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Maria da Graça Carvalho

Maria da Graça Carvalho

Maria da Graça Videira Sousa Carvalho

Assistant Professor

PhD in Chemical Engineering, University of Coimbra, 1999

Chemical Engineering Degree, University of Coimbra, 1982

E-mail address

Research group
Particles, Polymers and Biomaterials Technology (PPB)
Teaching activities

Transport Phenomena I: fluid dynamics; theoretical lessons and laboratories 

Transport Phenomena II: heat Transfer, fundamentals and applications, equipment design (heat exchangers, condensers and evaporators);  theoretical lessons and laboratories 

Transport Phenomena III: mass transfer, fundamentals and applications (design of packed absorption columns); humidification, drying. Theoretical lessons and laboratories 

Instrumentation and Analytical Techniques: UV/vis spectroscopy, elemental analysis, chromatography

Pulp Science and Technology. Theoretical lessons and laboratories 

Research interests

Chemical characterization of lignocellulosic materials 

Kraft pulping and Pulp bleaching: chemistry, kinetic modelling of wood components reactions, and technology

Use of enzymes (xylanases) in pulp bleaching: effect on brightness stability and on chlorine dioxide and hydrogen peroxide consumptions

Integrated Biorefinery in a pulp mill: valorization of hemicelluloses (extraction prior to wood pulping) and valorization of pulp mill sludge rich in cellulosic compounds (SSF process)

Valorization of forest residues and agro-industrial products: separation processes of components; carbohydrates-to-etanol; fibers-to-nanocellulose.

Funded research projects

“Multi-purpose strategies for broadband agro-forest and fisheries by-products valorization: a step forward for a truly integrated biorefinery”, POCI-01-0145-FEDER-016403 – MultiBiorefinary 2017-2019

EMSURE - Energy and Mobility for Sustainable Regions (CENTRO-07-0224-FEDER-002004) funded by MAIS CENTRO, 2013-2015

“Fibre Production and Improvement” and “Pulp delignification with Oxygen" funded by BIM Kemi Sweden company, 2009 - 2014

"PAPERBRIGHT - High Performance Bleached Pulps: From Basic Knowledge to Advanced Technology", funded by the Portuguese Foundation for Science and Technology (FCT), 2011-2013.

"BIIPP 11552 – Integrated Biorefinery in the Pulp and Paper Industry" funded by QREN in consortium (Soporcel, Raiz, UAveiro, FEUP, FCTUC) 2010-2012

Key publications

C.V.T. Mendes, C.H.G. Cruz, D.F.N. Reis, M. G.V.S. Carvalho, J.M.S. Rocha. Integrated bioconversion of pulp and paper primary sludge to second generation bioethanol using Saccharomyces cerevisiae ATCC 26602. Bioresources Technology, 220: 161-167 (2016). DOI: 10.1016/j.biortech.2016.07.140

I.M. Rodrigues, M.G.V.S. Carvalho, J.M.S. Rocha. Increase of protein extraction yield from rapeseed meal through a pretreatment with phytase. Journal of the Science of Food and Agriculture. J Sci Food Agric, 97(8), pp. 2641-2646 (2017) DOI: 10.1002/jsfa.8087

J.I.T. Sousa, A.I.G. Moura, D.V. Evtuguin, M.G.V.S. Carvalho. Enzymatic treatment applied as a final stage in E. globulus kraft pulp bleaching. J Chem Technol Biotechnol. 91 (2): 547-554 (2016) DOI 10.1002/jctb.4624.

Rodrigues, I.M., Coelho, J.F.J., Carvalho, M.G.V.S. "Isolation and valorisation of vegetable proteins from oilseed plants: methods, limitations and potential" Journal of Food Engineering, 109 (2012), pp. 337-346. Published online: 17-DEC-2011. DOI: 10.1016/j.jfoodeng.2011.10.027

P.E.G. Loureiro, D.V. Evtuguin, M.G.V.S. Carvalho (2011) The final bleaching of eucalypt kraft pulps with hydrogen peroxide: relationship with industrial ECF bleaching history and cellulose degradation. J Chem Technol Biotechnol, 86(3): 381–390 (DOI 10.1002/jctb.2527)

Pedro E.G. Loureiro, António J.S. Fernandes, Fernanda P. Furtado, M. Graça V.S. Carvalho, Dmitry V. Evtuguin (2011), UV-Resonance Raman micro-spectroscopy to assess residual chromophores in cellulosic pulps. J. Raman Spectrosc. 42(5), 1039–1045 (DOI 10.1002/jrs.2816)

Loureiro PEG, Fernandes AJS, Carvalho MGVS, Evtuguin DV. (2010) The assessment of chromophores in bleached cellulosic pulps employing UV-Raman spectroscopy.Carbohydrate Research, 345:1442-1451.

Mendes, C.V.T., Carvalho, M.G.V.S., Baptista, C.M.S.G., Rocha, J.M.S., Soares, B. I. G., Sousa, G.D.A; (2009) “Valorisation of hardwood hemicelluloses in the kraft pulping process by using an integrated biorefinery concept”, Food and Bioproducts Processing, (special issue“Biorefinery Integration”) 87(3): 197-207.

J. P. F. Simão, A. P. V. Egas, C. M. S. G. Baptista, M. G. Carvalho and J. A. A. M. Castro (2005) “Evolution of Methylglucuronic and Hexenuronic Acid Contents of Eucalyptus globulus pulp during Kraft delignification” Ind Eng Chem Res, 44(9):2990-2996. DOI: 10.1021/ie049062e

A.I. Pedroso, M.G. Carvalho (2003) - Alkaline pulping of Portuguese Eucalyptus globulus: Effect on Hexenuronic Acid Content, Journal of Pulp and Paper Science, 29(5) 150-154

Theses supervision

Cátia V.T. Mendes (ongoing) "Integrated valorization of lignocellulosic by-products of agricultural, forestry and industrial origin for the production of cellulosic ethanol", (2018 - ) (co-supervision)

Ivo M.M.A. Rodrigues (ongoing) "Valorization of defatted oilseeds”  PhD thesis in progress. University of Coimbra (2010 - )

Pedro E.G. Loureiro (2011). Studies on the final bleaching of E. globulus kraft pulps with hydrogen peroxide, PhD thesis. University of Coimbra. (co-supervision)

João P.F. Simão (2008) “Kinetics of the kraft cooking phases”, PhD thesis. University of Coimbra. (co-supervision) 

Sofia M.F. Mota (2005) “Application of peroxide in the bleaching of Eucalyptus kraft pulps”, MSc in Engineering of the Pulp Production Processes for Paper, 2nd ed. 2003/2005 (co-supervision)

Other information

ORCID ID: 0000-0002-6636-3133

Certificate of Recognition by ACS Publications for reviewing activity in 2015 (Sarah Tegen, Vice President, Global Editorial & Author Services at American Chemical Society)

FPB - 2011 Impat Factors Award by Prof. N. Tichener-Hooker, Dr. K. Morison (editors-in-Chief) – 16.07.2012: Certificate of Excellence for Most Cited Authors of Food and Bioproducts Processing. Article: “Valorisation of hardwood hemicelluloses in the kraft pulping process by using an integrated biorefinery concept” which contributed significantly to the increased 2011 Impact Factor

Honorable Mention in the competition "Ing Orlando Losada" 2008-2009 (Experiences and Innovative technological improvements in the paper industry) - 2009 - Association of Manufacturers of Cellulose and Paper, Argentina

Training course in Pulp and Paper, Celbi mill operators, Jan - Feb 2011 (58 persons, 4 classes, 3 days per class)

For a full list of projects and publications please see