Preparation and water retention properties of clay-based sand-fixing and grass-planting materials

Abstract

Targeting the problem of available water conservation in sand fixation, the sand-fixing and grass-planting materials were prepared with clay modified by emulsifying vegetable waxes and octylphenol polyoxyethylene ether (OP4). The water retention property was studied in simulating desertification environmental climate and the materials were characterized by means of UV-Vis, SEM, FTIR, XRD and TGA measurements. The experimental result showed that the materials had excellent water retention properties, due to that vegetable waxes adhered evenly to clay particle surfaces, made the clay pores changing from hydrophilic to hydrophobic and so inhibited the water evaporation. Grass-planting experiment showed that, with reasonable mass ratio of clay, vegetable waxes and surfactant, the materials not only inhibited water evaporation but also maintained sound air permeability so shat the germination rate and survival rate of grass were significantly improved.

Keywords

octylphenol polyoxyethylene ether (OP4) / vegetable waxes / sand-fixing and grass-planting / water retention

References

[1] Adeel Z, Safriel U, Niemeijer D, . Millennium Ecosystem Assessment. Ecosystems and Human Wellbeing: Desertification Synthesis[M], 2005 Washington DC Island Press 15-20.

[2] Zhao WZ, Hu GL, Zhang ZH, . Shielding Effect of Oasis-protection Systems Composed of Various Forms of Wind Break on Sand Fixation in an Arid Region: A Case Study in the Hexi Corridor, Northwest China [J]. Ecological Engineering, 2008, 33(2): 119-125.

[3] Asi IM, Wahhab AA, Hamad I, . Stabilization of Dune Sand Using Foamed Asphalt [J]. Geotechnical Testing Journal, 2002, 25(2): 168-176.

[4] Bakass M, Mokhlisse A, Lallemant M Absorption and Desorption of Liquid Water by a Superabsorbent Polymer: Effect of Polymer in the Drying of the Soil and the Quality of Certain Plants [J]. Journal of Applied Polymer Science, 2002, 83(2): 234-243.

[5] Raju KM, Raju MP, Mohan YM Synthesis and Water Absorbency of Crosslinked Superabsorbent Polymers[J]. Journal of Applied Polymer Science, 2002, 85(8): 1 795-1 801.

[6] Chen P, Zhang WA, Luo W, . Synthesis of Superabsorbent Polymers by Irradiation and Their Applications in Agriculture [J]. Journal of Applied Polymer Science, 2004, 93(4): 1 748-1 755.

[7] Li T, Deng XY, Li JB, . A Study on the Modified Aluminosilicate Sand Stabilization Material [J]. Materials Review, 2010, 24: 431-435.

[8] Wang YM, Chen WW, Han WF Micro-study on Mechanism of Sand Fixation with SH[J]. Yantu Lixue/Rock and Soil Mechanics, 2005, 26(4): 650-654.

[9] Wang HJ, Li J, Lu XZ, . A Field Experimental Study of Lignin Sand Stabilizing Material (LSSM) Extracted from Spent-liquor of Straw Pulping Paper Mills[J]. Journal of Environmental Sciences, 2005, 17(4): 650-654.

[10] Omidian H, Hashemi SA, Sammes PG, . Model for the Swelling of Superabsorbent Polymers[J]. Polymer, 1998, 39(26): 6 697-6 704.

[11] Kutiel P, Cohen O, Shoshany M, . Vegetation Establishment on the Southern Israeli Coastal Sand Dunes Between the Years 1965 and 1999 [J]. Landscape and Urban Planning, 2004, 267(1–4): 141-156.

[12] Zhang YM, Wang HL, Wang XQ, . The Microstructure of Microbiotic Crust and Its Influence on Wind Erosion for a Sandy Soil Surface in the Gurbantunggut Desert of Northwestern China [J]. Geoderma, 2006, 132(3–4): 441-449.

[13] Cao SX Why Large-scale Afforestation Efforts in China Have Failed to Solve the Desertification Problem[J]. Environmental Science and Technology, 2008, 42(6): 1 826-1 831.