Mg/Al layered double hydroxide for bacteriophage removal in aqueous solution

• Published in: Water science and technology 2012-01, Vol.66 (4), p.761-767
• Main Authors: Kim, Jae-Hyun, Park, Jeong-Ann, Kim, Song-Bae
• Format: Article
• Language: English
• Subjects: Aluminum; Aluminum Hydroxide; Bacteria; Bacteriophage phi X 174 - isolation & purification; Bacteriophages; Capacity; Coating effects; Coatings; Drug Combinations; Experiments; Hydroxides; Levivirus - isolation & purification; Magnesium; Magnesium Hydroxide; Phages; Powder; Quartz; Removal; Sand; Viruses; Water Pollutants - isolation & purification; Water Purification - methods; Water treatment
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.2012.239

The objective of this study was to investigate the removal of bacteriophages in Mg/Al layered double hydroxide (LDH). Batch experiments were performed with bacteriophage MS2 in a powder form of Mg/Al LDH under various LDH doses. Column experiments were also performed under flow-through condition with bacteriophages MS2 and phiX174 in Mg/Al LDH immobilized on sand surfaces. Batch tests demonstrated that the powder form of Mg/Al LDH was effective in removing MS2 with the removal capacity of 2.2 × 10(8) plaque forming unit (pfu)/g under the given experimental conditions (LDH dose = 2 g/L; initial MS2 concentration = 4.61 × 10(5) pfu/mL). Column experiments showed that the log removal of phiX174 was 4.40 in columns containing 100% Mg/Al LDH-coated sand while it was 0.05 in 100% quartz sand. These findings indicated that Mg/Al LDH-coated sand was effective in removing bacteriophages compared with sand. A more than 4 log removal (=5.44) of MS2 was achieved in 100% Mg/Al LDH-coated sand. This study demonstrates the potential application of Mg/Al LDH for virus removal in water treatment.