Journal
RSC ADVANCES
Volume 6, Issue 18, Pages 15112-15120Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra21076c
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Biofilm-bacterial communities have been exploited in various biological wastewater treatment processes. The present work is aimed at exploring the possible factors for tailoring biofilm mechanics by introducing divalent cations (Ca2+) in the constructed wetland soil. The in vitro investigation of soil samples collected at various retention times revealed that the addition of Ca2+ facilitates the formation of well organized patterns of biofilm compared to calcium depleted conditions. Afterwards, Ca2+ ions were intentionally introduced into the soil of lab-scale constructed wetland to examine its superior treatment efficiency towards the removal of various chemical and microbiological contaminants. The current work therefore may form a basis to implement theoretical predictions experimentally in a real time existing wastewater treatment technology. Hence, the same approach can effectively be adopted in pilot scale wetland systems as well as other biofilm mediated wastewater treatment technologies.
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