Arsenic contamination in water poses a serious threat on human health. The tea fungus known as Kombucha is a waste produced during black tea fermentation. The objective of this study was to examine the main aspect of a possible strategy for the removal of arsenates employing tea fungal biomass. The pretreatment of biomass with FeCl3 was found to improve the biosorption efficiency. Arsenics upta...

Four new ethylenediamine-templated iron arsenates and fluoroarsenates have been hydrothermally synthesized from iron metal, hydrofluoric and arsenic acids, and ethylenediamine. Fe(H2AsO4)(HAsO4)2.enH2.H2O (1) is one-dimensional and contains chains, FeIIIFeIIF2(HAsO4)(AsO4).enH2.2H2O (2) is a layered fluoroarsenate, and Fe3(HAsO4)6.enH2.NH3.NH4 (3) and Fe2F2(AsO4)2(H2O).enH2 (4) are an arsenate ...

The family of layered vanadates, arsenates, and phosphates is discussed in terms a modular concept. group includes minerals vésignéite bayldonite, number synthetic analogous modifications which are not isotypic, but their crystal structures comprise similar blocks (modules) consisting central octahedral layer filled by atoms d elements (Mn, Ni, Cu, or Co) adjacent [VO4], [AsO4], [PO4] tetrahedr...

OBJECTIVES A population based case-control study was conducted in a highly agricultural area in Italy to investigate the association between chronic lymphocytic leukaemias (CLLs) and non-Hodgkin's lymphomas (NHLs), and subtypes, and exposure to pesticides in farming-animal breeding workers. METHODS 187 cases of CLLs and NHLs and 977 population controls were interviewed on medical, residential...