Constructed wetland, an eco-technology for wastewater treatment: A review on types of wastewater treated and components of the technology (macrophyte, biolfilm and substrate)

Kataki, Sampriti; Chatterjee, Soumya; Vairale, Mohan G.; Dwivedi, Sanjai K.; Gupta, Dharmendra K.

doi:10.1016/j.jenvman.2021.111986

Cited by 179 publications

(42 citation statements)

References 275 publications

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“…An additional advantage is that any lethal compound taken inside the host might get degraded in planta by means of endophytes, thus decreasing the phytotoxic and toxic effects on herbivorous wildlife inhabiting near or on polluted locations (Ryan et al 2008). Kataki et al (2021) have recently reviewed the practical relevance and application of wetland-endophytic bacteria association as an eco-technology for treatment of wastewater. In another study, Rehman et al (2019) have proposed a technology based on floating wetlands and endophytic bacteria for treatment of wastewater.…”

Section: Why Endophytic Bacteria Are Boon For Degradation Of Organic Contaminants In Wetlandsmentioning

confidence: 99%

Recruiting endophytic bacteria of wetland plants to phytoremediate organic pollutants

Singh

Awasthi

Tiwari

2021

Int. J. Environ. Sci. Technol.

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The release of organic compounds in the aquatic environment, resulting from different human activities, is a serious hazard due to the toxic, hydrophobic and persistent nature of these compounds. Removing organic contaminants from aquatic systems is vital and is one of the major topics of research in the arena of environmental science. Pesticides, plasticizers, pharmaceuticals, petroleum hydrocarbons are the organic pollutants which are considered to be the emerging contaminants of concern. Phytoremediation is a process of contaminant removal using plants, to clean up surface waters, groundwaters, sediments and soils. Phytoremediation of organic contaminants can occur through plant uptake, plant enzymes or exudates, or by the contribution of rhizosphere and endophytic organisms. Of all these, endophytic bacteria play a major role in contaminant removal. Endophytic bacteria occupy the interior tissues of plant without instigating adverse outcome or pathogenicity to their host. The endophytic bacteria exhibiting contaminant degradation and growth-promoting activities in plants are meant for better phytoremediation. Also, recently wetlands have been anticipated as places for phytoremediation of contaminants. This review summarizes the activity and ability of endophytic bacteria of wetland plants to augment the competent process of phytoremediation of organic contaminants in water and discusses the mechanism followed by endophytic bacteria to enhance phytoremediation of organic contaminants. Understanding the mechanisms behind endophytic bacteria and wetland plant interaction is necessary to meet the complete biotechnological know-how of bacterial-plant associations for various uses.

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Section: Why Endophytic Bacteria Are Boon For Degradation Of Organic Contaminants In Wetlandsmentioning

confidence: 99%

Recruiting endophytic bacteria of wetland plants to phytoremediate organic pollutants

Singh

Awasthi

Tiwari

2021

Int. J. Environ. Sci. Technol.

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“…Nevertheless, many studies have reported significant treatment capacities of CWs for saline wastewater and therefore showed promising results for the management of saline effluents. For instance, treatment efficiency of CWs for tannery wastewater at pilot scale was about 41%–73% in terms of COD and 41%–58% in terms of BOD removal (Calheiros et al, 2007; Kataki et al, 2021). Also, the reduction percentage of nitrate and nitrite in treatment of saline wastewater from metallurgic industries was observed to be 70% and 60%, respectively, in both small‐scale and large‐scale CWs (Maine et al, 2006).…”

Section: Biological Treatment Technologiesmentioning

confidence: 99%

Current available treatment technologies for saline wastewater and land‐based treatment as an emerging environment‐friendly technology: A review

Marathe

Singh

Raghunathan

et al. 2021

Water Environment Research

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Different industrial activities such as agro‐food processing and manufacturing, leather manufacturing, and paper and pulp production generate highly saline wastewater. Direct discharge of saline wastewater has resulted in pollution of waterbodies by very high magnitudes. Consequently, an enormous number of pollutants such as heavy metals, salts, and organic matter are also released into the environment threatening the survival of human and biota. Saline wastewater also has significant effects on survival of plants, agricultural activities, and groundwater systems. Several treatments and disposal technologies are available for saline wastewater, but the selection of the most appropriate treatment and disposal technology still remains a major challenge with respect to the economic or technical constraints. Considering the sustainable management of saline wastewater, the present review is an attempt to compile the existing and emerging technologies for the treatment of saline wastewater. Among all the individual and hybrid technologies, land‐based treatment systems are proven to be the most efficient technologies considering the energy demands, economic, and treatment efficiencies. Likewise, new and sustainable technologies are the need of hour integrating both the treatment and management and the resource recovery factors along with the ultimate goal of the protection in terms of human health and environmental aspect. Practitioner points Physico‐chemical treatment technologies for saline wastewater. Combined/Hybrid technologies for the treatment of saline wastewater. Land‐based treatments as the environment friendly and sustainable method for saline wastewater treatment and disposal. Role of phytoremediation in land‐based treatment.

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“…Wastewater is generally a mixture of various organic and inorganic components which can generate by-products like H 2 during treatment. The different sources of wastewater can be domestic wastewater, landfill wastewater, industrial wastewater, refinery wastewater, livestock, and dairy wastewater to name a few [ 17 ]. The microbes and treatment technology used greatly depend on the substrate present in the wastewater.…”

Section: Introductionmentioning

confidence: 99%

Microbial electrolysis: a promising approach for treatment and resource recovery from industrial wastewater

et al. 2022

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Wastewater is one of the most common by-products of almost every industrial process. Treatment of wastewater alone, before disposal, necessitates an excess of energy. Environmental concerns over the use of fossil fuels as a source of energy have prompted a surge in demand for alternative energy sources and the development of sophisticated procedures to extract energy from unconventional sources. Treatment of municipal and industrial wastewater alone accounts for about 3% of global electricity use while the amount of energy embedded in the waste is at least 2–4 times greater than the energy required to treat the same effluent. The microbial electrolysis cell (MEC) is one of the most efficient technologies for waste-to-product conversion that uses electrochemically active bacteria to convert organic matter into hydrogen or a variety of by-products without polluting the environment. This paper highlights existing obstacles and future potential in the integration of Microbial Electrolysis Cell with other processes like anaerobic digestion coupled system, anaerobic membrane bioreactor and thermoelectric micro converter.

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Constructed wetland, an eco-technology for wastewater treatment: A review on types of wastewater treated and components of the technology (macrophyte, biolfilm and substrate)

Cited by 179 publications

References 275 publications

Recruiting endophytic bacteria of wetland plants to phytoremediate organic pollutants

Recruiting endophytic bacteria of wetland plants to phytoremediate organic pollutants

Current available treatment technologies for saline wastewater and land‐based treatment as an emerging environment‐friendly technology: A review

Microbial electrolysis: a promising approach for treatment and resource recovery from industrial wastewater

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