Reductive catalytic fractionation of biomass has recently emerged as a powerful lignin extraction and depolymerization method to produce monomeric aromatic oxygenates in high yields. Here, bifunctional molybdenum-based polyoxometalates supported on titania (POM/TiO2 ) are shown to promote tandem hydrodeoxygenation (HDO) and alkylation reactions, converting lignin-derived oxygenated aromatics in...

In this paper, a micro-fluidic optimized process for the continuous flow synthesis of azo compounds is presented. The continuous flow synthesis of Sudan II azo dye was used as a model reaction for the study. At found optimal azo coupling reaction temperature and pH an investigation of the optimum flow rates of the reactants for the diazotization and azo coupling reactions in Little Things Facto...

Recently, there has been a lot of interest in the utilization of rhodococci in the bioremediation of petroleum contaminated environments. This study investigates the response of Rhodococcus erythropolis IBBPo1 cells to 1% organic solvents (alkanes, aromatics). A combination of microbiology, biochemical, and molecular approaches were used to examine cell adaptation mechanisms likely to be pursue...

We present results of dynamic head-space collections and GC-MS analyses of floral and vegetative fragrances for 20 species in three genera of Nyctaginaceae: Acleisanthes, Mirabilis and Selinocarpus. Most of the species included in this study are either hawkmoth or noctuid moth-pollinated. A wide variety of compounds were observed, including mono- and sesquiterpenoids, aromatics (both benzenoids...

This field study evaluated the ability of a multi-sorbent sampling tube/thermal desorption technique to identify and to provide quantitative data on volatile organic contaminants in indoor air. Air samples, from 12 Canadian homes, were collected on multilayer sorbent cartridges and analyzed using Adsorption/Thermal Desorption coupled with Gas Chromatography/Mass Spectrometry. The study included...

This study is the first to provide a comprehensive characterization of liquid and volatile fractions whole goat milk powder (GMP). Robust nuclear magnetic resonance (NMR)- gas chromatography-mass spectrometry (GC-MS)-based chemical fingerprinting methods were optimized implemented. The untargeted 1H-NMR analysis resolved 44 metabolites in GMP. NMR technique effectively identified coming from al...

abstract aims: chemical precipitation is a simple, efficient, and cost-effective method for eliminating heavy metals found in landfill leachate. the aim of the present study was to compare the efficacy rates of cadmium removal with the coagulants like poly aluminum chloride and lime using chemical precipitation method. materials & methods: in this experimental study, the raw studied samples wer...

Trace gas emissions from municipal solid waste (MSW) landfills have received increasing attention in recent years. This paper reviews literature published between 1983 and 2019, focusing on (i) the origin fate of trace MSW landfills, (ii) sampling analytical techniques, (iii) quantitative emission measurement (iv) concentration surface rates common compounds at different landfill units (v) envi...

Model compounds were used to provide some chemical boundaries for the eight-fraction SAR-ADTM characterization method heavy oils. It was found that Saturates fraction consists of linear and highly cyclic alkanes; Aro-1 molecules with a single aromatic ring; Aro-2 mostly 2 3-ring fused molecules, pericondensed 4-ring molecule pyrene, 3–5 rings are not fused; Aro-3 4-membered catacondensed aromat...