delignification
Extracting plant polymer
Delignification is the removal of lignin from plant material.
Lignin is the compound that gives wood its rigidity and strength.
The process is central to papermaking, where wood pulp must be stripped of lignin to produce white paper: The kraft process achieves delignification through chemical treatment.
Soft wet mass
- acid-freeLacking corrosive compounds
- permanenceQuality of lasting indefinitely
- archivalOf preserved documents
- newsprintLow-grade printing paper
Strong unbleached paper
- sulfiteSO3 compound, preservative use
- cellulosePlant wall polysaccharide
- fibersThreadlike structural strands
- woodchipsShredded timber fragments
digestion · cooking · alkaline · acidic · soda · batch · continuous · pulp mill
Biomass conversion facility
- pretreatmentPreparatory processing step
- fermentationMicrobial sugar conversion
- biofuelsFuel from living matter
- bioethanolFuel from fermented plants
Oxidizing disinfectant gas
- ozoneTriatomic oxygen allotrope
- chelationChemical metal-ion capture
- brightnessDegree of light emitted
- whitenessState of being pale
multistage · chlorination · hypochlorite · washing · filtrate · effluent
Microbial breakdown of organics
- decayGradual organic breakdown
- rotOrganic breakdown process
- fungiSpore-reproducing decomposers
- bacteriaNucleus-free single-celled organisms
decomposers · humus · soil · carbon cycle · organic matter · forest floor · brown rot · white rot
pulp
Soft wet mass
- acid-freeLacking corrosive compounds
- permanenceQuality of lasting indefinitely
- archivalOf preserved documents
kraft
Strong unbleached paper
- sulfiteSO3 compound, preservative use
- cellulosePlant wall polysaccharide
- fibersThreadlike structural strands
woodchips · digestion · cooking · alkaline · acidic · soda · batch · continuous · pulp mill · hydrolysis
biorefinery
Biomass conversion facility
- pretreatmentPreparatory processing step
- fermentationMicrobial sugar conversion
- biofuelsFuel from living matter
chlorine dioxide
Oxidizing disinfectant gas
- ozoneTriatomic oxygen allotrope
- chelationChemical metal-ion capture
- brightnessDegree of light emitted
whiteness · multistage · chlorination · hypochlorite · washing · filtrate · effluent
biodegradation
Microbial breakdown of organics
bacteria · decomposers · humus · soil · carbon cycle · organic matter · forest floor · brown rot · white rot · soft rot
- Ligninpulping
- pulp processingpulp, mechanical pulping, digesting, digesters, white liquor
- wood productssawdust, wood chips, wood pulp, plywood, lumber