FEASIBILITY OF H2 PRODUCTION BY ACID CORROSION USING H2SIF6 AND WASTE FE SOURCES

Tatiane Carvalho Maeda

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Letícia Teixeira

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Lorrane Cristine Caixeta

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Raissa Antonelli

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Faculdade de Engenharia Química, Universidade Estadual de Campinas, 13083-852 Campinas - SP, Brasil

Camila Ferreira Pinto

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Sandra Cristina Dantas

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Priscila Pereira Silva

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Ana Claudia Granato

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

David Maikel Fernandes

Departamento de Ciências e Linguagens, Instituto Federal de Minas Gerais, Bambuí - MG, Brasil

Geoffroy Roger Pointer Malpass ^**e-mail: geoffroy.malpass@uftm.edu.br

Departamento de Engenharia Química, Universidade Federal do Triângulo Mineiro, 38.066-240 Uberaba - MG, Brasil

Factor	Coefficient	Cumulative Square Error
Mean	137.14	8.67
(X₁) Mass	36.78	12.27
(X₂) Volumetric acid fraction	114.11	24.54
(X₂²)	-32.89	21.25
(X₃) Time	89.00	12.27
(X₁X₂)	36.92	15.03
(X₁X₃)	25.42	15.03
(X₂X₃)	60.08	15.03

Factor	p	Coefficient	Cumulative Square Error
Mean	0.00	105.11	1.32
(X₁) Mass	0.00	52.00	1.62
(X₂) Volumetric acid fraction	0.00	38.06	1.62
(X₂²)	0.02	3.58	1.40
(X₃) Time	0.00	47.28	1.62
(X₁X₂)	0.00	17.08	1.98
(X₁X₂²)	0.00	9.87	1.72
(X₁²X₂)	0.00	5.71	1.72
(X₁X₃)	0.00	21.08	1.98
(X₂X₃)	0.00	18.25	1.98

Fator	p	Coefficient	Cumulative Square Error
Mean	0.00	79.11	2.47
(X₁) Mass	0.00	27.24	6.28
(X₁²)	0.00	-6.21	5.06
(X₂) Acid fraction	0.09	6.11	6.48
(X₂²)	0.00	10.08	5.79
(X₃) Time	0.00	60.96	6.28
(X₁X₂²)	0.05	4.50	7.19
(X₁X₃)	0.00	26.96	4.49
(X₁²X₃)	0.05	-4.02	3.59
(X₂²X₃)	0.00	13.59	7.19

Factor	p	Coefficient	Cumulative Square Error
Mean	0.00	287.55	31.69
(X₃) Time	0.00	234.47	49.24
(X₃²)	0.24	-40.51	62.60
(X₂) acid fraction	0.00	343.38	49.14
(X₂²)	0.00	162.54	62.17
(X₂X₃)	0.00	220.00	64.81

Factor	Minimum observed	Critical value	Maximum observed
Time	0.74	8.03	15.26
Fraction	0.23	0.28	0.96

Factor	p	Coefficient	Cumulative Square Error
Mean	0.00	224.08	10.00
(X₁) Mass	0.00	84.41	7.78
(X₁²)	0.57	-5.95	9.89
(X₂) acid fraction	0.00	35.82	7.78
(X₂²)	0.09	-19.61	9.89
(X₂X₃)	0.16	16.25	10.23

Factor	Minimum observed	Critical value	Maximum observed
Mass	0.89	11.12	2.10
Fraction	0.46	2.47	0.94

Factor	p	Coefficient	Cumulative Square Error
Mean	0.44	9.98	12.55
(X₁) Mass	0.01	23.69	15.37
(X₁²)	0.60	5.06	18.83
(X₂) acid fraction	0.01	24.00	15.37
(X₂²)	0.00	29.99	18.82
(X₃) Time	0.00	26.73	15.37
(X₃²)	0.44	7.49	18.82
(X₁X₃)	0.04	22.50	18.82

Factor	Minimum observed	Critical value	Maximum observed
Mass	5.50	40.99	104.49
Fraction	0.19	0.37	0.90
Time	11.72	25.19	68.28

Materials	Maximum H₂ production (mL)	Gas produced per mass (mL g^-1)	Gas produced per mass (mL g^-1 min^-1)	Cost (US$ L^-1 H₂)^# # Exchange rate 05/05/2021 (1US$= R$5.35).130 min;210 min;360 min.	Cost in R$ (R$ L^-1 H₂)
Iron powder	2770	110.8	3.69¹	0.02	0.11
Steel wool	330	165.0	16.50²	0.17	0.91
Rebar	160	1.8	0.03³	0.70	3.75