Plant-Microbe Synergism in Floating Treatment Wetlands for the Enhanced Removal of Sodium Dodecyl Sulphate from Water

Abstract

Excessive use of detergents in wide industrial processes results in unwanted surfactant pollution. Among them, sodium dodecyl sulphate (SDS) has well-known history to be used in pharmaceutical and industrial applications. However, if discharged without treatment, it can cause toxic effects on living organisms especially to the aquatic life. Floating treatment wetlands (FTWs) could be a cost-effective and eco-friendly options for the treatment of wastewater containing SDS. In this study, FTWs mesocosms were established in the presence of hydrocarbons-degrading bacteria. Two plant species (Brachiaria mutica and Leptochloa fusca) were vegetated and a consortium of bacteria (Acinetobacter sp. strain BRSI56, Acinetobacter junii strain TYRH47, and Acinetobacter sp. strain CYRH21) was applied to enhance degradation in a short-time. Results illustrated that FTWs vegetated with both plants successfully removed SDS from water, however, bacterial augmentation further enhanced the removal efficiency. Maximum reduction in SDS concentration (97.5%), chemical oxygen demand (92.0%), biological oxygen demand (94.2%), and turbidity (99.4%) was observed in the water having FTWs vegetated with B. mutica and inoculated with the bacteria. The inoculated bacteria showed more survival in the roots and shoots of B. mutica as compared to L. fusca. This study concludes that FTWs have the potential for the removal of SDS from contaminated water and their remediation efficiency can be enhanced by bacterial augmentation.

Improved remediation of amoxicillin-contaminated water by floating treatment wetlands intensified with biochar, nutrients, aeration, and antibiotic-degrading bacteria

“…These bacterial strains were already characterized for their plant growth promoting and hydrocarbons degrading abilities [ 1 , 39 , 40 ]. The degradation potential of strains was measured by growing them on M9 media containing 800 ppm AMX at 37°C in a shaking incubator (shake flask study) [ 41 ]. Among these, three bacterial strains (BRSI56, PsJN NT 23) were selected on the basis of their maximum growth and AMX degradation potential (data not shown).…”

“…Among these, three bacterial strains (BRSI56, PsJN NT 23) were selected on the basis of their maximum growth and AMX degradation potential (data not shown). The chosen strains were cultivated in LB media for 24 h, and their cells were harvested by centrifugation at 4000 rpm at 4°C [ 41 ]. 100 mL of inoculum (containing equal cells of each strain, 10 9 CFUmL −1 ) containing the consortium of bacterial strains was added into the selected treatments [ 1 ].…”

Macrophytes’ Performance in Floating Treatment Wetlands for the Remediation of Ciprofloxacin‐Contaminated Water

“…These macrophytes were chosen due to their availability in the natural wetlands of Pakistan and their ability to withstand harsh environmental conditions. [ 25,30–33 ]…”

“…[ 20,21 ] The use of floating treatment wetlands (FTWs) is one of the most sustainable and economical methods for the removal of contaminants from water. [ 22–25 ] This nature‐based technology uses plants and their associated microorganisms to remove organic pollutants from water. [ 26–29 ] However, the efficiency of FTWs vegetated with different macrophytes has not been reported for the remediation of water contaminated with CIP.…”

Comparison of Contaminants Removal Efficiencies in Wastewater Using Constructed Wetlands of Single and Two Stages

“…When nature and wastewater meet, biological beings are severely affected (Wear et al, 2020). Emerging contaminants such as synthetic detergents high in sodium dedecyl sulfate, widely used in cleaning and disinfection, which are highly toxic elements and can be treated by aquatic plants and microbial elements (Yasin, M. et al, 2021); Similarly, medications such as acetaminophen can receive similar treatment (Yang, C.W. et al, 2020).…”