Synthesis and characterization of a novel soil stabilizer based on biodegradable poly(aspartic acid) hydrogel

Jun Yang; Fang Wang; Tianwei Tan

Korean Journal of Chemical Engineering, Vol.25, No.5, 1076-1081, September, 2008

DOI10.1007/s11814-008-0176-1 Export Citation

Synthesis and characterization of a novel soil stabilizer based on biodegradable poly(aspartic acid) hydrogel

Jun Yang^†, Fang Wang, and Tianwei Tan

Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, P.R., China

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A novel soil stabilizer based on poly-amino acid - polyaspartic acid (PASP) and its copolymer which modified by xanthan gum (XG) was studied to increase soil particle compressive strength and resistance to wind erosion. Due to its unique property, the stabilizer aggregated individual soil particles and formed crust. The sample compressive strength increased from 0.175 to 0.612MPa and the wind erosion modulus reduced from 22.43 to 10.56 g·m-2·min-1 after the 1% PASP hydrogel was applied by 1.67 Lm-2 (1 cm of crust). The soil water content was higher than the control due to the polymer’s excellent water-retaining property. The polymer had no negative influence on seed germination and growth. The biodegradability experiment showed that PASP was easy to biodegrade and therefore it was safe to apply in the field.

Keywords:Wind Erosion;Soil Stabilizer;Compressive Strength;Poly(aspartic acid);Xanthan Gum

[References]

Abu-Sharar TM, Salameh AS, Agr. Water Manage, 29, 53 (1995)
Lopez MV, Catena, 33, 17 (1998)
Belnap J, Gillette DA, J. Arid Environ., 39, 133 (1998)
Eldridge DJ, Leys JF, J. Arid Environ., 53, 457 (2003)
Nordstrom KF, Hotta S, Geoderma, 121, 157 (2004)
Michels K, Sivakumar MVK, Allison BE, Field Crop. Res., 40, 111 (1995)
Lopez MV, Gracia R, Arrue JL, Eur. J. Agron, 12, 191 (2000)
Joo H, Yoo YJ, Dordick JS, Korean J. Chem. Eng., 15(4), 362 (1998)
Kim YW, Kim JJ, Kim YH, Korean J. Chem. Eng., 20(6), 1158 (2003)
Chun SW, Kim JD, Korean J. Chem. Eng., 19(5), 803 (2002)
Kim NH, Lee TH, Choi JS, Korean J. Chem. Eng., 17(5), 534 (2000)
Tomida M, Nakato T, Matsunami S, Kakuchi T, Polymer, 38(18), 4733 (1997)
Yang J, Fang L, Tan TW, J. Appl. Polym. Sci., 102(1), 550 (2006)
Obst M, Steinbuchel A, Biomacromolecules, 5(4), 1166 (2004)
Bryant CM, McClements DJ, Food Hydrocolloids, 14, 383 (2000)
JIS K 6950, Plastics testing method for aerobic biodigradability by activated sludge, Japanese Standards Association (1994)

[Referenced By]

[1] Abu-Sharar TM, Salameh AS, Agr. Water Manage, 29, 53 (1995)

[2] Lopez MV, Catena, 33, 17 (1998)

[3] Belnap J, Gillette DA, J. Arid Environ., 39, 133 (1998)

[4] Eldridge DJ, Leys JF, J. Arid Environ., 53, 457 (2003)

[5] Nordstrom KF, Hotta S, Geoderma, 121, 157 (2004)

[6] Michels K, Sivakumar MVK, Allison BE, Field Crop. Res., 40, 111 (1995)

[7] Lopez MV, Gracia R, Arrue JL, Eur. J. Agron, 12, 191 (2000)

[8] Joo H, Yoo YJ, Dordick JS, Korean J. Chem. Eng., 15(4), 362 (1998)

[9] Kim YW, Kim JJ, Kim YH, Korean J. Chem. Eng., 20(6), 1158 (2003)

[10] Chun SW, Kim JD, Korean J. Chem. Eng., 19(5), 803 (2002)

[11] Kim NH, Lee TH, Choi JS, Korean J. Chem. Eng., 17(5), 534 (2000)

[12] Tomida M, Nakato T, Matsunami S, Kakuchi T, Polymer, 38(18), 4733 (1997)

[13] Yang J, Fang L, Tan TW, J. Appl. Polym. Sci., 102(1), 550 (2006)

[14] Obst M, Steinbuchel A, Biomacromolecules, 5(4), 1166 (2004)

[15] Bryant CM, McClements DJ, Food Hydrocolloids, 14, 383 (2000)

[16] JIS K 6950, Plastics testing method for aerobic biodigradability by activated sludge, Japanese Standards Association (1994)