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COAL ASH - Coggle Diagram
COAL ASH
ABSTRACT
Removal of organics
Activated by conc. sulfuric acid
Granulated using pulverizer
Batch and continuous process
static and dynamic adsorption
Continuous adsorption tests
AIM
Obtained from burnt coal
INTRODUCTION
Increase in demand for coal
Accumulation of coal ash in landfills
Reuse of coal ash
Coal ash as effective adsorbent of organics
Permissible discharge of COD values
Coal ash not being used at its optimum
4 main classes of adsorbent
Commercial carbon sources
Aims and objectives
LITERATURE REVIEW
Types of adsorption mechanisms
Used as low concentration pollutants only
Determination of effectiveness of granulated coal ash
Adsorbate and Adsorbent
Adsorption independent on several factors
Breakthrough time and curves
Isotherm models
Determination of order of reaction by kinetics
Factors affecting adsorption
Lack of info on coal ash and its effect
METHODOLOGY
Analysis
Preparation
Pulverising and Sieving
Activation
Calibration of pump
Batch adsorption model
Continuous adsorption process
COD test
RESULTS AND DISCUSSION
Batch adsorption results
Continuous isotherm models
Kinetic models
Effect of varying concentration
Independent and SPSS tests done
CONCLUSION
Develop packed beds
Difficulty convincing usage of activated coal ash
Importance of further investigation
Bohart Adams model due to R^2
Removal capacity
Activated charcoal is good adsorbent
Second order kinetics- Subramani work