生物高分子聚合物生态固沙效果初探

Preliminary study on ecological sand fixation effect of biopolymers[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20221268

Citation: Preliminary study on ecological sand fixation effect of biopolymers[J]. Chinese Journal of Geotechnical Engineering. DOI: 10.11779/CJGE20221268

生物高分子聚合物生态固沙效果初探  English Version

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Preliminary study on ecological sand fixation effect of biopolymers

摘要

摘要: 沙漠化治理是一个全球性的难题。相较于传统的沙漠固沙技术，作为环境友好型固化材料的生物高分子聚合物，不仅能有效胶结沙漠砂以抵抗风蚀作用，还能提高沙漠砂的促生性能以促进植物生长，最终达到利用植被实现永久固沙的效果。基于前述设想，本文通过表面硬度试验、保水性能试验和植物生长试验研究了黄原胶（XG）、瓜尔胶（GG）以及二者的等质量混合胶（MG）生态固沙的效果。表面硬度试验表明生物高分子聚合物能有效胶结沙漠砂颗粒，质量分数为0.1%的XG、GG和MG溶液分别将沙漠砂的表面压力强度提高了9.4、5.3和8.0倍；保水性能试验表明生物高分子聚合物对沙漠砂保水性能的提升效果随溶液质量分数的增大而增大，且40℃高温养护条件下，生物高分子聚合物促生性能的比较结果为：XG＞MG＞GG；植物生长试验表明，在室内条件下，生物高分子聚合物能缩短植物出苗时间、提高植物的出苗率和幼苗高度，明显提高沙漠砂的促生性能。本文的研究初步表明，采用生物高分子聚合物实现生态固沙具备理论上的可行性。

Abstract: Desertification control is a global challenge. Compared to traditional desert sand fixation techniques, biopolymers as environmentally friendly solidification materials can not only effectively bond desert sand to resist wind erosion, but also improve its growth promoting properties to promote plant growth, ultimately achieving permanent sand fixation. Based on the aforementioned ideas, this paper studied the ecological sand fixation effects of xanthan gum (XG), guar gum (GG), and their equal mass mixed gum (MG) through surface hardness test, water retention performance test, and plant growth test. The surface hardness test shows that biopolymers can effectively bond desert sand particles. XG, GG, and MG solutions with a mass fraction of 0.1% increase the surface pressure strength of desert sand by 9.4, 5.3, and 8.0 times, respectively; The water retention performance test shows that the improvement effect of biopolymers on the water retention performance of desert sand increases with the increase of solution mass fraction. Moreover, under high temperature curing conditions at 40℃, the comparative results of the growth promoting properties of the three biopolymers are: XG>MG>GG; Plant growth experiments have shown that under indoor conditions, biopolymers can shorten plant emergence time, increase plant emergence rate and seedling height, and significantly improve the growth promoting performance of desert sand. The preliminary research in this article indicates that the use of biopolymers for ecological sand fixation is theoretically feasible.

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计量 文章访问数:  0 HTML全文浏览量:  0 PDF下载量:  0 出版历程 收稿日期:  2022-10-16 网络出版日期:  2024-03-24

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