Interfaces selectivas para recuperar Ag(I) de lixiviados de e-waste: evaluación de eficiencia basada en DEA

Ivan Avila Raya; Rodrigo Gómez Monge; Rodrigo Tavera Ochoa; Alfonso Lemus Solorio; José Luis Rivera Rojas; Salomón Ramiro Vásquez García

doi:10.37636/recit.v9n1e435

Authors

Ivan Avila Raya División de Estudios de Posgrado, Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Edificio IQ, Avenida Francisco J. Múgica S/N, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México.

Competing Interests

No
Rodrigo Gómez Monge Facultad de Economía “Vasco de Quiroga”, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Av. Francisco J. Múgica S/N, Col. Felicitas del Río, C.P. 58030, (Ciudad Universitaria; Edificio T, Planta Alta), Morelia, Michoacán, México. https://orcid.org/0000-0001-8393-2855

Competing Interests

No
Rodrigo Tavera Ochoa Facultad de Economía “Vasco de Quiroga”, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Av. Francisco J. Múgica S/N, Col. Felicitas del Río, C.P. 58030, (Ciudad Universitaria; Edificio T, Planta Alta), Morelia, Michoacán, México. https://orcid.org/0009-0001-3256-4375

Competing Interests

No
Alfonso Lemus Solorio División de Estudios de Posgrado, Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Edificio IQ, Avenida Francisco J. Múgica S/N, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México. https://orcid.org/0000-0003-2736-5600

Competing Interests

No
José Luis Rivera Rojas Facultad de Ciencias Físico-Matemáticas “Mat. Luis Manuel Rivera Gutiérrez”, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Av. Francisco J. Múgica S/N, Ciudad Universitaria, Edificio ALFA, C.P. 58030, Morelia, Michoacán, México. https://orcid.org/0000-0002-6985-7841

Competing Interests

No
Salomón Ramiro Vásquez García División de Estudios de Posgrado, Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH). Edificio IQ, Avenida Francisco J. Múgica S/N, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México. https://orcid.org/0000-0001-8288-7183

Competing Interests

No

DOI:

https://doi.org/10.37636/recit.v9n1e435

Keywords:

e-waste, silver, selective separation interface, diffusion cell, UV-Vis, DEA, efficiency

Abstract

The efficiency of selective separation interfaces (SSIs) for recovering Ag(I) from e-waste leachates was examined through Data Envelopment Analysis (DEA) as a multicriteria assessment framework. The SSIs were produced by a dissolution–casting–evaporation route using cellulose triacetate as the polymeric support, dissolved in dichloromethane, and tris(2-ethylhexyl) phosphate (TEHP) as the carrier-phase component. Transport tests were conducted in a two-compartment diffusion cell under controlled conditions (V_d = 80 mL, V_a = 80 mL, A = 4.9 cm², 500 rpm, and 180 min). Ag(I) was quantified by UV–Vis spectrophotometry at 404 nm using an external calibration curve (Abs = 0.0052·C_{Ag(I)} + 0.0149; r = 0.9998; C in ppm), with matrix blanks used for background correction. An output-oriented BCC DEA model was applied to 18 experimental configurations (DMUs), considering SSI thickness (δ), carrier concentration (C_{car}) and energy consumption (E) as inputs, and extraction (%), flux (J) and selectivity (S) as outputs. The assessment identified 9 DMUs on the efficient frontier (score = 1.000), whereas the inefficient cases required output expansions of up to Φ = 1.328 (≈32.8%) to match the best observed performance. Overall, the results provide a quantitative basis for ranking SSI designs according to silver recovery performance and resource use.

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