Iron (Fe) is the fourth most abundant element in the earth's crust and plays important roles in
both biological and chemical processes. The redox reactivity of various Fe (II) forms has …

Constructed wetlands (CWs) are economical, efficient, and sustainable wastewater
treatment method. Substrates in CWs inextricably link with the other key components and …

Autotrophic denitrification (AuDen) is an efficient, convenient and eco-friendly biological
process for the treatment of nitrate-contaminated organic-deficient waters. AuDen can be …

Iron sulphides, mainly in the form of mackinawite (FeS), pyrrhotite (Fe 1-x S, x= 0–0.125) and
pyrite (FeS 2), are the most abundant sulphide minerals and can be oxidized under anoxic …

Groundwater supplies are progressively being degraded by anthropogenic pollution,
making it challenging to meet the Sustainable Development Goals (SDGs) of access to safe …

Around 50% of humankind relies on groundwater as a source of drinking water. Here we
investigate the age, geochemistry, and microbiology of 138 groundwater samples from 95 …

Many iron (Fe) redox processes that were previously assumed to be purely abiotic, such as
photochemical Fe reactions, are now known to also be microbially mediated. Owing to this …

The searches for suitable substrates with high capacity for phosphorus (P) removal and
promoting denitrification for enhancing nitrogen (N) removal have been a key work in …

The 'iron bacteria'are a collection of morphologically and phylogenetically heterogeneous
prokaryotes. They include some of the first micro-organisms to be observed and described …

A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and
updated the description of Special Regions on Mars as places where terrestrial organisms …