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A kind of bacillus cereus fnxj1‑2‑3 resistant to electroplating nickel bath solution for aluminum profiles and its application

A technology of Bacillus cereus and electroplating nickel, applied in the direction of bacteria, microorganism-based methods, water/sludge/sewage treatment, etc., can solve the problems of complex heavy metal components, waste of resources, pollution and hazards, and achieve good application prospects , the effect of excellent nickel enrichment ability and growth activity

Active Publication Date: 2018-01-05
YANCHENG INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2011, China was the largest market for the consumption of aluminum profiles in the world, accounting for about 58% of the global consumption of aluminum profiles. my country’s aluminum profile industry has been in existence for more than 50 years. , surface treatment, and waste recycling technologies still have room for further improvement
Nickel electroplating bath solution for aluminum profiles is a high-nickel solution of sulfuric acid and boric acid. It contains complex heavy metal components and is strongly acidic. If it is accidentally discharged into the natural world, it will inevitably cause serious pollution and harm, and also lead to a lot of waste of resources.

Method used

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  • A kind of bacillus cereus fnxj1‑2‑3 resistant to electroplating nickel bath solution for aluminum profiles and its application
  • A kind of bacillus cereus fnxj1‑2‑3 resistant to electroplating nickel bath solution for aluminum profiles and its application
  • A kind of bacillus cereus fnxj1‑2‑3 resistant to electroplating nickel bath solution for aluminum profiles and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Isolation, purification and identification of Bacillus cereus FNXJ1-2-3

[0029] 1. Separation and purification

[0030] Enrichment culture: take the activated sludge (moisture content is 16.94 ± 1.47%, pH is 5.09 ± 0.21, soil organic matter is 304.85 ± 6.95g / kg, total nitrogen 41.90±3.10g / kg, total phosphorus 24.95±2.05g / kg), packaged in aseptic bags and stored in a 4°C refrigerator. Diluted with distilled water to 1 times, 1 / 2 times, 1 / 3 times, 1 / 4 times, 1 / 5 times, 1 / 10 times and 1 / 20 times of 100mL electroplating nickel bath solution for aluminum profiles and collected activity Put about 10L of sludge together into a 250mL Erlenmeyer flask equipped with glass beads. In addition, use double distilled water to make a comparison in the same way. Carry out aerobic culture and anaerobic culture sealed in liquid paraffin in a constant temperature shaker at 33°C and 160r / min for 7-15 days to obtain enriched culture solution.

[0031]Primary screening: Take 1m...

Embodiment 2

[0041] Embodiment 2: the electroplating nickel bath solution treatment effect of aluminum profiles under aerobic and anaerobic conditions of Bacillus cereus FNXJ1-2-3

[0042] Take 1000ml of electroplating nickel bath solution for aluminum profiles, and add K to it successively 2 HPO 4 4.35g, KH 2 PO 4 1.7g, NH 4 NO 3 1.05g, MgSO 4 ·7H 2 O 0.2g, MnSO 4 0.05g, FeSO 4 ·7H 2 O 0.001g, adjust the pH to 4.2 with 1mol / L HCl to obtain a fermentation broth.

[0043] The bacillus cereus FNXJ1-2-3 that embodiment 1 obtains is diluted into the bacterium suspension of appropriate concentration with sterile water, inoculates in the fermentation broth of 100mL, makes the inoculum size of bacillus cereus FNXJ1-2-3 be 3.38×10 7 strains / ml fermentation broth, and then cultured in a 35°C water bath with a constant temperature shaker for 4 days. The culture is divided into aerobic group and anaerobic group, wherein the aerobic group is 160r / min shaking culture, the bottled volume ...

Embodiment 3

[0048] Embodiment 3 investigates the treatment effect of aluminum profile nickel electroplating bath solution with different inoculum amounts of Bacillus cereus FNXJ1-2-3

[0049] Substantially the same as in Example 2, the difference is that the inoculum size of Bacillus cereus FNXJ1-2-3 was investigated to be 1.0×10 7 strain / ml fermentation broth, 2.0×10 7 strain / ml fermentation broth, 4.0×10 7 strain / ml fermentation medium, 5.0×10 7 strains / ml fermentation broth, 8.0×10 7 The treatment of aluminum profile nickel electroplating bath solution when each strain / ml fermentation culture solution; the culture condition is 35°C, 160r / min; the bottled volume of the culture solution is 35%.

[0050] After cultivating for 4 days, the bacteria content and nickel content in the culture solution were measured, and the nickel-rich rate (%) was calculated. The results are shown in Table 3.

[0051] The test result of Bacillus cereus FNXJ1-2-3 fermented and cultivated for 4 days with di...

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Abstract

The invention discloses the screening and application of Bacillus cereus FNXJ1-2-3, an advantageous nickel-rich fungus in the electroplating nickel bath solution for aluminum materials. The Bacillus cereus (Bacillus cereus) FNXJ1‑2‑3 was deposited in the China General Microorganism Culture Collection and Management Center on September 19, 2014, and the preservation number is CGMCC No.9683. The bacterial strain provided by the invention can tolerate the alkalinity of pH 4.2-4.5, and can exhibit excellent nickel-enrichment ability and growth activity, and has a good application prospect in the biological purification of nickel electroplating bath solution for aluminum profiles.

Description

technical field [0001] The invention belongs to the technical field of microbial application, and relates to the screening and application of a facultative aerobic aluminum-resistant profile nickel-plating bath solution in an activated sludge, which is rich in nickel-rich bacteria Bacillus cereus FNXJ1-2-3. Background technique [0002] The finished aluminum profile is made of raw material aluminum and metal elements such as magnesium, silicon, copper, iron, zinc, etc., which are smelted into aluminum alloy, and the aluminum alloy is then extruded. As of the end of 2011, the global production capacity of aluminum profiles was about 26.38 million tons. The global consumption of aluminum profiles increased from approximately 13,200,000 tons in 2007 to approximately 19,490,000 tons in 2011 (of which industrial profiles accounted for 33% and architectural profiles accounted for 67%). In 2011, China was the largest market for the consumption of aluminum profiles in the world, ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C02F3/34C12R1/085C02F101/20C02F103/16
CPCC02F3/34C02F2101/20C02F2103/16C12N1/205C12R2001/085
Inventor 李朝霞刘友丁成赵莹沈丹甘海芬王莲李光斌
Owner YANCHENG INST OF TECH