Notes

Ultrathin Two dimensional NbWO6 Perovskite Semiconductor dependent Gas Sensors together with Ultrahigh Selectivity below Lower Functioning Temperatures.
Moreover, DEHA is continuously hydrolyzed into its primary metabolite MEHA (monoethylhexyladipate), which may reach cytotoxic level in the patients' blood. When looking from a « safer » MD perspective, DEHA might not be the best alternative plasticizer for CVVH tubings. However, to reflect clinical conditions, this study should be completed by an in-vivo evaluation (biomonitoring) of the oxidized metabolites of DEHA in urines of inpatients undergoing CVVH. The influence of the soluble substrates over the anaerobic processes has been extensively investigated, but little is known about the effects of particulate substrate. The biodegradation of these substrates starts with the hydrolytic step, this process is slower than the other ones involved in the biodegradation of particulate substrates and usually becomes the rate-limiting step. This study investigate the effect of the initial total solids (TS) concentration on the anaerobic co-digestion of two slowly biodegradable organic substrates. The wastes mixtures were prepared at different dilutions in the range from 10% to 28% TS. From these experiments it was observed that as TS concentration increased, the methane production decreased. These results were modelled and it was observed that neither hydrolysis nor fermentation stages controlled the methane production rate. Being a substrate inhibition event experienced at the methanogenic stage the responsible of the lower methane production when operating at high TS concentrations. Ionic liquids (ILs (1-butyl-3-methylimidazolium chloride ([C4mim][Cl]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([C4mim][BF4]))) were used as heat transfer fluids for solar thermal collectors. The additive of ILs was biochar containing copper and silver nanoparticles (Cu-Ag/biochar) to improve the adsorption of solar irradiation and thermal conductivities. After impregnation and reduction processes, nanoparticles such as Cu, CuO, Cu(OH)2, Ag, and Ag2O were found in the biochar by X-ray powder diffraction (XRD) spectroscopy. With adding 2% Cu-Ag/biochar into the ILs, the thermal conductivities of [C4mim][Cl] and [C4mim][BF4] containing 10% Cu-1% Ag/biochar were individually increased 9.2 and 6.6 times compared to the base ILs due to the high graphitization of biochar and metallic nanoparticles. The 1H NMR (nuclear magnetic resonance) features of the imidazole ring and methyl group in the ILs were highly disturbed due to the formation of weak or strong hydrogen bonds between the cations in ILs and Cu-Ag/biochar. The high hydrogen bond acceptance of anions in ILs also affected the thermal properties. The thermal properties of the metals/biochar [C4mim][Cl] were better than those of metals/biochar [C4mim][BF4] due to high hydrogen bond acceptance of [Cl]-. The strong hydrogen bonds between the Cu-Ag/biochar and the cations and anions in ILs result in thermal properties of heat transfer fluids. Under simulated sunlight, the temperatures of [C4mim][Cl] and [C4mim][BF4] containing 10% Cu-1% Ag/biochar rose from 304 to 345 and 340 K within 24 min, respectively. A novel heat transfer fluid was developed for high adsorption of irradiation, high thermal conductivities, and speedy transfer of heat. Wastewaters containing recalcitrant and toxic organic pollutants are scarcely decontaminated in conventional wastewater facilities. Then, there is an urgent challenge the development of powerful oxidation processes to ensure their organic removal in order to preserve the water quality in the environment. This review presents the recent development of an electrochemical advanced oxidation process (EAOP) like the photoelectro-Fenton (PEF) process, covering the period 2010-2019, as an effective treatment for wastewater remediation. The high oxidation ability of this photo-assisted Fenton-based EAOP is due to the combination of in situ generated hydroxyl radicals and the photolytic action of UV or sunlight irradiation over the treated wastewater. Firstly, the fundamentals and characteristics of the PEF process are described to understand the role of oxidizing agents. Further, the properties of the homogeneous PEF process with iron catalyst and UV irradiation and the benefit of sunlight in the homogeneous solar PEF one (SPEF) are discussed, supported with examples over their application to the degradation and mineralization of synthetic solutions of industrial chemicals, herbicides, dyes and pharmaceuticals, as well as real wastewaters. Novel heterogeneous PEF processes involving solid iron catalysts or iron-modified cathodes are subsequently detailed. Finally, the oxidation power of hybrid processes including photocatalysis/PEF, solar photocatalysis/SPEF, photoelectrocatalysis/PEF and solar photoelectrocatalysis/SPEF, followed by that of sequential processes like electrocoagulation/PEF and biological oxidation coupled to SPEF, are analyzed. Pyrolysis temperature is one of the important factors that affect the structure and composition of biochar-derived dissolved organic matter (DOM), which may impact interaction between biochar-derived DOM and Cu(II). check details Moreover, soil application of biochars pyrolyzed at different temperatures is supposed to cause different complexation behaviors between soils-derived DOM and Cu(II). However, little is known about these aspects. Here, incubation experiments and quenching titration experiments were conducted to explore such pyrolysis temperatures-dependent changes in sludge and sludge-based biochars (SSBA). Two-dimension correlation spectroscopy (2D-COS) indicated humic-like fraction had stronger affinities with Cu(II) in DOM from both sewage sludge (SS) and 500 °C sludge-based biochars (SSB5) while protein-like fraction showed the fastest response to Cu(II) binding in DOM from 300 °C sludge-based biochars (SSB3). One protein-like substance (Component 1) and two humic-like substances (Component 2 and 3) were identified in the DOM derived from SSBA through excitation-emission matrix-parallel factor (EEM-PARAFAC) analysis. Moreover, the Cu(II) complexation affinities of component 1, 2 and 3 decreased from 4.43, 4.53 and 4.86 to 3.26, 3.50 and 3.39 with increasing pyrolysis temperatures, respectively. The addition of 10% SS evidently increased the complexation affinities of humic-like substances in soil-derived DOM from 4.43 to 4.68 to 4.60-6.86, while the complexation affinities of humic-like substances decreased from 4.52 to 4.78 to 3.82-4.50 at a 10% amendment of sludge-based biochars. Compared with sewage sludge, agricultural soil amended with 10% sludge-based biochars had better performance in the aspect of Cu(II) mobility, but had weaker detoxication effect on Cu(II).
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