Performance Study on Scale Inhibition of Biodegradable Water Treatment Agent

Abstract:

The intermediate product polysuccinimide was synthesized by catalytic polymerization with L-aspartic acid as raw material in liquid phase, and then the main chain of poly (aspartic acid) were introduced several new functional groups by the method of open-loop, synthesized polyaspartic acid and its derivatives. The structure of these products were characterized by FT-IR, and the properties of scale inhibition and biodegradability of polyaspartic acid and its derivatives were studied. The results show that the several types of polymers have biodegradable properties. After the new functional groups were grafted in PASP, the performance of scale inhibition of Ca₃(PO₄)₂ could significantly be improved,but reduce the performance of scale inhibition of BaSO₄.

• Periodical: Advanced Materials Research (Volume 748)
• Pages: 320-324
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.748.320
• Online since: August 2013
• Authors: Wu Chen, Da Yong Wang, Ping Mei
• Keywords: Biodegradable, Derivative, Polyaspartic Acid, Scale Inhibitors

References

[1] Jia Fengchun, Li Zituo, Dong Quanyu. Present situation and development of scale inhibitor for industrial circulating cooling water. Industrial Water Treatment, 2006, 26(4): 12-14.

[2] Tang J S, Fu S L, Emmons D H. Biodegradable modified polyaspartic polymers for corrosion and scale control. US, 6022401, (2000).

[3] Louis L. Wood, Gary J. Calton. Copolymers of polyaspartic acid and polycarb-oxylic acids and Polyamines. US 6001956, (1999).

[4] Song Hong-mei, Zhao Yan-sheng, Liu Yong-mei. Study on scale inhibiting performance of modified polyaspartic acid. Chemical and Biological Engineering, 2008, 25(7): 14-16.

[5] Liang Zhi-qun, Li jing-ning, Huang, Nan-zhe. Performance of scale inhibition by polyaspartic acid derivatives and its combinations. Industrial Water Treatment, 2006, 26(8): 23-25.

[6] Huang Yuan-xing, Lei zhong-fang, Xue Dan-qing. Study on the biodegradability of polyaspartic acid by shaking-bottle incubating test. Industrial Water Treatment, 2003, 23(12): 26-28.

[7] Zhao Yan-sheng, Liu Yong-Mei, Yan Feng-wen. Synthesis and performance of polyaspartic acid derivatives with hydroxyl group. China fine chemical industry association, 2006 ninth annual meeting of the national functional polymer industry committee, 2006, 152-158.

[8] Huang Yuan-xing, Lei Zhong-fang. Evaluation method of biodegradability of polyaspartic acids-Like scale inhibitors. Fudan University(Natural Science), 2003, 42(6), 1053-1057.