Brazil’s large biofuels industry generates significant amounts of effluents, e.g., vinasse from bioethanol, that can effectively be used as substrate for production biogas via Anaerobic Digestion (AD). The Oxidative Coupling Methane (OCM) is the heterogeneous catalytic oxidation methane into ethylene, which a main building block chemical industry. This work investigates potential and competitiv...

Non-oxidative coupling of methane is a promising route to obtain ethylene directly from natural gas. We synthesized siliceous [Fe]zeolites with MFI and CHA topologies found that they display high selectivity (>90 % for >99 CHA) ethane among gas-phase products. Deactivated can be regenerated by burning coke in air. In situ X-ray absorption spectroscopy demonstrates the isolated Fe3+ centers zeol...

The horizontal-tube, falling film heat exchanger has advantages over flooded bundles and finds widely use in vaporcompression and absorption systems for air-conditioning and refrigeration. The effects of the liquid feeding temperature on inter-tube falling-film heat transfer behavior are investigated experimentally for distilled water, pure ethylene glycol and Dowtherm 4000. It is found that th...

Oxametallacycles have been previously grafted onto Ag(110) by adsorbing 2-iodoethanol to mimic possible intermediates in the catalytic epoxidation of ethylene. Since Ag(111) has been shown to be a good model catalyst for this reaction under realistic pressures of ethylene and oxygen, this work was extended to studying the chemistry of 2-iodoethanol on Ag(111) using temperature-programmed desorp...

the sequencing batch reactors were developed to treat the actual wastewater from ethyleneglycol/ethylene oxide producing industry. four identical reactors with total and effective liquid volumes of 9and 7 l were operated respectively in parallel. laboratory experiments were conducted with different organicloadings of 500, 1000, 1500 and 3000 g-cod/m3.day and the performance of the reactors was ...

The electronic absorption spectra of oxidized and reduced spinach ferredoxins have been measured between 1200 and 600 nm at low temperature in D(2)O/ethylene glycol glasses. Relatively weak absorption bands are observed at 720, 820, and 920 nm in oxidized ferredoxin, and at 652, 820, and 920 nm in reduced ferredoxin. The spectral results show that the two Fe(III) centers in oxidized ferredoxin ...

Alkyl cellosolves include ethylene glycol monomethylether, ethylene glycol monoethylether, ethylene glycol monobuthylether. And their urine metabolites are methoxyacetic acid, ethoxyacetic acid and butoxyacetic acid. The current analytical method for urinary alkoxyacetic acid is liquid-liquid phase extraction. But the liquid-liquid phase extraction method needs a more complex pre-treatment proc...