PARAMETRIC ANALYSIS OF LIQUID STORAGE TANKS BASE ISOLATED BY DOUBLE CONCAVE FRICTION PENDULUM SYSTEM
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN STRUCTURAL, CIVIL AND ENVIRONMENTAL ENGINEERING
Author(s): AFSHIN MELLATI , FARAMARZ KHOSHNOUDIAN , MILAD FALLAHIAN , MOHAMMAD HADIKHAN TEHRANI
Abstract: In recent years using of base isolation systems due to improve in seismic performance of liquid storage tank was expanded. In this paper, the seismic behavior of the Liquid storage tank supported on DCFP isolation system under seven ground motions was investigated. The effects of essential parameters including slender of tank, period and coefficient of friction of the isolation system were investigated. In the parametric study, mass of liquid was idealized as convective mass, impulsive mass and rigid mass. In this analysis simplified three-degree freedom model to represent flexural and rocking vibrations of the tank was used. The results represent increasing of the slender ratio increases base shear and isolators forces and affects slightly on drift and isolation displacement. It is also shown that the period of isolators affects significantly on relative displacement of convective mass and isolators are remarkable.
- Publication Date: 05-May-2013
- DOI: 10.15224/978-981-07-6261-2-85
- Views: 0
- Downloads: 0
BIOSORPTION OF HAZARDOUS AZO DYE METANIL YELLOW USING IMMOBILIZED AQUATIC WEED
Published In: INTERNATIONAL CONFERENCE ON FUTURE TRENDS IN STRUCTURAL, CIVIL, ENVIRONMENTAL AND MECHANICAL ENGINEERING
Author(s): A.B.SATHYA , R.SIVASHANKAR , SREEDA PALLIPAD , V.SIVASUBRAMANIAN
Abstract: Release of coloured textile effluent in to aquatic environment is detrimental as they prevent penetration of light in to water, thereby affecting aquatic life and creates harmful water. Biosorption is an alternative treatment available other than physicochemical and biological methods to treat these toxic effluents. This study investigates the potential of water hyacinths to adsorb hazardous azo dye metanil yellow from aqueous solution. Metanil Yellow, is a widely used toxic dye containing one or more azo bonds (-N=N-). Metanil Yellow is used in number of industries such as textile, dyeing, food, cosmetics, paper printing industries and with textile industries as large consumers. Biosorption process was carried out using immobilized dead aquatic weeds. The influences of adsorption parameters such as initial dye concentration, pH, contact time, adsorbent dosage, agitation speed, and temperature were evaluated and optimized. Further the mechanism of biosorption earned good fits for Langm
- Publication Date: 14-Jul-2013
- DOI: 10.15224/978-981-07-7021-1-72
- Views: 0
- Downloads: 0