scholarly journals Kinerja Metode Elektroflotasi pada Pengolahan Air Limbah Pewarna Tekstil Dispersi

2021 ◽  
Vol 5 (2) ◽  
pp. 105-115
Author(s):  
Haryono Haryono ◽  
Keyword(s):  
Electric Potential ◽  
Textile Industry ◽  
Separation Efficiency ◽  
Energy Requirement ◽  
Textile Wastewater ◽  
Electrical Energy ◽  
Potential Difference ◽  
Disperse Dyes ◽  
Textile Dye ◽  
Electric Potential Difference

Disposal of textile wastewater above the maximum quality standard into the environment will cause many negative impacts on the ecosystem in the environment. The textile industry utilizes about 2/3 of the total dye products. About 10-15% of the use of these dyes is wasted as waste water. Dispersion dyes are a type of synthetic dye that is relatively widely used in the textile industry. Disperse dyes are insoluble in water and have relatively high chemical resistance. One of the suitable methods applied to treat textile dye dispersion wastewater is electroflotation. Electroflotation works on the basic principle of an electrolytic cell. The performance of electroflotation is influenced by several factors, including the difference in electric potential and the length of time for electroflotation. The purpose of this study was to study the effect of electric potential difference and processing time on the performance of the electroflotation method in textile dye dispersion wastewater treatment. In this study, the electroflotation performance was measured based on the ability of the method to reduce the COD (Chemical Oxygen Demand) value and the color level of the treated textile wastewater. In addition, the specific electrical energy requirements and the value of the decrease in dye concentration per unit of electrical energy are also calculated. The results showed that the optimum conditions for electroflotation were achieved by using an electric potential difference of 12 V and an electroflotation time of 60 minutes. Under these conditions, the COD value and color level of textile wastewater can be reduced with separation efficiency of 88.9% and 93.3%, respectively, with a specific electrical energy requirement of 200 kWh/m3. Meanwhile, the decreasing value of dye concentration per kWh of electrical energy based on COD value and color level were 16293.3 ppm/kWh and 23333.3 Pt-Co/kWh, respectively

scholarly journals Electric potential differences across auroral generator interfaces

2013 ◽  
Vol 31 (2) ◽  
pp. 251-261 ◽  
Author(s):  
J. De Keyser ◽  
M. Echim
Keyword(s):  
Electric Field ◽  
High Altitude ◽  
Electric Fields ◽  
Electric Potential ◽  
Equilibrium Configuration ◽  
Potential Difference ◽  
Field Profile ◽  
Electric Potential Difference ◽  
Electric Field Profile

Abstract. Strong localized high-altitude auroral electric fields, such as those observed by Cluster, are often associated with magnetospheric interfaces. The type of high-altitude electric field profile (monopolar, bipolar, or more complicated) depends on the properties of the plasmas on either side of the interface, as well as on the total electric potential difference across the structure. The present paper explores the role of this cross-field electric potential difference in the situation where the interface is a tangential discontinuity. A self-consistent Vlasov description is used to determine the equilibrium configuration for different values of the transverse potential difference. A major observation is that there exist limits to the potential difference, beyond which no equilibrium configuration of the interface can be sustained. It is further demonstrated how the plasma densities and temperatures affect the type of electric field profile in the transition, with monopolar electric fields appearing primarily when the temperature contrast is large. These findings strongly support the observed association of monopolar fields with the plasma sheet boundary. The role of shear flow tangent to the interface is also examined.

Effect of electromagnetically driven liquid metal flows on the electric potential difference in a cuboid vessel

2021 ◽  
Vol 483 ◽  
pp. 229162
Author(s):  
Tania L. Aguilar-García ◽  
Michel Rivero ◽  
José Núñez ◽  
Ismeli Alfonso ◽  
Alberto Beltrán
Keyword(s):  
Liquid Metal ◽  
Electric Potential ◽  
Potential Difference ◽  
Electric Potential Difference

scholarly journals A green approach for the treatment of dye and surfactant contaminated industrial wastewater

2020 ◽  
Vol 80 (3) ◽  
pp. 615-620
Author(s):  
Ü. D. Gül
Keyword(s):  
Textile Industry ◽  
Industrial Wastewater ◽  
Biological Treatment ◽  
Textile Wastewater ◽  
Textile Dye ◽  
Synthetic Dyes ◽  
Dye Molecules ◽  
Acid Dyes ◽  
Green Approach ◽  
Excellent Color

Abstract Synthetic dyes, particularly reactive and acid dyes, are commonly used in the textile industry because of their advantages as excellent color fastness and brightness. Also, surfactants are used for an increment of coloring success in the textile industry. One of the major problems concerning textile wastewater is the treatment of the effluents containing both dyes and surfactants. Biological treatment systems are recommended as useful, economic and eco-friendly methods for treatment of industrial wastewater. The purpose of this study was to investigate the binary removal of a textile dye and a surfactant by growing Aspergillus versicolor culture in molasses medium. The effect of dye and surfactant concentration on the removal of dye and surfactant was determined. This study resulted that 100% of the surfactant and dye molecules removed together with the formation of a dye-surfactant complex by fungus. It is concluded that binary removal systems are very efficient for industrial wastewater treatment.

Sign in / Sign up

Export Citation Format

Share Document