Enhanced biofilm formation and denitrification in biofilters for advanced nitrogen removal by rhamnolipid addition

被引：64
作者：
Peng, Chong [1 ]
Gao, Yilin [1 ]
Fan, Xuan [1 ]
Peng, Pengcheng [1 ]
Huang, Hui [1 ]
Zhang, Xuxiang [1 ]
Ren, Hongqiang [1 ]
机构：
[1] Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2019年 / 287卷
基金：
中国国家自然科学基金;
关键词：
Denitrification biofilters (DNBFs); Advanced nitrogen removal; Start-up; Rhamnolipid; Biofilm; MICROBIAL COMMUNITY EVOLUTION; WASTE-WATER TREATMENT; BACTERIAL COMMUNITIES;
D O I：
10.1016/j.biortech.2019.121387
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Denitrification biofilters (DNBFs) are widely used in advanced nitrogen removal of wastewater with low C/N and effective biofilm formation is critical to their long-term operation. Hereby the influence of rhamnolipid addition in DNBFs was investigated for the first time. Gradient concentrations (0, 20, 40, 80, 120 mg/L) of rhamnolipid were applied to investigate nitrogen removal, biofilm properties and microbial community of lab-scale DNBFs. A significant increase of nitrogen removal was observed in rhamnolipid-treated DNBFs (p < 0.05). Total solid (TS), extracellular polymeric substances (EPS) and adhesion force of biofilms in DNBF with 120 mg/L rhamnolipid reached the maximum, which were 2.17, 2.15 and 3.36 times of those in the control, respectively. Moreover, rhamnolipid exhibited an improvement in abundance of Simplicispira and Gemmatimonas which were responsible for enhanced biofilm formation and denitrification. The results suggested that rhamnolipid addition can be a novel strategy to improve the start-up and denitrification performance of DNBFs.
引用
收藏
页数：7
相关论文
共 25 条
  • [1] [Anonymous], 2005, Standard methods for the examination of water and waste- water
  • [2] Effective start-up biofiltration method for Fe, Mn, and ammonia removal and bacterial community analysis
    Cai, Yan'an
    Li, Dong
    Liang, Yuwen
    Luo, Yahong
    Zeng, Huiping
    Zhang, Jie
    [J]. BIORESOURCE TECHNOLOGY, 2015, 176 : 149 - 155
  • [3] Dynamics and functions of bacterial communities in bark, charcoal and sand filters treating greywater
    Dalahmeh, Sahar S.
    Jonsson, Hakan
    Hylander, Lars D.
    Hui, Nan
    Yu, Dan
    Pell, Mikael
    [J]. WATER RESEARCH, 2014, 54 : 21 - 32
  • [4] Towards the biofilm characterization and regulation in biological wastewater treatment
    Huang, Hui
    Peng, Chong
    Peng, Pengcheng
    Lin, Yuan
    Zhang, Xuxiang
    Ren, Hongqiang
    [J]. APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, 2019, 103 (03) : 1115 - 1129
  • [5] Calcium ion- and rhamnolipid-mediated deposition of soluble matters on biocarriers
    Huang, Hui
    Lin, Yuan
    Peng, Pengcheng
    Geng, Jinju
    Xu, Ke
    Zhang, Yan
    Ding, Lili
    Ren, Hongqiang
    [J]. WATER RESEARCH, 2018, 133 : 37 - 46
  • [6] Towards physicochemical and biological effects on detachment and activity recovery of aging biofilm by enzyme and surfactant treatments
    Huang, Hui
    Yu, Qisheng
    Ren, Hongqiang
    Geng, Jinju
    Xu, Ke
    Zhang, Yan
    Ding, Lili
    [J]. BIORESOURCE TECHNOLOGY, 2018, 247 : 319 - 326
  • [7] Roles of ionic strength and biofilm roughness on adhesion kinetics of Escherichia coli onto groundwater biofilm grown on PVC surfaces
    Janjaroen, Dao
    Ling, Fangqiong
    Monroy, Guillermo
    Derlon, Nicolas
    Mogenroth, Eberhard
    Boppart, Stephen A.
    Liu, Wen-Tso
    Nguyen, Thanh H.
    [J]. WATER RESEARCH, 2013, 47 (07) : 2531 - 2542
  • [8] Rhamnolipid-enhanced Pseudomonas putida biofilm formation on hydrophilic surfaces with toluene as the bacterium's sole carbon source
    Katz, Haim
    Farber, Ravit
    Chaniel, Gilad
    Ankar, Yaakov
    Cohen, Haim
    Cahan, Rivka
    [J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION, 2018, 127 : 87 - 94
  • [9] Tepidisphaera mucosa gen. nov., sp nov., a moderately thermophilic member of the class Phycisphaerae in the phylum Planctomycetes, and proposal of a new family, Tepidisphaeraceae fam. nov., and a new order, Tepidisphaerales ord. nov.
    Kovaleva, O. L.
    Merkel, A. Yu
    Novikov, A. A.
    Baslerov, R. V.
    Toshchakov, S. V.
    Bonch-Osmolovskaya, E. A.
    [J]. INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY, 2015, 65 : 549 - 555
  • [10] Attached growth systems for wastewater treatment in small and rural communities: a review
    Loupasaki, Eleftheria
    Diamadopoulos, Evan
    [J]. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2013, 88 (02) : 190 - 204
123