Anaerobic biodegradation of RDX and HMX with different co-substrates

Zongkuan Liu; Lei Zhang; Yonghong Liu; Yanling He

doi:10.1016/j.cjche.2015.01.004

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Anaerobic biodegradation of RDX and HMX with different co-substrates

能源、资源与环境技术 | Updated：2026-01-06

- Anaerobic biodegradation of RDX and HMX with different co-substrates
- Chinese Journal of Chemical Engineering Vol. 23, Issue 4, Pages: 704-709(2015)
- Affiliations：
  
  1. 2 Department of Chemical Engineering, Xi'an Jiaotong University,Xi'an,China,710049
  2. 3 Department of Environmental and Chemical Engineering, Xi'an Polytechnic University,Xi'an,China,710048
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.01.004
  CLC：
- Published：2015
- Accepted：
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Zongkuan Liu, Lei Zhang, Yonghong Liu, Yanling He. Anaerobic biodegradation of RDX and HMX with different co-substrates[J]. Chin.J.Chem.Eng., 2015, 23(4): 704-709.
DOI：

Zongkuan Liu, Lei Zhang, Yonghong Liu, Yanling He. Anaerobic biodegradation of RDX and HMX with different co-substrates[J]. Chin.J.Chem.Eng., 2015, 23(4): 704-709. DOI： 10.1016/j.cjche.2015.01.004.

摘要

Abstract

Simulated wastewater of hexahydro-1

5-trinitro-1

5-triazine (RDX) and octahydro-1

7-tetranitro-1

7- tetrazocine (HMX)was treated under anaerobic conditions with co-substrates such as ammonium chloride

dex-trose

sodium acetic

sodium nitrate and sulfate. The results showed that with nitrogen compounds such as ammonium chloride added as co-substrate

no significant change was observed

indicating that the molar ratio of N/C for RDX and HMX is sufficient for biodegradation.With the addition of dextrose and acetate to the system

biodegradation efficiency was enhanced greatly. For example

with dextrose as the co-substrate

degradation efficiency of 99.1% and 98.5% was achieved for RDX and HMX

respectively

after treatment for 7 days. When sodiumacetic was used as the co-substrate

the enhancement of degradation percentage was similar

but was not as high as that with dextrose

indicating the selectivity of RDX and HMX to co-substrate during anaerobic degradation. With sodium nitrate as the co-substrate

the degradation efficiency of RDX or HMX decreased with the increase of salt concentration. Sodium sulfate has no significant effect on the biodegradation of RDX and HMX. A well-selected co-substrate should be employed in applications for degradation of RDX and HMX wastewaters.

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