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

Jae-Hyun Kim, Jeong-Ann Park, Song-Bae Kim

Environmental Biocolloid Engineering Laboratory, Seoul National University, Seoul, Korea.

Water science and technology : a journal of the International Association on Water Pollution Research 2012

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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.

Citation

Jae-Hyun Kim, Jeong-Ann Park, Song-Bae Kim. Mg/Al layered double hydroxide for bacteriophage removal in aqueous solution. Water science and technology : a journal of the International Association on Water Pollution Research. 2012;66(4):761-7