Hydrothermal Carbonization of Nonylphenol Ethoxylates Waste Liquid for Energy Source Generation

DOI: 10.4236/ajac.2015.613101   PDF   HTML   XML   4,182 Downloads   4,887 Views  


Nonylphenol polyethoxylates (NPEOs) are widely used as nonionic surfactants in many industry fields. High concentration NPEOs waste water is produced in some production processes. It is often treated to realize reduction by distillation. Therefore, NPEOs waste liquid with higher concentration is produced and it is difficult to be treated by traditional water treatment process. In this study, hydrothermal carbonization process was used to convert NPEOs waste liquid to carbonaceous product (hydrochar) with sulfuric acid as additive in 24 h at 200°C. The hydrochar was characterized by scanning electron microscope, Fourier-transform infrared spectrometer and thermogravimetric analysis. The element composition and the high heat value of the hydrochar were similar to lignite, showing that it could be used as an alternative fuel.

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Ge, Y. , Zhang, W. , Xue, G. and Rao, P. (2015) Hydrothermal Carbonization of Nonylphenol Ethoxylates Waste Liquid for Energy Source Generation. American Journal of Analytical Chemistry, 6, 1059-1066. doi: 10.4236/ajac.2015.613101.

Conflicts of Interest

The authors declare no conflicts of interest.


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