This paper describes a kinetic study of the decomposition of waste printed circuit boards (WPCB) under conventional and microwave-induced pyrolysis conditions. We discuss the heating rates and the influence of the pyrolysis on the thermal decomposition kinetics of WPCB. We find that the thermal degradation of WPCB in a controlled conventional thermogravimetric analyzer (TGA) occurred in the tem...

there is no single standard technique or methodology to characterize the size, structure, number, and chemical composition of airborne carbon nanotubes.  existing analytical instruments and analytical techniques for evaluating nanoparticle concentrations cannot simultaneously provide morphology, state of agglomeration, surface area, mass, size distribution and chemical composition data critical...

Botanical cotton trash mixed with lint reduces cotton’s marketability and appearance. During cotton harvesting, ginning, and processing, trash size reduction occurs, thus complicating its removal and identification. This trash causes problems by increasing ends down in yarn formation and thus processing efficiency. The Uster® High Volume Instrument (HVI) and Shirley Analyzer are extensively use...

This paper describes the application of innovative hydrothermal technology on local municipal solid waste (MSW) to produce low chlorine content solid co-firing fuel with coal. Raw MSW was treated at temperatures ranging from 210 to 235°C with 30 to 90 minutes holding period. The process yielded slump products which were then naturally dried to 5% moisture content, resulted in dry products with ...

The pathway of dehydration and intramolecular cyclization of lisinopril dihydrate in the solid state was investigated using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and a combination of thermal analyzer with Fourier transform infrared microspectroscopy (thermal FT-IR microscopic system). The results indicate that the dehydration from the solid-state lisinopril d...

A UV-curable, flame-retardant monomer, DAPP (bis[di-acryloyloxyethyl]-p-tert-butyl-phenyl-phosphate), was synthesized based on BPDCP (4-tert-butylphenyl-dichloro phosphate) and HEA (2-hydroxy ethyl acrylate). DAPP was blended with regular bisphenol A epoxy acrylate (BAEA) in various ratios to yield various phosphorus contents. The TGA-IR (thermogravimetric analyzer interface with an infrared sp...

The content of combustible elements in solid mineral fuels (carbon, hydrogen, etc.) are very important, since they most directly affect the heat value. It should be noted that fuel value depends on many other constituents, such as ash and moisture. In this paper, special attention has been paid to carbon content. fuels, is found alone or bound form various compounds. One them carbonate compound...

Carboxymethyl chitosan dialdehyde starch Schiff base (CMCDAS) and its metal complexes are synthesized by corn (St), sodium periodate, carboxymethyl chitosan, ions (copper, zinc, nickel, silver), characterized Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermogravimetric analyzer (TGA), energy dispersive (EDS), X-ray powder diffraction (XRD). The antibact...

Modeling the burning processes of biomass such as wood, grass, and crops is crucial for modeling prediction wildland urban fire behavior. Despite its importance, solid fuels remains poorly understood, which can be partly attributed to unknown chemical kinetics most fuels. Most available kinetic models were built upon expert knowledge, requires insights years experience. This work presents a fra...

In the present study, a set of hydrogels were synthesized using N-isopropylacrylamide with various cross linkers at dosages via free radical polymerization. Thermal and structural properties characterized thermogravimetric analyzer (TGA) Fourier Transformation Infrared Radiation (FTIR) spectroscopy. The effect crosslinkers such as N,N´-Methylenebisacrylamide, ethylene glycol dimethacrylate (EGD...