Supercritical fluids have different properties compared to regular fluids and could play a role as life-sustaining solvents on other worlds. Even on Earth, some bacterial species have been shown to be tolerant to supercritical fluids. The special properties of supercritical fluids, which include various types of selectivities (e.g., stereo-, regio-, and chemo-selectivity) have recently been rec...

Focus of the leather producing industry is the transformation of untreated skins that are brittle under dry conditions and may rot under wet conditions into durable, imperishable leather by processes which incorporate tanning agents into the hides. The traditional processes comprise a multitude of different steps (up to 70), are time-consuming and water intensive. An accrual of 20 to 40 t of wa...

The Huaguangjiao I is an ancient Chinese wooden shipwreck from the South Song Dynasty (AD 1127–1279) discovered in China Sea 1996. first phase of its conservation, desalination and desulfurization, was completed 2016. In this paper, three archaeological wood samples exhibiting different degrees deterioration No. 1 were consolidated with PEG-4000 dehydrated via freeze drying supercritical CO2 me...

Abstract The paper investigates applicability of two mathematical models developed by the authors for calculating process long-term impregnation coal samples. A distinctive feature studied samples is low porosity. Considered are based on single- and three-channel representation internal structure a porous medium. These were previously used to study highly materials. At same time, model in most ...