EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Density, porosity, and pore structure of biofilms


, : Density, porosity, and pore structure of biofilms. Water Research 28(11): 2267-2277

The spatial distributions of biofilm properties have been investigated. Heterotrophic biofilms were cultured by using rotating drum biofilm reactors which were fed to a synthetic wastewater. The biofilm was first cut into 10-20 mu-m thick slices by use of a microtome, and then apportioned into samples representing 3 or 4 layers. By measuring total suspended solids, phospholipid concentrations and AR18 dye adsorption, and using these data with the theoretical model developed in this study, the densities, porosities, specific surface area, and mean pore radius of biofilms were determined. It was found that the densities (with units of mg-TS/cm-3 total biofilm) in the bottom layers were 5-10 times higher than those in the top layers; the ratio of living cells to total biomass decreased from 72 to 91% in the top layers to 31-39% in the bottom layers; the porosities of biofilms changed from 84 to 93% in the top layers to 58-67% in the bottom layers. In contrast, the mean pore radius of biofilms decreased from approximately 1.7-2.7 mu-m in the top layers to 0.3-0.4 mu-m in the bottom layers. The results of this study are helpful in obtaining a much clearer physical description of biofilms.

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 002590506

DOI: 10.1016/0043-1354(94)90042-6

Download PDF Full Text: Density, porosity, and pore structure of biofilms


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Surlan, A.; Virant, J., 1969: Conversion of a typewritten or printed text into speech--a new method of typewriting and reading for the blind. Medical & Biological Engineering 7(4): 423-427

Pace-Asciak, C.R., 2012: Hepoxilins in cancer and inflammation--use of hepoxilin antagonists. Cancer is often accompanied with inflammatory, thrombotic, and diabetic complications. Alternatively, chronic inflammation is believed to be a causative factor in several cancers. This review article brings together reported biological actions in...

Chang N.C.; Chang J.Y.; Zimmerman W.J., 1982: Partial characterization of a crystallizable secretory protein synthesized by activated murine peritoneal macrophages. Federation Proceedings 41(3): ABSTRACT 1703

Wong, C.C.Y.; Schumann, G., 2008: Review. Genetics of addictions: strategies for addressing heterogeneity and polygenicity of substance use disorders. Addictions are common psychiatric disorders that exert high cost to the individual and to society. Addictions are a result of the interplay of multiple genetic and environmental factors. They are characterized by phenotypic and genetic heterogenei...

de Castro, J.T., 1966: Our experience in the surgery of the crystalline lens with a liquid nitrogen cryo-extractor. Revista Brasileira de Oftalmologia 25(3): 215-222

Diaz Hernandez Jose L.; Fernandez Enrique Barahona; Gonzalez Jose Linares, 2003: Organic and inorganic carbon in soils of semiarid regions; a case study from the Guadix-Baza Basin (Southeast Spain). Intramontane sedimentary basins are an important landscape component for the evaluation of soil carbon stored in semiarid regions with Mediterranean climate. We determined the soil organic and inorganic carbon (SOC and SIC) stored at various depth...

Smith, T.A.; Best, G.R., 1978: Distribution of the hordatines in barley. Conc. of agmatine, coumarylagmatine and the antifungal hordatines in the shoots of barley seedlings have been determined at various stages of growth. Coumarylagmatine declined with age on a fresh wt. basis, both in diurnal illumination and in cont...

Miksic, R., 1959: Beitrag zur Kenntnis der Larnellicorniafauna der Appenninen. I. Monti Sibillini. II. Campanische Appenninen. MemStor. nat. Verona: 269-285

Usman, M.A.; Kamei, G.; Adachi, N.; Deie, M.; Nakamae, A.; Ochi, M., 2015: Revision single-bundle anterior cruciate ligament reconstruction with over-the-top route procedure. In revision anterior cruciate ligament reconstruction (ACLR), the single-stage technique and the over-the-top route (OTTR) procedure were usually selected for cases where the bone tunnel cannot be created at an anatomical position due to tunnel en...

Wotton, J.M.; Jenison, R.L., 1997: A backpropagation network model of the monaural localization information available in the bat echolocation system. The information echolocating bats receive is a combination of the properties of the sound they emit and the sound they receive at the eardrum. Convolving the emission and the external ear transfer functions produces the full spectral information c...