Search results
Results from the WOW.Com Content Network
Apart from structural wood preservation measures, there are a number of different chemical preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend the life of wood, timber, and their associated products, including engineered wood. These generally increase the durability and resistance ...
In 1658, Johann Rudolf Glauber outlined the methods to produce wood vinegar during charcoal making. [2] Further, he described the use of the water insoluble tar fraction as a wood preservative and documented the freezing of the wood vinegar to concentrate it. Use of the term "pyroligneous acid" for wood vinegar emerged by 1788.
An example of the conservation of wood and how it has changed over time can be illustrated by the conservation treatments of a Kefermarkt altar. The earliest attempt at wood conservation is recorded as late as 1852–1855, A. Stifter treated the Kefermarkt altar in Austria with table salt in an attempt to protect the wood against pests.
Daniel Acker/Bloomberg via Getty Images By Ankit Ajmera Lumber Liquidators (LL), facing U.S. government probes over claims of dangerous levels of a cancer-causing substance in its flooring ...
Pyrolysis can also be used to treat municipal solid waste and plastic waste. [ 4 ] [ 17 ] [ 72 ] The main advantage is the reduction in volume of the waste. In principle, pyrolysis will regenerate the monomers (precursors) to the polymers that are treated, but in practice the process is neither a clean nor an economically competitive source of ...
Wood-dust concentrations vary with type of dust extraction, amount of wood removed, and type of sander (Thorpe and Brown 1994). [2] For electric belt sanders used to sand dowels , total dust concentrations ranged from 0.22 mg/m with external dust extraction to 3.74 mg/m without extraction, and concentrations of respirable dust ranged from 0.003 ...
The good news: Those tannins can be removed by boiling or soaking acorns in water, which then makes them safe to eat, Shelley Balls, a registered dietitian and nutritionist for Consumer Health ...
The acid was used as a substitute for vinegar. It was also used topically for treating wounds, ulcers and other ailments. A salt can be made by neutralizing the acid with a lye made from the ashes of the burnt wood. [5] During the United States Civil War it became increasingly difficult for the Confederate States of America to obtain much ...