改性木质素磺酸盐固沙剂的性能及应用研究

STUDY ON PERFORMANCE AND APPLICATION OF SANDY-SOIL STABILIZER FROM MODIFIED LIGNOSULFONATES

土地荒漠化是当今世界面临的最大环境问题之一,化学防治技术是荒漠化治理的一种 主要途径,其优点是成本低,见效快,施工简便。本研究制备并测试了两种代号为PALS、PMLS 的固沙剂,它们是经过对造纸工业副产品木质素磺酸盐接枝改性得到的,既有助于解决造纸企 业的污染问题,又达到了防沙治沙的目的。室内实验以及现场应用实验结果表明,该两种固沙 剂具有较高的抗压强度,较好的抗冻融、耐老化、抗风蚀、抗水蚀等优秀性能,在乌兰布和沙漠的现场实验中, 固沙效果明显,固沙成本仅为市售阴离子型聚丙烯酰胺(APAM)产品的70％。

Desertification is one of the most severe environmental and social problems. Chemical prevention technology is an important method of desertification control, which is of low-cost, effective and simple for application. In this paper, performance and application of PALS and PMLS, the two kinds of sandy-soil stabilizer, were studied. Both sandy-soil stabilizers were made from lignosulfonate, which is the byproduct of papermaking industry. Through a great deal of performance tests in laboratory, these two stabilizers showed high compressive strength, high resistances against freezing-thawing, aging, wind erosion and water erosion. Results of field application test in Wulanbuhe Desert demonstrate that they are effective on sand stabilization, and their cost are only 70 % of anionic polyacrylamide （APAM）.