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Lignin products, color problem

Their natural source of production is om the degradation of lignin (31,32) and sofl humic polymers. In nature, humic substances are by-products of lignin. Ligninand humic substances are compile aromatic polymers that constitute a major fraction of organic compounds in natural water and their presence in the wastewaters has been a problem fricii the water industry. The yellow to brown color of natural water is mainly due to the probI n of aquatic humic acids. Some of the nnportant characterisdes exhibited by all humic fractions are their resistance to microbial (gradation, and the... [Pg.26]

See other pages where Lignin products, color problem is mentioned: [Pg.1]    [Pg.248]    [Pg.324]    [Pg.453]    [Pg.228]    [Pg.481]    [Pg.470]    [Pg.75]    [Pg.290]    [Pg.896]    [Pg.116]   
See also in sourсe #XX -- [ Pg.436 ]

See also in sourсe #XX -- [ Pg.436 ]



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