Hybrid photocatalysis and microfiltration pretreatment for organic fouling control of reverse osmosis membrane

... HYBRID PHOTOCATALYSIS AND MICROFILTRATION PRETREATMENT FOR ORGANIC FOULING CONTROL OF REVERSE OSMOSIS MEMBRANE LIU HONGYU (M Eng., Beijing Univ of Civil Eng & Arch.) A THESIS SUBMITTED FOR ... method for effective alleviation and control of organic fouling in RO process The primary objective of this study was to develop a novel pretreatment method...

Ngày tải lên: 14/09/2015, 08:40

... Concentration Polarization in a Long RO Membrane Channel 100  6.1 Calculation of concentration polarization 101  6.2 Variation of permeate flux along the channel 104  6.3 Variation of rejection along ... and concentration polarization The effect of spacers on minimizing concentration polarization formation was also investigated Chapter – Organic fouling development in a lo...

Ngày tải lên: 14/09/2015, 08:25

... MESOPOROUS NANOCOMPOSITES TIO2/ MCM- 41 SYNTHESIZED FROM FLY ASH FOR PHOTO- CATALYSIS DEGRADATION OF REVERSE OSMOSIS CONCENTRATE WU YE (M.Sc., Peking University) A THESIS SUBMITTED FOR THE ... by-product, namely fly ash In this study, mesoporous F -MCM- 41 (Fly ash Al -MCM- 41) materials synthesized from fly ash was used as the carrier of...

Ngày tải lên: 26/11/2015, 10:49

... ASTM Annual Book of Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, ... present, add 80 mg of sodium thiosulfate per liter of sample and mix well EPA Methods 330.4 and 330.5 may be used for measurement of residual chlorine.9 Field tes...

Ngày tải lên: 14/02/2014, 03:20

... secondary dilution standard be prepared at a concentration of 15 µg/mL of each internal standard compound The addition of 10 µL of this standard to 5.0 mL of sample or calibration standard would be ... the chemical analysis Additional references to laboratory safety are available and have been identified4,6 for the information of the analyst Apparatus and Materials 5.1 S...

Ngày tải lên: 14/02/2014, 03:20

... program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain records to * ... µg/mL of each internal standard compound The addition of 10 µL of this standard to 5.0 mL of sample or calibration standard would be equivalent to 30 µg/L 7.3.3 Analyze eac...

Ngày tải lên: 05/03/2014, 21:20

... requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain records ... µL, analyze each calibration standard according to Section 11 and tabulate peak height or area responses against concentration for each compound and internal st...

Ngày tải lên: 05/03/2014, 21:20

... more stock standards to a volumetric flask To each calibration standard, add a known constant amount of one or more internal standards, and dilute to volume with mobile phase One of the standards ... capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain records to document the quality of data that...

Ngày tải lên: 14/03/2014, 20:20

... µL, analyze each calibration standard according to Section 12 and tabulate peak height or area responses against concentration for each compound and internal standard Calculate response factors ... operate a formal quality control program The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spike...

Ngày tải lên: 14/03/2014, 20:20

... processed as a safeguard against laboratory contamination 8.1.4 The laboratory must, on an ongoing basis, spike and analyze a minimum of 10% of all samples to monitor and evaluate laboratory data quality ... demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain records to...

Ngày tải lên: 22/03/2014, 14:20

... Standards, Part 31, D3694-78 “Standard Practices for Preparation of Sample Containers and for Preservation of Organic Constituents,” American Society for Testing and Materials, Philadelphia “Carcinogens-Working ... demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain record...

Ngày tải lên: 28/03/2014, 19:20

... demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality The laboratory must maintain records to document the quality of data that is ... processed as a safeguard against laboratory contamination 8.1.4 The laboratory must, on an ongoing basis, spike and analyze a minimum of 10% of all samples with native 2...

Ngày tải lên: 28/03/2014, 20:20

... overview of the progress made by using different types of promoters and vectors for gene delivery to the CNS 1.1 Current progress in gene therapy Gene therapy, which usually refers to somatic gene therapy, ... by the selection of promoters The gene delivery vector that carries and transfers the gene into the nuclei of target cell is another...

Ngày tải lên: 16/09/2015, 08:30