摘要
本法用酸水解炭化、ZnCl_2活化法处理草浆造纸黑液生产活性炭.结果表明,由7—8Be的草浆黑液1L可制20g左右的活性炭.活性炭的碘值>1000mg/g,亚甲基兰值>180ml/g,其主要指标已超过我国LY216-79和日本JIS K1426标准一级品的要求.提取活性炭后,黑液中COD_(Cr)去除率达72％,色度去除率达93％.残液还可作提取Na_2SO_4、糠醛的原料.
An experimental study on the production of activated carbon from straw pulp and paper black liquor by acid hydrolysis carbonization and ZnCl2 activation was curried out. Results show that about twenty grams of activated carbon can be obtained from a litre of 7-8 Be straw pulp and paper black liquor. The iodine number and methylene blue of the activated carbon thus produced are higher than 1000 mg/g and 180 ml/g, respectively. The main quality indices of the product are better than those of LY216-79 produced in China and JIS 1426 Grade 1 produced in Japan. After removal of the activated carbon, the CODcr in the liquor reduced by 72%, and the colority reduced by 93%. The residual liquor can be used for preparing Na2SO4 and furfural.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1991年第5期42-46,共5页
Environmental Science
关键词
活性炭
草浆造纸
黑液
activated carbon, straw pulp and paper black liquor.
