Boehmite and Akaganeite 1D and 2D Mesostructures: Synthesis, Growth Mechanism, Ageing Characteristics and Surface Nanoscale Roughness Effect on Water Purification

Table 2

Removal efficacy of MS2 virus and RT bacteria by a mixture of equal size but opposively charged 2Dγ-AlOOH/DE and DE particles^a.

Wt% DE in the mix of 2Dγ-AlOOH/DE and DE particles in 3 mm precoat	Average number of layers formed by four neighboring 2Dγ-AlOOH/DE particles	Average layer thickness formed by four neighboring 2Dγ-AlOOH/DE particles,^b mm	MS2 removal efficacy, LRV	RT removal efficacy, LRV
0	38	3.0	6.1 ± 0.1	>7.7
10	29	2.3	5.1 ± 0.2	6.7 ± 0.5
25	13	1.0	3.6 ± 0.4	3.9 ± 0.3
50	5	0.4	2.6 ± 0.9	3.0 ± 0.3
75	1	0.1	1.0 ± 0.2	2.2 ± 0.1
100	0	0.0	0.5 ± 0.1	0.7 ± 0.2

Notes: a) Based on data of Ref. [1]; b) Proportional to the average number of layers formed by four neighboring 2Dγ-AlOOH/DE particles (column 2).