removal from aqueous solution, Bioresour. Technol., 247, 370, 10.1016/j.biortech.2017.09.107 Yuan, 2018, Fertilizer potential of liquid product from hydrothermal treatment of swine manure, Waste Manag., 77, 166, 10.1016/j.wasman.2018.05.018 Kumar, 2020, Applications of biomass-derived materials for energy production, conversion, and storage, Mater. Sci. Energy Technol., 3, 905 Köchermann, 2018, Hydrothermal carbonization: temperature influence on hydrochar and aqueous phase composition during process water recirculation, J. Environ. Chem. Eng., 6, 5481, 10.1016/j.jece.2018.07.053 Cao, 2021, Effect of residence time during hydrothermal carbonization of biogas digestate on the combustion characteristics of hydrochar and the biogas production of process water, Bioresour. Technol., 333, 10.1016/j.biortech.2021.125110 Latham, 2021, Self-generation of low ash carbon microspheres from the hydrothermal supernatant of anaerobic digestate: formation insights and supercapacitor performance, Chem. Eng. J. Adv., 6, 10.1016/j.ceja.2021.100097 Roman, 2021, Hydrothermal treatment of biogas digestate as a pretreatment to reduce fouling in membrane filtration, Bioresour. Technol. Rep., 13 Aragon-Briceno, 2020, Hydrothermal carbonization of sewage digestate at wastewater treatment works: influence of solid loading on characteristics of hydrochar, process water and plant energetics, Renew. Energy, 157, 959, 10.1016/j.renene.2020.05.021 APHA (American Public Health Association), 2012. Standard Methods for the Examination of Water and Wastewater (Washington DC, USA). Chen, 2003, Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter, Environ. Sci. Tech., 37, 5701, 10.1021/es034354c Hochholdinger, 2008, Conserved and diverse mechanisms in root development, Curr. Opin. Plant Biol., 11, 70, 10.1016/j.pbi.2007.10.002 Yu, 2022, Influences of hydrothermal carbonization on phosphorus availability of swine manure-derived hydrochar: insights into reaction time and temperature, Mater. Sci. Energy Technol., 5, 416 Li, 2020, Phosphorus species transformation and recovery without apatite in FeCl3-assisted sewage sludge hydrothermal treatment, Chem. Eng. J., 399, 10.1016/j.cej.2020.125735 Heilmann, 2014, Phosphorus reclamation through hydrothermal carbonization of animal manures, Environ. Sci. Tech., 48, 10323, 10.1021/es501872k Ekpo, 2016, Influence of pH on hydrothermal treatment of swine manure: impact on extraction of nitrogen and phosphorus in process water, Bioresour. Technol., 214, 637, 10.1016/j.biortech.2016.05.012 Dai, 2015, Immobilization of phosphorus in cow manure during hydrothermal carbonization, J. Environ. Manage., 157, 49, 10.1016/j.jenvman.2015.04.009 Dimitriadis, 2017, Hydrothermal liquefaction of various biomass and waste feedstocks for biocrude production: a state of the art review, Renew. Sustain. Energy Rev., 68, 113, 10.1016/j.rser.2016.09.120 Bolan, 2011, Dissolved organic matter: biogeochemistry, dynamics, and environmental significance in soils, Adv. Agron.110, 1 Wang, 2017, Microwave-assisted digestion and NaOH treatment of waste-activated sludge to recover phosphorus by crystallizing struvite, Environ. Technol., 38, 1211, 10.1080/09593330.2016.1220630 Zhang, 2018, Microwave digestion-assisted HFO/biochar adsorption to recover phosphorus from swine manure, Sci. Total Environ., 621, 1512, 10.1016/j.scitotenv.2017.10.077 Xie, 2022, Assessment of catalytic thermal hydrolysis of swine manure slurry as liquid fertilizer: insights into nutrients and metals, Front. Environ. Sci., 10, 1005290, 10.3389/fenvs.2022.1005290 Yu, 2014, Nutrient flows and quality of biocrude oil produced via catalytic hydrothermal liquefaction of low-lipid microalgae, Bioenergy Res., 7, 1317, 10.1007/s12155-014-9471-3 Hable, 2019, Simultaneous solid and biocrude product transformations from the hydrothermal treatment of high pH-induced flocculated algae at varying Ca concentrations, Algal Res., 40, 10.1016/j.algal.2019.101501 Shi, 2022, Speciation evolution and transformation mechanism of P during microwave hydrothermal process of sewage sludge, Sci. Total Environ., 815, 10.1016/j.scitotenv.2021.152801 Withers, 2015, Greening the global phosphorus cycle: how green chemistry can help achieve planetary P sustainability, Green Chem., 17, 2087, 10.1039/C4GC02445A Xiong, 2019, Value-added chemicals from food supply chain wastes: a critical review, Chem. Eng. J., 375, 10.1016/j.cej.2019.121983 Zhang, 2020, Ammonium nitrogen recovery from digestate by hydrothermal pretreatment followed by activated hydrochar sorption, Chem. Eng. J., 379, 10.1016/j.cej.2019.122254 Jin, 2022, Agro-environmental sustainability of using digestate fertilizer for solanaceous and leafy vegetables cultivation: insights on fertilizer efficiency and risk assessment, J. Environ. Manage., 320, 10.1016/j.jenvman.2022.115895 Samoraj, 2022, The challenges and perspectives for anaerobic digestion of animal waste and fertilizer application of the digestate, Chemosphere, 295, 10.1016/j.chemosphere.2022.133799 Belete, 2022, Hydrothermal carbonization of anaerobic digestate and manure from a dairy farm on energy recovery and the fate of nutrients, Bioresour. Technol., 333