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

Table 1

Initial removal efficacy of biological particles as a function of pH and electrolyte ionic strength.

Material	Zeta potential, mV	pH	Electrolyte ionic strength, mM	Debye length, λD,^a nm	RT Removal efficacy, LRV^e	MS2 Removal efficacy, LRV^e
1Dγ-AlOOH/microglass^b	47 ± 9	7.0	0.002(1)	215	>7.0	5.1
2Dγ-AlOOH/DE^c	56 ± 9				>7.0	6.3
2Dβ-FeOOH/2Dγ-AlOOH/DE^d	20 ± 3				>7.0	>6.0
1Dγ-AlOOH/microglass^b	47 ± 9		3400	0.16	7.7^f	3.8^f
2Dγ-AlOOH/DE^c	56 ± 9				>7.1	5.3
1Dγ-AlOOH/microglass^b	23 ± 6	10.5	0.33(3)^e	17	>6.9^f	7.4^f
2Dγ-AlOOH/DE^c	15 ± 3				>4.5	3.1
1Dγ-AlOOH/microglass^b	23 ± 6		3400	0.16	7.7^f	3.8^f
2Dγ-AlOOH/DE^c	15 ± 3				5.5	4.0

Notes: a) For NaCl electrolyte with bulk concentration at T = 25°C the Debye length equals to (in nm) where is the concentration of the salt, in mol/dm³; b) Non-woven 1Dγ-AlOOH/microglass media; c) 3-mm 2Dγ-AlOOH/DE precoat [37]; d) 3-mm 2Dβ-FeOOH/2Dγ-AlOOH/DE precoat [37]; e) Logarithm reduction value; f) Removal efficacy by 2 layers of 1Dγ-AlOOH/microglass non-woven media.