page_title: Kraft process
hierarchical_section_title: Kraft process
caption_attribution_description: International Paper Company, on the Sampit River, Georgetown, SC
context_page_description: The kraft process is a process for conversion of wood into wood pulp, which consists of almost pure cellulose fibers, the main component of paper. The kraft process entails treatment of wood chips with a hot mixture of water, sodium hydroxide, and sodium sulfide, known as white liquor, that breaks the bonds that link lignin, hemicellulose, and cellulose. The technology entails several steps, both mechanical and chemical. It is the dominant method for producing paper. In some situations, the process has been controversial because kraft plants can release odorous products and in some situations produce substantial liquid wastes.
context_section_description: 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 fibers, the main component of paper. The kraft process entails treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na₂S), known as white liquor, that breaks the bonds that link lignin, hemicellulose, and cellulose.  The technology entails several steps, both mechanical and chemical.  It is the dominant method for producing paper.  In some situations, the process has been controversial because kraft plants can release odorous products and in some situations produce substantial liquid wastes.
caption: International Paper: Kraft paper mill
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