Porous structure and spatial characteristics of aerobic granules Online publication date: Wed, 16-Mar-2011
by Z.H. Li, X.C. Wang, T. Kuba, T. Kusuda
International Journal of Environment and Pollution (IJEP), Vol. 45, No. 1/2/3, 2011
Abstract: Cryosectioned granules were observed in microstructure, Extracellur Polymeric Substances (EPS) and metal distribution. Aerobic granules composed of pores and channels that were not plugged by EPS, with rather open structure. Microorganisms proliferated mainly on the surface of granule and on the wall of channels, carbohydrate EPS mainly distributed on the surface of granules, and protein EPS mainly distributed in the interior part of granules. Also, aerobic granules accumulated considerable calcium and phosphorus, which increase the ash solid fraction of granules and thus improve the settleability. Additionally, iron was neither temporally accumulated nor heterogeneously spatially distributed.
Online publication date: Wed, 16-Mar-2011
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