Enhanced remediation of sewage effluent by endophyte-assisted floating treatment wetlands

Ijaz, Amna; Shabir, Ghulam; Khan, Qaiser M.; Afzal, Muhammad

doi:10.1016/j.ecoleng.2015.07.025

Cited by 139 publications

(84 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In return, they get nutrients and residency in different parts of the plant, i.e., rhizosphere and endosphere. Floating treatment wetlands technology, an in situ solar powered remediation in synergism with bacteria, has great potential for ecosystem restoration with minimum site disturbance, maintenance, and financial input …”

Section: Plant–bacterial Synergism In Ftwsmentioning

confidence: 99%

“…It has been reported that wastewater with a BOD/COD ratio >0.5 contains higher load of organic matter and hence are easily biodegradable . Since most of the wastewater has BOD/COD ratio ranging between 0.6 and 0.8; application of FTWs can reduce high proportion of COD and BOD without any additional procedure . Nevertheless, based on the literature, Chen et al reported that efficiency of FTWs for COD and BOD removal varies from 17% to 84% and 36% to 90%, respectively.…”

Section: Pollutants Removal Mechanismmentioning

confidence: 99%

See 1 more Smart Citation

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

Self Cite

102

View full text Add to dashboard Cite

Floating treatment wetland (FTW) is an effective and sustainable technology for wastewater treatment. It has been widely adopted for treating various kinds of polluted water including agricultural runoff, stormwater, industrial effluents, etc. In FTWs, plants are vegetated on a floating mat while their roots are extended down to the contaminated water hence acting as biological filters. Nutrients and potentially toxic metal(s)/element(s) are taken up from the wastewater by plants through their roots whereas organic matter is degraded by the microorganisms forming biofilms on the roots and mat surface. Additionally, organic contaminants which are already taken up by the plants are degraded by endophytic bacteria in planta. This article provides an overview of FTWs and their application for wastewater treatment. The key factors which have an impact on the performance of FTWs are also described. Lastly, the potential role of combined use of plants and bacteria in FTWs for the maximum remediation of polluted water is emphasized.

show abstract

Section: Plant–bacterial Synergism In Ftwsmentioning

confidence: 99%

Section: Pollutants Removal Mechanismmentioning

confidence: 99%

Floating Wetlands: A Sustainable Tool for Wastewater Treatment

Shahid

Arslan

Ali

et al. 2018

CLEAN Soil Air Water

Self Cite

102

View full text Add to dashboard Cite

show abstract

“…The root colonizing endophytes are the most important group of beneficial bacteria, owing to their versatility of ways to influence host plant including bioactive compounds production, plant growth enhancement, disease suppression, and bioremediation (Compant et al 2010;Zhu et al 2014;Ijaz et al 2015Ijaz et al , 2016. Although endophytes colonize internal tissues of the host, but the role of environmental factors should not be undermined when trying to improve the reliability of endophytes as PGPR.…”

Section: Colonization Events Of Endophytic Bacteriamentioning

confidence: 99%

Mechanistic insights on plant root colonization by bacterial endophytes: a symbiotic relationship for sustainable agriculture

Jha

Panwar

2018

Environmental Sustainability

View full text Add to dashboard Cite

Plant-microbe and soil interactions are one of the oldest muse for multi-disciplinary researchers. Plant growth promoting microorganisms influence the host physiology by secreting regulatory chemical signals in the vicinity of plant roots and play a key role in the enhancement of plant growth and expansion. The present review deals with the in-depth understanding of steps involved in host tissues colonization by bacterial endophytes. The molecular insights of these events, particularly for endophytic bacteria, are poorly documented till date. The endophytic bacteria must coexist with the host plant and capable of colonizing the internal plant tissues without being recognized as a pathogen. A proper understanding of exchange of signals between the host plant and bacterial communities is required which may facilitate the development of new strategies to promote beneficial interactions between them. This knowledge can be instrumental in agricultural practices as well as for phytoremediation of pollutants. Keeping these facts in mind, the present review attempts to explore the systematic understanding of steps involved and molecular insights of plant colonization events by endophytic bacteria. We conclude that molecular mechanisms and factors affecting endophytic bacterial colonization deserve more research attention in order to exploit their beneficial aspects for sustainable agriculture and environment.

show abstract

“…The key consideration and hindrance in selection of a suitable treatment system is the cost, energy, trained human resources, system compatibility, and operational complications [15]. The right choice of an appropriate and workable technology is very important because of the [19] Membrane Bioreactor Wastewater COD, MLSS, MLVSS, ammonium nitrogen, phosphate-phosphorus, and TOC [20] Bioremediation (Constructed Wetlands) Municipal wastewater BOD 5 , COD, and nutrients (nitrogen and phosphorus) [21] Constructed Wetlands Domestic wastewater TSS, TDS, SO 4 -2 , PO 4 -3 , NO 3 , NO 2 bacterial counts and fecal pathogens [22] Trickling Biofilter System Municipal wastewater Ammonium nitrogen, BOD 5 , COD, and pathogen [23] Bio-Sorption Synthetic wastewater NH 4 + [24] Anaerobic Reactor and Fenton's Process Textile wastewater Color, COD, and turbidity [25] Constructed Wetlands Industrial wastewater EC, turbidity, COD, TSS, TDS, TS, nitrates, ammonia, phosphates, heavy metals (i.e., Cd, Ni, Hg, and Pb) [26] Bio-Sorption Textile wastewater COD, TDS, TSS, and color [27] Bio-Remediation Textile wastewater. BOD, COD, TOC, and cytotoxicity [28] Advanced Oxidation Processes Municipal wastewater BOD, COD, turbidity, conductivity, pH, and fecal coliform [29] Fixed Biomass and Sand Column Reactor Municipal wastewater Odor, alkalinity, pH, turbidity, BOD 5 , COD, TDS, TSS, EC, PO 4 , SO 4 , NO 3 , NO 2 , and DO [30] Membrane Bioreactor Synthetic wastewater Nutrients [31] Hybrid Constructed Wetland (HCW) Domestic wastewater NO 3 , NO 2 , BOD 5 , COD, SO 4, PO 4 , and pathogenic [32] Fixed Biofilm Reactor Municipal wastewater…”

mentioning

confidence: 99%