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Aerobic granular sludge: Recent advances

Paper ID Volume ID Publish Year Pages File Format Full-Text
14775 1247 2008 13 PDF Available
Aerobic granular sludge: Recent advances

Aerobic granulation, a novel environmental biotechnological process, was increasingly drawing interest of researchers engaging in work in the area of biological wastewater treatment. Developed about one decade ago, it was exciting research work that explored beyond the limits of aerobic wastewater treatment such as treatment of high strength organic wastewaters, bioremediation of toxic aromatic pollutants including phenol, toluene, pyridine and textile dyes, removal of nitrogen, phosphate, sulphate and nuclear waste and adsorption of heavy metals. Despite this intensive research the mechanisms responsible for aerobic granulation and the strategy to expedite the formation of granular sludge, and effects of different operational and environmental factors have not yet been clearly described. This paper provides an up-to-date review on recent research development in aerobic biogranulation technology and applications in treating toxic industrial and municipal wastewaters. Factors affecting granulation, granule characterization, granulation hypotheses, effects of different operational parameters on aerobic granulation, response of aerobic granules to different environmental conditions, their applications in bioremediations, and possible future trends were delineated. The review attempts to shed light on the fundamental understanding in aerobic granulation by newly employed confocal laser scanning microscopic techniques and microscopic observations of granules.

AGSBR, aerobic granular sludge membrane bioreactor; AOB, ammonium oxidizing bacteria; AUFB, aerobic upflow fluidized bed; CLSM, confocal laser scanning microscope; COD, chemical oxygen demand; Con A, concanavalin A; DO, dissolved oxygen; EEM, excitation–e
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Aerobic granular sludge: Recent advances
Database: Elsevier - ScienceDirect
Journal: Biotechnology Advances - Volume 26, Issue 5, September–October 2008, Pages 411–423
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Physical Sciences and Engineering Chemical Engineering Bioengineering