Application of zeolite on ammonium-rich post-hydrothermal liquefaction wastewater generated from hydrothermal liquefaction process of Spirulina

Xia Ran, Na Duan, Yuanhui Zhang, Bao Ming Li, Zhi Dan Liu, Hai Feng Lu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Post-Hydrothermal Liquefaction Wastewater (PHWW) has a very high concentration of ammonium (6200 ± 106 mg/L), which is an inhibitor for the traditional sewage treatment process. The major objectives of this study were to: (1) evaluate the capacity of ammonium adsorption from PHWW using two zeolites (natural clinoptilolite and activated clinoptilolite) as the absorbent; (2) investigate the effects of zeolite particle size (0.18∼0.90 mm) and dosage (0.1∼0.5 g/mL) on ammonium adsorption efficiency; (3) study the regeneration methods of the natural clinoptilolite. Results obtained from the experiments showed that the optimized particle size and dosage of the natural and the activated clinoptilolite were 0.18∼0.30 mm, and 0.5 g/mL, corresponding to a highest ammonium adsorption efficiency of 51 ± 2% and 79 ± 1%; the ammonium adsorption efficiency of zeolite was positively related to the dosage; the smaller the particle size, generally the higher the ammonium adsorption efficiency; in addition, the activated clinoptilolite had a stronger activity and a larger capacity of ammonium ion exchange; when the natural clinoptilolite was regenerated with 4 mol/L NaOH and 0.1 mol/L HCl, the former was better. Application of zeolite on ammonium-rich PHWW is an alternative solution for reducing the concentration of toxic ammonium for subsequent utilization of PHWW.

Original languageEnglish (US)
Title of host publicationAdvances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015
EditorsAragona Patty, Shiquan Zhou, Shiming Chen
PublisherCRC Press/Balkema
Pages2733-2737
Number of pages5
ISBN (Print)9781138029330
StatePublished - Jan 1 2015
EventInternational Conference on Energy Equipment Science and Engineering, ICEESE 2015 - Guangzhou, China
Duration: May 30 2015May 31 2015

Publication series

NameAdvances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015
Volume3

Other

OtherInternational Conference on Energy Equipment Science and Engineering, ICEESE 2015
CountryChina
CityGuangzhou
Period5/30/155/31/15

ASJC Scopus subject areas

  • Engineering(all)
  • Energy (miscellaneous)

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  • Cite this

    Ran, X., Duan, N., Zhang, Y., Li, B. M., Liu, Z. D., & Lu, H. F. (2015). Application of zeolite on ammonium-rich post-hydrothermal liquefaction wastewater generated from hydrothermal liquefaction process of Spirulina. In A. Patty, S. Zhou, & S. Chen (Eds.), Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015 (pp. 2733-2737). (Advances in Energy Science and Equipment Engineering - Proceedings of International Conference on Energy Equipment Science and Engineering, ICEESE 2015; Vol. 3). CRC Press/Balkema.