Helena Passos obtained her MSc degree in Chemical Engineering in 2012. After being awarded with a PhD grant from the Portuguese Foundation for Science and Technology, she completed her PhD in Chemical Engineering at the University of Aveiro in June of 2017. During the PhD, Helena Passos had additional trainees activities at Technical University of Dortmund, Germany and Tokyo University of Agriculture and Technology, Japan. After, she worked as a post-doctoral researcher in an international ERA-MIN project concerning the recovery of cobalt and REE from NiMH batteries recycling and in a European Research Council project, the “IgYPurTech”, focused on the use of aqueous biphasic systems for the purification of egg yolk antibodies as alternative biopharmaceuticals. Currently, Helena Passos is a Researcher (CEEC IND 2017) at CICECO, working in the development of novel and sustainable processes for the recovery and recycling of critical metals from waste streams.
Helena Passos has published 35 articles in international peer reviewed multidisciplinary high impact journals (+1100 citations, h-index 16 (Scopus)). Moreover, she has contributed with +100 oral and posters communications and 1 plenary lecture in national and international conferences and meetings.
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PATh Research Group It deals with the study of novel solvents and the development of sustainable products and processes
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2013 - 2017 | European PhD in Chemical Engineering, with specialization in Bioengineering | University of Aveiro, Portugal | Thesis title "Development and characterization of new extraction platforms using ionic-liquid-based aqueous biphasic systems", supervised by Prof. Dr. João A.P. Coutinho (UA) and co-supervised by Dr. Mara G. Freire (UA).
2007 - 2012 | MSc in Chemical Engineering | University of Aveiro, Portugal | Thesis title "Extraction of bioactive compounds with ionic liquid aqueous solutions", supervised by Prof. Dr. João A.P. Coutinho (UA) and co-supervised by Dr. Mara G. Freire (UA).
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07/2017–04/2019 | Post-doctoral researcher | CICECO, University of Aveiro, Portugal.
09/2016-12/2016 | Researcher as PhD student | Department of Biotechnology, Tokyo University of Agriculture and Technology, Japan.
03/2013-05/2013 | Researcher as PhD student | Laboratory of Thermodynamics, Technical University of Dortmund, Germany.
08/2011 | Trainee student in quality control (professional traineeship) | Bresfor - Indústria do Formol, S.A., Portugal.
10/2009-09/2010 | Scholarship Researcher (BII 09) | Chemistry Department, CICECO - Aveiro Institute of Materials, University of Aveiro, Portugal.
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-> Phys. Chem. Chem. Phys. 2018, 20, 8411-8422. Included in the themed collections “2018 PCCP HOT Articles” and “PCCP Perspectives”

-> Green Chem. 2018, 20, 1218-1223. Research Highlight in Nature Catalysis, 2018, 1, 235 (DOI:10.1038/s41929-018-0066-9)

-> Angew. Chem. Int. Ed. 2017, 56, 15058-15062.

-> Green Chem. 2017, 19, 4012-4016. Included in the themed collections: “International Symposium on Green Chemistry 2017” and “2017 Green Chemistry Hot Articles”

-> ACS Sustain. Chem. Eng. 2016, 4, 2881-2886.

-> Green Chem. 2014, 16, 4786-4815. Highly Cited Paper

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MSc students
- Brayan Cruz, “O efeito hidrotrópico de compostos zwiteriónicos no desenvolvimento de novas formulações farmacêuticas” | MSc Thesis in Biochemistry | Supervisors: Dr. Helena Passos and Dr. Ana M. Ferreira, University of Aveiro | 2020/2021 (in progress).
- Sandra Silva, “De resíduos alimentares a compostos de valor acrescentado utilizando soluções aquosas de solventes alternativos” | MSc Thesis in Biochemistry | Supervisors: Dr. Ana M. Ferreira and Dr. Helena Passos, University of Aveiro | 2020/2021 (in progress).
BSc students
Nuno F. A. Pedrosa, “Application of algae and cyonobacteria in metal concentration and extraction from wastewaters” | Graduation in Biotechnology | Supervisors: Dr. Helena Passos and Prof. Dr. João A.P. Coutinho, University of Aveiro | 2020/2021 (in progress).
António J. da R. Coelho, “Towards a circular economy: use of incinerated bottom ash as a secondary source for phosphorus and critical metals recovery” | Graduation in Biotechnology | Supervisors: Dr. Helena Passos and Dr. Nicolas Schaeffer, University of Aveiro | 2020/2021 (in progress).
Ana S. R. Pinto, “Hydrotropic effect of zwitterionic compounds as a strategy to facilitate the administration of drugs” | Graduation in Biochemistry | Supervisors: Dr. Helena Passos and Dr. Ana M. Ferreira, University of Aveiro | 2019/2020.
Tatiana D. Ferreira, “Avaliação do efeito hidrotrópico de compostos zwiteriónicos para aplicação na indústria farmacêutica” | Graduation in Biotechnology | Supervisors: Dr. Helena Passos and Dr. Ana M. Ferreira, University of Aveiro | 2019/2020.
Brayan I. Cruz, “Metals extraction from acid mine drainage water – the São Domingos mine” | Graduation in Biochemistry | Supervisors: Prof. Dr. João A.P. Coutinho and Dr. Helena Passos, University of Aveiro | 2017/2018.
Sara H. S. Costa, “Extraction and selective separation of dyes with aqueous multiphasic systems” | Graduation in Biotechnology | Supervisors: Prof. Dr. João A.P. Coutinho and Dr. Helena Passos, University of Aveiro | 2013/2014.
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2016-02-11
Thermoreversible aqueous biphasic systems highlighted in the radio program of February 11th, 2016.
2016-02-16
Trabalho do Departamento de Química e do CICECO publicado no jornal Scientific Reports.
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The influence of zwitterions on the partition of biomolecules in aqueous biphasic systemsBasaiahgari, A; Passos, H; Coutinho, JAP; Gardas, RL 2020, SEPARATION AND PURIFICATION TECHNOLOGY, 253,
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Selective Separation of Manganese, Cobalt, and Nickel in a Fully Aqueous SystemSchaeffer, N; Passos, H; Gras, M; Vargas, SJR; Neves, MC; Svecova, L; Papaiconomou, N; Coutinho, JAP 2020, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 8, 32, 12260-12269.
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Acetonitrile as adjuvant to tune polyethylene glycol + K3PO4 aqueous two-phase systems and its effect on phenolic compounds partitiondo Rosario, RLSD; Souza, RL; Farias, FO; Mafra, MR; Soares, CMF; Passos, H; Coutinho, JAP; Lima, AS 2019, SEPARATION AND PURIFICATION TECHNOLOGY, 223, 41-48.
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Synergistic Aqueous Biphasic Systems: A New Paradigm for the One-Pot Hydrometallurgical Recovery of Critical MetalsSchaeffer, N; Gras, M; Passos, H; Mogilireddy, V; Mendonca, CMN; Pereira, E; Chainet, E; Billard, I; Coutinho, JAP; Papaiconomou, N 2019, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 7, 1, 1769-1777.
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Sustainable Extraction and Separation of Rhenium and Molybdenum from Model Copper Mining Effluents Using a Polymeric Aqueous Two-Phase SystemMuruchi, L; Schaeffer, N; Passos, H; Mendonca, CMN; Coutinho, JAP; Jimenez, YP 2019, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 7, 1, 1778-1785.
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Mechanisms of phase separation in temperature-responsive acidic aqueous biphasic systemsSchaeffer, N; Perez-Sanchez, G; Passos, H; Gomes, JRB; Papaiconomou, N; Coutinho, JAP 2019, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21, 14, 7462-7473.
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Simultaneous extraction and concentration of water pollution tracers using ionic-liquid-based systemsDinis, TBV; Passos, H; Lima, DLD; Sousa, ACA; Coutinho, JAP; Esteves, VI; Freire, MG 2018, JOURNAL OF CHROMATOGRAPHY A, 1559, 69-77.
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Mechanisms ruling the partition of solutes in ionic-liquid-based aqueous biphasic systems - the multiple effects of ionic liquidsPassos, H; Dinis, TBV; Capela, EV; Quental, MV; Gomes, J; Resende, J; Madeira, PP; Freire, MG; Coutinho, JAP 2018, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 20, 13, 8411-8422.
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Designer solvent ability of alcohols in aqueous biphasic systems composed of deep eutectic solvents and potassium phosphateFarias, FO; Passos, H; Sanglard, MG; Igarashi-Mafra, L; Coutinho, JAP; Mafra, MR 2018, SEPARATION AND PURIFICATION TECHNOLOGY, 200, 84-93.
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Hydrogen bond basicity of ionic liquids and molar entropy of hydration of salts as major descriptors in the formation of aqueous biphasic systemsPassos, H; Dinis, TBV; Claudio, AFM; Freire, MG; Coutinho, JAP 2018, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 20, 20, 14234-14241.
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Mechanism of ionic-liquid-based acidic aqueous biphasic system formationSchaeffer, N; Passos, H; Gras, M; Mogilireddy, V; Leal, JP; Perez-Sanchez, G; Gomes, JRB; Billard, I; Papaiconomou, N; Coutinho, JAP 2018, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 20, 15, 9838-9846.
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An integrated process for enzymatic catalysis allowing product recovery and enzyme reuse by applying thermoreversible aqueous biphasic systemsFerreira, AM; Passos, H; Okafuji, A; Tavares, APM; Ohno, H; Freire, MG; Coutinho, JAP 2018, GREEN CHEMISTRY, 20, 6, 1218-1223.
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Understanding the fundamentals of acid-induced ionic liquid-based aqueous biphasic systemMogilireddy, V; Gras, M; Schaeffer, N; Passos, H; Svecova, L; Papaiconomou, N; Coutinho, JAP; Billard, I 2018, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 20, 24, 16477-16484.
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Recovery of metals from waste electrical and electronic equipment (WEEE) using unconventional solvents based on ionic liquidsSchaeffer, N; Passos, H; Billard, I; Papaiconomou, N; Coutinhoa, JAP 2018, CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 48, 13-15, 859-922.
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pH Effect on the Formation of Deep-Eutectic-Solvent-Based Aqueous Two-Phase SystemsFarias, FO; Passos, H; Coutinho, JAP; Mafra, MR 2018, INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 57, 49, 16917-16924.
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