Lignin based controlled release coatings

Mulder, W.; Gosselink, R.J.A.; Vingerhoeds, Monique H.; Harmsen, P.F.H.; Eastham, D. R.

doi:10.1016/j.indcrop.2011.02.011

Cited by 171 publications

(96 citation statements)

References 13 publications

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“…These films are based on cellulose nanocrystals 3-20 nm in width and 100 nm-2 lm in length that depend on their biological origin and are composed of linear chains of high molecular weight cellobiose, which are stabilized with numerous hydrogen bonds to obtain a highly crystalline polymer [38,39]. However, few coatings or nanocomposite films based on industrial lignins (e.g., lignosulfates, kraft lignin and acetylated lignin) containing cellulose fibers, its commercial derivatives, or noncellulosic polysaccharides have been developed [40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Organosolv lignin as natural grafting additive to improve the water resistance of films using cellulose nanocrystals

Hambardzumyan

Foulon

Bercu

et al. 2015

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Organosolv lignin as natural grafting additive to improve the water resistance of films using cellulose nanocrystals

Hambardzumyan

Foulon

Bercu

et al. 2015

Chemical Engineering Journal

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“…It is used in dye dispersants, dispersants for crop protection products, to produce low molecular weight chemicals like dimethyl sulphoxide. It is also used as filler in inks, varnishes and paints (Belgacem et al, 2003) and as a dispersing agent in concrete, as binders for wood composites, chelating agents, for treating porous materials, in coatings and paintings (Stewart , 2008;Park et al, 2008;Mulder et al, 2011).…”

Section: Ligninmentioning

confidence: 99%

Renewable resources in corrosion resistance

Sharmin¹,

Ahmad²,

Zafar³

2012

Corrosion Resistance

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“…To reduce nitrogen release, hydrophobic compounds and crosslinkers were added to the soda flax lignin dispersions. However, complete release of nitrogen still occurred within 1 h (Mulder et al 2011).…”

Section: Introductionmentioning

confidence: 97%

Utilization of waste lignin to prepare controlled-slow release urea

Behin

Sadeghi

2016

Int J Recycl Org Waste Agricult

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Purpose The present work reports an economically attractive improvement in the area of producing particulate slow release nitrogen fertilizer using lignin as a waste effluent of pulp and paper manufacturing process. Methods An improved coating of modified lignin was applied on the surfaces of the individual urea particles. The Kraft and Sulfite black liquors obtained from two different paper pulping units and were used as sources of sulfate and sulfite lignin, respectively. Chemical modification of extracted lignin was performed through acetylation reaction by acetic acid/sodium metabisulfite to increase its hydrophobicity character. In a separate experiment, a thin layer of synthesized acetylated lignin was coated on granular urea by fluidized-bed technique. The nitrogen release of synthesized fertilizer in the water and soil was examined by the Kjeldahl method. Results The analysis of FTIR spectra indicated the changes in the functional groups of acetylated lignin. Petrographic photography and scanning electron microscopy (SEM) analyses demonstrated a uniform and homogeneous covering of the urea surface. The 7 day nitrogen release rate of urea coated by acetylated lignin in soil was obtained 36.3 and 45.3 % for Kraft and Sulfite lignin, respectively, whereas this value was 59 % for sulfur coated urea. Conclusions Using industrial wastewater as source of lignin gives satisfactory results for industrial applications and yields a quality green fertilizer product with reduced operation difficulties while considerably preserving the environment.Keywords Controlled release fertilizer Á Fluidized-bed coating Á Kraft and sulfite liquor Á Modified lignin coated urea Abbreviations CRF Controlled-release fertilizers FTIR Fourier transform infrared SCU Sulfur coated urea SEM Scanning electron microscopy

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Lignin based controlled release coatings

Cited by 171 publications

References 13 publications

Organosolv lignin as natural grafting additive to improve the water resistance of films using cellulose nanocrystals

Organosolv lignin as natural grafting additive to improve the water resistance of films using cellulose nanocrystals

Renewable resources in corrosion resistance

Utilization of waste lignin to prepare controlled-slow release urea

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