Application of modified tap water treatment sludge as a phosphorus adsorbent in aerobic wastewater treatment systems affected by eutrophication from cyanobacteria

Authors

  • Anootsara Sarak Technical Laboratory Scientist, College of Medicine and Public Health, Ubon Ratchathani University
  • Phairo Saenwang Laboratory Scientist, College of Medicine and Public Health, Ubon Ratchathani University

Keywords:

Modified tab water treatment sludge, Adsorbent, Phosphorus, Cyanobacteria

Abstract

This research aims to study the impact of initial pH levels on the phosphorus adsorption capacity and to create an adsorbent from modified tap water treatment sludge capable of removing phosphorus from wastewater in treatment systems affected by cyanobacteria-induced eutrophication. The adsorbent was prepared from used water treatment sludge, which was calcined at 600°C for 10 hours, followed by grinding and sieving to obtain a particle size of 270 µm. The phosphorus adsorption capacity of this adsorbent was tested with phosphorus concentrations ranging from 50 to 500 mgP/L and pH levels from 3 to 11 over 72 hours. The phosphorus content in the form of orthophosphate was analyzed using the ascorbic acid method, with three replicates per experiment. The results showed that the modified tap water treatment sludge adsorbent had a specific surface area of 19.59 m²/g and a total pore volume of 0.079 m³/g. The key heavy metal components affecting adsorption included aluminum, iron, and calcium. When the initial phosphorus concentration was 500 mgP/L and the pH was neutral at 7-9, the maximum phosphorus adsorption values were 13.71 and 12.85 mgP/L, respectively. The researchers found these conditions to be the most optimal for phosphorus adsorption in this wastewater. Therefore, modified tap water treatment sludge can be effectively used as an adsorbent for phosphorus removal from wastewater.

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Published

2024-12-16

How to Cite

Sarak, A., & Saenwang, P. (2024). Application of modified tap water treatment sludge as a phosphorus adsorbent in aerobic wastewater treatment systems affected by eutrophication from cyanobacteria. Journal of Medicine and Public Health, Ubon Ratchathani University, 7(3), 185–196. Retrieved from https://he01.tci-thaijo.org/index.php/jmpubu/article/view/271499

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Research Articles