Plastic pollution is ubiquitous in the environment, and nanoplastics (<1 μm) are of growing concern as they pose more health risks than larger particles. However, because of a lack of appropriate model particles, studies examining the risks of pol...
Chemical Engineering and Technology 46(2) 357-362 2023年2月 [査読有り]
Three different salt crystals (K2SO4, KCl, and Na2SO4·10H2O) were produced via batch cooling and continuous crystallization using a bench-scale crystallization device, in order to elucidate the mechanism of inclusion of the mother liquor as a func...
CHEMICAL ENGINEERING & TECHNOLOGY 45(5) 985-989 2022年5月 [査読有り]
Continuous crystallization via indirect cooling of potassium aluminum sulfate dodecahydrate (KAl(SO4)(2)center dot 12H(2)O) was carried out using a draft tube-type crystallizer with a circulation flow path. The crystallizer was equipped with a new...
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 55(4) 188-192 2022年4月 [査読有り]
To understand the inclusion of mother liquor in crystals at different sizes, the continuous crystallization of potassium sulfate was investigated. A bench-scale crystallizer of the draft-tube type was employed for both batch cooling and continuous...
JOURNAL OF CHEMICAL THERMODYNAMICS 165 2022年2月 [査読有り]
A new method for determining the liquidus and solidus pressures of mixtures of C18's unsaturated fatty acids at constant temperatures was proposed, and three binary isothermal SLE data under high-pressure were systematically measured in this study...
JOURNAL OF POLYMERS AND THE ENVIRONMENT 19(1) 209-216 2011年3月
The depolymerization reaction of polyethylene terephthalate (PET) was analyzed on the basis of both experimental data and numerical data obtained from quantum chemistry calculations. Various alcohols were used as solvents in the search for the rea...
Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010 2 525-529 2010年
The transesterification of triglycerides under various conditions was considered in terms of the activation energy obtained from molecular orbital method. The transesterification reaction is completed via a transition state, in which ring formatio...
The transesterification of various triglycerides was considered in terms of the activation energy obtained from quantum computational chemistry. According to these values, the effect upon the reactivity of the structure of the triglyceride is not ...
POLYMER DEGRADATION AND STABILITY 94(2) 240-245 2009年2月
The depolymerization reaction of polyethylene terephthalate (PET) was analyzed using a computational chemistry approach. The reaction is a type of transesterification reaction using alkoxide. In this study we employed the calculated optimum struct...