Nitrate

! The removal of NO3 by a CuCrO2-mediated catalytic photoprocess was investigated under mild conditions. The delafossite CuCrO2 exhibits an excellent chemical stability over the whole pH range and relatively a large specific surface area when elaborated by chemical means. The optical gap was found t

The mining industry uses large amounts of explosives and a part of them remains undetonated. Since most commercial blasting agents contain ammonium nitrate, there is a direct relationship between explosives use and the ammonium and nitrate levels in mine effluents. Water contamination with nitrogeno

Brine disposal remains a key consideration when employing ion exchange (IEX) for nitrate removal. To circumvent this issue, research was conducted into developing an immersed membrane bioreactor (MBR) as a replacement for ion exchange. This paper compares the economics of the two process options whi

Diffuse nitrogen pollution caused by irrigated agriculture is quantified for the Pocochay stream located in the Aconcagua watershed in the Valparaíso region, Chile. The study area has an extent of 93 km2 with 36 km2 under irrigation. It is representative for the central part of Chile where intensive

This work discusses the applicability of the DSPM with dielectric exclusion (DSPM-DE) to describe nitrate rejection of a high rejection nanofiltration membrane (NF90 from Dow-Filmtec). In particular, the limitations of the application of the model to relatively high feed concentration and different

Removal of nitrate anion from aqueous solution stays one of the principal goals of much study concerning water treatment. Besides biological and membrane separation treatment, Anion exchange resin technique has been widely investigated and the most result was leading to an efficient elimination. In

The aim of the study was to evaluate polycyclic aromatic hydrocarbons (PAHs) removal during co-fermentation of sewage sludge and organic fraction of municipal solid waste under nitrate and sulphate reducing conditions. Samples were incubated at 37°C for 20 d. Two series of experiments were running s

A nanomembrane (NTR 729HF) and three different types of reverse osmosis (RO) membranes (CPA2, LFC1, and ESPA1) were tested for the treatment of high concentration of nitrate wastewater from stainless steel – industry. All the tested RO membranes showed higher rejection rates (90–99% at 1000–60 mg/L

The feasibility of micellar-enhanced ultrafiltration (MEUF) for the removal of nitrate, chromate, and ferriccyanide was investigated because of ionic competition to bind on the cetylpyridinium chloride micelles. In a single pollutants system, the order of removal efficiency was nitrate <chromate <fe

This study is focused on the influence of the nature of the water to be treated on the efficiency of nitrate elimination by a commercial membrane. By gradually increasing the complexity of the treated solutions (binary, ternary mixtures and then natural waters), we identified the physical, chemical