In this article, we provide a critical review on the occurrence, formation, structure and stability
of schwertmannite–an enigmatic Fe (III) oxyhydroxy-sulfate mineral that is of widespread …

Purpose The rationale of this paper is to review the state of the art regarding the biotic and
abiotic reactions that can influence Fe availability in soils. In soil, the management-induced …

Electron transfer (redox) reactions, mediated by soil microbiota, modulate elemental cycling
and, in part, establish the redox poise of soil systems. Understanding soil redox processes …

Most of the cadmium (Cd) accumulated in rice grains is derived from its remobilization in
soils during the grain filling period when paddy water is drained. The factors affecting Cd …

Acid sulfate soils (ASS) contain substantial quantities of iron sulfide minerals or the oxidation
reaction products of these sulfidic minerals. Transformation of iron (Fe) and sulfur (S) …

Coastal wetlands host large and dynamic reservoirs of organic carbon (C) and are also
biogeochemical hotspots for a wide range of Fe (hydr-) oxides with different chemical …

Anaerobic ammonium oxidation coupled with nitrite reduction is an important microbial
pathway of nitrogen removal in intertidal wetlands. However, little is known about the role of …

Cadmium (Cd) contamination in paddy soils has aroused global concern. Sulfur modified
biochar (BC) could combine the benefits of BC and S for Cd remediation. However, no …

To improve our understanding of the carbon cycling response to imminent sea-level rise and
saltwater intrusions, we review the existing literature on the likely effects of the increasing …

Purpose Iron's fluctuation between the II (ferrous) and III (ferric) oxidation states has been
coined as the “Fe III–Fe II redox wheel.” Numerous studies have coupled the “iron redox …