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Evaluating the primary and ready biodegradability of dianilinodithiophosphoric acid

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Abstract

Dianilinodithiophosphoric acid (DDA) is widely used as sulfide mineral flotation collector in China. It is necessary to investigate the biodegradability of DDA to provide the fundamental knowledge to assess the environmental fate in the risk assessment of DDA and to design and operate the DDA flotation wastewater biological treatment plant. In the present study, the primary and ready aerobic biodegradations of DDA were studied and the primary biodegradation kinetic model of DDA was developed. The results show that DDA displays a good primary biodegradability and its biodegradation ratio reaches 99.8 % in 7 days. In contrast, DDA is not easily ready biodegradable; hence, it is a partially biodegradable organic compound. The primary aerobic biodegradation kinetics can be described using the first-order reaction kinetics equation: C = 19.72191e−0.01513t.

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Acknowledgments

This work was supported by the Education Special Funds of the University Discipline Construction of Guangdong Province (Grant No. 2014KTSP022), Nature Science Foundation of Guangdong (2015A030303003), and Science and Technology project of Guangdong (2014B020216009).

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China

    Weixiong Lin, Shuiyu Sun, Pingting Xu, Yongkang Dai & Jie Ren

  2. Guangdong Vocational College of Environmental Protection Engineering, Foshan, 528216, China

    Weixiong Lin & Shuiyu Sun

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  1. Weixiong Lin
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  2. Shuiyu Sun
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  3. Pingting Xu
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  4. Yongkang Dai
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  5. Jie Ren
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Correspondence to Shuiyu Sun.

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Lin, W., Sun, S., Xu, P. et al. Evaluating the primary and ready biodegradability of dianilinodithiophosphoric acid. Environ Monit Assess 188, 232 (2016). https://doi.org/10.1007/s10661-016-5242-2

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  • DOI: https://doi.org/10.1007/s10661-016-5242-2

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