Assessment of the Efficiency of a Pilot Constructed Wetland on the Remediation of Water Quality; Case Study of Litani River, Lebanon

Amacha, Nabil; Karam, F.; Jerdi, Mey; Frank, P.M.; Viala, Eric; Hussein, Dareen; Kheireddin, Sara; Baydoun, Safaa

doi:10.4172/2573-458x.1000119

Cited by 6 publications

(15 citation statements)

References 12 publications

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“…The average removal efficiencies were 87.01 6 14.67% for COD, 64.99 6 4.85% for BOD 5 , 86.18 6 14.52% for TSS, 43.11 6 12.50% for NO 3 AN, 34.82 6 20.35% for NH 4 AN, 55.07 6 33.85% for PO 4 AP and 73.05 6 39.23% for K ( Table 3). Some of the results are different from those reported by Amacha et al (2017) who worked on the same wetland for the season extending from April 2014 till July 2015; particularly, the average removal efficiencies were 62.47% for NO 3 AN, 93.3% for NH 4 AN and 82.82% for PO 4 AP, higher than the values obtained in the current study. They show clearly that the performance of the wetland for the removal of physic-chemical contaminants is decreasing year after year, this could be mainly attributed to a bad maintenance of wetland vegetation.…”

Section: Physico-chemical Analyses Of Wetland Influent and Effluentcontrasting

confidence: 99%

“…They show clearly that the performance of the wetland for the removal of physic-chemical contaminants is decreasing year after year, this could be mainly attributed to a bad maintenance of wetland vegetation. Only the removal efficiency of BOD 5 (66.08%) was similar to that obtained by Amacha et al (2017). The results are also in agreement with the findings of El-Sheikh et al (2010) with removal rates of 52% BOD 5 , 87% TSS and 52% PO 4 for a free surface constructed wetland in Egypt.…”

Section: Physico-chemical Analyses Of Wetland Influent and Effluentsupporting

confidence: 88%

“…Only the removal efficiency of BOD 5 (66.08%) was similar to that obtained by Amacha et al . (). The results are also in agreement with the findings of El‐Sheikh et al .…”

Section: Resultsmentioning

confidence: 97%

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Assessing the performance of constructed wetland for water quality management of a Southern Mediterranean river

Saab

Jammoul

Makhlouf

et al. 2018

Water & Environment J

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Most of Southern Mediterranean water courses suffer from numerous types of pollution. This study presents a comprehensive performance assessment of a pilot CW system for removing various contaminants from the Litani River, Lebanon. The physico‐chemical, pathogens and trace metal parameters were analyzed for river water as well as for the wetland effluent. Results revealed that the average removal efficiencies were 87.01% for COD, 64.99% for BOD5, 86.18% for TSS, 43.11% for NO3N, 34.82% for NH4N, 55.07% for PO4P and 73.05% for K. The removal efficiency of faecal coliforms was around 99.84%. Influent and effluent heavy metal pollution (Cu, Pb, As and Ni) concentrations greatly exceeded the range of the environmental limit values due to industrial emissions in river water. CWs seem to be a promising green technology for Lebanon for the reduction of bacterial contamination. Further studies are required to improve treatment modules for different pollutants, including metals.

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Section: Physico-chemical Analyses Of Wetland Influent and Effluentcontrasting

confidence: 99%

Section: Physico-chemical Analyses Of Wetland Influent and Effluentsupporting

confidence: 88%

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Assessing the performance of constructed wetland for water quality management of a Southern Mediterranean river

Saab

Jammoul

Makhlouf

et al. 2018

Water & Environment J

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“…Consequently, the efficiency of the wetland system in phytoremediation and/or the competence of the macrophytes can be affected by different climatic conditions, soil type or aquatic biodiversity [25]. Both natural and constructed wetlands are worldwide considered as a cost-effective and an alternative technology for polluted water and wastewater treatment, they have been increasingly used to successfully remove pollutants from domestic and industrial effluents [11,14,26,27]. Macrophytes used in phytoremediation in CW systems can diverge to various types based on their adaptations to life in water.…”

Section: Natural and Constructed Wetlands In Phytoremediationmentioning

confidence: 99%

“…Wetland plants can take up heavy metals and nutrients through root systems and accumulate them in the biomass reducing therefore the concentrations of these polluting elements. The common reed (Phragmites australis) and cattail (Typha angustifolia) can uptake and accumulate a large amount of nutrients and heavy metals in their below and above water , 0 [13,26,30] (Table 1). In CWs, phytoremediation plant species are able to absorb multiple pollutants simultaneously because pollution rarely occurs as a single chemical and grow fast [11].…”

Section: Macrophytes For Phytoremediationmentioning

confidence: 99%

Phytoremediation of Lebanese polluted waters: a review of current initiatives

2019

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Water pollution is presently considered as a serious apprehension in Lebanon. Heavy contamination load of nutrients, heavy metals and organic pollutants can be highly harmful for human health and detrimental to aquatic life and ecosystems. Phytoremediation in natural and constructed wetlands using aquatic macrophytes present a sustainable plant-based technology recognized as a very efficient option in water treatment. The employment of species such as Phragmites, Sparganium, Lemna sp and other aquatic macrophytes not only helps in pollution cleanup but also conserves aquatic communities. To date, two pilot constructed wetlands, Litani River and Bcharreh have been established in Lebanon. These promising initiatives have been, however, accompanied with very limited research studies to examine the role of utilized plants and their efficiency in the remediation process. This paper presents an overview of the status of these initiatives and phytoremediation potential in Lebanon.

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In vitro proliferation of Lebanese Lemna minor and Lemna gibba on different nutrient media

Ghanem

Haddad

Baydoun

et al. 2019

Journal of Taibah University for Science

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This study aimed to assess the ability of two Lebanese duckweed species, (Lemna minor and L. gibba), to grow under in vitro conditions on three nutritive solutions, Murashige Skoog (MS), Schenk-Hildebrand (SH) and Algal Assay Procedure (AAP). Plant growth of both species, expressed as doubling time, differed significantly (p < .05) between the tested media with best results obtained on SH for L. minor after 7 days of culture and on AAP for L. gibba after 2.7 days for both species. Growth index was significantly higher (P < .05) for L. minor on SH reaching 41.6 after 21 days of culture whereas L. gibba exhibited its highest growth index of 15.51 on AAP. These results indicate the efficiency of SH and AAP media in promoting the vegetative proliferation of L. minor and L. gibba to further provide a good source of duckweed material for phytoremediation applications.

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Assessment of the Efficiency of a Pilot Constructed Wetland on the Remediation of Water Quality; Case Study of Litani River, Lebanon

Cited by 6 publications

References 12 publications

Assessing the performance of constructed wetland for water quality management of a Southern Mediterranean river

Assessing the performance of constructed wetland for water quality management of a Southern Mediterranean river

Phytoremediation of Lebanese polluted waters: a review of current initiatives

In vitro proliferation of Lebanese Lemna minor and Lemna gibba on different nutrient media

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