Six new 9-hydroxybriarane diterpenoids, briarenolides ZI-ZVI (1-6), were isolated from a gorgonian coral Briareum sp. The structures of briaranes 1-6 were elucidated by spectroscopic methods and by comparison of their spectroscopic data with those of related analogues. Briarenolides ZII (2) and ZVI (6) were found to significantly inhibit the expression of the pro-inflammatory inducible nitric o...

Zero valent iron (ZVI; Fe(0)) has been successfully employed for the transformation and subsequent detoxification of a wide range of environmental contaminants, including chlorinated organics, heavy metals, nitroaromatics and, to some degree, perchlorate. The combined use of ZVI plus controlled release carbon has been shown to generate environmental conditions defined herein as in situ chemical...

Abstract Advanced treated municipal wastewater is an important alternative water source for agricultural irrigation. However, the possible persistence of chemical and microbiological contaminants in these waters raise potential safety concerns with regard to reusing food crop Two low-cost environmentally-friendly filter media, biochar (BC) zero-valent iron (ZVI), have attracted great interest t...

A combined zero valent iron (ZVI) and anaerobic-aerobic process was adopted for the treatment of 2,4-dinitrochlorobenzene (DNCB)-containing wastewater. The transformation pathway, reduction of acute toxicity and enhancement of biodegradability were investigated. After pretreatment by ZVI, DNCB in wastewater could be completely converted into 2,4-diaminochlorobenzene (DACB). The ratio of BOD5/CO...

The feasibility of a heterogeneous Fenton Process (ZVI/H2O2) using commercial low-carbon-steel nails as the Zero-Valent Iron (ZVI) source was evaluated for first time removal natural organic matter (NOM) from surface waters with distinct physico-chemical characteristics. synergistic effect ZVI and H2O2 on process confirmed. Results showed similar efficiencies NOM in water samples Thames river R...

A series of nanocomposites consisting of zero-valent iron nanoparticles (ZVI NPs) encapsulated in SiO2 microspheres were successfully synthesized through a successive two-step method, i.e., the wet chemical reduction by borohydride followed by a modified Stöber method. The as-synthesized nanocomposites were characterized using X-ray diffraction, field emission scanning electron microscopy, vibr...

The Electro-Fenton (E-Fenton) technique has shown great potential in wastewater treatment, while the sustainable and continuing supply of Fe2+ remains challenging. Herein, we demonstrate construction a novel E-Fenton system by magnetically decorating zero-valent iron (ZVI) onto RuO2-IrO2/Ti (ZVI-RuO2-IrO2/Ti) electrode for high-efficient treatment pharmaceutical wastewater, which is considerabl...

in this study, degradation of p-chlorophenol (p-cp) was evaluated using persulfate (ps) activated zerovalent iron (zvi) based ultraviolet (uv) in a bench scale photoreactor. the effect of operational parameters such as solution ph (3, 7, and 11), reaction time (0-60 minutes), zvi dosage (0.15, 1.25, 0.5, 1, and 1.5 mm), ps concentration (0.5, 1.5, 2, 2.5, 3, and 4 mm), and initial p-cp concentr...

The impacts of nanoparticles-zerovalent iron (NP-ZVI) on anaerobic co-digestion (AcoD) were assessed. production biogas and methane (CH4), as well the removal efficiency volatile solids (VS) contaminants investigated in AcoD chicken manure (CM) olive mill wastewater (OMWW) with addition NP-ZVI at different concentrations (10–50 mg/g VS) sizes resulting from various mixing volume ratios (MVR) Na...