Potential of Aquatic Macrophytes Eichhornia Crassipes, Pistia Stratiotes and Salvinia Molesta in Phytoremediation Of Textile Wastewater

Abstract

Phytoremediation is an emerging low cost green technology, which uses plants for treating contaminant in the environment. Phytoremediation potential of locally available aquatic plants Eichhornia crassipes (water hyacinth), Pistia stratiotes (water lettuce) and Salvinia molesta (water fern) in the treatment process of textile wastewater was investi-gated. The reduction efficiencies of chemical oxygen demand (COD), total solids (TS), total suspended solids (TSS), total dissolved solids (TDS), nitrates, phosphates, heavy metals (Cd, Ni and Zn) and total and fecal coliform from the waste-water by each plant species were estimated. Bioconcentration factors (BCF) and translocation factors (TF) of three plant species for Cd, Ni and Zn were also estimated in order to identify their heavy metal absorption and translocation capacity. The results of the study indicated that greater reduction of COD, nitrates, phosphates, total coliform and Zn from the ini-tial wastewater by the three plant species. The results of the study also suggested that the selected aquatic plants are hy-peraccumulators of Cd, Ni and Zn metals. The findings of this study suggest that E. crassipes, P. stratiotes and S. molesta are potential aquatic plants for treating textile waste water.

Comparison of Pistia Stratiotes and Lemna Minor Plants Potentials in Bioremediation of Domestic Wastewater

“…The increase in nitrate concentration observed in the L. minor effluent samples maybe due to the action of duckweed pests that fed on the L. minor plants prior to the final day of the sampling period. The results obtained in the P. stratiotes treatment system corroborates with the findings of Wickramasinghe and Jayawardana (2018). This study demonstrated that P. stratiotes plants exhibited high efficiency in nitrate uptake than L. minor plants.…”

Phytoremediation of Physico-chemical Parameters in Wastewater Effluents from Car Wash Bays in Yenagoa Metropolis, Nigeria

“…However, the increased acidity level of pH recorded in the L. Minor treated wastewater sample in this study was higher than the findings reported by [23]. Meanwhile, the percentage reduction values of pH concentration in P. Stratiotes and E. Crassipes treated wastewater samples were lower than the pH reduction level of 50-75% achieved in the study carried out by [24], but higher than the slight reduction level of pH achieved by [25] in their study of the phytoremediation of landfill leachate waste contaminants using P. Stratiotes and E. Crassipes. The pH reduction observed in the P. Stratiotes treated wastewater sample correlate with the findings of [26] that P. Stratiotes reduced alkaline pH concentration to neutral.…”

An experimental investigation on phytoremediation performance of water lettuce (Pistia stratiotes L.) for pollutants removal from paper mill effluent

“…Various types of industries are located in India viz., textile, tannery, pharma, glass making company, sugar manufacturing, paper-making company, etc. Currently, most of the industries are facing a major problem for the treatment of wastewater and need environment-friendly technologies for the management of wastewater, which could be helpful to create an ecofriendly environment Wickramasinghe & Jayawardana, 2018).…”

“…Utilization of green plants to remediate water pollution provides a sustainable, solar-driven, costeffective, less harmful, and eco-friendly process; therefore, it is gaining more attention of scientific community (Ismail et al, 2015;Kumar & Chopra, 2018). Water lettuce (Pistia stratiotes L.) belonging Araceae family has a high potential of absorbing pollutants and other toxic heavy metals from, also a high mark of cellular multiplication (Wickramasinghe & Jayawardana, 2018). Due to this, it can grow under stressed conditions and also accumulates various pollutants within its vegetative parts.…”

“…Numerous conventional methods of wastewater treatment like membrane filtration, ion exchange, electrocoagulation flotation, and adsorption process are costly and do not meet the criteria of sustainable wastewater treatment. These methods have major drawbacks, such as high operating costs, high-energy necessities, and generation of contaminated slurry (Wickramasinghe & Jayawardana, 2018). Thus, the phytoremediation methods can be used for the treatment of industrial effluent.…”