CN103848474A - Method for adsorbing heavy metal ions in sewage by using waste yeast - Google Patents
Method for adsorbing heavy metal ions in sewage by using waste yeast Download PDFInfo
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- CN103848474A CN103848474A CN201410128100.2A CN201410128100A CN103848474A CN 103848474 A CN103848474 A CN 103848474A CN 201410128100 A CN201410128100 A CN 201410128100A CN 103848474 A CN103848474 A CN 103848474A
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Abstract
The invention discloses a method for adsorbing heavy metal ions in sewage by using waste yeast. The method comprises the steps: treating the waste yeast by using HCl, NaOH or alcohol, and then adding the treated waste yeast in domestic sewage after cleaning, centrifuging and drying to adsorb the heavy metal ions. The pH value is 2-7 at a temperature of 30 DEG C, the adsorption time is 15-90 min, the adding amount of the yeast is 0.5-5 g/L, the effect of adsorbing the heavy metal ions in the sewage by using the waste yeast treated by the HCl is best, and the adsorption rates of Pb<2+>, Cu<2+> and Cr<6+> are respectively 76.93 percent, 73.14 percent and 45.27 percent. The method is capable of increasing the adsorption rate of single heavy metal ions in the sewage, and increasing the adsorption of a plurality of co-existing ions in the sewage certainly, is low in required cost, free from complicated equipment, and wide in application range.
Description
Technical field
The present invention relates to a kind of method of utilizing waste yeast absorption sewage heavy metal ion.
Background technology
The method of administering at present heavy metal wastewater thereby mainly contains chemical precipitation, ion-exchange, electrochemical treatment, reverse osmosis, membrane technique, distillation, electrodialysis and active carbon adsorption etc., these treatment processs have obtained good effect to a certain extent, but ubiquity secondary pollution, particularly when heavy metal concentration in water lower (﹤ 100 mg ∕ L), not only clearance is lower, and working cost is higher.Due to the feasibility in validity and economy aspect improvement heavy metal-containing waste water, biosorption process is proposing challenge to traditional method aspect removal heavy metal waste water.
Along with the development of urban industry and the growth of population, the increase of Industrial " three Waste ", sanitary sewage has brought very large impact all to agriculture in suburban areas water, soil physico-chemical property, has accelerated water, heavy metals in soil as the accumulation of lead, chromium, copper etc.In city, have the undressed sanitary sewage of 10 ten thousand stere every day according to statistics, with plurality of heavy metal and pathogenic bacteria, discharges along urban drainage pipe network, causes soil Cr, Cu, Pb tri-heavy metal species content to have obvious accumulation.The harmful heavy metal year pollution flux such as Cr, Cu, Pb have been close to or higher than the higher level of international and domestic report, can reach the secondary standard of existing national soil quality in the year two thousand fifty according to current cumulative speed heavy metal ion content, cause heavy metal contamination in various degree, affect agricultural product security, people ' s health has been brought to threat.
Yeast sewage disposal technology is a kind of sewage disposal technology that 20 century 70s rise from Japan, has certain specificity than traditional Activated Sludge Process, and efficiency is 8～10 times of Activated Sludge Process.Because of the germy feature of its tool, as existed with unicellular form, growth and breeding is fast, can form good flocs unit; There is again the feature of filamentous fungus, as cell is large, metabolism is vigorous, to the removal speed of COD, and becomes a kind of Novel sewage treatment process of developing in recent years, there is very large advantage at aspects such as processing load, sludge creation amount, oxygen requirement.Yeast happiness is grown in sugary higher acid aquatic environment, utilize it to process containing compared with the trade effluent of the sanitary sewage of polyose, starch, grease and protein etc. and sugary, grease, monosodium glutamate, Methionin etc., can obtain good effect, show obvious superiority.Wider to the subject range of envrionment temperature because of low temperature-resistant yeasts, under cold condition, there are good growth characteristics, make it be well suited for being used in low-temperature sewage is processed.
Utilize the waste yeast of fermentation industry generation as the starting material of Adsorption of Heavy Metal Ions, can reduce the cost of sewage disposal, reach the object of " treatment of wastes with processes of wastes against one another ".This test relates to a kind of method of waste yeast to heavy metal ions in sewage adsorption rate that improve.At present more common with the dispose of sewage research of middle heavy metal ion of waste yeast, but yeast used is all undressed mostly, the yeast after wine brewing is directly used in the processing to sewage through cleaning, after centrifugal, dry, this primary yeast is lower to heavy metal ions in sewage adsorption rate, the weak effect of disposing of sewage, is reducing the effect of waste yeast in sewage disposal virtually; Meanwhile, in sewage, generally can only not contain a kind of heavy metal ion, Cr
6+, Cu
2+, Pb
2+in sewage, content is all higher, in the time that this undressed waste yeast is used for the multiple heavy metal ion that coexist of sewage to adsorb, owing to there is competitive adsorption between ion, its adsorption rate to heavy metal ions in sewage is further reduced.How to utilize yeast to be applied in absorption sewage heavy metal ion to have important practical significance, all thering is important using value for how utilizing waste yeast to be applied in absorption sewage heavy metal ion simultaneously as seen.
Summary of the invention
Object of the present invention is intended to provide a kind of method of waste yeast to heavy metal ions in sewage adsorption rate that improve, and to eliminate the current above-mentioned shortcoming that is adopted method, makes waste yeast bring into play to greatest extent its effect aspect sewage disposal.
The present invention adopts main technical schemes:
The present invention is by utilizing waste yeast adsorbing heavy metal ions in sewage, by HCl, NaOH or ethanol are processed waste yeast, then through cleaning, collect after centrifugal, dry, then waste yeast after treatment is added in sanitary sewage heavy metal ion is adsorbed.The method can not only improve the adsorption rate to single heavy metal ion in sewage, the absorption of multiple coexisting ions in sewage is also improved simultaneously, and the required cost of the method is low, simple to operate, does not need complicated equipment and instrument.
The present invention specifically provides a kind of method of utilizing waste yeast absorption sewage heavy metal ion, and concrete grammar carries out according to following these steps to.
(1) waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
(2) by waste beer yeast after treatment step a NaOH, HCl or dehydrated alcohol processing for powder, then use deionized water wash 3-5 time, 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens, wherein the concentration of NaOH or HCl is 0.1mol/L, temperature is 30 DEG C, time 2h.
(3) waste yeast powder after treatment step b is joined in sanitary sewage, be mixed with the solution of waste yeast mass concentration 0.5g/L-5g/L, be within the scope of 2-7 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 15-90min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, calculate adsorption rate.
By implementing the concrete summary of the invention of the present invention, can reach following effect.
A kind of method of utilizing waste yeast adsorbing heavy metal ions in sewage of the present invention, the method by waste yeast after HCl, NaOH, Ethanol Treatment, for the heavy metal ion of adsorbing sewage, the present invention has studied under different pH values, time, waste yeast bacterium consumption condition, through the waste yeast of chemically modified to sanitary sewage in Pb
2+, Cr
6+, Cu
2+the adsorptive power of three kinds of ions.Tentatively determined treatment process and optimised process that adsorption effect is best, result is as follows: 30 DEG C of temperature, and pH value 2-7, adsorption time 15-90min, within the scope of inoculum of dry yeast 0.5-5g/L, these three kinds of yeast of processing are to Cr in sanitary sewage
6+, Cu
2+, Pb
2+adsorption rate between 16.59%-76.93%; The waste yeast that utilizes HCl to process is best to heavy metal ions in sewage adsorption effect, to Pb
2+, Cu
2+, Cr
6+adsorption rate be respectively 76.93%, 73.14%, 45.27%.
Brief description of the drawings
Fig. 1 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of pH value of the present invention on HCl processing, wherein-◆-be illustrated in the waste beer yeast of processing through HCl under different pH condition to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through HCl under different pH condition to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through HCl under different pH condition to Cr
6+adsorption rate.
Fig. 2 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of pH value of the present invention on NaOH processing, wherein-◆-be illustrated in the waste beer yeast of processing through NaOH under different pH condition to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through NaOH under different pH condition to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through NaOH under different pH condition to Cr
6+adsorption rate.
Fig. 3 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of pH value of the present invention on Ethanol Treatment, wherein-◆-be illustrated under different pH condition waste beer yeast through Ethanol Treatment to Pb
2+adsorption rate;-■-be illustrated under different pH condition through the waste beer yeast of Ethanol Treatment to Cu
2+adsorption rate;-▲-is illustrated under different pH condition waste beer yeast through Ethanol Treatment to Cr
6+adsorption rate.
Fig. 4 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of time of the present invention on HCl processing, wherein-◆-be illustrated in the waste beer yeast of processing through HCl under different adsorption times to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through HCl under different adsorption times to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through HCl under different adsorption times to Cr
6+adsorption rate.
Fig. 5 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of time of the present invention on NaOH processing, wherein-◆-be illustrated in the waste beer yeast of processing through NaOH under different adsorption times to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through NaOH under different adsorption times to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through NaOH under different adsorption times to Cr
6+adsorption rate.
Fig. 6 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of time of the present invention on Ethanol Treatment, wherein-◆-be illustrated under different adsorption times waste beer yeast through Ethanol Treatment to Pb
2+adsorption rate;-■-be illustrated under different adsorption times through the waste beer yeast of Ethanol Treatment to Cu
2+adsorption rate;-▲-is illustrated under different adsorption times waste beer yeast through Ethanol Treatment to Cr
6+adsorption rate.
Fig. 7 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of inoculum of dry yeast of the present invention on HCl processing, wherein-◆-be illustrated in the waste beer yeast of processing through HCl under different inoculum of dry yeast to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through HCl under different inoculum of dry yeast to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through HCl under different inoculum of dry yeast to Cr
6+adsorption rate.
Fig. 8 is the figure that affects of the waste beer yeast adsorbing heavy metal ions in sewage of inoculum of dry yeast of the present invention on NaOH processing, wherein-◆-be illustrated in the waste beer yeast of processing through NaOH under different inoculum of dry yeast to Pb
2+adsorption rate;-■-be illustrated in the waste beer yeast of processing through NaOH under different inoculum of dry yeast to Cu
2+adsorption rate;-▲-is illustrated in the waste beer yeast of processing through NaOH under different inoculum of dry yeast to Cr
6+adsorption rate.
Fig. 9 is the figure that affects of the waste yeast adsorbing heavy metal ions in sewage of inoculum of dry yeast of the present invention on Ethanol Treatment, wherein-◆-be illustrated under different inoculum of dry yeast waste beer yeast through Ethanol Treatment to Pb
2+adsorption rate;-■-be illustrated under different inoculum of dry yeast through the waste beer yeast of Ethanol Treatment to Cu
2+adsorption rate;-▲-is illustrated under different inoculum of dry yeast waste beer yeast through Ethanol Treatment to Cr
6+adsorption rate.
Embodiment
Materials and methods: bacterial classification adopts discarded Carlsberg-140 yeast of Usu, Xinjiang brew-house, also claims waste beer yeast; Reagent adopts potassium bichromate, diphenylcarbazide, and copper sulfate, cupral ethylenediamine tetraacetic acid (EDTA), ammonium citrate, tetracol phenixin, ammonium chloride, lead nitrate, trichloromethane, dithizone, adopts reagent to be analytical pure.
Plant and instrument: precise electronic balance (the Ao Haosi international trade AR2130/C of (Shanghai) Co., Ltd. type); Electric heating constant-temperature blowing drying box (the permanent scientific and technological DHG-9140A of Instrument Ltd. type in Shanghai one); 722 visible spectrophotometers (2C5Q407136 of Xinmao Instrument Co., Ltd., Shanghai); SHZ-82 type water-bath constant temperature oscillator (Medical Instruments factory of Jintan City of Jiangsu Province); TD5A-WS table-type low-speed whizzer (Shanghai Precision Scientific Apparatus Co., Ltd).
All reagent, instrument, the raw and auxiliary material in the present invention, selected are all well known selecting, but do not limit enforcement of the present invention, and other reagent more well known in the art and equipment are all applicable to the enforcement of the following embodiment of the present invention.
embodiment mono-: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, waste beer yeast powder after treatment step a is processed with NaOH, take 15g waste beer yeast, at 250ml concentration 0.1mol/L, temperature is to process in the NaOH of 30 DEG C, time 2h, uses deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.025g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 0.5g/L (dry mass), be 2 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 15min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.173,0.407,0.486, corresponding adsorption rate is respectively 36.21%, 30.89%, 21.74%.
embodiment bis-: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, waste beer yeast powder after treatment step a is processed with HCl, taken 15g waste beer yeast, at 250ml concentration 0.1mol/L, temperature is to process in the HCl of 30 DEG C, and time 2h, with deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.05g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 1 g/L (dry mass), be 3 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 30 min, filter after absorption, measure respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.164,0.400,0.474, corresponding adsorption rate is respectively 39.46%, 32.13%, 24.80%.
embodiment tri-: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, by waste beer yeast powder dehydrated alcohol processing after treatment step a, take 15g waste beer yeast, in 50ml dehydrated alcohol, process, time 2h, uses deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.1g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 2 g/L (dry mass), be 4 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 60min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.160,0.394,0.467, corresponding adsorption rate is respectively 40.87%, 33.16%, 26.44%.
embodiment tetra-: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, waste beer yeast powder after treatment step a is processed with NaOH, take 15g waste beer yeast, at 250ml concentration 0.1mol/L, temperature is to process in the NaOH of 30 DEG C, time 2h, uses deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.1g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 2g/L (dry mass), be 3 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 45min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.142,0.359,0.451, corresponding adsorption rate is respectively 47.59%, 39.23%, 30.37%.
embodiment five: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, waste beer yeast powder after treatment step a is processed with HCl, taken 15g waste beer yeast, at 250ml concentration 0.1mol/L, temperature is to process in the HCl of 30 DEG C, and time 2h, with deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.25g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 5g/L (dry mass), be 5 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 60 min, filter after absorption, measure respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.145,0.353,0.441, corresponding adsorption rate is respectively 46.68%, 40.33%, 32.72%.
embodiment six: the method for utilizing waste yeast adsorbing heavy metal ions in sewage
A, waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use.
B, by waste beer yeast powder dehydrated alcohol processing after treatment step a, take 15g waste beer yeast, in 50ml dehydrated alcohol, process, time 2h, uses deionized water wash 3-5 time, in 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens.
C, waste yeast powder after treatment 0.1g step b is joined in 50mL sanitary sewage, be mixed with the solution of waste yeast mass concentration 2 g/L (dry mass), be 7 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 90min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, its absorbancy is respectively 0.156,0.374,0.452, corresponding adsorption rate is respectively 42.41%, 36.53%, 30.12%.
Above-described embodiment one to embodiment six is measured respectively to heavy metal ion Cr in filtrate according to a conventional method
6+, Cu
2+, Pb
2+absorbancy, calculate adsorption rate.
Cr
6+mensuration: the chromium ion solution 1ml drawing after absorption moves in 50mL volumetric flask, moves into respectively in 50mL triangular flask, then add 2.5mL developer after constant volume in triangular flask, mix rear standing 10min, move in 1cm quartz colorimetric utensil, in 540nm wavelength place colorimetric, survey absorbancy.
Cu
2+mensuration: draw filtrate 50mL, add 10mL ethylenediamine tetraacetic acid (EDTA)-ammonium citrate solution, 50mL ammonium chloride-ammonium hydroxide buffered soln, shakes up, add 0.02% cupral solution 5mL, shake up, leave standstill 5min, add 10mL tetrachloromethane, use forced oscillation 2min, after stratification, tetrachloromethane layer is filtered in 1cm cuvette through absorbent cotton, makes reference with tetrachloromethane, and in wavelength, 440 nm places record absorbancy.
Pb
2+mensuration: draw 20mL filtrate in 125 mL separating funnels, add 2 phenol red indicator, be adjusted to redness with 1: 1 ammoniacal liquor, add 10.0 mL dithizones and use liquid, use forced oscillation 2min, after stratification, trichloromethane layer is filtered in 1 cm cuvette through absorbent cotton, regulates zero point with trichloromethane, and in wavelength, 510 nm places record absorbancy.
Results and analysis.
Can be found out by accompanying drawing 1,2,3: be 3 o'clock in pH value, the waste yeast of crossing through HCl, NaOH, Ethanol Treatment all reaches maximum to the adsorption rate of three kinds of ions, to Pb
2+adsorption rate be 71.52%, to Cu
2+adsorption rate be 68.51%, to Cr
6+adsorption rate be 42.54%.
Can be found out by accompanying drawing 4,5,6: the waste beer yeast of crossing through HCl, NaOH, Ethanol Treatment reaches maximum when the time 60min to the adsorption rate of three kinds of ions, to Pb
2, Cu
2+, Cr
6+adsorption rate be respectively 72.38%, 60.37%, 44.72%.
Can be found out by accompanying drawing 7,8,9: the waste yeast of crossing through HCl, NaOH, Ethanol Treatment is to Pb
2+, Cu
2+adsorption rate maximum in the time that inoculum of dry yeast is 2g/L, to Pb
2, Cu
2+, Cr
6+adsorption rate be respectively 73.28%, 71.02%, 47.49%.
Therefore, adopt the method for utilizing waste yeast adsorbing heavy metal ions in sewage provided by the invention, 30 DEG C of temperature, pH value 2-7, adsorption time 15-90min, within the scope of inoculum of dry yeast 0.5-5g/L, these three kinds of yeast of processing are to Cr in sanitary sewage
6+, Cu
2+, Pb
2+adsorption rate between 16.59%-76.93%; The waste yeast that utilizes HCl to process is best to heavy metal ions in sewage adsorption effect, to Pb
2+, Cu
2+, Cr
6+adsorption rate be respectively 76.93%, 73.14%, 45.27%.
Claims (1)
1. a method of utilizing waste yeast absorption sewage heavy metal ion, is characterized in that, the concrete steps of method are as follows:
(1) waste beer yeast: by deionized water wash 2-3 time for waste yeast after brewing beer, then collect thalline after the centrifugal 10min of 3500r/min, 80 DEG C of oven dry of temperature, grind to form fine powder after cooling, and kept dry is for subsequent use;
(2) by waste beer yeast after treatment step a NaOH, HCl or dehydrated alcohol processing for powder, then use deionized water wash 3-5 time, 80 DEG C of oven dry of temperature, grind, collect the yeast filtering through 80 eye mesh screens, wherein the concentration of NaOH or HCl is 0.1mol/L, temperature is 30 DEG C, time 2h;
(3) waste yeast powder after treatment step b is joined in sanitary sewage, be mixed with the solution of waste yeast mass concentration 0.5g/L-5g/L, be within the scope of 2-7 at pH, 30 DEG C of temperature, rotating speed is under 120 r/min conditions, vibration absorption 15-90min, filters after absorption, measures respectively according to a conventional method heavy metal ion Cr in filtrate
6+, Cu
2+, Pb
2+absorbancy, calculate adsorption rate.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597067A (en) * | 2017-10-10 | 2018-01-19 | 孙祎 | A kind of preparation method for the treatment of of dyeing/printing wastewaters |
| CN107879485A (en) * | 2017-12-13 | 2018-04-06 | 合肥郑国生物科技有限公司 | A kind of biological adsorption recovery method of heavy metals in industrial wastewater |
| CN108031445A (en) * | 2017-12-13 | 2018-05-15 | 合肥郑国生物科技有限公司 | A kind of preparation method and application method of the Pichia kudriavezii adsorbent of quick adsorption heavy metal |
| CN108244460A (en) * | 2018-01-31 | 2018-07-06 | 淄博职业学院 | It is a kind of to improve method of the saccharomyces cerevisiae to Metal Ions in Foodstuffs adsorption capacity |
| CN109306310A (en) * | 2018-10-31 | 2019-02-05 | 广西德保新贝侬酒厂有限公司 | A kind of filtering technique of health liquor |
-
2014
- 2014-04-01 CN CN201410128100.2A patent/CN103848474A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597067A (en) * | 2017-10-10 | 2018-01-19 | 孙祎 | A kind of preparation method for the treatment of of dyeing/printing wastewaters |
| CN107879485A (en) * | 2017-12-13 | 2018-04-06 | 合肥郑国生物科技有限公司 | A kind of biological adsorption recovery method of heavy metals in industrial wastewater |
| CN108031445A (en) * | 2017-12-13 | 2018-05-15 | 合肥郑国生物科技有限公司 | A kind of preparation method and application method of the Pichia kudriavezii adsorbent of quick adsorption heavy metal |
| CN108244460A (en) * | 2018-01-31 | 2018-07-06 | 淄博职业学院 | It is a kind of to improve method of the saccharomyces cerevisiae to Metal Ions in Foodstuffs adsorption capacity |
| CN109306310A (en) * | 2018-10-31 | 2019-02-05 | 广西德保新贝侬酒厂有限公司 | A kind of filtering technique of health liquor |
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Application publication date: 20140611 |