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Biochar has been widely used in the fields of environment and energy, and green preparation can make biochar-based materials more environmentally friendly. Particularly, in the low-temperature pyrolysis of biochar, labile C with low biological toxicity is the main influencing factor of bacteria in soil. Therefore, it is worth studying to develop the fabrication technology of low-temperature pyrolysis biochar with rich pore structure. The mechanical effect of ultrasonic cavitation is considered to be an effective strategy for the preparation of biochar. However, the sonochemical effects on biochar remain to be studied. In this review, ultrasonic modification and ultrasonic-chemical modification on biochar has been reviewed. Metal oxide/biochar composites can also be obtained by an ultrasonic-chemical method. It is worth mentioning that there have been some reports on the regeneration of biochar by ultrasound. In addition to ultrasonic preparation of biochar, ultrasound can also trigger the sonocatalytic performance and promote the adsorption ability of biochar for the removal of harmful substances. The catalytic mechanism of ultrasound/biochar needs to be further investigated. For application, biochar prepared by ultrasound has been used for the removal of heavy metals in water, the adsorption of carbon dioxide, and soil remediation.
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http://dx.doi.org/10.3390/microorganisms10081593 | DOI Listing |
Environ Monit Assess
September 2025
School of Chemical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia.
Ciprofloxacin (CIP), a widely used fluoroquinolone antibiotic, has become a significant contaminant in aquatic environments due to its extensive use and incomplete metabolism. This review comprehensively analyses CIP pollution, including its sources, environmental and health impacts, and removal strategies. Chemical methods such as advanced oxidation processes and physical techniques like adsorption are evaluated for their efficiency in CIP removal.
View Article and Find Full Text PDFBioresour Technol
September 2025
State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
The pyrolysis of flue-cured tobacco stalks (TS) faces challenges such as low bio-oil value and utilization efficiency. Existing studies have overlooked the anatomical heterogeneity of tobacco stalks, thereby limiting the directional regulation of high-value components, such as nicotine and phenolic compounds. This study divides TS into the husk (TSH), xylem (TSX), and pith (TSP), and investigates their physicochemical properties, pyrolysis behavior (through TGA and fixed-bed pyrolysis experiments), and interactions.
View Article and Find Full Text PDFSci Total Environ
September 2025
University Hohenheim, Department of Process Analytics and Cereal Science, Stuttgart, 70599, Germany.
Per- and polyfluoroalkyl substances (PFAS) are persistent organic pollutants with increasing prevalence in agricultural soils, primarily introduced through biosolid application, wastewater irrigation, and atmospheric deposition. This review provides a meta-analysis of terminologies across 145 peer-reviewed studies, identifying inconsistency in the classification of PFAS subgroups-such as "long-chain vs. short-chain," "precursors," and "emerging PFAS"-which hinders regulatory harmonization and model calibration.
View Article and Find Full Text PDFChemosphere
September 2025
Department of Materials Design and Innovation, University at Buffalo, NY, 14260, USA. Electronic address:
Bioremediation offers a sustainable strategy for mitigating heavy metal contamination in soil, but is often constrained by slow removal kinetics, limited uptake efficiency, and high implementation costs. This study investigates dried mycelium membranes, rich in surface-bound proteins and high surface area, as a promising biosorbent for in situ Pb(II) remediation in urban soils. Untreated mycelium membranes buried in soil achieved Pb(II) removal efficiencies of ∼70 % and ∼40 % at initial lead soil concentrations of 100 mg/kg and 1500 mg/kg, respectively, within eight days.
View Article and Find Full Text PDFEnviron Res
September 2025
School of Environmental Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei, 430074, China; Hubei Provincial Engineering Laboratory of Solid Waste Treatment, Disposal and Recycling, 1037 Luoyu Road, Wuhan, Hubei, 430074, China. Electronic address: ho
The activation of peroxymonosulfate (PMS) by biochar has shown promising potential for the efficient degradation and detoxification of antibiotics in wastewater. However, the underlying mechanisms are not fully understood. In this study, Fenton-conditioned sludge-derived biochar (FSBC) was prepared by microwave pyrolysis to activate PMS for the efficient degradation and detoxification of sulfamethoxazole (SMX).
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