Application of a <i>vetiver</i> system for unconventional water treatment

Keshtkar, A.R.; Ahmadi, Mitra; Naseri, Hamid Reza; Atashi, H.; Hamidifar, Hossein; Razavi, Seyed Mohammad Ali; Yazdanpanah, Arshad; Reihan, Majid Karimpour; Moazami, N.

doi:10.1080/19443994.2016.1157043

Cited by 14 publications

(4 citation statements)

References 28 publications

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“… Mane et al (2011) show increased root and shoot length in the presence of saline conditions, which can be positively correlated with the findings of our study. The findings of Keshtkar et al (2016) were also similar to the findings of the present study.…”

Section: Resultssupporting

confidence: 91%

“…Percentage increase in root length was as follows: 342% (T4), 328% (T3), 266% (T2), 247% (T5), and 241% (T1). Similar results are also reported by Keshtkar et al (2016). Plant height and number of new shoots show similar values as compared with the findings of Coung et al (2015); however, the root length was higher in our study (above 80 cm) in all the treatments in comparison with the study of Cuong et al (2015), i.e., only 10 cm.…”

Section: Assessment Of Plant Growth Fed With Wastewatersupporting

confidence: 92%

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A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

et al. 2021

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The present study focuses on determining the phyto-treatment efficiency for treatment of moderately saline wastewater using organic raw materials, such as rice husk, coconut husk, rice straw, and charcoal. The moderately saline wastewater with total dissolved solids (TDS) concentration up to 6143.33 ± 5.77 mg/L was applied to the lysimeters at the rate of 200 m3 ha–1 day–1 in five different lysimeter treatments planted with Eucalyptus camaldulensis (T1, T2, T3, T4, and T5). T1 was a control without any filter bedding material, whereas rice straw, rice husk, coconut husk, and charcoal were used as filter bedding materials in the T2, T3, T4, and T5 treatment systems, respectively. Each treatment showed significant treatment efficiency wherein T3 had the highest removal efficiency of 76.21% followed by T4 (67.57%), T5 (65.18%), T2 (46.46%), and T1 (45.5%). T3 and T4 also showed higher salt accumulation, such as sodium (Na) and potassium (K). Further, the pollution load in terms of TDS and chemical and biological oxygen demand significantly reduced from leachate in the T3 and T4 treatments in comparison with other treatments. Parameters of the soil, such as electrical conductivity, exchangeable sodium percentage, and cation exchange capacity did not show values corresponding to high salinity or sodic soils, and therefore, no adverse impact on soil was observed in the present study. Also, Eucalyptus camaldulensis plant species showed good response to wastewater treatment in terms of growth parameters, such as root/shoot weight and nitrogen, phosphorus, and potassium (NPK) uptake, plant height, biomass, and chlorophyll content. Root and shoot dry weight were in the order T3 (51.2 and 44.6 g)>T4 (49.3 and 43.5 g) > T5 (47.6 and 40.5 g) > T2 (46.9 and 38.2 g) > T1 (45.6 and 37.1 g). Likewise, the total chlorophyll content was highest in T3 (12.6 μg/g) followed by T4 (12.3 μg/g), T5 (11.9 μg/g), T2 (11.5 μg/g), and the control, that is, T1 (11.0 μg/g). However, the most promising results were obtained for T3 and T4 treatments in comparison with the control (T1), which implies that, among all organic raw materials, coconut and rice husks showed the highest potential for salt accumulation and thereby wastewater treatment. Conclusively, the findings of the study suggest that organic raw material–based amendments are useful in managing the high salts levels in both plants and leachates.

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Section: Resultssupporting

confidence: 91%

Section: Assessment Of Plant Growth Fed With Wastewatersupporting

confidence: 92%

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

et al. 2021

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“…The potential of vetiver grass in wastewater treatment was analysed by Maharajan and his team [26] and the results of the study showed that treating of waste water by vetiver grass can reduce the overall concentration of chloride nitrate total hardness and alkalinity by 42.90%, 93.93%, 46.4% and 22.2% respectively. It can also lower the parameters such as chloride, sulphate, calcium; magnesium and iron [26][27][28]. This could be the reason for the drastic change in the parameters of water after treatment.…”

Section: Discussionmentioning

confidence: 99%

Fabrication of potable and eco-friendly solar disinfection (sodis) unit and its performance analysis

Malavika¹,

Shobana²

2021

krj

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Solar disinfection (SODIS) is a technique, which involves utilization of solar energy to make safe drinking water from biologically contaminated water. In the conventional SODIS method, the PET bottles are filled with polluted water and exposed to the sunlight for a certain period depending upon the local weather conditions. However much more effective disinfection system is needed to overcome the problems of inefficient utilization of available solar energy and the health risk posed by treating the water using chemicals during the purification process. Hence, the present work aims in designing a portable solar disinfection unit that can efficiently use solar energy by manually adjusting the unit according to sunlight availability. Along with it, incorporation of the additional eco-friendly unit with water purifying plants Vetiveria zizanioides (Vetiver) and Hemidesmus indicus (Nannari) is done to achieve high efficiency in producing potable water from biologically contaminated water. The contaminated water samples treated in the solar disinfection unit and eco-friendly water purifying unit are analyzed for the presence of total coliforms and E-coli by using the Most probable Number method and P/A analysis, respectively. A reduction in 99.74% of total coliform count and absence of E-coli was observed in the treated water samples. The physicochemical analysis was carried out to ensure the suitability of treated water for consumption and the results revealed a notable reduction in the parameters, and all the parameters came under the permissible range of IS drinking water characteristics. The designed system can be used to disinfect the contaminated water sample most efficiently, thereby making the water suitable for consumption.

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“…Vetiver grass is belongs to the Poaceae family and it is native to south and south-east Asia [4].Vetiver grass has been widely utilized across the world to stabilize riverbanks and slopes, reduce soil erosion, and promote ecological restoration in addition to environmental cleanup [5]. Vetiver grass is renowned for its quick development, extensive root system, tolerance of hazardous contaminants, resistance to adverse environmental circumstances, and rapid growth [6]. According to reports, vetiver may remove hazardous heavy metal contamination from water and soil [7].…”

Section: Introductionmentioning

confidence: 99%

Vetiver Floating Wetlands for Dyeing Effluent

Aarthy

Banu²,

Karthikeyan³

et al. 2022

IJECC

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As a result of industrialization, the degree of global water contamination has drastically grown in recent decades. Both rich and developing nations are seeing this worldwide trend, although the later are experiencing it more pronouncedly. Due to its extraordinary and distinctive morphological and physiological characteristics, the Vetiver Floating Wetlands (VFWs), which is based on Vetiver grass (Chrysopogon zizanioides), has been successfully used as a phytoremediation tool to remediate both polluted water like municipal wastewater such as sewage effluent, landfill leachate, urban runoff, drainage channels, industrial wastewater such as food processing factories, and contaminated land (mine overburden and tailings, solid waste dumps). This study focuses on the use of hydroponics and floating wetlands to clean contaminated dyeing effluent. This study aims to find the efficiency of Vetiver Floating wetlands over various physio-chemical parameters in Dyeing effluent. The study was laid down in Tamil Nadu Agricultural University, Coimbatore in 2022 during the month of April- May. The effluent was diluted to different concentrations namely 25%, 50%, 75% and 100%. Various parameters were analyzed in these treatments in Dyeing effluent. The samples were collected at 15 days interval analyzed for one month. In Dyeing effluent, 50% concentration of the effluent showed better results over Vetiver Floating Wetlands and the removal efficiency was greater at this particular concentration.

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Application of a vetiver system for unconventional water treatment

Cited by 14 publications

References 28 publications

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

A Modified Lysimeter Study for Phyto-Treatment of Moderately Saline Wastewater Using Plant-Derived Filter Bedding Materials

Fabrication of potable and eco-friendly solar disinfection (sodis) unit and its performance analysis

Vetiver Floating Wetlands for Dyeing Effluent

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