Pre-concentration strategies for microalgae harvesting as biorefinery process chain

Sirin, Sema

Belongs to TDX:SerieTesis collection

TITLE:

Pre-concentration strategies for microalgae harvesting as biorefinery process chain - TDX:1216

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https://hdl.handle.net/20.500.11797/TDX1216

Date:	2013-06-14
Departament/Institute:	Departament d'Enginyeria Química Universitat Rovira i Virgili.
Director:	Salvadó i Rovira, Joan
Author:	Sirin, Sema
Title:	Pre-concentration strategies for microalgae harvesting as biorefinery process chain

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Description:	Over the past few decades, microalgae become focus of the researches again as a possible raw material for the production of biodiesel due to the myth of the oil crisis and also Kyoto Protocol which entered into force in 2005. Although microalgae have proven to be very efficient at producing oil-rich lipids, the optimum conditions for algae cultivation and methods for harvesting and oil extraction have not been determined in details yet. In particular, the harvesting process is especially important to the effectiveness of the overall process because of the large volumes of algae-rich water that must be processed. The requirements for downstream also makes complicated the chosen harvesting system. Several solid-liquid separation technologies have shown some potential for achieving microalgae/water separation; however, application of these processes to biofuel production requires an evaluation of treatment effectiveness as a function of water quality, algae particle characteristics and process chemistry. Pre-concentration (bulk harvesting) aims to separate the micro algae from culture medium (bulk solution). Flocculation, flotation or gravity sedimentation are the frequently used methods. Filtration, centrifugation and ultrasonic aggregation are mostly used in thickening. Of these technologies, from chemical and/or biological harvesting, by means of flocculants e.g. auto flocculation, chemical coagulation, inorganic coagulants, organic flocculants, combined flocculation, electro-coagulation and ultrasonic aggregation. Flocculation is used in order to ease the following dewatering steps in this study. Flocculation is also a factor that affects the mechanical properties of the culture. Therefore, it is important to study the flow behaviour of flocculated suspensions by a
Type:	info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/doctoralThesis
Contributor:	Departament d'Enginyeria Química Universitat Rovira i Virgili.
Títol:	Pre-concentration strategies for microalgae harvesting as biorefinery process chain
Language:	eng
Subject:	66 - Enginyeria, tecnologia i indústria química. Metal·lúrgia 62 - Enginyeria. Tecnologia
Format:	application/pdf 196 p.
Creator:	Sirin, Sema
Rights:	info:eu-repo/semantics/openAccess ADVERTIMENT. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al repositori institucional de la Universitat Rovira i Virgili. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a aquest repositori (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs.
Date:	2013-06-14
Publisher:	Universitat Rovira i Virgili
Subject:	66 - Enginyeria, tecnologia i indústria química. Metal·lúrgia 62 - Enginyeria. Tecnologia
Language:	eng
Publisher:	Universitat Rovira i Virgili
Source:	TDX (Tesis Doctorals en Xarxa)
Identifier:	http://hdl.handle.net/10803/119607
Format:	application/pdf 196 p.
Keywords:	auto-flocculation pre-concentration harvesting microalgae

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