A laboratory study finds that ball-milled wood biochar reduces silver ions to silver nanoparticles only under weakly alkaline conditions, driven by superoxide radicals. Nano-biochar turns toxic silver ions into nanoparticles only when pH rises Silver ions are among the more…
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…
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 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.
A batch adsorption study reports that a locally engineered powdered activated carbon removed 69.4% of COD and 73.7% of BOD5 from Kumasi Abattoir effluent at 25 g/L.
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…
Adding manganese-modified biochar to white-rot fungal fermentation raised lignin degradation by 93.4 percent and humic acid content by 47.7 percent over 35 days. In a 35-day solid-state fermentation experiment using wheat straw, the manganese-modified biochar, or MBC, increased lignin degradation by 93.4 percent, humic…
A ZnO-doped TiO2/carbon nanocomposite made from vegetable-tanned leather waste degraded up to 97 percent of two pharmaceutical pollutants under natural sunlight within 120 minutes.
Researchers fabricated two otherwise identical cellulose-supported MOF films and found the copper-based version adsorbed more methylene blue while the nickel-based one performed better on real textile effluent. Article Title: Influence of copper and nickel nodes on the adsorption behavior of…
The chemistry of water: contaminants in rivers, groundwater and drinking water, nitrates, disinfection and the chemistry of water treatment.
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