ArticleFrontiers in microbiology2026
Synthesis of biochar-supported sulfidated nanoscale zero-valent iron and its application as a persulfate activator for remediation of crude oil-contaminated soil.
Article in Frontiers in microbiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Petroleum contamination poses a serious threat to soil ecosystems and microbial communities. Persulfate (PS)-based advanced oxidation has shown promising remediation potential; however, conventional nanoscale zero-valent iron (nZVI) suffers from surface passivation, aggregation, and limited stability in complex soil systems. To address these challenges, a biochar-supported sulfidated nanoscale zero-valent iron composite (S-nZVI@BC) was synthesized via liquid-phase reduction to enhance PS activation efficiency and improve remediation performance in crude oil-contaminated soil. Material characterization confirmed the successful loading of sulfidated nZVI onto biochar with good dispersion. At a biochar loading rate of 25%, S/Fe molar ratio of 1:10, and activated carbon particle size of 0.83 mm, the S-nZVI@BC/PS system achieved the best crude oil degradation effect. Moreover, a maximum degradation efficiency of 90.14% was achieved by employing PS and S-nZVI@BC dosages of 2 and 10%, respectively, at a water-soil ratio of 1:1. SO
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