Focused on the research and development and production of resin materials and resin end products - Hebei Lijiang
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AboutHebei Lijiang Biotechnology Co., Ltd. is a new material manufacturer specializing in the production of functional special ion exchange resins and disposable blood perfusion devices. It is a modern high-tech enterprise integrating the research and development, production, sales, and service of resin materials and resin end products. The company was established in April 2014 with a registered capital of 52 million yuan. It plans to cover an area of 267 acres and is located in the High-tech Industrial Park of Weixian County, Hebei Province—New Material Demonstration Park. The total investment is 510 million yuan. It is a council member unit of the Ion Exchange Resin Branch of the China Membrane Industry Association.
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Product
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BlogsThe company will focus on the high-end market, with the purpose of serving society, solidly carrying out technological innovation and product promotion, continuously improving the development and expansion of ion exchange resin products in emerging application fields, thereby promoting the upgrading and development of related industries.
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Company AlbumThe current phase of construction has been fully completed and put into operation, featuring a comprehensive workshop with 42 production lines for functional ion exchange resins with an annual output of 16,800 tons and a production capacity of 30,000 tons, a wastewater treatment plant with an annual treatment capacity of 403,000 tons, and a workshop producing 5,000 tons of medical-grade magnesium sulfate annually. Trial production began in July 2016, with official production starting in January 2017.
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X-5
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1. Product Introduction:
X-5 is a type of broad-spectrum adsorption resin, belonging to the polystyrene system, obtained through a special process to create a structure with uniform pore size and high specific surface area. The pore size is medium-sized, and it forms a series of large, medium, and small pore sizes. AB-8 and CAD-40 X-5 is mainly used for the extraction of substances with medium pore sizes. In recent years, with the popularization and rapid development of resin extraction technology, X-5 resins have been well applied in the purification of many substances, making outstanding contributions to the development of the national economy.
Corresponding foreign products: Diaion HP10, HP20，HP40
2. Performance Indicators:
Appearance
White opaque spheres
Resin Structure
PSt
Polarity
Non-polar
Moisture Content
65%~75%
Wet True Density
1.03~1.10g/ml
Wet Apparent Density
0.65~0.75g/ml
Specific Surface Area
500~600m²/g
Average Pore Diameter
29~30nm
Porosity
50%~60%
Particle Size Range
0.3~1.25mm≥90%
3. Reference Operating Conditions:
1. Adsorption:
Filling Height
≤3m
Flow Rate
1~6m/h
Organic impurity concentration (such as acetic acid, acetone, methanol, benzene, formic acid, etc.)
<1
pH Value
4~6
2. Desorption:
Desorption Liquid
1~2N NaOH
Methanol or acetone
Dosage
2~4BV
2BV
Flow Rate
≤5m/h
≤5m/h
4. Product Applications:
Mainly used for antibiotics, traditional Chinese medicine extraction and separation, plasma separation and purification, preparation of stationary phases for trace element enrichment, organic wastewater treatment, etc.
Examples:
1. Adsorption of hawthorn flavonoids: using a concentration of 2.0 mg/mL hawthorn flavonoid aqueous solution, pH value is 3 for column adsorption, , column flow rate is 3 BV/h, adsorption effect is best. ; Using 3 BV volume fraction of 70% ethanol as the desorption agent, the desorption rate is relatively high. ,解吸率较高。
2. Adsorption of morning glory red pigment: X-5 resin has a strong ability to adsorb morning glory red pigment, , adsorption amount is 76.1 mg/g wet resin. ; Methanol is the best eluent for elution. , Elution recovery rate is about 92%. 左右。
3. Sorghum fruit red pigment: adsorption rate reaches 96.17%, desorption rate is 94.40%; appropriate pigment solution concentration, flow rate, NaCl mass fraction and temperature can all increase X-5 the adsorption rate of pigment by the resin. , Using 80% ~ 95% EtOH as the eluent, , the elution effect is best.
4. Lycopene and p -carotene: X-5 Resin has a higher adsorption capacity for lycopene and p beta-carotene, which are respectively 7. 44 and 11.2 mg/g , and the desorption rate is also relatively high.
5. Pretreatment of resin
Industrial-grade resin may contain chemical residues such as dispersants, pore-forming agents, and inert solvents, so it should be pretreated according to the following steps before use.
1. Before packing the column, clean the adsorption column and pipelines, and drain the water inside the equipment to prevent contamination of the resin by harmful substances.
2. Add water equivalent to the resin filling volume into the adsorption column, 0.5 then put the new macroporous resin into the column, release the excess water from the bottom of the column, and keep the water level about 20 centimeters above the resin layer surface until all the resin is transferred into the column.
3. Slowly add water from the bottom of the resin, gradually increase the water flow rate to make the resin bed nearly fully expanded, maintain this backwash flow rate until all bubbles are expelled and all particles are fully expanded; small resin particles will be flushed out.
4. Use 2 times the resin bed volume ( 2BV ) of ethanol, pass through the resin layer at a flow rate of 2BV/h , and keep the liquid level height, soaking overnight.
5. Use 2.5-5BV ethanol, 2BV/H at a flow rate of
to wash the resin layer until the effluent mixed with water is no longer white and turbid. a. 6. Release a small amount of ethanol from the column to check if the resin is clean; if not, continue washing the column with ethanol until it meets the requirements. Inspection method: 10 Detection of water-insoluble substances: take an appropriate amount of ethanol eluate, mix with an equal volume of deionized water, the solution should be clear; then place at 30 °C for b. minutes, the solution should remain clear. 200-400nm Check for non-volatile substances: take an appropriate amount of ethanol eluate, scan the UV spectrum within the range of 250nm ; there should be no obvious UV absorption around
7. Use deionized water at a flow rate of 2BV/H to wash the resin layer to remove ethanol.
8. Use 2BV 4% HCL solution, pass through the resin layer at a flow rate of and soak for 5BV/h hours, then wash with deionized water at the same flow rate until the wash water is neutral (pH 3 tested with pH test paper pH=7 ). 9. Use 2.5BV 5%
NaOH at a flow rate of HCL to pass through the resin layer and soak. and soak for 5BV/h 10. Method to determine the endpoint when resin adsorption reaches saturation: pass the drug solution through the resin column at a certain speed, near the estimated dosage, take about 3 tested with pH test paper pH=7 ). 9. Use 2.5BV 5%
of the effluent, place it in a stoppered test tube, seal tightly and shake vigorously. Observe the foam duration; if the foam lasts for more than 3ml minutes, it is positive, indicating the resin has reached saturation. 10ml 6. Others 15 1. Transportation and storage of the product:
The product should be stored wet, preferably at temperatures above
0 degrees; for long-term storage, it can be sealed or immersed in saline water above
; during transportation, the main concern is to prevent freezing, and heavy objects should not be placed on the resin to avoid crushing. 2. Before the liquid enters the resin column, it should undergo flocculation, filtration, or sand filtration to ensure it does not contain suspended solids to prevent clogging the resin pores. 5% 3. Resin that is not used for a long time in the column should preferably be cleaned and removed for storage, or immersed in saline solution in a salt-resistant medium. If stored in the column, the surface must not dry out, and periodic backwashing of the resin is required to loosen the resin and prevent caking and spoilage.
2．液体在进树脂柱之前，应经絮凝、过滤或沙滤等步骤，确保不含悬浮物，以免堵塞树脂孔道。
3．柱内长期不用树脂最好洗净后掏出保存，或者在抗盐介质内可加盐水，如保存在柱内需要保持页面不可脱水，同时还需要不定期的反洗树脂，目的是松动树脂，以防结块报废。
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