Choose your amendment wisely: Zero-valent iron nanoparticles offered no advantage over microparticles in a laboratory study on metal immobilization in a contaminated soil

Revealing the long-term behaviour of nZVI and biochar in metal(loid)-contaminated soil: focus on Fe transformations

“…However, relying on the possible effect of natural attenuation can be toxic for the biota at the contaminated site, and a sustainable solution needs to be applied at the moment even for short-term remediation. Dovletyarova et al 106 recently showed that natural Fe oxides and BC-supported nZVI and ZVI microparticles had similar efficiency in the short time at immobilising metals in Cu- and Ni-contaminated soil. Therefore, possible modifications of the amendments could result in significantly more efficient BC-based materials for soil remediation 14 and limit the aggregation and potential toxicity of nZVI.…”

Future Role of Sustainable Innovative Technologies in Crisis Management

“…Of those limited field studies on this topic, efficiency of nZVI was observed for the immobilization of Cr (Singh et al, 2012), As and Hg (Gil-Díaz et al, 2019) in metal(loid) enriched postindustrial soils. In general, there is an inclination towards a viewpoint that the differences between effectiveness of micro-ZVI and nZVI are negligible in relation to plant growth, foliar elemental concentrations, and exchangeable metal concentrations in the short term (Dovletyarova et al, 2022). Yet the retention of metal(loid)s over a long period of time could be more efficient in soils treated with micro-ZVI, due to the higher amount of poorly crystalline Fe in the ZVItreated soil (Danila et al, 2020).…”