An Overview of Biocement Production from Microalgae

Dessy , Ariyanti, and Noer Abyor , Handayani, and Hadi, Hadiyanto (2011) An Overview of Biocement Production from Microalgae. International Journal of Science and Engineering, 2 (2). pp. 31-33. ISSN 20865023

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Abstract

The invention of microorganism’s involvement in carbonate precipitation, has lead the exploration of this process in the field of construction engineering. Biocement is a product innovation from developing bioprocess technology called biocementation. Biocement refers to CaCO3 deposit that formed due to microorganism activity in the system rich of calcium ion. The primary role of microorganism in carbonate precipitation is mainly due to their ability to create an alkaline environment (high pH and DIC increase) through their various physiological activities. Three main groups of microorganism that can induce the carbonate precipitation: (i) photosynthetic microorganism such as cyanobacteria and microalgae; (ii) sulphate reducing bacteria; and (iii) some species of microorganism involved in nitrogen cycle. Microalgae are photosynthetic microorganism and utilize urea using urease or urea amidolyase enzyme, based on that it is possible to use microalgae as media to produce biocement through biocementation. This paper overviews biocement in general, biocementation, type of microorganism and their pathways in inducing carbonate precipitation and the prospect of microalgae to be used in biocement production.

Item Type:Article
Subjects:T Technology > TP Chemical technology
Divisions:Faculty of Engineering > Department of Chemical Engineering
Faculty of Engineering > Department of Chemical Engineering

UNDIP Journal > International Journal of Science and Engineering
ID Code:36248
Deposited By:teknik kimia
Deposited On:03 Oct 2012 15:49
Last Modified:10 Oct 2012 14:17

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