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GB/T 37617-2019 English PDF

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GB/T 37617-2019: Test methods for Zeta potential of nanofiltration membrane surface - Streaming potential measurement
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 37617-2019	English	199	Add to Cart	3 days [Need to translate]	Test methods for Zeta potential of nanofiltration membrane surface - Streaming potential measurement	Valid	GB/T 37617-2019

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Basic data

Standard ID	GB/T 37617-2019 (GB/T37617-2019)
Description (Translated English)	Test methods for Zeta potential of nanofiltration membrane surface - Streaming potential measurement
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	J77
Classification of International Standard	07.060; 23.100.60
Word Count Estimation	10,158
Date of Issue	2019-06-04
Date of Implementation	2020-05-01
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration

GB/T 37617-2019: Test methods for Zeta potential of nanofiltration membrane surface - Streaming potential measurement

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test methods for Zeta potential of nanofiltration membrane surface--Streaming potential measurement ICS 07.060; 23.100.60 J77 National Standards of People's Republic of China Nanofiltration membrane surface zeta potential test method Flow potential method Published on.2019-06-04 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Separation Membrane Standardization Technical Committee (SAC/TC382). This standard was drafted. Tianjin Membrane Engineering Technology Co., Ltd., Yantai Jinzheng Environmental Protection Technology Co., Ltd., Tianjin Membrane Technology Group Co., Ltd., Shandong Zhaojin Membrane Co., Ltd., Jiangsu Jiuwu High-Tech Co., Ltd., Hangzhou Tianchuang Environmental Technology Co., Ltd. Company, Tianjin Polytechnic University, Anton Paar (Shanghai) Trading Co., Ltd., Time Wharton Technology Co., Ltd., National Oceanic Administration Tianjin Seawater Desalination Comprehensive use of research institutes. The main drafters of this standard. Fan Yunshuang, Wang Wei, Miao Jing, Hu Xiaoyu, Wang Xuliang, Wang Le translation, Peng Wenbo, Wang Yanfeng, Li Yeping, Wang Siliang. Nanofiltration membrane surface zeta potential test method Flow potential method

1 Scope

This standard specifies the principle, instrument, conditions and steps for testing the zeta potential of the nanofiltration membrane surface by the flow potential method. This standard applies to the test of zeta potential on the surface of flat nanofiltration membrane. Other flat membranes, tubular membranes and external pressure hollow fiber membranes Zeta The potential test can be used as reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682-2008 Analytical laboratory water specifications and test methods GB/T 6904 Determination of pH in industrial circulating cooling water and boiler water GB/T 6908 Boiler water and cooling water analysis methods - Determination of conductivity

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Nanofiltration membrane A semipermeable membrane for removing multivalent ions, partially monovalent ions, and organic substances having a relative molecular mass greater than.200. Note. Rewrite GB/T 20103-2006, definition 4.1.2. 3.2 Zeta potential Zetapotential The potential difference between the sliding surface in the membrane-liquid electric double layer structure and the solution body. 3.3 Flow potential When the electrolyte solution flows in a capillary channel, the free charged particles in the solid-liquid interface diffusion layer flow along the solution flow direction. The potential difference across the capillary channel produced by the motion.

4 Test principle

During the membrane separation process, some functional groups on the surface of the membrane are dissociated or protonated, or the surface of the membrane is charged by some adsorption. Sexuality, so that the membrane-liquid interface is different from the main body of the solution, which can be described by the theory of electric double layer structure, in which zeta potential The size reflects the chargeability of the film surface. The Zeta potential cannot be measured directly and can be measured indirectly by the flow potential.

5 main reagents

The test reagents are as follows.

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