A Fuzzy Water Quality Index for Watershed Quality Analysis and Management

Lermontov, André; Yokoyama, Lídia; Lermontov, Mihail; Machado, Maria Augusta Soares

doi:10.5772/20316

Cited by 16 publications

(24 citation statements)

References 23 publications

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“…The WQIs are commonly used in either the classification of surface waters (Boyacıoglu, 2010;Lermontov et al, 2011) or the assessment of beneficial use (Said et al, 2004) and water pollution (Akkoyunlu and Akıner, 2012;Bakan et al, 2010;Kannel et al, 2007;Zhang and Zhang, 2007). For example, Pesce and Wunderlin (2000) calculated the objective WQI (WQI obj ) on 20 parameters and the minimum WQI (WQI min ) on three key parameters (dissolved oxygen, electrical conductivity or total dissolved solids, and turbidity) to assess the effect of urban discharge on a receiving river water quality.…”

Section: Issn: 2319-7706 Volume 7 Number 04 (2018)mentioning

confidence: 99%

Water Quality Index as a Tool for Assessment of Status of an Urban Lake of Mumbai

Usman¹,

Dube²,

Shukla³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Section: Issn: 2319-7706 Volume 7 Number 04 (2018)mentioning

confidence: 99%

Water Quality Index as a Tool for Assessment of Status of an Urban Lake of Mumbai

Usman¹,

Dube²,

Shukla³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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“…The presence of pollutants in the aquatic environment inhibits the penetration of light into the water bodies, creating an anoxic condition and destroying flora-fauna of the aquatic environment [1][2][3]. Thus, using water quality index (WQI) with international standard limits we can determine the water chemistry and hence the status of water pollution in these areas [4,5]. WQI method based on different modes of calculations has been widely developed by many authors to assess water quality of rivers all around the world like Hooghly River in India, Yellow River in China, Suquia River in Argentina, Amazonian rivers in Brazil and Beheshtabad River in Iran [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Assessment of urban river water quality and developing strategies for phosphate removal from water and wastewaters: Integrated monitoring and mitigation studies

et al. 2020

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In this work, the water quality status of the surface water that lies around the Karamana River basin, Trivandrum urban area, was studied on the basis of the water quality index (WQI) method. The eutrophic condition of the basin is revealed, and proper mitigation strategy was adopted for the removal of phosphate species using pillared clay materials. Proper sampling was carried out in the urban rivers, and various physico-chemical parameters for evaluating the quality of water were analysed. WQI values obtained for these riverine systems are in the range 317.7-3005.1, indicating that the water is not suitable without treatment for any domestic activities. Also, phosphate ions in the range 1.98-20.52 mg/L reflect the dominance of phosphate species in surface water. A proper mitigation strategy was adopted for the selective removal of phosphate ions using adsorption technique by using zirconium-pillared bentonite clay (ZPBC) prepared by the stirring-ageing technique. The batch adsorption experiment performed on simulated phosphate solution shows that for 2.0 g/L of ZPBC a maximum phosphate adsorption capacity of 35.71 mg/g was achieved in 30 min at pH 3.0. The data obtained were used to study models in kinetics and isotherm. The reusability of spent ZPBC for five continuous cycles without major loss in adsorption capacity using 0.025 M Na 2 CO 3 extractant was proved from the desorption study. A single-stage reactor was also designed from the isotherm data and proved to be effective. The applicability of the adsorbent towards phosphate anions was successfully checked in the laboratory using surface water collected and found that the complete removal of phosphate was achieved using 6.0, 8.0 and 10.0 g/L of ZPBC.Electronic supplementary material The online version of this article (https ://doi.org/10.1007/s4245 2-020-2571-0) contains supplementary material, which is available to authorized users.

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“…Fuzzy Logic Contoller has been used by many industrial applications and research. Some of the proposed applications are water quality index, temperature control, robot arm and control of grain dryer plant, to name a few [5][6][7][8]. In transportation, Fuzzy Logic Controller is worth to explore.…”

Section: Introductionmentioning

confidence: 99%

Design of travel angle control of quanser bench-top helicopter using mamdani-based fuzzy logic controller

Mansor

Esa

Gunawan

et al. 2020

IJEECS

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This research focuses on travel angle control of a laboratory scale bench-top helicopter developed by Quanser Inc. Bench top-helicopter is usually used by engineers and researchers to test their designed controllers before applying to the actual helicopter. Bench-top helicopter has the same behavior as the real helicopter, with 3 degree of freedom. The bench-top helicopter is mounted on a flat surface with two rotors that depends on the voltage supplied to change the direction of the helicopter in 3 different angles. The movement of the helicopter is based on the direction of three-different angles; travel, pitch and yaw angles. The existing Linear Quadratic Regulator-Integral controller used by Quanser Inc has some limitations in terms of tracking capability and settling time; therefore, this research is proposed. The objective of this research is to develop Mamdani-based Fuzzy Logic Controller for travel angle control of bench-top helicopter. Performance comparison has been done with the existing Linear Quadratic Regulator-Integral controller in both simulation and hardware. From the test results, it was found that the performance of Fuzzy Logic Controller is better than LQR-I controller especially for closed-loop simulation at desired angle of 30°. The percentage of overshoot of the Fuzzy Logic Controller has been improved from the existing controller which is 4.912% compared to 7.002% for LQR-I. Keywords:Bench-top helicopter Linear quadratic integral controller Mamdani-based fuzzy logic controller Travel angle control

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A Fuzzy Water Quality Index for Watershed Quality Analysis and Management

Cited by 16 publications

References 23 publications

Water Quality Index as a Tool for Assessment of Status of an Urban Lake of Mumbai

Water Quality Index as a Tool for Assessment of Status of an Urban Lake of Mumbai

Assessment of urban river water quality and developing strategies for phosphate removal from water and wastewaters: Integrated monitoring and mitigation studies

Design of travel angle control of quanser bench-top helicopter using mamdani-based fuzzy logic controller

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