Please use this identifier to cite or link to this item: http://cmuir.cmu.ac.th/jspui/handle/6653943832/602
Title: Biocoagulation of dairy wastewater by Lactobacillus casei TISTR 1500 for protein recovery using micro-aerobic sequencing batch reactor (micro-aerobic SBR)
Authors: Seesuriyachan P.
Kuntiya A.
Sasaki K.
Techapun C.
Issue Date: 2009
Abstract: This study investigated biocoagulation of dairy process wastewater with a new system of the micro-aerobic sequencing batch reactor (micro-aerobic SBR) at a batch bench scale. Lactobacillus casei TISTR 1500 was inoculated to produce acid coagulants under non-sterile acid conditions. Colloidal proteins were removed by employing a solid-liquid separation step as a pre-treatment. The micro-aerobic SBR process had the efficiencies of organic reduction with 73.6 ± 5.9%, 90.1 ± 1.3%, and 85.7 ± 0.6% of chemical oxygen demand (COD), proteins, and sugars without adding external coagulant, and flocculant, respectively. Sustained acid fermentation was achieved for at least 150 cycles by applying an indigenous fill-react-settle-draw-idle sequence in the micro-aerobic SBR process and the use of different solid retention times at 3, 6, 9, 12 and 15 d, consecutively. The micro-aerobic SBR system was able to support lactic acid bacteria (LAB) growth with long SRT (12 and 15 d), due to at least 3 factors: the large inoculum size employed, relatively high concentration of lactic acid produced, and the change in pH during the restoring stage. Current process offered a possible alternative to the more costly chemical and other biological pre-treatments. © 2008 Elsevier Ltd. All rights reserved.
URI: http://www.scopus.com/inward/record.url?eid=2-s2.0-62049083650&partnerID=40&md5=af3d873a9ec3dbfc9406d838c4c31bb3
http://cmuir.cmu.ac.th/handle/6653943832/602
ISSN: 13595113
Appears in Collections:AGRO: Journal Articles

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