Moreover, the release of excess Cr3+ is a threat to the environment as redox cycling between Cr3+ and the highly toxic Cr6+ can occur in aerobic soils, notwithstanding that Cr3+ is the most stable form in nature [11–13].
Moreover, the release of excess Cr3+is a threat to the environment as redox cycling between Cr3+ and thehighly toxic Cr6+ can occur in aerobic soils, notwithstanding that Cr3+is the most stable form in nature [11–13].