For the water remediation techniques based on adsorption, the long-standing contradictories between selectivity and multiple adsorbability, as well as between affinity and recyclability, have put it on weak defense amid more and more severe environment crisis. Here, a pollutant-targeting hydrogel scavenger is reported for water remediation with both high selectivity and multiple adsorbability f...

Previous paleoenvironmental studies reported the dD values of a mixture of coeluting alkenones. Here, we present a semi-preparative normal-phase high-performance liquid chromatography–mass spectrometry (NP-HPLC–MS) method for purifying long chain (C37 and C38) unsaturated methyl and ethyl ketones (alkenones) on the basis of chain length and degree of unsaturation. The method was applied to puri...

Increasing demand for methanol production and global competition the use of natural resources are key issues in finding new environmentally routes production. In this work, life cycle assessment was performed using software SimaPro v9 to analyze environmental impact process from olive pomace compare with gas route. The main stages considered were production, oil extraction, addition, turn can b...

bisphenol a, 2,2-bis(4,4-dihyroxyphenyl propane) is the raw material for the production of important synthetic polymers such as epoxyresins, polycarbonates and polysulphones. during the last twenty years the anual production of bisphenol-a has been continuously increasing. a,b,c cqrves shows the consumption pattern of bisphenol-a (19601972) • epoxy resins are used for the production of adhessiv...

A modified Scheffe's simplex lattice design method is proposed to study the properties of multicomponent materials. This allowed determining optimal compositions cordierite and corundum based ceramic materials that are used as catalyst carrier for gas purification equipment. The obtained material (0.63-1.25 mm weight fraction 0.35 mass% fraction; < 0.63 0.06 0.2 1.25-2.5 fraction) was succes...

The microalgae are unicellular photosynthetic organisms that use light energy and carbon dioxide, with higher photosynthetic efficiency than plants for the production of biomass (Benemann 1997, Miao, Wu, 2006). Microalgal lipids are regarded as the feedstock of future sustainable biodiesel production owing to much higher growth rates and photosynthetic efficiencies than conventional terrestrial...

Abstract The feasibility of biphenyl hydrogenation with syngas for hydrogen purification and binding the aim its transportation was demonstrated. Specific features as a promising organic carrier using unsupported Ni–Mo sulfide catalysts were studied. In particular, influence temperature, reaction time, presence water in system, Н 2 /СО gas mixture composition on substrate conversion selectivity...

Landfill gas (LFG) that is generated in an anaerobic environment in landfills and consists primarily of methane and carbondioxide with small amount of nitrogen and other non-methane gases, could be collected and used to produce energy either by extracting methane or using the landfill gas directly in an internal combustion engine or a gas turbine. It amounts to be a net-negative greenhouse gas ...

Benzyl Alcohol Dehydrogenase (BADH) is an important enzyme for hydrocarbon degradation, which can oxidize benzyl alcohols to aldehydes, while being capable of catalyzing a reversible reaction by reducing benzaldehyde. BADH is a member of medium chain alcohol dehydrogenases, in which zinc and NAD are essential for enzyme activity. This paper describes the expression, purification, and characteri...