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Wood and forest products First Second Third Fourth Fifth Wood fuel 1 India Brazil Ethiopia Democratic Republic of the Congo China: Sawnwood 2 United States China Russia Canada Germany: Wood-based panels 3 China United States Russia India Turkey: Paper and Paperboard 4 China United States Japan Germany India: Dissolving wood pulp 5
The kraft process (also known as kraft pulping or sulfate process) is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibres, the main component of paper. The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white ...
Pulpwood can be defined as timber that is ground and processed into a fibrous pulp. It is a versatile natural resource commonly used for paper-making but also made into low-grade wood and used for chips, energy, pellets, and engineered products.
In 2009, NBSK pulp sold for $650/ton in the United States. The price had dropped due to falling demand when newspapers reduced their size, in part, as a result of the recession. [42] By 2024 this price had recovered to $1315/ton. [43]
A typical refiner pulp can require 2000 kWh/mass ton pulp. [1] A larger mechanical pulp and paper mill can, including the paper production, consume 200-300 MW electricity. The chemical pulping processes can often generate enough energy (steam and electricity) to make the mill energy self-sufficient.
A pulp mill in Rauma, Finland Woodchips for paper production. A pulp mill is a manufacturing facility that converts wood chips or other plant fiber sources into a thick fiber board which can be shipped to a paper mill for further processing. Pulp can be manufactured using mechanical, semi-chemical, or fully chemical methods (kraft and sulfite ...
The pulp and paper industry consumes a significant amount of water and energy and produces wastewater with a high concentration of chemical oxygen demand (COD), among other contaminants. [14] Recent studies underline coagulation as an appropriate pre-treatment of pulp and paper industrial wastewater and as a cost-effective solution for the ...
Wood is relatively light in weight, because its specific weight is less than 500 kg/m 3, this is an advantage, when compared against 2,000–2,500 kg/m 3 for reinforced concrete or 7,800 kg/m 3 for steel. [citation needed] Wood is strong, because the efficiency of wood for structural purposes has qualities that are similar to steel. [citation ...