Dang Tuan Minh Truong, Huynh Thao Thu Thi, Chang-Chien Guo-Ping, Bui Ha Manh
Department of Environmental and Safety Engineering, Dayeh University, Changhua County 510006, Taiwan.
Institute of Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaohsiung 833301, Taiwan.
Beilstein J Nanotechnol. 2025 Aug 21;16:1401-1416. doi: 10.3762/bjnano.16.102. eCollection 2025.
This study employs a bibliometric analysis using CiteSpace to explore research trends on the impact of biochar on microplastics (MPs) in soil and water environments. In agricultural soils, MPs reduce crop yield, alter soil properties, and disrupt microbial diversity and nutrient cycling. Biochar, a stable and eco-friendly material, has demonstrated effectiveness in mitigating these effects by restoring soil chemistry, enhancing microbial diversity and improving crop productivity. Recent studies report that biochar increases crop yields by 30-81%, even under high MP contamination levels (up to five times that of biochar-modified bacteria). Additionally, biochar enhances Olsen-P availability by 46.6%, increases soil organic carbon in microaggregates by 35.7%, and reduces antibiotic resistance genes by promoting beneficial microbes such as , , and . In aquatic systems, biochar serves as an efficient adsorbent, particularly for MPs larger than 10 µm, including polystyrene. Studies suggest that fixed-column models achieve superior removal efficiency (95.31% ± 5.26%) compared to batch systems (93.36% ± 4.92%). Specifically, for MPs ≥10 µm, fixed columns reach 99% efficiency, while magnetically modified biochar captures 96.2% of MPs as small as 1 µm. These efficiencies stem from biochar's integration of physical and chemical mechanisms that enhance MP retention, particularly for MPs smaller than 10 µm, positioning it as a promising solution for nanoplastic remediation.
本研究采用文献计量分析法，利用CiteSpace探索生物炭对土壤和水环境中微塑料（MPs）影响的研究趋势。在农业土壤中，微塑料会降低作物产量、改变土壤性质并破坏微生物多样性和养分循环。生物炭是一种稳定且环保的材料，已证明通过恢复土壤化学性质、增强微生物多样性和提高作物生产力来减轻这些影响是有效的。最近的研究报告称，即使在高微塑料污染水平（高达生物炭改性细菌污染水平的五倍）下，生物炭也能使作物产量提高30 - 81%。此外，生物炭使有效磷的有效性提高46.6%，使微团聚体中的土壤有机碳增加35.7%，并通过促进有益微生物（如 、 和 ）来减少抗生素抗性基因。在水生系统中，生物炭是一种高效吸附剂，特别是对于大于10 µm的微塑料，包括聚苯乙烯。研究表明，与间歇系统（93.36% ± 4.92%）相比，固定柱模型具有更高的去除效率（95.31% ± 5.26%）。具体而言，对于≥10 µm的微塑料，固定柱的去除效率达到99%，而磁性改性生物炭能捕获96.2%小至1 µm的微塑料。这些效率源于生物炭物理和化学机制的结合，这种结合增强了微塑料的保留能力，特别是对于小于10 µm的微塑料，使其成为纳米塑料修复的一个有前景的解决方案。
