Treatment of black liquor from the papermaking industry by acidification and reuse.
Two different kinds of black liquor from the papermaking industry were treated by acidification and reuse. The experimental parameters and conditions were discussed in detail. The experimental results indicated that the treatment process mentioned in this article is an effective process for the treatment of black liquor from the papermaking industry. By the treatment, the solid materials in black liquor are transferred into two by-products and the other components are reused or evaporated. Thus, no wastewater except some condensation water would be discharged in pulping process and the problem of pollution of black liquor would be effectively solved.
Yang
Wen-Bo
WB
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. yangwb@mail.rcees.ac.cn
Mu
Huan-Zhen
HZ
Huang
Yan-Chu
YC
D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000517:prevention & control*; D008031:Lignin / Q000378:metabolism; D010209:Paper; D013458:Sulfur Dioxide / Q000737:chemistry*; D013464:Sulfuric Acids / Q000378:metabolism*; D018505:Waste Management / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007220:Industrial Waste; D013464:Sulfuric Acids; D014874:Water Pollutants, Chemical; D013458:Sulfur Dioxide; D008031:Lignin; C033158:sulfuric acid