Abstract：
:Application of extracellular polymeric substances (EPS) solubilization treatment with biosurfactant rhamnolipid (RL) to reduce clogging in constructed wetlands was first conducted in this study. The results showed significant improvement in the solubilization and dispersion of clogging matter following the treatment. And RL dosage of 0.09-0.15g/L altered microbial group make-up and had an overall positive effect on the growth of microorganisms. Moreover, RL was found to enhance EPS dissolution and dispersion, which was beneficial for the release of enzymes embedded in the EPS, and resulted in enhanced pollutant removal. The treatment had no apparent detrimental effect on wetland plants. Our results indicate that the optimum dosage of RL is 0.12g/L, and that the approach provides a promising and moderate option to reverse wetland clogging through RL-mediated solubilization treatment.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Du M,Xu D,Trinh X,Liu S,Wang M,Zhang Y,Wu J,Zhou Q,Wu Zdoi
10.1016/j.biortech.2016.07.040subject
Has Abstractpub_date
2016-10-01 00:00:00pages
833-41eissn
0960-8524issn
1873-2976pii
S0960-8524(16)31004-5journal_volume
218pub_type
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