Denitrification performance and microbial diversity in a packed-bed bioreactor using biodegradable polymer as carbon source and biofilm support

被引：151
作者：
Shen, Zhiqiang [1 ,2 ]
Zhou, Yuexi [1 ]
Hu, Jun [2 ]
Wang, Jianlong [2 ,3 ]
机构：
[1] Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
[2] Tsinghua Univ, Lab Environm Technol, INET, Beijing 100084, Peoples R China
[3] Tsinghua Univ, Beijing Key Lab Fine Ceram, Beijing 100084, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2013年 / 250卷
基金：
中国国家自然科学基金;
关键词：
Nitrate; Biofilm; Microbial community; Denitrification; Solid carbon source; BIOLOGICAL DENITRIFICATION; MECHANICAL-PROPERTIES; DRINKING-WATER; NITRATE REDUCTION; POLY(LACTIC ACID); SOLID SUBSTRATE; SHEAR FORCE; STARCH; WASTE; REACTOR;
D O I：
10.1016/j.jhazmat.2013.02.026
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A novel kind of biodegradable polymer, i.e., starch/polycaprolactone (SPCL) was prepared and used as carbon source and biofilm support for biological denitrification in a packed-bed bioreactor. The denitrification performances and microbial diversity of biofilm under different operating conditions were investigated. The results showed that the average denitrification rate was 0.64 +/- 0.06 kg N/(m(3) d), and NH3-N formation (below 1 mg/L) was observed during denitrification. The nitrate removal efficiency at 15 degrees C was only 55.06% of that at 25 degrees C. An initial excess release of DOC could be caused by rapid biodegradation of starch in the surfaces of SPCL granules, then it decreased to 10.08 mg/L. The vast majority of species on SPCL biofilm sample (99.71%) belonged to six major phyla: Proteobacteria, Bacteroidetes, Chloroflexi, Firmicutes, Spirochaetes and Actinobacteria. Proteobacteria were the most abundant phylum (85.50%) and mainly consisted of beta-proteobacteria (82.39%). Diaphorobacter and Acidovorax constituted 52.75% of the identified genera which were denitrifying bacteria. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：431 / 438
页数：8
相关论文
共 56 条
  • [11] Comparison of Denitrification Between Paracoccus sp and Diaphorobacter sp.[J]. Chakravarthy, Srinandan S.;Pande, Samay;Kapoor, Ashish;Nerurkar, Anuradha S. APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY, 2011(01)
  • [12] Nitrogen removal using biodegradable polymers as carbon source and biofilm carriers in a moving bed biofilm reactor[J]. Chu, Libing;Wang, Jianlong. CHEMICAL ENGINEERING JOURNAL, 2011(01)
  • [13] Comparison of polyurethane foam and biodegradable polymer as carriers in moving bed biofilm reactor for treating wastewater with a low C/N ratio[J]. Chu, Libing;Wang, Jianlong. CHEMOSPHERE, 2011(01)
  • [14] Degradation of polycaprolactone/starch blends and composites with sisal fibre[J]. di Franco, CR;Cyras, VP;Busalmen, JP;Ruseckaite, RA;Vázquez, A. POLYMER DEGRADATION AND STABILITY, 2004(01)
  • [15] Microbial community dynamics in a chemolithotrophic denitrification reactor inoculated with methanogenic granular sludge[J]. Fernandez, Nuria;Sierra-Alvarez, Reyes;Field, James A.;Amils, Ricardo;Sanz, Jose Luis. CHEMOSPHERE, 2008(03)
  • [16] Poly(lactic acid) fiber: An overview[J]. Gupta, Bhuvanesh;Revagade, Nilesh;Hilborn, Jons. PROGRESS IN POLYMER SCIENCE, 2007(04)
  • [17] CRITERIA FOR NITRIFICATION IN FIXED FILM REACTORS[J]. HARREMOES, P. WATER SCIENCE AND TECHNOLOGY, 1982(1-2)
  • [18] Application of polyhydroxyalkanoates for denitrification in water and wastewater treatment[J]. Hiraishi, A;Khan, ST. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 2003(02)
  • [19] Microbial denitrification of wastewater using biodegradable polycaprolactone[J]. Honda, Y;Osawa, Z. POLYMER DEGRADATION AND STABILITY, 2002(02)
  • [20] Hong XA, 2010, RES MICROBIOL, V161, P687, DOI [10.1016/j.resmic.2010.06.010, 10.1016/J.resmic.2010.06.010]
123456