Table 3. Comparison of the O₂, N₂, and CO₂ Adsorption Capacities of GAC-10-500 (Functionalized GAC) versus Other AC and CMS Works.

adsorbent	manufacturer	T (K)	P (kPa)	qm (mmol/g)	Qst (kJ/mol)	isotherm model	kinetic model	ref
O2
CMS 3A	Takeda	273–323	1300	1.37–2.32	18	Langmuir	isothermal diffusion	(78)
				1.74–2.66	–	VSMa
CMS 5A	Takeda	273–323	1300	1.64–2.78	15.5	Langmuir
				2.23–2.85	–	VSM
CMS	Bergbau-Forschung	303	1300	1.62	–	Langmuir
				1.74	–	VSM
CMS 3A	Takeda	293	75.73	0.266	17.5	Langmuir	dual-resistance	(66)
		303	76.66	0.233	17.5	Sips
		313	67.19	0.174	17.5	Toth
CMS	Takeda	293–313	1500	3.48–3.63	15.5	Langmuir	volumetric	(79)
				4.55–4.83	–	Langmuir–Freundlich
AC	Norit	303	3150	5.82	–	Langmuir	dual-resistance	(80)
AC	Kuraray	293–323	1000	5.70	16.1	DSLb	isothermal dual resistance	(40)
				5.17
CMS		293–323		3.27	18.2	Sips
				2.89
GAC-10-500	Jacobi	298–328	1000	3.1–5.77	25	Sips	fractional-order	this work
N2
CMS	Changxing Shanli Chemical Materials	303–343	700	7.25	17.5	MSLc	dual-resistance	(81)
				2.61	17.6	Toth
CMS 3k	Takeda	308	2000	10.6	15.93	MSL	dual-resistance	(82)
CMS 3A	Takeda	273–323	1300	1.68–1.97	13.5	Langmuir	dual-resistance	(78)
				1.81–2.12
CMS 5A	Takeda	303	1300	1.58–2.14	–	VSM
				1.9–2.46
CMS	Bergbau-Forschung	293–313	1300	1.48	–	Langmuir
				1.59		VSM
CMS 3A	Takeda	293	70.53	0.263	23	Langmuir	dual-resistance	(66)
		303	66.93	0.204	22	Sips
		313	75.33	0.195	22	Toth
CSM	Takeda	293–323	1500	2.55–3.11	25.1	Langmuir	–	(79)
				3.4–4.63	–	Langmuir–Freundlich
AC	Kuraray	398–318	1000	3.18–3.45	18.2	Langmuir	dual-resistance	(83)
				3.71–4.29	–	Sips
				4.61–5.6	–	Toth
AC	Kuraray	293–323	1000	3.93	16.5	DSL	isothermal dual resistance	(40)
				2.89	–
CMS				2.44	16.5	Sips
				2.21	–
CMS	Kuraray	293–323	1000	1.72–1.99	–	Langmuir	isothermal diffusion	(73)
				1.71–2.2	16	Sips
CMS A	Air Products and Chemicals Inc., US	303	101.3	0.325	–	Langmuir	non-isothermal
CMS 3A	Takeda	303	623	0.217	–	Langmuir
CMS 3A	Takeda	303	825	1.194	–	Langmuir
CMS 3A	Takeda	293	601	0.284	–	Sips	non- isothermal
CMS 3K	Takeda	298	101.3	1.37	–
CMS-131510	Shanli Chemical	303	701.7	1.115	–
GAC-10-500	Jacobi	298–328	1000	2.5–3.6	12.9	Sips	fractional-order	this work
CO2
CMS A	Air Products and Chemicals Inc., US	303	101.3	1.63	28	Sips	–	(73)
CMS 3A	Takeda	303	895	3.12	–	Langmuir	linear driving force	(84)
CMS 3A	Takeda	293	382	1.47	33	Langmuir–Sips	non-isothermal	(85)
CMS 3A	Takeda	343	996	1.08	–	Langmuir	–	(86)
CMS 3A	Takeda	293	191	2.45	–	D–R	–	(87)
AC	Sud Chemie	293	2068	8.5	11	Langmuir	–	(88)
CMS 13X	Sud Chemie	293	2068	5.2	10	Langmuir	–
CMS 4A	Sud Chemie	293	2068	4.8	–	Langmuir	–
AC	Mahab zist	293–358	1000	5.1–5.9	–	Freundlich	Elovich and second-order	(21)
GAC-10-500	Jacobi	298–328	1000	4–6.3	14	Sips	fractional-order	this work

^aVacancy solution model.

^bDual-site Langmuir model.

^cMultisite Langmuir model.