Amorphophallus konjac fresh tubers are often used as a raw material for making food because it has fairly high nutritional content. Therefore, is very important to measure the equilibrium moisture content of andprocessed tuber. The present study aimed determine best model represent adsorption and desorption isotherms tuber slices. samples weresliced into slices (3.0 × 3.0 0.8 cm) rinsed in 0.2%...

a novel composite adsorbent, silica aerogel activated carbon was synthesized by sol-gel process atambient pressure drying method. the composite was characterized by fourier transform infraredspectroscopy (ft-ir), scanning electron microscopy (sem), differential scanning calorimetry(dsc) and nitrogen adsorption / desorption isotherms (bet).in the present study, the mentioned adsorbent was used m...

In  this  study,  amino  functional  groups  were  chemically  bonded  to  the  surface  of  newly synthesized  KIT-6  mesoporous  magnetite  nanoparticles  (MMNPs)  by  post-toluene  reflux synthesis method.  This method  treats  calcined mesoporous  nanoparticles with  the  functional organosilanes.  Physical  and  chemical  structures  of  the  synthesized  mesoporous  magnetite nanoparticle...

We discuss the thermodynamics of physical adsorption of gases in porous solids. The measurement of the amount of gas adsorbed in a solid requires specialized volumetric and gravimetric techniques based upon the concept of the surface excess. Excess adsorption isotherms provide thermodynamic information about the gas-solid system but are difficult to interpret at high pressure because of peculia...

Batch experiments were carried out to investigate the effects of initial atrazine concentrations and consecutive desorption steps on the desorption characteristics of atrazine from a sandy loam soil. As initial atrazine concentration increased, the average percentage of atrazine desorption on the sandy loam soil ranged gradually from 23.1% to 38.5% after five consecutive desorption steps. The v...

Abstract The current study aimed to investigate the CO 2 adsorption isotherms of activated carbon (AC), prepared from olive waste via chemical activation by H 3 PO 4 . textural parameters, microstructural and morphological characterization AC were characterized N2 adsorption-desorption, SEM XRD. presented best properties with a BET surface area 1565 m g −1 micropore volume 0.649 cm was measured...

Previous studies have indicated that dissolved-phase metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(methoxy-1-methylethyl) acetamide] transported in surface runoff is retained by vegetative filter strips to a greater degree than either metolachlor oxanilic acid 12-[(2-ethyl-6-methylphenyl) (2-methoxy-1-methylethyl)amino]-2-oxo-acetic acid] (OA) or metolachlor ethanesulfonic acid [2-[(2-eth...

A hybrid nanocomposite material has been obtained by in situ formation of an inorganic network in the presence of a preformed organic polymer. Chitosan biopolymer and tetraethoxysilane (TEOS), which is the most common silica precursor, were used for the sol-gel reaction. The obtained composite chitosan-silica material has been characterized by physicochemical methods such as differential therma...

We have developed a new grand canonical molecular dynamics (GCMD) algorithm to study microwave (MW) heating effects on competitive mixture sorption and have applied the method to methanol and benzene in silicalite zeolite. The new algorithm combines MW-driven molecular dynamics with grand canonical Monte Carlo (GCMC), the latter modeling adsorption/desorption processes. We established the valid...