A mathematical model for evaporation of water from a urea-water-solution (UWS) droplet and subsequent decomposition of urea, including a semi-detailed kinetic scheme for byproduct formation, was developed. The model provided a good description of experimental water evaporation rates from UWS droplets, but generally underestimated the urea decomposi...
A mathematical model for evaporation of water from a urea-water-solution (UWS) droplet and subsequent decomposition of urea, including a semi-detailed kinetic scheme for byproduct formation, was developed. The model provided a good description of experimental water evaporation rates from UWS droplets, but generally underestimated the urea decomposi...
A seeded vacuum membrane distillation crystallization (VMDC) process for treating magnesium sulfate solution was proposed. The permeate flux was investigated with respect to feed inlet temperature, vacuum pressure and feed velocity in order to determine operating conditions of VMDC. For the VMDC, the inlet and outlet temperatures of membrane distil...
A seeded vacuum membrane distillation crystallization (VMDC) process for treating magnesium sulfate solution was proposed. The permeate flux was investigated with respect to feed inlet temperature, vacuum pressure and feed velocity in order to determine operating conditions of VMDC. For the VMDC, the inlet and outlet temperatures of membrane distil...
A kinetic model for urea decomposition and byproduct formation was developed and validated against thermogravimetric analyses (TGA) of urea and urea-derived byproducts, including biuret and cyanuric acid, at heating rates up to 500 degrees C/min. The model provided a good description of urea decomposition at all investigated heating rates. The resu...
A kinetic model for urea decomposition and byproduct formation was developed and validated against thermogravimetric analyses (TGA) of urea and urea-derived byproducts, including biuret and cyanuric acid, at heating rates up to 500 degrees C/min. The model provided a good description of urea decomposition at all investigated heating rates. The resu...
Sustainable green energy technologies have paid much attention to the development of a solar-driven seawater desalination technique due to its ecofriendly and efficient desalination performance. We propose a novel hybrid hydrogel consisting of conducting polymer of polypyrrole (PPy) and polyvalent cations crosslinked alginate (Alg) with strong repu...
A protohistoric (c.10th–5th c. BC) briquetage site at Puntone (Tuscany, Italy) was studied to unravel the salt production processes and materials involved. Geophysical surveys were used to identify kilns, pits, and dumps. One of these pits and a dump were excavated, followed by detailed chemical and physical analyses of the materials encountered. T...
Evaporative self-assembly of semiconducting polymers is a low-cost route to fabricating micrometer and nanoscale features for use in organic and flexible electronic devices. However, in most cases, rate is limited by the kinetics of solvent evaporation, and it is challenging to achieve uniformity over length- and time-scales that are compelling for...
