A new review synthesizes VOC sources, occurrence, analytical methods and climate feedbacks in the Tibetan Plateau and polar regions. On the analytical side, the authors report that gas chromatography–mass spectrometry (GC–MS) remains the most widely applied technique for…
All water comes from somewhere. Researchers who want to know where it comes from rely on water isotopes, variants of water molecules with slightly different masses, as location identifiers. In particular, the specific fraction of heavy to light water isotopes…
A soil amendment study found that a zinc-modified rice husk biochar pyrolyzed at 600°C was the most effective material for stabilizing cadmium in a contaminated calcareous soil.
Biochar -- a charcoal-like substance made primarily from agricultural waste products -- holds promise for removing emerging contaminants such as pharmaceuticals from treated wastewater. "Most sewage treatment plants are currently not equipped to remove emerging contaminants such as pharmaceuticals, and if those…
Xanthotoxin isolated from a Himalayan medicinal plant selectively detects hypochlorite with a visible yellow color change, a 57 micromolar detection limit and reversible response in about one minute. Subject of Research: A natural coumarin from Prangos pabularia developed as a colorimetric…
A two-year field trial in China's coastal saline soils found that adding straw or biochar to manure raised soil organic carbon through distinct mechanisms, with straw boosting labile carbon and microbial necromass and biochar improving aggregates and pore structure. Subject…
A ten-year Chinese field trial shows biochar and maize stover build soil organic carbon through distinct molecular pathways, with biochar favoring long-term stable storage and stover driving active microbial carbon cycling. Subject of Research: Divergent soil carbon sequestration pathways of…
A magnetically recoverable fungal biomass composite modified with copper ferrite nanoparticles and the MOF ZIF-67 removed up to 99.17 percent of cadmium from synthetic solutions and 70.2 to 82.6 percent from real industrial wastewaters.
Loading redox-active manganese onto biochar boosted soil DNRA rates 2.9-fold and cut nitrous oxide emissions in a 22-day paddy soil incubation study. Subject of Research: Manganese-loaded biochar enhancing electron shuttling to promote dissimilatory nitrate reduction to ammonium in paddy soil…
KOH-activated biochar made from Pinus roxburghii pinecones removed up to 83.59 percent of Mn(II) from water under statistically optimized conditions of pH 8.0, 5 g/L dosage, 229.4 rpm stirring, and 45.6 minutes of contact time. Pinecone Biochar Strips Manganese From Water at 83.59% Efficiency The…
The chemistry of the natural world: what is in water and soil, where pollutants go and how chemists clean them up.
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