agricultural waste biomass generated from agricultural production and food processing industry are abundant, such as durian  peel, mango peel, corn straw, rice bran, corn shell, potato peel and many more. due to low commercial value, these wastes are disposed in landfill, which if not managed properly may cause environmental problems. currently, environmental laws and regulations pertaining to ...

Waste printed circuit boards (PCBs) contain a large number of metals such as Cu, Sn, Pb, Cd, Cr, Zn, and Mn. In this work, an efficient and environmentally friendly process for metals recovery from waste PCBs by supercritical water (SCW) pre-treatment combined with acid leaching was developed. In the proposed process, waste PCBs were pre-treated by SCW, then the separated solid phase product wi...

The global outbreak of bovine spongiform encephalopathy (BSE) has been attributed to the recycling of contaminated meat and bone meals (MBMs) as feed supplements. The use of MBMs has been prohibited in many countries; however, the development of a method for inactivating BSE prions could enable the efficient and safe use of these products as an organic resource. Subcritical water (SCW), which i...

The attraction exerted by Biomphalaria glabrata infected with Angiostrongylus costaricensis on Schistosoma mansoni miracidia of the BH strain was tested, using a glass apparatus composed by two circular chambers connected to a channel. One mollusk or a sample of a snail conditioning water (SCW) was placed in one of the chambers, randomly selected, and the remaining of the apparatus was filled w...

This crossover study assessed the effectiveness of plain water (PW), sports drink (SD), fresh young coconut water (CW) and sodium-enriched fresh young coconut water (SCW) on whole body rehydration (R) and plasma volume (PV) restoration after exercise-induced dehydration. Ten healthy male subjects ran at 65% of VO2max in an environmental temperature of 32.06 +/- 0.02 degree C with a relative hum...

Technological scheme for the oxidation of organic wastes in SCW has been proposed. Mathematical models of all apparatuses in the scheme (heat exchangers, chemical reactor, separator) consider specific properties of chemical processes realized in supercritical water (alteration of heat capacity, enthalpy and critical parameters of mixture with changing pressure, temperature and composition). Non...

Plant cells biosynthesize primary cell walls (PCW) in all cells and produce secondary cell walls (SCWs) in specific cell types that conduct water and/or provide mechanical support, such as xylem vessels and fibers. The characteristic mechanical stiffness, chemical recalcitrance, and hydrophobic nature of SCWs result from the organization of SCW-specific biopolymers, i.e., highly ordered cellulo...

Methanol-assisted oxidation of organic compounds in supercritical water (SCW) is interest for wastewater treatment. To provide better predictive tools this process, it important to develop kinetic models. This paper investigated the kinetics methane and methane/methanol mixtures SCW. A detailed chemical model was established, drawing on analogy between chemistry SCW gas phase. The performance e...

Far-infrared (FIR) irradiation and subcritical water were applied for recovering antioxidant compounds from rice hulls (RHs). After 30 min of FIR treatment at 100°C, the radical scavenging activity (RSA) and total phenol contents (TPC) of RH extracts increased from 47.74% to 79.63% and from 0.12 mM to 0.19 mM, respectively, compared to control. The inhibition of lipid peroxidation in extracts w...