Effectiveness of Vetiver System for the Treatment of Wastewater from an Institutional Kitchen

Mathew, Mini; Rosary, Sr. Claramma; Sebastian, Mathukutty; Cherian, Sandra Maria

doi:10.1016/j.protcy.2016.05.028

Cited by 19 publications

(9 citation statements)

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“…In another study, Islam et al [28] also indicated that Vetiver root grew up to 0.9 m in pure sand soil within three months. This tendency of root growth increased the soil cohesion, but it also absorbed the soil moisture, nutrients, and other pollutants present in the soil layer [24,29]. Current results proved that the roots of the Vetiver grass penetrated up to a depth of 3-4 m in the soil and increased the soil cohesion, enhancing the stability of the river bank.…”

Section: Slope Stability Effectmentioning

confidence: 78%

An Investigation on Performance and Structure of Ecological Revetment in a Sub-Tropical Area: A Case Study on Cuatien River, Vinh City, Vietnam

Tang

Binh

et al. 2018

Water

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Abstract:The current study was performed with an aim to investigate the performance of ecological revetments implemented on the bank of the Cuatien River in Vinh city, Vietnam. Based on the ecological, topographical, and hydrological conditions of the Cuatien River, the gabion and riprap models were introduced to investigate the effect of ecological revetment on the slope stability and ecological restoration characteristics. The effect of prevailing climatic indicators, such as temperature, precipitation, sunlight hours, and humidity were investigated to ascertain the characteristics of weather conditions on the subtropical area. On the surface soil layer of the gabion and riprap, the nutrient indicators of soil organic matter (SOM) and available nitrogen (AN) increased in the spring, summer, and winter, but decreased in autumn, and available phosphorus (AP) did not show an obvious change in the four seasons. The biomass growth rate of Vetiver grass on the gabion and riprap revetments was found to be the highest during the summer, at 15.11 and 17.32 g/month, respectively. The root system of Vetiver and other native plants could increase the cohesion of soil. After 6 and 12 months, the shear strength of the soil behind the gabion revetment increased by 59.6% and 162.9%, while the shear strength of the soil under the riprap also increased by 115.6% and 239.1%, respectively. The results also indicated that the gabion and riprap revetments could improve the river water purification effect and increase the ecological diversity in the region. In the current study, 26 floral and 9 faunal species were detected in the riprap revetment, whereas 14 floral and 5 faunal species were detected in the gabion revetment, respectively. Through high sequencing technology, the number of bacterial species in the present study was found to be 198, 332, and 351 in the water, gabion, and riprap samples, respectively.

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Section: Slope Stability Effectmentioning

confidence: 78%

An Investigation on Performance and Structure of Ecological Revetment in a Sub-Tropical Area: A Case Study on Cuatien River, Vinh City, Vietnam

Tang

Binh

et al. 2018

Water

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“…After 15 days, it is possible to evaluate the efficiency in the removal of arsenic with Vetiver grass at different biomasses (5 kg, 10 kg, 15 kg, 20 kg, 25 kg) obtaining removal of up to 40 % for arsenic (Smolcz et al, 2015). The parameters: pH, turbidity, alkalinity, OD, fecal coliforms (Mathew et al, 2016), DBO 5 , suspended solid DQO, color removal (Charoenlarp et al, 2016) and mainly As (Singh et al, 2017) in various types of effluents, they are regulated by the processes that occur at their roots. In this sense, due to their high tolerance towards various types of pollutants, the IFAs with Vetiver grass are installed in rivers to improve water quality; for example, Kusin et al (2019) through the implementation of this system, verified a 14 % increase in the water quality index (WQI) in polluted rivers.…”

Section: Artificial Floating Islands (Ifa) With Vetiver Grassmentioning

confidence: 99%

Phytoremediation of arsenic-contaminated waters by artificial floating island: literature review

Fonseca

Depablos²,

Espitia

et al. 2020

RevFacAgron(LUZ)

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Water is the main way arsenic (As) can ge tinto the human body causing irreversible health damage such as poisoning, skin lesions and various types of cancer. One strategy for addressing pollution of arsenic in aquatic ecosystems is artificial floating islands (IFA) using Vetiver grass (Chrysopogon zizanioides). The objective of this study was to review 45 publications on the fundamentals of construction, implementation, description of decontamination mechanisms, characterization of macrophyte species and final disposal of plant material. Also, some mathematical models that can be applied to quantify removal rates and system efficiency were reviewed. Based on the literature reviewed, it is concluded that Vetiver grass is an effective alternative in removing As and its effect can be amplified by implementing an artificial floating bed. The importance of this relatively new ecotechnology requires further research in the field.

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“…Moreover, it was reported that vetiver presented reasonable removal efficiencies 62% for BOD 5 (Minh Tran et al 2015) for domestic wastewater treatment, 80 to 85% for BOD and 85 to 90% of COD (Mathew et al 2016) for institutional kitchen wastewater treatment.…”

Section: Removal Of Bod 5 and Codmentioning

confidence: 99%

Bioremediation of brewery wastewater using hydroponics planted with vetiver grass in Addis Ababa, Ethiopia

Abebe

Tefera

Kloos

et al. 2018

Bioresour. Bioprocess.

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Background: Bioremediation is the use of biological interventions for mitigation of the noxious effects caused by pollutants in the environment including wastewater. It is very useful approach for a variety of applications in the area of environmental protection. It has become an attractive alternative to the conventional cleanup technologies that employ plants and their associated microorganisms to remove, contain, or render harmless environmental contaminants.Methods: Three parallel hydroponic treatment systems (each 2 m long × 0.75 m wide × 0.65 m deep) and one control unit were filled with brewery wastewater to an effective depth of 0.5 m. Two sets of floating polystyrene platform were used for each treatment unit to support vetiver tillers for conducting bioremediation study. The wastewater was fed to the hydroponic treatment units at hydraulic loading rate of 10 cm d −1 and hydraulic residence time of 5 days. Influent and effluent samples were collected once a month for 7 months, and analyzed to determine the various parameters relating to the water quality including plant growth and nutrient analyses.Results: Vetiver grass grew and established with well-developed root and shoots in the hydroponics under fluctuations of brewery wastewater loads and showed phytoremedial capacity to remove pollutants. Removal efficiencies for BOD 5 and COD were significant (p < 0.05), up to 73% (748-1642 mg l −1 inlet), and up to 58% (835-2602 mg l −1 inlet), respectively. Significant removal efficiencies (p < 0.05) ranged from 26 to 46% (14-21 mg l −1 inlet) for TKN, 28-46% (13-19 mg l −1 inlet) for NH 4 + -N, 35-58% (4-11 mg l −1 inlet) for NO 3 − -N, and 42-63% (4-8 mg l −1 inlet) for PO 4 −3 -P were recorded. Nutrient accumulation in the samples harvested were varied between 7.4 and 8.3 g N kg −1 dry weight and 6.4-7.5 g P kg −1 dry weight in the hydroponic treatment units during the study period. Conclusions:This study has shown suitability of vetiver grass for organics and nutrient removal in the bioremediation of brewery wastewater using hydroponics technique in addition to production of valuable biomass. Bioremediation using hydroponics is green and environmentally sustainable approach that offers promising alternative for wastewater treatment in developing countries including Ethiopia.

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Effectiveness of Vetiver System for the Treatment of Wastewater from an Institutional Kitchen

Cited by 19 publications

References 0 publications

An Investigation on Performance and Structure of Ecological Revetment in a Sub-Tropical Area: A Case Study on Cuatien River, Vinh City, Vietnam

An Investigation on Performance and Structure of Ecological Revetment in a Sub-Tropical Area: A Case Study on Cuatien River, Vinh City, Vietnam

Phytoremediation of arsenic-contaminated waters by artificial floating island: literature review

Bioremediation of brewery wastewater using hydroponics planted with vetiver grass in Addis Ababa, Ethiopia

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