Heritage Science

Table 7 Removal efficiency of adsorbent materials under passive conditions after 72 h

From: Adsorbent media for the sustainable removal of organic air pollutants from museum display cases

Adsorbent category	Supplier/adsorbent media	Removal efficiency [%]
Adsorbent category	Supplier/adsorbent media	HCHO	HCOOH	CH₃COOH	Toluene	alpha-pinene
Pure carbons	A/PC1	++	++	++	++	++
	B/PC2	++	++	++	++	++
	C/PC3	++	++	++	++	++
Impregnated carbons	B/IC3	++	++	++	○	++
	B/IC5	++	+	++	○	++
	B/IC6	++	++	++	○	++
	B/IC7	++	++	++	++	++
	C/IC8	++	++	++	++	++
Charcoal cloth & foams	C/CC1	+^d)	++	++^b)	++	++
	C/CC6	++	++	++	++	++
	C/CC7	++	++	++	++	++
	A/CC10	+^c)	++	++^c)	++	++
Zeolites	D/Z2	○	++	++	+^d)	++
Zeolites	D/Z6	+^c)	++	++^c)	−^b)	−^b)
Others	A/SG2	○/−^a)	++	++^b)	○	○

HCHO: formaldehyde; HCOOH: formic acid; CH₃COOH: acetic acid
++ very good (< 20%); + good (20–40%); ○ moderate (40–70%); − bad (> 70%)
^a) Breakthrough after 6 h; ^b) Breakthrough after 28 h; ^c) Breakthrough after 48 h; ^d) Breakthrough after 72 h

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