Effect of Coniferyl Alcohol Addition on Removal of Lignin from Paper Mill Effluent by Laccase
Laccase is a kind of powerful enzyme that is promising in pulping and papermaking industry,because it can catalyze and oxidize lignin.It has been proved that soluble iignin and its derivatives were able to be degraded,or polymerized,and removed by complete oxidation through treatment with laccase followed by coagulation.Utilizing laccase to treat wastewater ofpapermaking has high efficiency.Its merit includes mild reaction condition and simple equipment and so on.In this paper,a novel wastewater treatment system which consists of coniferyl alcohol and a laccase catalyzer was developed.When coniferyl alcohol was added,it was found to polymerize with water soluble lignin.Thus the system produced high molecule hydrophobic lignin polymers.The experiment showed that the addition of coniferyl alcohol could remove soluble iignin and its derivatives in the wastewater effectively under the existence of iaccase.The result showed that the optimal treatment conditions were as follows: coniferyl alcohol dosage 0.0788 g/L; laccase consumption 14.72 IU/L; temperature 25℃; reaction time 1h.The removal ratio for lignin reached 80％,for CODCr51.9％,and for chroma 84.8％.
laccase coniferyl alcohol effluent polymerization chroma removal
WANG SONG XIE YIMIN YUE JUAN WANG PENG
Shandong Provincial Key Lab of Paper Science and Technology,Shangdong Institute of Light Industry,Ji Putian Institute of Supervision & Testing on Product Quality,Putian,Fujian,351100,China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
1055-1058
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）