Biochar application as a green clean-up method: bibliometric analysis of current trends and future perspectives

Abstract

Biochar has recently emerged as a cutting-edge solution for environmental remediation, distinguishing itself from traditional methods. This essay presents a comprehensive examination of the effectiveness and future prospects of biochar through innovative bibliometric analysis techniques. Since 2010, the global application of biochar as a soil amendment has surged, evolving from its conventional uses in fuel and carbon sequestration to enhancing soil functionality, a novel approach in environmental science. With over 250 research reports published during this period, biochar has demonstrated exceptional potential in improving soil properties, including water retention, nutrient cycling, and the promotion of beneficial microbial communities. However, this work identifies a critical innovation gap: the lack of a precise definition for biochar as a soil amendment in the United States, as well as the need for interdisciplinary research that bridges soil science with plant molecular biology and genetics. Our investigation not only confirms the effectiveness of biochar as a sustainable remediation method, but also suggests its potential applications in mitigating pollution and addressing climate change impacts. While current literature primarily focuses on the role of biochar in enhancing soil fertility, we have uncovered emerging trends, pointing to its use in remediating contaminated land and removing organic pollutants, which is innovative application in the field. Additionally, we highlight the novel use of advanced tools such as scanning electron microscopy (SEM) and X-ray diffraction (XRD) to study changes following biochar application, offering a new perspective on biochar research. The versatility and effectiveness of biochar in environmental remediation make it a promising tool for sustainable soil management and pollution mitigation, underscoring the need for continued interdisciplinary research to fully realize its potential.

Keywords

Biochar amendment / Green clean-up method / Bibliometric analysis / Remediation

References

[1] AbramoG, D’AngeloCA, RealeE. Peer review versus bibliometrics: which method better predicts the scholarly impact of publications?. Scientometrics, 2019, 121: 537-554

[2] AdesinaA. Recent advances in the concrete industry to reduce its carbon dioxide emissions. Environ Challenge, 2020, 1, ArticleID: 100004

[3] AgarwalA, et al.. Bibliometrics: tracking research impact by selecting the appropriate metrics. Asian J Androl, 2016, 18(2): 296-309

[4] AhmadM, et al.. Biochar as a sorbent for contaminant management in soil and water: a review. Chemosphere, 2014, 99: 19-33

[5] AhmadJ, et al.. Exploring untapped effect of process conditions on biochar characteristics and applications. Environ Technol Innov, 2021, 21 ArticleID: 101310

[6] AhmedM, HameedB. Insight into the co-pyrolysis of different blended feedstocks to biochar for the adsorption of organic and inorganic pollutants: a review. J Clean Prod, 2020, 265 ArticleID: 121762

[7] AhmedMB, et al.. Progress in the preparation and application of modified biochar for improved contaminant removal from water and wastewater. Biores Technol, 2016, 214: 836-851

[8] AkiyaN, SavagePE. Roles of water for chemical reactions in high-temperature water. Chem Rev, 2002, 102(8): 2725-2750

[9] Al Masud MA, et al. (2023) A critical review of sustainable application of biochar for green remediation: Research uncertainty and future directions. Science of The Total Environment. 166813

[10] AllerDM, et al.. Long term biochar effects on corn yield, soil quality and profitability in the US Midwest. Field Crop Res, 2018, 227: 30-40

[11] AnandA, KumarV, KaushalP. Biochar and its twin benefits: crop residue management and climate change mitigation in India. Renew Sustain Energy Rev, 2022, 156 ArticleID: 111959

[12] AtkinsonC. How good is the evidence that soil-applied biochar improves water-holding capacity?. Soil Use Manag, 2018, 34(2): 177-186

[13] Barbhuiya S, Das BB, Kanavaris F (2024) Biochar-concrete: A comprehensive review of properties, production and sustainability. Case Studies in Construction Materials. e02859.

[14] Barbu A, et al. (2024) Digital technology as a facilitator of improving organizational performance and workplace satisfaction: a bibliometric analysis using VOSviewer. in Proceedings of the International Conference on Business Excellence

[15] BeesleyL, Moreno-JimenezE, Gomez-EylesJL. Effects of biochar and greenwaste compost amendments on mobility, bioavailability and toxicity of inorganic and organic contaminants in a multi-element polluted soil. Environ Pollut, 2010, 158(6): 2282-2287

[16] BrtnickyM, et al.. A critical review of the possible adverse effects of biochar in the soil environment. Sci Total Environ, 2021, 796 ArticleID: 148756

[17] BurrellLD, et al.. Long-term effects of biochar on soil physical properties. Geoderma, 2016, 282: 96-102

[18] BussW, et al.. Unlocking the fertilizer potential of waste-derived biochar. ACS Sustain Chem Eng, 2020, 8(32): 12295-12303

[19] ChanKY, et al.. Agronomic values of greenwaste biochar as a soil amendment. Soil Res, 2007, 45(8): 629-634

[20] ChandraS, BhattacharyaJ. Influence of temperature and duration of pyrolysis on the property heterogeneity of rice straw biochar and optimization of pyrolysis conditions for its application in soils. J Clean Prod, 2019, 215: 1123-1139

[21] Chaturvedi R, et al. Maximizing towards the sustainability: integrating materials, energy, and resource efficiency in revolutionizing manufacturing industry. in E3S Web of Conferences. 2023. EDP Sciences.

[22] ChenM, et al.. Effects of acid modification on the structure and adsorption NH4+-N properties of biochar. Renew Energy, 2021, 169: 1343-1350

[23] ChenX, et al.. Effects of biochar addition on rice growth and yield under water-saving irrigation. Water, 2021, 13(2): 209

[24] ChenB, et al.. Visualizing the knowledge domain in health education: a scientometric analysis based on CiteSpace. Int J Environ Res Public Health, 2022, 19(11): 6440

[25] ChiaramontiD, PanoutsouC. Policy measures for sustainable sunflower cropping in EU-MED marginal lands amended by biochar: case study in Tuscany. Italy Biomass and Bioenergy, 2019, 126: 199-210

[26] DasSK, GhoshGK, AvastheR. Biochar application for environmental management and toxic pollutant remediation. Biomass Conv Biorefin, 2023, 13(1): 555-566

[27] De JesusR, AlkendiR. A minireview on the bioremediative potential of microbial enzymes as solution to emerging microplastic pollution. Front Microbiol, 2023, 13: 1066133

[28] DhimanS, et al.. Microplastics in aquatic and food ecosystems: remediation coupled with circular economy solutions to create resource from waste. Sustainability, 2023, 15(19): 14184

[29] Donne S (2017) Appendix 2. Specific surface area and porosity measurements. Biochar: A Guide to Analytical Methods. 297

[30] Downie A, Biochar production and use: environmental risks and rewards. 2011, UNSW Sydney.

[31] Dwibedi SK, Behera B, Khawajazada F (2023) Biochar production and its impact on sustainable agriculture, in bio-inspired land remediation. Springer. p. 445-474

[32] EnaimeG, et al.. Biochar for wastewater treatment—conversion technologies and applications. Appl Sci, 2020, 10(10): 3492

[33] Faheem, et al.. Application of biochar in advanced oxidation processes: supportive, adsorptive, and catalytic role. Environ Sci Pollut Res Int, 2020, 27(30): 37286-37312

[34] FaisalM, et al.. Control technologies of wastewater treatment plants: the state-of-the-art, current challenges, and future directions. Renew Sustain Energy Rev, 2023, 181 ArticleID: 113324

[35] FardamiAY, et al.. Microbes associated with bioremediation of microplastic waste in Nigerian freshwater bodies: a review. UMYU Scientifica, 2023, 2(1): 140-150

[36] GalinatoSP, YoderJK, GranatsteinD. The economic value of biochar in crop production and carbon sequestration. Energy Policy, 2011, 39(10): 6344-6350

[37] GiagnoniL, RenellaG. Effects of biochar on the C use efficiency of soil microbial communities: components and mechanisms. Environments, 2022, 9(11): 138

[38] GorovtsovAV, et al.. The mechanisms of biochar interactions with microorganisms in soil. Environ Geochem Health, 2020, 42: 2495-2518

[39] GuptaM, et al.. Use of biomass-derived biochar in wastewater treatment and power production: a promising solution for a sustainable environment. Sci Total Environ, 2022, 825 ArticleID: 153892

[40] GurwickNP, et al.. A systematic review of biochar research, with a focus on its stability in situ and its promise as a climate mitigation strategy. PLoS ONE, 2013, 8(9) ArticleID: e75932

[41] GwenziW, et al.. Biochars as media for air pollution control systems: contaminant removal, applications and future research directions. Sci Total Environ, 2021, 753 ArticleID: 142249

[42] Hazra A, et al. Plasma arc technology: a potential solution toward waste to energy conversion and of GHGs mitigation, in waste valorisation and recycling: 7th IconSWM—ISWMAW 2017, 2. 2019, Springer. p. 203-217

[43] HeM, et al.. A critical review on performance indicators for evaluating soil biota and soil health of biochar-amended soils. J Hazard Mater, 2021, 414 ArticleID: 125378

[44] HowesEL, et al.. An updated synthesis of the observed and projected impacts of climate change on the chemical, physical and biological processes in the oceans. Front Mar Sci, 2015, 2: 36

[45] IngwersenW, et al.. Integrated metrics for improving the life cycle approach to assessing product system sustainability. Sustainability, 2014, 6 3): 1386-1413

[46] InyangM, DickensonE. The potential role of biochar in the removal of organic and microbial contaminants from potable and reuse water: a review. Chemosphere, 2015, 134: 232-240

[47] IwuozorKO, et al.. Unlocking the hidden value of pods: a review of thermochemical conversion processes for biochar production. Biores Technol, 2023, 4: 101488

[48] Jacob M, Hellström T, Affording excellence: What does excellence funding do for researchers? Policy Studies, 2023: p. 1–19.

[49] Jansen D, Drivers and barriers for biochar deployment in Swedish agriculture. 2023.

[50] Jha P, et al. (2010) Biochar in agriculture–prospects and related implications, in Current science. 1218–1225.

[51] Joseph S et al., Socio-economic feasibility, implementation and evaluation of small-scale biochar projects, in Biochar for Environmental Management. 2015, Routledge. p. 853-879.

[52] JungS, ParkY-K, KwonEE. Strategic use of biochar for CO2 capture and sequestration. J CO2 Utiliz, 2019, 32: 128-139

[53] KarimMR. Biochar for promoting sustainable agriculture. Zero Hunger, 2020 Springer 123-130

[54] KavithaB, et al.. Benefits and limitations of biochar amendment in agricultural soils: a review. J Environ Manage, 2018, 227: 146-154

[55] KazawadiD, NtalikwaJ, KombeG. A review of intermediate pyrolysis as a technology of biomass conversion for coproduction of biooil and adsorption biochar. J Renew Energy, 2021, 2021: 1-10

[56] KhanMF. Fungi for sustainable pharmaceutical remediation: enzymatic innovations, challenges, and applications—a review. Processes, 2025, 13(4): 1034

[57] KhanN, et al.. Biochar and environmental sustainability: emerging trends and techno-economic perspectives. Biores Technol, 2021, 332 ArticleID: 125102

[58] Khoiriyah S, Syaputra MD (2024) Bioremediation to Overcome Microplastic Contamination in The Water Environment. in IOP Conference Series: Earth and Environmental Science. 2024. IOP Publishing.

[59] KokolP, Blažun VošnerH, ZavršnikJ. Application of bibliometrics in medicine: a historical bibliometrics analysis. Health Inf Lib J, 2021, 38(2): 125-138

[60] KumarA, BhattacharyaT. Biochar: a sustainable solution. Environ Dev Sustain, 2021, 23: 6642-6680

[61] KurniawanTA, et al.. Challenges and opportunities for biochar to promote circular economy and carbon neutrality. J Environ Manage, 2023, 332 ArticleID: 117429

[62] LairdD, et al.. Biochar impact on nutrient leaching from a Midwestern agricultural soil. Geoderma, 2010, 158(3–4): 436-442

[63] LatawiecAE, et al.. Willingness to adopt biochar in agriculture: the producer’s perspective. Sustainability, 2017, 9(4): 655

[64] LengL, et al.. Biochar stability assessment methods: a review. Sci total environ, 2019, 647: 210-222

[65] Lehmann J, Joseph S, Biochar for environmental management: science, technology and implementation. 2015: Routledge.

[66] LeydesdorffL, WagnerC. Is the United States losing ground in science? A global perspective on the world science system. Scientometrics, 2009, 78: 23-36

[67] LiS, TasnadyD. Biochar for soil carbon sequestration: Current knowledge, mechanisms, and future perspectives. Char, 2023, 9(3): 67

[68] LiD, et al.. Biochar-related studies from 1999 to 2018: a bibliometrics-based review. Environ Sci Pollut Res Int, 2020, 27(3): 2898-2908

[69] LiL, et al.. Role of biochar in improving sandy soil water retention and resilience to drought. Water, 2021, 13(4): 407

[70] LiY, et al.. Review of biochar production via crop residue pyrolysis: development and perspectives. Biores Technol, 2023, 369 ArticleID: 128423

[71] LiuC, HuangX, KongL. Efficient low temperature hydrothermal carbonization of Chinese reed for biochar with high energy density. Energies, 2017, 10(12): 2094

[72] LiuJ, et al.. Preparation, environmental application and prospect of biochar-supported metal nanoparticles: a review. J Hazard Mater, 2020, 388 ArticleID: 122026

[73] LiuJ, et al.. Application potential analysis of biochar as a carbon capture material in cementitious composites: A review. Constr Build Mater, 2022, 350 ArticleID: 128715

[74] LyuH, et al.. Biochar affects greenhouse gas emissions in various environments: a critical review. Land Degrad Dev, 2022, 33(17): 3327-3342

[75] Lyu H, et al. (2023) Conversion of organic solid waste into energy and functional materials using biochar catalyst: Bibliometric analysis, research progress, and directions. Applied Catalysis B: Environmental. 123223

[76] MaY, et al.. What motivates farmers to participate in sustainable agriculture? Evidence and policy implications. Int J Sust Dev World, 2009, 16(6): 374-380

[77] Major J, et al. Biochar effects on nutrient leaching, in Biochar for environmental management. 2012, Routledge. p. 303-320

[78] MajumderS, et al.. The impact of biochar on soil carbon sequestration: meta-analytical approach to evaluating environmental and economic advantages. J Environ Manage, 2019, 250 ArticleID: 109466

[79] MajumderS, et al.. Engineered biochar for the effective sorption and remediation of emerging pollutants in the environment. J Environ Chem Eng, 2023, 11(2) ArticleID: 109590

[80] Manchanda S, Karypis G (2021) Evaluating scholarly impact: Towards content-aware bibliometrics. in Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing

[81] ManyàJJ. Pyrolysis for biochar purposes: a review to establish current knowledge gaps and research needs. Environ Sci Technol, 2012, 46 15): 7939-7954

[82] ManyàJJ, AzuaraM, MansoJA. Biochar production through slow pyrolysis of different biomass materials: Seeking the best operating conditions. Biomass Bioenerg, 2018, 117: 115-123

[83] MatuštíkJ, HnátkováT, KočíV. Life cycle assessment of biochar-to-soil systems: a review. J Clean Prod, 2020, 259, ArticleID: 120998

[84] MengZ, et al.. Respective evolution of soil and biochar on competitive adsorption mechanisms for Cd(II), Ni(II), and Cu(II) after 2-year natural ageing. J Hazard Mater, 2024, 469 ArticleID: 133938

[85] MinofarB, et al.. Understanding the molecular mechanisms of interactions between biochar and denitrifiers in N₂O emissions reduction: pathway to more economical and sustainable fertilizers. Soil Tillage Res, 2025, 248, ArticleID: 106405

[86] MohammedS, et al.. Co-designing sustainable biochar business models with sub-Saharan African communities for inclusive socio-economic transformation. Sci Rep, 2024, 14(1): 15802

[87] MongaD, et al.. Engineered biochar: a way forward to environmental remediation. Fuel, 2022, 311 ArticleID: 122510

[88] NanH, et al.. A bibliometric analysis of biochar application in wastewater treatment from 2000 to 2021. Int J Environ Sci Technol, 2023, 20(12): 13957-13974

[89] Ngan A, Jia CQ, Tong ST (2019)Production, characterization and alternative applications of biochar. Prod Mater Sustain Biomass Res. 117–151

[90] Nosratabad NA, et al., Exploring nanomaterial-modified biochar for environmental remediation applications. Heliyon. 2024.

[91] NovakJM, et al.. Impact of biochar amendment on fertility of a southeastern coastal plain soil. Soil Sci, 2009, 174(2): 105-112

[92] NovakJM, et al.. Designing relevant biochars as soil amendments using lignocellulosic-based and manure-based feedstocks. J Soils Sediments, 2014, 14: 330-343

[93] NovakJ, et al.. Biochars impact on water infiltration and water quality through a compacted subsoil layer. Chemosphere, 2016, 142: 160-167

[94] OsmanAI, et al.. Biochar for agronomy, animal farming, anaerobic digestion, composting, water treatment, soil remediation, construction, energy storage, and carbon sequestration: a review. Environ Chem Lett, 2022, 20(4): 2385-2485

[95] PandeyS. Biochar–an essential component for soil enhancement, plant development and environmental cleanup. J Int Environ Appl Sci, 2023, 18(1): 33-39

[96] ParamasivanB. Microwave assisted carbonization and activation of biochar for energy-environment nexus: a review. Chemosphere, 2022, 286, ArticleID: 131631

[97] ParkJH, et al.. Biochar reduces the bioavailability and phytotoxicity of heavy metals. Plant Soil, 2011, 348: 439-451

[98] PatelMR, PanwarNL. Evaluating the agronomic and economic viability of biochar in sustainable crop production. Biomass Bioenerg, 2024, 188, ArticleID: 107328

[99] PessinVZ, YamaneLH, SimanRR. Smart bibliometrics: an integrated method of science mapping and bibliometric analysis. Scientometrics, 2022, 127(6): 3695-3718

[100] PhillipsCL, et al.. Preliminary evaluation of a decision support tool for biochar amendment. Biochar, 2020, 2(1): 93-105

[101] PittC, ParkA, McCarthyIP. A bibliographic analysis of 20 years of research on innovation and new product development in technology and innovation management (TIM) journals. J Eng Tech Manage, 2021, 61, ArticleID: 101632

[102] PolzellaA, et al.. Toward an understanding of mechanisms regulating plant response to biochar application. Plant Biosyst Int J Dealing Aspects Plant Biol, 2019, 153(1): 163-172

[103] PourhashemG, et al.. Policy support for biochar: review and recommendations. GCB Bioenergy, 2019, 11(2): 364-380

[104] PradhanS, et al.. Food waste biochar: a sustainable solution for agriculture application and soil–water remediation. Carbon Res, 2024, 3(1): 1-29

[105] PradhanS, et al.. A comprehensive decision-making approach for the application of biochar in agriculture to enhance water security: a GIS-AHP based approach. Environ Technol Innov, 2024, 36, ArticleID: 103801

[106] PriceC, MorrisJ, MorrisC. Biochar carbon markets: a mitigation deterrence threat. Environ Sci Policy, 2024, 154, ArticleID: 103704

[107] QambraniNA, et al.. Biochar properties and eco-friendly applications for climate change mitigation, waste management, and wastewater treatment: a review. Renew Sustain Energy Rev, 2017, 79: 255-273

[108] QianK, et al.. Recent advances in utilization of biochar. Renew Sustain Energy Rev, 2015, 42: 1055-1064

[109] QinF, et al.. Lignocellulosic biomass carbonization for biochar production and characterization of biochar reactivity. Renew Sustain Energy Rev, 2022, 157 ArticleID: 112056

[110] QinF, et al.. Biochar in the 21st century: a data-driven visualization of collaboration, frontier identification, and future trend. Sci Total Environ, 2022, 818 ArticleID: 151774

[111] RagazziM, et al.. Anaerobic digestion as sustainable source of energy: a dynamic approach for improving the recovery of organic waste. Energy Procedia, 2017, 119: 602-614

[112] RajputP, et al.. Nanomaterials and biochar mediated remediation of emerging contaminants. Sci Total Environ, 2024, 916: 170064

[113] RazzaghiF, ObourPB, ArthurE. Does biochar improve soil water retention? A systematic review and meta-analysis. Geoderma, 2020, 361 ArticleID: 114055

[114] Ren J, et al. (2025) Degradation of microplastics by microbial in combination with a micromotor. ACS Sustain Chem Eng. 2025

[115] RittlTF, ArtsB, KuyperTW. Biochar: an emerging policy arrangement in Brazil?. Environ Sci Policy, 2015, 51: 45-55

[116] RobertsKG, et al.. Life cycle assessment of biochar systems: estimating the energetic, economic, and climate change potential. Environ Sci Technol, 2010, 44(2): 827-833

[117] RombelA, KrasuckaP, OleszczukP. Sustainable biochar-based soil fertilizers and amendments as a new trend in biochar research. Sci Total Environ, 2022, 816 ArticleID: 151588

[118] RombolaAG, et al.. Effect of biochar amendment on organic matter and dissolved organic matter composition of agricultural soils from a two-year field experiment. Sci Total Environ, 2022, 812 ArticleID: 151422

[119] Saleem I, et al., Biochar and microbes for sustainable soil quality management, in microbiome under changing climate. 2022, Elsevier. p. 289-311

[120] SaloE, et al.. Nordic perspectives on the emerging biochar business. J Clean Prod, 2024, 475 ArticleID: 143660

[121] SchwamingerSP, et al.. Immobilization of PETase enzymes on magnetic iron oxide nanoparticles for the decomposition of microplastic PET. Nanoscale Adv, 2021, 3(15): 4395-4399

[122] ShackleyS, et al. Biochar in European soils and agriculture: science and practice, biochar in european soils and agriculture: science and practice, 2016 New York Taylor and Francis

[123] Shahapure KR, Nicholas C. Cluster quality analysis using silhouette score. in 2020 IEEE 7th international conference on data science and advanced analytics (DSAA). 2020. IEEE.

[124] Shanmugam MahadevanI, et al.. Biotechnological interventions for monitoring and mitigating microplastic pollution and development of alternatives to single-use plastics. Environ Qual Manage, 2024, 34(1) ArticleID: e22186

[125] SharmaM, et al.. A comprehensive review of renewable energy production from biomass-derived bio-oil. BioTechnol J Biotechnol Comput Biol Bionanotechnol, 2019, 100 2): 179

[126] ShikhaFS, et al.. Effects of biochar and biofertilizer on groundnut production: a perspective for environmental sustainability in Bangladesh. Carbon Res, 2023, 2(1): 10

[127] SinghE, et al.. Circular economy-based environmental management using biochar: Driving towards sustainability. Process Saf Environ Prot, 2022, 163: 585-600

[128] SinghalS. Biochar as a cost-effective and eco-friendly substitute for binder in concrete: a review. Eur J Environ Civ Eng, 2023, 27(2): 984-1009

[129] SongY, YangQ. Revisiting the modularity-disease transmission link: uncovering the importance of intra-modular structure. J Theor Biol, 2024, 583 ArticleID: 111772

[130] Souza FilhoIR, et al.. Green steel at its crossroads: hybrid hydrogen-based reduction of iron ores. J Clean Prod, 2022, 340 ArticleID: 130805

[131] TanRR. Data challenges in optimizing biochar-based carbon sequestration. Renew Sustain Energy Rev, 2019, 104: 174-177

[132] TanX, et al.. Application of biochar for the removal of pollutants from aqueous solutions. Chemosphere, 2015, 125: 70-85

[133] ThébaultE. Identifying compartments in presence–absence matrices and bipartite networks: insights into modularity measures. J Biogeogr, 2013, 40(4): 759-768

[134] ThenganeSK, et al.. Market prospects for biochar production and application in California. Biofuels Bioprod Biorefin, 2021, 15(6): 1802-1819

[135] Thrun MC, Projection-based clustering through self-organization and swarm intelligence: combining cluster analysis with the visualization of high-dimensional data. 2018: Springer.

[136] TripathiM, SahuJN, GanesanP. Effect of process parameters on production of biochar from biomass waste through pyrolysis: a review. Renew Sustain Energy Rev, 2016, 55: 467-481

[137] Van EckN, WaltmanL. Software survey: VOSviewer, a computer program for bibliometric mapping. Scientometrics, 2010, 84(2): 523-538

[138] Vasiljevic-ShikaleskaA, GjozinskaB, StojanovikjM. The circular economy-a pathway to sustainable future. J Sustain Dev, 2017, 7(17): 13-30

[139] VenturaE, et al.. Recent advances in the relationships between biofilms and microplastics in natural environments. World J Microbiol Biotechnol, 2024, 40(7): 220

[140] Verde SF, Chiaramonti D, The biochar system in the EU: the pieces are falling into place, but key policy questions remain. 2021: European University Institute.

[141] VerheijenFG, et al.. Biochar increases water use efficiency in eucalypt plants under water and nutrient limitation, with trade-offs under non-limiting conditions. J Soil Sci Plant Nutr, 2022, 22(2): 1732-1742

[142] VijayV, et al.. Review of large-scale biochar field-trials for soil amendment and the observed influences on crop yield variations. Front Energy Res, 2021, 9, ArticleID: 710766

[143] WanZ, et al.. Sustainable remediation with an electroactive biochar system: mechanisms and perspectives. Green Chem, 2020, 22(9): 2688-2711

[144] WangM, et al.. Review on utilization of biochar for metal-contaminated soil and sediment remediation. J Environ Sci, 2018, 63: 156-173

[145] WangT, et al.. Co-pyrolysis behavior of sewage sludge and rice husk by TG-MS and residue analysis. J Clean Prod, 2020, 250 ArticleID: 119557

[146] WangC, et al.. Co-pyrolysis of sewage sludge and rice husk by TG–FTIR–MS: Pyrolysis behavior, kinetics, and condensable/non-condensable gases characteristics. Renew Energy, 2020, 160: 1048-1066

[147] WangZ, et al.. Co-pyrolysis of waste plastic and solid biomass for synergistic production of biofuels and chemicals-A review. Prog Energy Combust Sci, 2021, 84, ArticleID: 100899

[148] WangC, et al.. Biochar-based slow-release of fertilizers for sustainable agriculture: a mini review. Environ Sci Ecotechnol, 2022, 10 ArticleID: 100167

[149] WangL, et al.. Role of biochar toward carbon neutrality. Carbon Research, 2023, 2(1): 2

[150] WangW, et al.. Phytoremediation of contaminated sediment combined with biochar: feasibility, challenges and perspectives. J Hazard Mater, 2024, 465 ArticleID: 133135

[151] Wang Q, et al. (2024) Research Progress in Microbial Degradation of Microplastics. in Journal of Physics: Conference Series. IOP Publishing.

[152] WaqasM, et al.. Development of biomass-derived biochar for agronomic and environmental remediation applications. Biomass Conv Biorefin, 2021, 11: 339-361

[153] Williams B (2020) Dimensions & VOSViewer bibliometrics in the reference interview. Code4Lib J. (47)

[154] Wilson DC, et al. Global waste management outlook. 2015: UNEP.

[155] WoolfD, et al.. Sustainable biochar to mitigate global climate change. Nat Commun, 2010, 1(1): 56

[156] WuP, et al.. Bibliometric analysis of biochar research in 2021: a critical review for development, hotspots and trend directions. Biochar, 2023, 5(1): 6

[157] XiaL, et al.. Climate mitigation potential of sustainable biochar production in China. Renew Sustain Energy Rev, 2023, 175 ArticleID: 113145

[158] XiangW, et al.. Biochar technology in wastewater treatment: a critical review. Chemosphere, 2020, 252 ArticleID: 126539

[159] XieT, et al.. Characteristics and applications of biochar for environmental remediation: a review. Crit Rev Environ Sci Technol, 2015, 45(9): 939-969

[160] YadavP, MishraV. Comprehending microplastic pollution in diverse environment: assessing fate, impacts, and remediation approaches. Int Biodeterior Biodegrad, 2025, 196: 105953

[161] YadavR, RamakrishnaW. Biochar as an environment-friendly alternative for multiple applications. Sustainability, 2023, 15(18): 13421

[162] Yadav NK et al. (2018) Biochar and their impacts on soil properties and crop productivity: a review, in Journal of Pharmacognosy and Phytochemistry. 2018. 49–54.

[163] YangY, et al.. Application of biochar for the remediation of polluted sediments. J Hazard Mater, 2021, 404(Pt A) ArticleID: 124052

[164] Yang J, et al. Comparison of complex network analysis software: Citespace, SCI 2 and Gephi. in 2017 IEEE 2nd International conference on Big data analysis (ICBDA). 2017. IEEE.

[165] YeZ, et al.. Data-driven visualization of the dynamics of machine learning in materials research. J Clean Prod, 2024, 449, ArticleID: 141410

[166] Yu O-Y, Raichle B, Sink S, Impact of biochar on the water holding capacity of loamy sand soil, in International Journal of Energy and Environmental Engineering. 2013. p. 1–9.

[167] YuanP, et al.. Review of biochar for the management of contaminated soil: preparation, application and prospect. Sci Total Environ, 2019, 659: 473-490

[168] ZacherAH, et al.. A review and perspective of recent bio-oil hydrotreating research. Green Chem, 2014, 16 2): 491-515

[169] ZhangD, et al.. Performance impact of research policy at the Chinese academy of sciences. Res Policy, 2011, 40(6): 875-885

[170] ZhangD, et al.. Is current biochar research addressing global soil constraints for sustainable agriculture?. Agr Ecosyst Environ, 2016, 226: 25-32

[171] ZhangC, et al.. Biochar for environmental management: mitigating greenhouse gas emissions, contaminant treatment, and potential negative impacts. Chem Eng J, 2019, 373: 902-922

[172] Zhang, et al.. A meta-analysis study on the use of biochar to simultaneously mitigate emissions of reactive nitrogen gases (N2O and NO) from soils. Sustainability, 2023

[173] ZhangK, et al.. The role of biochar nanomaterials in the application of environmental remediation and pollution control. Chem Eng J, 2024, 492: 152310

[174] ZhaoW, et al.. A review of biochar in anaerobic digestion to improve biogas production: performances, mechanisms and economic assessments. Biores Technol, 2021, 341 ArticleID: 125797

[175] Zheng H et al. (2020) Biochar for water and soil remediation: production, characterization, and application. A New Paradigm for Environmental Chemistry and Toxicology: From Concepts to Insights, 153–196.

[176] ZhengQ, et al.. Past, present and future of living systematic review: a bibliometrics analysis. BMJ Glob Health, 2022, 7(10) ArticleID: e009378

[177] ZhouW, et al.. Dynamic development analysis of complex network research: a bibliometric analysis. Complexity, 2022, 2022 1): 1512939

[178] ZhuX, et al.. Effects and mechanisms of biochar-microbe interactions in soil improvement and pollution remediation: a review. Environ Pollut, 2017, 227: 98-115

[179] ZimmermanAR, GaoB, AhnM-Y. Positive and negative carbon mineralization priming effects among a variety of biochar-amended soils. Soil Biol Biochem, 2011, 43(6): 1169-1179

[180] ZulkepliN, et al.. Cost benefit analysis of composting and anaerobic digestion in a community: a review. Chem Eng Trans, 2017, 56: 1777-1782

Funding

Chongqing Municipal Science and Technology Bureau(cstc2021ycjh-bgzxm0002)

Chinese Academy of Sciences(XDA28020300)

Chinese Academy of Sciences(177GJHZ2022020BS)

RIGHTS & PERMISSIONS

The Author(s)