The effect of activated carbon dosage on the adsorption efficiency of pollutants in water can be described as follows:1. Increased adsorption capacity: As the dosage of activated carbon increases, the available surface area and adsorption sites for pollutants also increase. This leads to a higher adsorption capacity, which means more pollutants can be removed from the water.2. Enhanced adsorption efficiency: With a higher dosage of activated carbon, the adsorption efficiency generally increases. This is because there are more adsorption sites available for the pollutants to bind to, leading to a higher percentage of pollutants being removed from the water.3. Faster adsorption rate: A higher dosage of activated carbon can also lead to a faster adsorption rate, as there are more adsorption sites available for the pollutants to bind to. This can result in a quicker reduction of pollutant concentrations in the water.4. Diminishing returns: However, there is a point of diminishing returns when it comes to increasing the dosage of activated carbon. As the dosage increases, the adsorption efficiency may not continue to increase proportionally. This is because the activated carbon particles can start to aggregate, reducing the available surface area for adsorption. Additionally, some adsorption sites may remain unoccupied due to the limited number of pollutants in the water.5. Increased cost and waste: Using a higher dosage of activated carbon can also lead to increased costs and waste generation. The cost of activated carbon and the disposal of spent activated carbon can become significant factors to consider when determining the optimal dosage for a specific application.In summary, increasing the dosage of activated carbon can lead to higher adsorption capacity, enhanced adsorption efficiency, and faster adsorption rates. However, there is a point of diminishing returns, and the increased cost and waste generation must be considered when determining the optimal dosage for a specific application.