Rheological Characterization of Algal Suspensions for Bioethanol Processing

Cioroiu, Doinita Roxana; Parvulescu, Oana Cristina; Koncsag, Claudia Irina; Dobre, Tanase; Raducanu, Cristian

Doinita Roxana Cioroiu, Oana Cristina Parvulescu, Claudia Irina Koncsag, Tanase Dobre, Cristian Raducanu

Rheological Characterization of Algal Suspensions for Bioethanol Processing

Abstract:

The paper has aimed at studying the rheology of macroalgae aqueous suspensions in the presence of cellulase enzyme relevant to bioethanol processing by a subsequent fermentation. Rheological measurements of aqueous suspensions of Ceramium virgatum and Cladophora vagabunda macroalgae species were performed using a Couette geometry rotational viscosimeter. The effects of operation temperature (t=25, 50 °C), cellulase/dried algae ratio (R=0, 16 U/mgda), and algal suspension mass concentration (c=5-15%) on rheological behaviour and parameters were evaluated. Algal suspensions behaved as non-Newtonian fluids obeying either a Bingham plastic linear relationship or an Ostwald-de Waele power law corresponding to a pseudoplastic fluid. Characteristic dynamic viscosity of Bingham plastic fluids were in the range 0.045-0.115 Pa×s for C. virgatum suspensions and 0.021-0.114 Pa×s for C. vagabunda ones, whereas apparent viscosity varied from 0.138 Pa×s to 43.551 Pa×s for C. virgatum and from 0.181 Pa×s to 45.417 Pa×s for C. vagabunda. Data obtained in 8 rheological tests corresponding to a Bingham plastic behaviour of C. vagabunda suspensions, which were processed according to a 23 factorial experiment, emphasized an increase in suspension viscosity with all process factors. The results could be useful for optimization of enzymatic hydrolysis process in order to develop efficient and cost effective saccharification and fermentation strategies.

Keywords:
macroalga; seaweed; algal suspension; rheology; non-Newtonian fluid; Bingham plastic; power law fluid

Issue: 2017, Volume 68, Issue 10

Pages: 2311-2316

Publication date: 2017/11/15

https://doi.org/10.37358/RC.17.10.5875

Download Pdf Article

This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
CIOROIU, D.R., PARVULESCU, O.C., KONCSAG, C.I., DOBRE, T., RADUCANU, C., Rheological Characterization of Algal Suspensions for Bioethanol Processing, Rev. Chim., 68(10), 2017, 2311-2316.

Vancouver
Cioroiu DR, Parvulescu OC, Koncsag CI, Dobre T, Raducanu C. Rheological Characterization of Algal Suspensions for Bioethanol Processing. Rev. Chim.[internet]. 2017 Oct;68(10):2311-2316. Available from: https://doi.org/10.37358/RC.17.10.5875

APA 6th edition
Cioroiu, D.R., Parvulescu, O.C., Koncsag, C.I., Dobre, T. & Raducanu, C. (2017). Rheological Characterization of Algal Suspensions for Bioethanol Processing. Revista de Chimie, 68(10), 2311-2316. https://doi.org/10.37358/RC.17.10.5875

Harvard
Cioroiu, D.R., Parvulescu, O.C., Koncsag, C.I., Dobre, T., Raducanu, C. (2017). 'Rheological Characterization of Algal Suspensions for Bioethanol Processing', Revista de Chimie, 68(10), pp. 2311-2316. https://doi.org/10.37358/RC.17.10.5875

IEEE
D.R. Cioroiu, O.C. Parvulescu, C.I. Koncsag, T. Dobre, C. Raducanu, "Rheological Characterization of Algal Suspensions for Bioethanol Processing". Revista de Chimie, vol. 68, no. 10, pp. 2311-2316, 2017. [online]. https://doi.org/10.37358/RC.17.10.5875

Text
Doinita Roxana Cioroiu, Oana Cristina Parvulescu, Claudia Irina Koncsag, Tanase Dobre, Cristian Raducanu,
Rheological Characterization of Algal Suspensions for Bioethanol Processing,
Revista de Chimie,
Volume 68, Issue 10,
2017,
Pages 2311-2316,
ISSN 2668-8212,
https://doi.org/10.37358/RC.17.10.5875.
(https://revistadechimie.ro/Articles.asp?ID=5875)
Keywords: macroalga; seaweed; algal suspension; rheology; non-Newtonian fluid; Bingham plastic; power law fluid

RIS
TY - JOUR
T1 - Rheological Characterization of Algal Suspensions for Bioethanol Processing
A1 - Cioroiu, Doinita Roxana
A2 - Parvulescu, Oana Cristina
A3 - Koncsag, Claudia Irina
A4 - Dobre, Tanase
A5 - Raducanu, Cristian
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2017
VL - 68
IS - 10
SP - 2311
EP - 2316
UR - https://doi.org/10.37358/RC.17.10.5875
KW - macroalga
KW - seaweed
KW - algal suspension
KW - rheology
KW - non-Newtonian fluid
KW - Bingham plastic
KW - power law fluid
ER -

BibTex
@article{RevCh2017P2311,
author = {Cioroiu Doinita Roxana and Parvulescu Oana Cristina and Koncsag Claudia Irina and Dobre Tanase and Raducanu Cristian},
title = {Rheological Characterization of Algal Suspensions for Bioethanol Processing},
journal = {Revista de Chimie},
volume = {68},
number = {10},
pages = {2311-2316},
year = {2017},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.17.10.5875},
url = {https://revistadechimie.ro/Articles.asp?ID=5875}
}

<<<< back

PUBLISHING SECTION

Author Guidelines

* Paper Drafting

* Paper Template

* Ethical Statement

* Paper Submission

Ghidul Autorului (ro)

Open Access & Archiving Policy

Search Authors

LATEST NEWS
	NUMAR OMAGIAL PETRU PONI.. detalii
	Revista de Chimie - 70 de ani de aparitie neintrerupta.. detalii
	English-Romanian Dictionary for Mechanical Engineering (download pdf)