CN101759270B - Method for removing heavy metal cadmium from water solution - Google Patents

Method for removing heavy metal cadmium from water solution Download PDF

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Publication number
CN101759270B
CN101759270B CN 200810185075 CN200810185075A CN101759270B CN 101759270 B CN101759270 B CN 101759270B CN 200810185075 CN200810185075 CN 200810185075 CN 200810185075 A CN200810185075 A CN 200810185075A CN 101759270 B CN101759270 B CN 101759270B
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China
Prior art keywords
cadmium
dry powder
shi
heavy metal
shi yeast
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Expired - Fee Related
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CN 200810185075
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Chinese (zh)
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CN101759270A (en
Inventor
徐莹
汪东风
刘婍
李春生
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Ocean University of China
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Ocean University of China
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  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

The invention provides a method capable of removing heavy metal cadmium from a water solution, which comprises the following steps: preparing zygosaccharomyces rouxii dry powder by zygosaccharomyces rouxii; then, putting the zygosaccharomyces rouxii dry powder into a cadmiferous solution; controlling the proper conditions; and removing the cadmium from the water solution through removing the zygosaccharomyces rouxii absorbed with cadmium ions. The invention has the advantages of simple process, high removal efficiency, low cost, high safety, no secondary pollution and the like. The invention has great significance on the removal of the cadmium ions from the water, and has wide application prospects in the fields of sewage treatment, drinking water purification, food production and biochemical industry.

Description

A kind of method that removes heavy metal cadmium in the aqueous solution
Technical field
The present invention relates to a kind of method that removes heavy metal cadmium in the aqueous solution, belong to technical field of food biotechnology.
Background technology
Cadmium is the toxic elements in human body element.Environmental pollution causes water pollution, cause some food raw material especially in the fishery products cadmium content exceed standard, threatening human health.The present cadmium method of taking off mainly contains the precipitator method etc.Advantages such as mikrobe Yin Qiyi cultivates, breeding is fast and become research and the application direction that removes heavy metal.
The Lu Shi yeast is prone to cultivate, and is the main starter on the fermentative prodn such as soy sauce and sauce.The present invention utilizes the Lu Shi yeast to the favourable absorption property of cadmium and the sedimentation effect of itself, from contain the cadmium aqueous solution, removes cadmium ion.The Lu Shi yeast cell prepares through microbial fermentation technology and Freeze Drying Technique, obtains exsiccant, anti-transportation, is prone to the solid of preservation.Put into the solution that contains the finite concentration cadmium ion, the CONTROL PROCESS condition removes heavy metal cadmium, for containing the cadmium WWT a kind of method is provided.
The patented process of handling industrial waste water containing Cd at present has: CN200810011100.9 and CN200610017040.2 are and utilize beer waste yeast, and CN200610057596.4 adopts a kind of bacillus cereus that takes off cadmium as biological adsorption agent.CN200710030649.8 utilizes xylophyta carambola (Averrhoa carambola L.), activation and absorb contaminated soil or water body in cadmium.CN200810124261.9 spartina alterniflora loisel gac also can be administered cadmium wastewater.CN200510031203.8 method of utilizing mushroom culture medium waste to remove industrial waste water containing Cd.CN94106775.0, CN99103774.X and CN00131216.2 all belong to and relate to the method that adds the heavy metals such as cadmium in the chemical reagent deposition trade effluent.CN03125232.X relates to a kind of method of utilizing rock pit wood material to remove arsenic and cadmium in the waste water.
About Lu Shi zymic patent has: the Lu Shi yeast that CN200610043899.0 and CN200510045226.4 relate to is all as one of soy sauce and sweet fermented flour sauce flavouring starter; The Lu Shi yeast that CN01116463.8 and CN99124706.X relate to is all as being microbial starter culture.
Do not see at present and adopt Lu Shi yeast dry powder to remove the patented process of the heavy metal cadmium in the aqueous solution.
Advantage of the present invention is, Lu Shi yeast dry powder is easy to preparation, and it is simple to take off cadmium technology, high adsorption capacity and fast; Yeast is prone to and water sepn, except that cadmium efficient is high, cost is low, security good, do not cause secondary pollution etc.Cadmium ion to removing in the aqueous solution is significant, as in WWT, purifying drinking water source, contain fields such as the protein enzyme solution of cadmium, the herbal medicine decocting liquid that contains cadmium and biochemical industry very wide application prospect arranged.
Summary of the invention
The objective of the invention is provides a kind of Lu Shi of application yeast dry powder to remove the method for the heavy metal cadmium in the aqueous solution for the defective that overcomes prior art.
This takes off the cadmium method: be inoculated in wort or the YEPD substratum commonly used 20~38 ℃ of constant temperature culture, collecting cell behind the Lu Shi activated yeast with preservation (commercial back preservation cryogenic refrigerator in); After the freeze-drying; Be prepared into yeast dry powder, dry powder put into contained in the heavy metal cadmium aqueous solution then, the control adsorption conditions adsorbs; Leave standstill, make the yeast natural subsidence.
Lu Shi yeast dry powder is put into and is contained finite concentration (in 0.01~200mg/L) the cadmium-ion solution; Make and add that cell concentration is 0.1~9.5g/L behind the Lu Shi yeast dry powder; 0~40 ℃ of adjustment solution temperature; Regulate the pH value at 4~7 scope, the Clothoid type oscillation frequency 0~100rpm of adsorption process, treatment time 5~60min; Static 60~180min, yeast sedimentation is separated and is removed the Lu Shi yeast that is adsorbed with cadmium ion, can reach to remove the cadmium more than 80% in the solution.
Embodiment
The Lu Shi barms of preservation after 28~30 ℃ of activation of wort or YEPD solid inclined-plane, is prepared into wort or YEPD liquid seeds commonly used, is inoculated in the YEPD fermention medium by inoculum size 2~10%; Liquid amount is 5~60%, 20~38 ℃ of constant temperature, rotating speed 100~300rpm; Cultivate 10~48h, with the centrifugal 10~30min of the centrifugal 1500~6000rpm of fermented liquid, collecting cell and with behind the distilled water wash; Freeze-drying grinds and screening, is prepared into Lu Shi yeast dry powder.Lu Shi yeast dry powder is put in the solution that contains heavy metal cadmium; Be processed liquid concentration of cadmium ions 0.01~200mg/L; Add that cell concentration is 0.1~9.5g/L behind the Lu Shi yeast dry powder, oscillation frequency is at 0~100rpm, 1~40 ℃ of temperature; The pH value that adjustment contains cadmium liquid is 4~7, adsorption time 1~60min; Remove the Lu Shi yeast that is adsorbed with cadmium behind static 60~180min.
Embodiment 1
The Lu Shi barms of preservation after 28 ℃ of activation of YEPD solid inclined-plane constant temperature, is prepared into liquid seeds commonly used, liquid seeds is inoculated in the YEPD fermention medium inoculum size 5%; Liquid amount is 50%, 30 ℃ of constant temperature, rotating speed 180rpm; Cultivate 12h, with the centrifugal 10min of fermented liquid 4200rpm, collecting cell is also used distilled water wash; After the lyophilize, grind and screening, be prepared into Lu Shi yeast dry powder.Reach the amount of 5g/L by adding cell concentration behind the Lu Shi yeast dry powder, Lu Shi yeast dry powder is put into contained in the 10mg/L cadmium solution, the pH value that adjustment contains cadmium liquid is 5.0, room temperature, and 30min is adsorbed in concussion once in a while; Behind the static 60min, separate and remove the Lu Shi yeast that is adsorbed with cadmium.
Embodiment 2
The Lu Shi barms of preservation after 30 ℃ of activation of wort solid inclined-plane constant temperature, is prepared into wort liquid seed, liquid seeds is inoculated in the YEPD fermention medium inoculum size 7%; Liquid amount is 40%, 28 ℃ of constant temperature, rotating speed 160rpm; Cultivate 22h, with the centrifugal 20min of fermented liquid 3000rpm, collecting cell is also used distilled water wash; After the lyophilize, grind and screening, be prepared into Lu Shi yeast dry powder.Reach the amount of 4g/L by adding cell concentration behind the Lu Shi yeast dry powder, Lu Shi yeast dry powder is put into contained in the 50mg/L cadmium solution, the pH value that adjustment contains cadmium liquid is 6.0,30 ℃ of temperature, and concussion frequency 100rpm adsorbs 20min; Behind the static 120min, separate and remove the Lu Shi yeast that is adsorbed with cadmium.
Embodiment 3
The Lu Shi barms of preservation after 29 ℃ of activation of wort solid inclined-plane constant temperature, is prepared into YEPD liquid seeds commonly used, liquid seeds is inoculated in the YEPD fermention medium inoculum size 6%; Liquid amount is 20%, 35 ℃ of constant temperature, 150rpm; Cultivate 24h, with the centrifugal 30min of fermented liquid 3500rpm, collecting cell is also used distilled water wash; After the lyophilize, grind and screening, be prepared into Lu Shi yeast dry powder; Reach the amount of 4.5g/L according to adding cell concentration behind the Lu Shi yeast dry powder, Lu Shi yeast dry powder is put into contained in the 100mg/L cadmium solution, it is 7.0 that adjustment contains the cadmium liquid pH value; 10 ℃ of temperature, concussion frequency 60rpm, absorption 20min; Behind the static 180min, separate and remove the Lu Shi yeast that is adsorbed with cadmium.

Claims (1)

1. method that removes heavy metal cadmium in the aqueous solution is characterized in that the preparation of Lu Shi yeast dry powder and removes the method for heavy metal cadmium in the aqueous solution, the steps include: the Lu Shi activated yeast that the inclined-plane is preserved and is prepared into seed liquor; Get an amount of seed liquor and be inoculated into and be equipped with in the yeast culture base of having sterilized, 20~38 ℃ of constant temperature are 100~300r/min down, liquid amount 5~60%; Cultivate 10~48h; Fermented liquid is collected thalline and washing through the centrifugal 5~30min of 1500~6000r/min, and lyophilize is pulverized; Screening is prepared into Lu Shi yeast dry powder; Utilize Lu Shi yeast dry powder to remove that the condition that removes of heavy metal cadmium is in the aqueous solution: solution temperature is 1~50 ℃; The pH value is in 4~7 scope; Oscillation frequency 0~150r/min in the adsorption process; Be processed liquid concentration of cadmium ions 0.01~200mg/L, cell concentration is 0.1~9.5g/L behind the adding Lu Shi yeast dry powder, treatment time 5~60min; Static then 60~180min removes the Lu Shi yeast that is adsorbed with cadmium ion.
CN 200810185075 2008-12-25 2008-12-25 Method for removing heavy metal cadmium from water solution Expired - Fee Related CN101759270B (en)

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102070252B (en) * 2010-11-29 2012-02-08 湖南大学 Application of thioacetamide in aspect of promoting extracellular cadmium crystalline particles to aggregate and grow
CN102674494A (en) * 2012-04-28 2012-09-19 华南农业大学 Method for recovering heavy metal cadmium ions in water by using shells of apple snails
CN104489489B (en) * 2015-01-12 2017-05-03 湖南农业大学 Method for reducing heavy metal cadmium in rice by utilizing mixed fermentation of lactobacillus and saccharomycetes
CN111925950A (en) * 2020-03-17 2020-11-13 徐州工程学院 High-cadmium-resistance strain and separation and screening method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003099730A1 (en) * 2002-05-23 2003-12-04 Minaki Advance Co., Ltd. Water clarifying agent inducing catalytic reaction and method of clarifying water through activation of microorganism
CN1900271A (en) * 2005-07-22 2007-01-24 国家海洋局第三海洋研究所 Ocean salt monad and its using method in biological flocculation and heavy metal adsorption
CN101082035A (en) * 2006-06-01 2007-12-05 上海泓宝绿色水产科技发展有限公司 Preparation of dotey bacterium and method for restoring shellfish culture environment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003099730A1 (en) * 2002-05-23 2003-12-04 Minaki Advance Co., Ltd. Water clarifying agent inducing catalytic reaction and method of clarifying water through activation of microorganism
CN1900271A (en) * 2005-07-22 2007-01-24 国家海洋局第三海洋研究所 Ocean salt monad and its using method in biological flocculation and heavy metal adsorption
CN101082035A (en) * 2006-06-01 2007-12-05 上海泓宝绿色水产科技发展有限公司 Preparation of dotey bacterium and method for restoring shellfish culture environment

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