Development of continuous chitinase production process in a membrane bioreactor by Paenibacillus sp. CHE-N1

Kao, Po-Min; Huang, Shu-Chen; Chang, Yung-Chi; Liu, Yung-Chuan

doi:10.1016/j.procbio.2006.11.009

Cited by 21 publications

(9 citation statements)

References 38 publications

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“…It determines their high potential in various membrane processes such as nano‐, ultra‐, and microfiltration . The industrial applications of ceramic membranes include desalination and wastewater treatment, separation and purification of gases, catalysis, biochemical processing, production of food, etc.…”

Section: Introductionmentioning

confidence: 99%

Carbon Coated Alumina Nanofiber Membranes for Selective Ion Transport

et al. 2017

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The authors propose a novel type of ion-selective membranes, which combine the advantages of ceramic nanofibrous media with good electrical conductivity. The membranes are produced from Nafen alumina nanofibers (diameter around 10 nm) by filtration of nanofiber suspension through a porous support followed by drying and sintering. Electrical conductivity is achieved by depositing a thin carbon layer on the nanofibers by chemical vapor deposition (CVD). Raman and FTIR spectroscopy, X-ray fluorescence analysis, and TEM are used to confirm the carbon structure formation. The deposition of carbon leads to decreasing porosity (from 75 to 62%) and specific surface area (from 146 to 107 m 2 g À1 ) of membranes, while the pore size distribution maximum shifts from 28 to 16 nm. Measurements of membrane potential in an electrochemical cell show that the carbon coated membranes acquire high ionic selectivity (transference numbers 0.94 for anion and 0.06 for cation in aqueous KCl). Fitting the membrane potential data by the Teorell-Meyer-Sievers model shows that the fixed membrane charge increases proportionally with increasing electrolyte concentration. The carbon coated membranes are ideally polarizable for applied voltages from À0.5 to þ0.8 V. The potential applications of produced membranes include nano-and ultrafiltration, separation of charged species, and switchable ion-transport selectivity.

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Section: Introductionmentioning

confidence: 99%

Carbon Coated Alumina Nanofiber Membranes for Selective Ion Transport

et al. 2017

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“…Membrane separation processes extend more and more every day in industrial uses, with new requirements concerning the materials and preparation procedures. Due to their potential application in a wide range of industrial processes such as water and effluent treatments [1][2][3][4][5], drink clarification [6,7], milk pasteurization [8][9][10][11], biochemical processing [12], inorganic membrane technology grows in importance.…”

Section: Introductionmentioning

confidence: 99%

Development of an Asymmetric Ultrafiltration Membrane from Naturally Occurring Kaolin Clays: Application for the Cuttlefish Effluents Treatment

Rekik¹,

Bouaziz²,

Deratani³

et al. 2016

J Membra Sci Technol

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This work concerns to the development and characterization of support and ultrafiltration membranes from naturally occurring-kaolin clays as principal components. The preparation and characterization of porous tubular supports, using kaolin powder with corn starch as poreforming agent, were reported. It has been found that the average pore size was about 1 μm while the pore volume was 44% for supports sintered at 1150°C with a flexural strength of about 15 MPa. The deposition of the active layer was performed by slip casting method. The rheological study of various coatings with different concentration of kaolin powder, polyvinyl alcohol (PVA) and water under different conditions regarding temperature and stirring time was done. After drying at room temperature for 24 h, the membrane was sintered at 650°C. The average pore diameter of the active layer was 11 nm and the thickness was around 9 µm. The determination of the water permeability shows a value of 78 l/h.m 2 .bar. This membrane can be used for crossflow ultrafiltration. The application of the cuttlefish effluent treatment shows an important decrease of turbidity, inferior to 1.5 NTU and chemical organic demand (COD), retention rate of about 87%. So, it seems that this membrane is suitable to use for wastewater treatment.

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“…The interest in separation by the use of inorganic membranes has rapidly increased during the last two decades. Due to their potential application in a wide range of industrial processes such as water and effluent treatments [1][2][3][4][5], drink clarification [6][7][8], milk pasteurisation [9][10][11][12][13], biochemical processing [14,15], inorganic membrane technologies have achieved an increasing importance. Ceramic membranes have many known advantages such as high thermal and chemical stability, pressure resistance, long lifetime, and catalytic properties from their intrinsic nature [16,17].…”

Section: Introductionmentioning

confidence: 99%