STUDY ON EFFECTS OF MODIFIED SULFITE SPENT LIQUOR UPON SANDY SOIL STRUCTURE
STUDY ON EFFECTS OF MODIFIED SULFITE SPENT LIQUOR UPON SANDY SOIL STRUCTURE
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发表时间：
2003
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通讯作者：
Li Jian
中科院分区：
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作者：
Li Jian
采用木质素磺酸盐与丙烯酸（AA）和丙烯酰胺（AM）接枝共聚改性甘蔗渣亚硫酸盐废液（SSL），研究了SSL及其不同改性产物对桑迪结构的影响。在0.2%的施用量下，SSL及其不同改性产物对土壤稳定性团聚体干含量的影响是：（1）SSL及其不同改性产物对土壤稳定性团聚体干含量的影响是：（2）SSL及其不同改性产物对土壤稳定性团聚体干含量的影响是：（1）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（2）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（1）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（2）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（1）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（2）SSL及其改性产物对土壤稳定性团聚体干含量的影响是：（1）SSL在桑迪土样中，AA和AM改性产物对0.25 mm COAs的去除率分别为49.4%和48.9%，对湿态COA的去除率分别为38.1%和39.9%。对聚合物在桑迪中的作用机理进行了综述，认为在干燥状态下，阴离子基团与砂粒的结合力强于非阴离子基团，聚合物与桑迪之间可能存在粘附作用。
Spent sulfite liquor(SSL) from bagasse pulping was modified by graft copolymerization of acrylic acid(AA) and/or acrylamide(AM) onto lignosulfonate.Effects of SSL and different modified products upon sandy soil structure were studied.At the application rate of 0.2%,the dry contents of stable aggregates(0.25 mm,COAs) in sandy soil samples treated with AA and AM modified products were 49.4% and 48.9%,and wet COAs were 38.1% and 39.9%,respectively.Among the products modified with both monomers,the product with AA/AM ratio of 20/80 had the best performance on improving structure of sandy soil.The acting mechanisms of polymer on soils were reviewed.It was suggested that,at dry status the bonding of anionic groups onto sand grains was stronger than that of nonionic groups,and there might be adhesion between polymers and sandy soils.