CN104549154A - Preparation method of biological activated carbon capable of safely adsorbing cadmium in water - Google Patents
Preparation method of biological activated carbon capable of safely adsorbing cadmium in water Download PDFInfo
- Publication number
- CN104549154A CN104549154A CN201510033721.7A CN201510033721A CN104549154A CN 104549154 A CN104549154 A CN 104549154A CN 201510033721 A CN201510033721 A CN 201510033721A CN 104549154 A CN104549154 A CN 104549154A
- Authority
- CN
- China
- Prior art keywords
- preparation
- cadmium
- water
- activated carbon
- biomass carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a preparation method of biological activated carbon capable of safely adsorbing cadmium in water. The preparation method of the biological activated carbon capable of safely adsorbing cadmium in the water comprises the following steps: 1) removing impurities from harvested napiergrass, carrying out air drying, and then sequentially smashing and drying; 2) putting smashed and dried napiergrass into a carbonization furnace, heating to 480-520 DEG C at a rate of 4-6 DEG C/min, and carrying out oxygen-free carbonization reaction for 1.8-2.2 hours while heat preservation is carried out; and 3) cooling the carbonized napiergrass obtained in the step 2) to room temperature, smashing, and sieving, so that the biological activated carbon capable of safely adsorbing cadmium in the water is obtained. The preparation method of the biological activated carbon capable of safely adsorbing cadmium in the water has the advantages that the three problems that the adsorption efficiency is low, secondary pollution can be easily caused and cost is high when the existing adsorption technology is used for treating heavy metal wastewater are solved; meanwhile, carbon in plant waste is stably stored, carbon dioxide release is reduced, and obvious ecological benefit is realized.
Description
Technical field
The present invention relates to a kind of preparation of biological carbon materials, belong to technical field of biomass resource utilization.In particular to biological carbon materials and the preparation method of cadmium in the safe adsorbed water body of a kind of energy.
Background technology
Along with developing rapidly of current industrial and agricultural production, heavy metal enters water body by the number of ways such as use and house refuse of mining, metal smelt, chemical production wastewater and agriculture chemical, causes the heavy metal pollution of water body be on the rise.In addition, heavy metal pollution also has the features such as disguise, chronicity and irreversibility, and enters human body by food chain thus the life and health of harm humans, this social concern making heavy metal pollution of water body become urgently to be resolved hurrily.Wherein, cadmium pollution is subject to showing great attention to of people after Japan's " Itai-itai diseases " event.At present, the administration way that Heavy Metals in Waters pollutes mainly contains chemical precipitation method, ion-exchange resin, hyperfiltration, membrane separation process and absorption method etc.Wherein absorption method is used widely because of advantages such as it are efficient, cheap and be easy to operation and environmental perturbation is little.
Charcoal is a kind of stable height aromatization that produced through high temperature pyrolysis under anoxic conditions by living beings and is rich in the solid matter of carbon element, because having well-developed pore structure and larger specific area, in addition raw materials wide material sources and with low cost, become a kind of novel absorption material and are subject to extensive concern at environmental area.
At present, the heavy metal absorbent adopted in water treatment is acticarbon and organically-modified material mainly.And the current active carbon being used as adsorbent is obtain higher specific area many employings chemical activation method, and need after activation repeatedly to clean with acid, not only technique is loaded down with trivial details, cost is higher but also can cause certain secondary pollution to environment.It take Chinese medicine slag as the heavy metal adsorption method for preparation of active carbon of raw material that CN 103949214A discloses a kind of, adsorbent prepared by the method is through high temperature carbonization and steam activation after being classified by rhizome mass of residue percentage composition by Chinese medicine slag, again mixing after and hydrogen peroxide carry out oxidation reaction, then carry out modification through methacrylic acid and utilize crosslinking agent to solidify, finally drying, pulverize preparation and obtain.Technique is comparatively loaded down with trivial details, and a large amount of organic reagent of preparation process consumption, considerably increase production cost, and have certain harm to environment.CN 104150480A discloses a kind of preparation method of Adsorption of Heavy Metals activated carbon with high specific surface area, the method by dry for biomass material, be crushed to 60 ~ 100 orders after put into microwave reactor, pass into N
2, control microwave power is 1000W ~ 2000W, carburizing temperature 300 ~ 500 DEG C carries out microwave carbonization; After microwave carbonization, be cooled to room temperature and obtain carbonized material, get carbonized material more even than ground and mixed by the quality of 1:1 ~ 10 with organic alkoxide activator after, putting into atmosphere furnace with ramp to 800 ~ 1000 of 5 ~ 50 DEG C/min DEG C is incubated 100 ~ 300min, be cooled to room temperature to take out, after salt pickling, then be washed to neutrality, drying, obtains active carbon.This preparation method is complex process equally, and cost is high, is unsuitable for spread.In addition, although the active carbon of chemical modification can apply to Industrial Waste Water Treatments heavy metal, the absorption of the drinking water heavy metal at the place such as Drinking w ater, reservoir upstream can not be applied to, easily cause secondary pollution.
Therefore, a kind of environmental protection, heavy metal efficient and the with low cost and adsorbent that Cadmium In The Water Body has a good adsorption properties is seemed particularly important how is prepared.
Summary of the invention
The technical problem to be solved in the present invention is to provide the preparation method of the charcoal of cadmium in the safe adsorbed water body of a kind of energy.Instant invention overcomes existing adsorption technology administer adsorption efficiency in heavy metal containing sewage process not high, easily cause secondary pollution and cost this three large problem higher.
In order to solve the problems of the technologies described above, the invention provides the preparation method of the biomass carbon of cadmium in the safe adsorbed water body of a kind of energy, comprising the following steps:
1), by air-dry after harvested napier grass removal of impurities, then carry out successively pulverizing, drying;
2), pulverize the napier grass after drying and put into retort, then oxygen barrier carbonization reaction is carried out, insulation reaction 1.8 ~ 2.2h (being preferably 2h) with ramp to 480 ~ 520 of 4 ~ 6 DEG C/min (being preferably 5 DEG C/min) DEG C (being preferably 500 DEG C);
3), by step 2) napier grass is cooled to room temperature after the charing of gained, pulverizes and sieves, and obtains the biomass carbon biomass carbon of cadmium (can in safe adsorbed water body).
Improvement as the preparation method of biomass carbon of the present invention:
Step 2) in, in the process of oxygen barrier carbonization reaction, pass into nitrogen make the pressure in charing furnace chamber maintain 0.04 ~ 0.06MPa (being preferably 0.05Mpa).
Further improvement as the preparation method of biomass carbon of the present invention:
Step 1) in,
Napier grass water content after air-dry is 10% ~ 20% (quality %);
Be crushed to particle diameter≤10mm;
2.5 ~ 3h is dried in 90 ~ 105 DEG C.
Further improvement as the preparation method of biomass carbon of the present invention:
Described step 3) in the aperture that pulverizes and sieves be 60 ~ 100 orders.
The purposes of the biomass carbon that the present invention also provides said method preparation simultaneously and obtains: as Heavy Metals in Waters cadmium adsorbent.
Remarks illustrate:
Step 1) air-dry time be about one week.
Step 2) in, retort such as can select moveable box resistance atmosphere protection stove.
Napier grass (Pennisetum purpureum Schum), another name: napier-grass, grass family, the perennial large-scale herbaceous plant that grows thickly of broomcorn millet race.Originate in Africa, to introduce after China as a kind of water remediation plant extensive growth in nature and artificial swamp.Harvested napier grass generally does waste treatment, does not have practical value.
The present invention is relative to above-mentioned prior art technical advantage specific as follows:
What 1, documents adopted is microwave charring, high to the requirement of equipment; And the present invention is under the process conditions set by the present invention, only need conventional retort;
But 2, documents complex operation step and consume the removal efficiency that mass energy adds cost heavy metal and can not have very large lifting, and the heavy metal adsorption of drinking water source can not be used for owing to the addition of organic alkoxide; And the present invention is under the process conditions set by the present invention, cadmium in highly effective and safe adsorbed water body can be ensured, turn avoid the use of organic alkoxide.
Relative to the technology of preparing of existing adsorbent for heavy metal, beneficial effect of the present invention is:
(1) the invention solves the problem of body eutrophication rehabilitation plant offal treatment, turn waste into wealth, discarded object is made charcoal and utilizes further, effectively prevent secondary pollution.
(2) the present invention not only solves the problem that may produce secondary pollution in active carbon purifying water body in the past, and material is easy to get, and manufacture craft is succinct, low production cost.
(3) heavy metal absorbent for preparing of the present invention is large to Heavy Metals in Waters adsorbance, and removal efficiency is very high; Its to removal efficiency of heavy metals in drinking water source small watershed more than 97%; Therefore there is higher Social and economic benef@.
In sum, the biomass carbon that the present invention utilizes napier grass discarded object to prepare and obtains, directly can apply to water body purification and remove in the process of cadmium.Instant invention overcomes existing adsorption technology administer adsorption efficiency in heavy metal containing sewage process not high, easily cause secondary pollution and cost this three large problem higher; Carry out stablizing sealing up for safekeeping to carbon element in plant refuse simultaneously, decreased CO2 emission, there are significant ecological benefits.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the electron-microscope scanning figure of napier grass charcoal (biomass carbon) prepared by the present invention.
Fig. 2 be the present invention prepare napier grass charcoal absorption cadmium after electron-microscope scanning figure.
Fig. 3 be the present invention prepare napier grass charcoal absorption cadmium before and after infrared spectrogram.
Fig. 4 is the energy spectrogram of napier grass charcoal prepared by the present invention.
Fig. 5 be after the napier grass charcoal absorption cadmium prepared of the present invention can spectrogram.
Fig. 6 is that the charcoal that the present invention utilizes napier grass and other water remediation plant to prepare compares water body cadmium adsorption efficiency.
Remarks illustrate: what in above-mentioned figure, " absorption cadmium after " was corresponding is as the cadmium nitrate solution of testing as described in 3 be 100mg/L time.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but is necessary to point out that following embodiment is only for illustration of the present invention, but be not construed as limiting the invention.
The preparation method of embodiment 1, biomass carbon, carries out following steps successively:
Under harvested napier grass being placed in ventilated environment, natural air drying is after one week (now, moisture content is 12%), and chopping, wears into the powder of particle diameter≤10mm, then puts into baking oven in 105 DEG C of oven dry 3h; Then put into retort, pass into nitrogen, and carry out oxygen barrier carbonization reaction with the ramp to 500 of 5 DEG C/min DEG C, in the process of oxygen barrier carbonization reaction, pass into nitrogen make the pressure in charing furnace chamber maintain 0.05Mpa; Insulation reaction 2h; Granular gains were pulverized 60-100 mesh sieve by then cool to room temperature, obtained pulverous biomass carbon (hereinafter referred to as biomass charcoal powder).
Biomass charcoal powder (BC500) yield that the present embodiment obtains is 38.72%, and its specific area is 43.36m
2/ g, pore volume is 0.0241cc/g, and aperture is 1.688nm, and micropore is grown completely, and porosity is better; Its pH is 10.1, can be used as acid soil improving agent; Its content of ashes is 35.25%, cation exchange capacity (CEC) is 39.21cmol/kg, K content is 77.86mg/kg, can as soil additive, and the content of beary metal such as Cd, Pb almost do not have, can not produce water body and pollute, less to environmental hazard, the absorption of heavy metal in polluted water body can be further used for.
Adsorption effect is for the following experiment of cadmium in charcoal product adsorbed water body.
Experiment 1,
Charcoal sample (BC500) obtained by above-described embodiment 1 is carried out adsorption test, comprise the following steps: take charcoal sample (BC500) 0.05g in 100mL conical flask, add the cadmium nitrate solution 50mL containing cadmium 20mg/L, three repetitions are set, then conical flask is sealed 25 DEG C of vibration 24h on the constant-temperature table being placed in 160r/min, supernatant is pipetted finally by membrane filtration, utilize ICP-MS to measure in equilibrium liquid and remain cadmium concentration, analytical calculation is carried out to its adsorbance.By analysis, obtain equilibrium concentration and the adsorbance of cadmium, charcoal adsorbent is 19.2mg/g to the maximal absorptive capacity of cadmium, and removal efficiency is 98%.
Test 2, make the concentration of the cadmium nitrate solution in experiment 1 into 50mg/L by 20mg/L, all the other are equal to experiment 1.Charcoal adsorbent is 49.2mg/g to the maximal absorptive capacity of cadmium, and removal efficiency is 98.4%.
Test 3, make the concentration of the cadmium nitrate solution in experiment 1 into 100mg/L by 20mg/L, all the other are equal to experiment 1.Charcoal adsorbent is 97.4mg/g to the maximal absorptive capacity of cadmium, and removal efficiency is 97.4%.
Comparative example 1,
Under harvested napier grass being placed in ventilated environment, natural air drying is after one week, then proceeds as follows described in CN 104150480A:
Put into microwave reactor after being crushed to 60 ~ 100 orders, pass into N
2(pressure controlled in microwave reactor is 0.05MPa), control microwave power is 2000W, carburizing temperature 500 DEG C carries out microwave carbonization, and the time is 2 hours; After microwave carbonization, be cooled to room temperature, obtain carbonized material.
Comparative example 2, " biomass charcoal powder " of embodiment 1 gained is more even than ground and mixed as the quality of pressing 1:5 described in CN 104150480A with organic alkoxide activator after, putting into atmosphere furnace with the ramp to 1000 of 25 DEG C/min DEG C is incubated 300min, be cooled to room temperature to take out, after salt pickling, be washed to neutrality again, drying, obtains active carbon.
Comparative example 3, " the wearing into the powder that particle diameter is less than 10mm after air-dry " in embodiment 1 to be made into " air-dry rear directly wearing into can cross 60-100 mesh sieve ", and corresponding " granular gains were pulverized 60-100 mesh sieve " of cancelling end place; All the other contents are equal to embodiment 1.
Comparative example 4, by raw materials used in above-described embodiment 1--napier grass changes that mullet grass, again power are colored, parasol is careless respectively into, Scirpus tabernaemontani, green reed, vetiver and this seven Plants of water hyacinth, all the other contents are equal to embodiment 1.
Detected according to the described method of above-mentioned experiment 3 (cadmium initial concentration is 100mg/L) by above-mentioned comparative example 1-4 gains, acquired results is as shown in table 1 and Fig. 6.
Table 1
| Maximal absorptive capacity (mg/g) | Removal efficiency | |
| Comparative example 1 | 83.8 | 83.8％ |
| Comparative example 2 | 91.7 | 91.7％ |
| Comparative example 3 | 94.4 | 94.4％ |
Finally, it is also to be noted that what enumerate above is only several specific embodiments of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be had.All distortion that those of ordinary skill in the art can directly derive from content disclosed by the invention or associate, all should think protection scope of the present invention.
Claims (5)
1. can the preparation method of the biomass carbon of cadmium in safe adsorbed water body, it is characterized in that comprising the following steps:
1), by air-dry after harvested napier grass removal of impurities, then carry out successively pulverizing, drying;
2), pulverize dry after napier grass put into retort, then carry out oxygen barrier carbonization reaction with ramp to 480 ~ 520 of 4 ~ 6 DEG C/min DEG C, insulation reaction 1.8 ~ 2.2h;
3), by step 2) napier grass is cooled to room temperature after the charing of gained, and pulverize and sieve, obtain biomass carbon.
2. the preparation method of biomass carbon according to claim 1, is characterized in that:
Described step 2) in, in the process of oxygen barrier carbonization reaction, pass into nitrogen make the pressure in charing furnace chamber maintain 0.04 ~ 0.06MPa.
3. the preparation method of biomass carbon according to claim 1 and 2, is characterized in that:
Described step 1) in,
Napier grass water content after air-dry is 10% ~ 20%;
Be crushed to particle diameter≤10mm;
2.5 ~ 3h is dried in 90 ~ 105 DEG C.
4. the preparation method of biomass carbon according to claim 3, is characterized in that:
Described step 3) in the aperture that pulverizes and sieves be 60 ~ 100 orders.
5. method preparation as described in as arbitrary in Claims 1 to 4 and the purposes of biomass carbon that obtains, is characterized in that: as Heavy Metals in Waters cadmium adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033721.7A CN104549154B (en) | 2015-01-23 | 2015-01-23 | The preparation method of the charcoal of cadmium in the safe adsorbed water body of energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510033721.7A CN104549154B (en) | 2015-01-23 | 2015-01-23 | The preparation method of the charcoal of cadmium in the safe adsorbed water body of energy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104549154A true CN104549154A (en) | 2015-04-29 |
| CN104549154B CN104549154B (en) | 2017-07-07 |
Family
ID=53066862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510033721.7A Active CN104549154B (en) | 2015-01-23 | 2015-01-23 | The preparation method of the charcoal of cadmium in the safe adsorbed water body of energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104549154B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923153A (en) * | 2015-05-07 | 2015-09-23 | 浙江大学 | Preparation method for Canna biological carbon capable of simultaneously adsorbing ammonia nitrogen and cadmium |
| CN105126754A (en) * | 2015-09-02 | 2015-12-09 | 上海大学 | Method for removing chromium in water through biochar through corn straw |
| CN106693895A (en) * | 2017-01-17 | 2017-05-24 | 上海理工大学 | Process utilizing low-quality carbon to treat brown coal upgrading wastewater |
| CN106902738A (en) * | 2017-03-10 | 2017-06-30 | 扬州大学 | A kind of wooden sub- shell base ecological restoration material and its application |
| CN107081129A (en) * | 2017-04-28 | 2017-08-22 | 广州大学 | A kind of charcoal and preparation method and application |
| CN107321305A (en) * | 2017-06-29 | 2017-11-07 | 湖南农业大学 | The preparation method of southern reed base modification biological charcoal and southern reed base modification biological charcoal and application |
| CN107721748A (en) * | 2017-11-14 | 2018-02-23 | 湖南农业大学 | Utilize CO in the fixed air of carbon remittance grass2Method, carbon converge turf base drop cadmium soil conditioner and preparation method and application |
| CN108686622A (en) * | 2018-08-24 | 2018-10-23 | 合肥德博生物能源科技有限公司 | The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation |
| CN113070026A (en) * | 2021-03-04 | 2021-07-06 | 浙江工业大学 | Preparation method and application of KOH-modified sedum alfredii hydrothermal carbon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306813A (en) * | 2008-07-04 | 2008-11-19 | 南京大学 | Method for preparing smooth cord-grass active carbon for treating cadmium-containing waste water |
| CN103601182A (en) * | 2013-10-18 | 2014-02-26 | 安徽师范大学 | Preparation method of straw anaerobic fermentation residue active carbon for processing cadmium-containing waste water |
| CN104138745A (en) * | 2014-08-19 | 2014-11-12 | 中国科学院生态环境研究中心 | Preparation method of biological carbon adsorbent for repairing organic pollution |
-
2015
- 2015-01-23 CN CN201510033721.7A patent/CN104549154B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306813A (en) * | 2008-07-04 | 2008-11-19 | 南京大学 | Method for preparing smooth cord-grass active carbon for treating cadmium-containing waste water |
| CN103601182A (en) * | 2013-10-18 | 2014-02-26 | 安徽师范大学 | Preparation method of straw anaerobic fermentation residue active carbon for processing cadmium-containing waste water |
| CN104138745A (en) * | 2014-08-19 | 2014-11-12 | 中国科学院生态环境研究中心 | Preparation method of biological carbon adsorbent for repairing organic pollution |
Non-Patent Citations (2)
| Title |
|---|
| FA YUAN WANG ET AL.: "Adsorption of cadmium (II) ions from aqueous solution by a new low-cost adsorbent—Bamboo charcoal", 《JOURNAL OF HAZARDOUS MATERIALS》 * |
| 李力等: "玉米秸秆生物炭对Cd（Ⅱ）的吸附机理研究", 《农业环境科学学报》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923153A (en) * | 2015-05-07 | 2015-09-23 | 浙江大学 | Preparation method for Canna biological carbon capable of simultaneously adsorbing ammonia nitrogen and cadmium |
| WO2016176906A1 (en) * | 2015-05-07 | 2016-11-10 | 浙江大学 | Method for producing canna indica biochar capable of adsorbing ammonia nitrogen and cadmium simultaneously |
| CN105126754A (en) * | 2015-09-02 | 2015-12-09 | 上海大学 | Method for removing chromium in water through biochar through corn straw |
| CN106693895B (en) * | 2017-01-17 | 2019-03-22 | 上海理工大学 | A kind of technique using low-quality charcoal processing lignite upgrading waste water |
| CN106693895A (en) * | 2017-01-17 | 2017-05-24 | 上海理工大学 | Process utilizing low-quality carbon to treat brown coal upgrading wastewater |
| CN106902738A (en) * | 2017-03-10 | 2017-06-30 | 扬州大学 | A kind of wooden sub- shell base ecological restoration material and its application |
| CN107081129A (en) * | 2017-04-28 | 2017-08-22 | 广州大学 | A kind of charcoal and preparation method and application |
| CN107321305A (en) * | 2017-06-29 | 2017-11-07 | 湖南农业大学 | The preparation method of southern reed base modification biological charcoal and southern reed base modification biological charcoal and application |
| CN107721748A (en) * | 2017-11-14 | 2018-02-23 | 湖南农业大学 | Utilize CO in the fixed air of carbon remittance grass2Method, carbon converge turf base drop cadmium soil conditioner and preparation method and application |
| CN107721748B (en) * | 2017-11-14 | 2021-05-14 | 湖南农业大学 | Fixation of CO in air by using carbon sink grass2Method, carbon-sink grass carbon-based cadmium-reducing soil conditioner and preparation method and application thereof |
| CN108686622A (en) * | 2018-08-24 | 2018-10-23 | 合肥德博生物能源科技有限公司 | The preparation facilities and preparation method of a kind of modified biomass charcoal for soil remediation |
| CN113070026A (en) * | 2021-03-04 | 2021-07-06 | 浙江工业大学 | Preparation method and application of KOH-modified sedum alfredii hydrothermal carbon |
| CN113070026B (en) * | 2021-03-04 | 2022-07-01 | 浙江工业大学 | Preparation method and application of KOH-modified sedum alfredii hydrothermal carbon |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104549154B (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104549154B (en) | The preparation method of the charcoal of cadmium in the safe adsorbed water body of energy | |
| Wang et al. | Co-pyrolysis of sewage sludge and organic fractions of municipal solid waste: Synergistic effects on biochar properties and the environmental risk of heavy metals | |
| CN104923153A (en) | Preparation method for Canna biological carbon capable of simultaneously adsorbing ammonia nitrogen and cadmium | |
| Zhang et al. | Effects of pyrolysis temperature on biochar’s characteristics and speciation and environmental risks of heavy metals in sewage sludge biochars | |
| CN106076335B (en) | A kind of preparation method and application of heterogeneous Fenton catalyst | |
| CN110586036A (en) | Preparation method of composite modified biochar | |
| CN110813239A (en) | Preparation method of biochar-loaded lanthanum-doped iron oxide | |
| CN110586030B (en) | Preparation method of modified charcoal capable of adsorbing and fixing cadmium and copper in soil by cyclic utilization of heat | |
| CN105126754A (en) | Method for removing chromium in water through biochar through corn straw | |
| Olaoye et al. | Adsorption of selected metals from cassava processing wastewater using cow-bone ash | |
| CN102600799A (en) | Method for treating wasterwater containing copper by utilizing Spartina alterniflora Loisel-based biochar | |
| CN109336082B (en) | Straw treatment method, biochar and preparation method and application thereof | |
| CN104087323A (en) | Method for preparing biochar by utilizing edible fungi waste materials and application of biochar | |
| CN103480330B (en) | Biomass-modified adsorbent for adsorbing coking wastewater, and preparation method and application thereof | |
| CN104138745A (en) | Preparation method of biological carbon adsorbent for repairing organic pollution | |
| CN110523379A (en) | A kind of low cost preparation method of porous charcoal | |
| CN106732358A (en) | A kind of biomass carbonization microballoon for loading iron oxide and its preparation and application | |
| CN102992319A (en) | Efficient and safe preparation method for active carbon material for adsorbing phosphorus in water body | |
| CN109173999A (en) | A kind of preparation method and applications of biology carbon microspheres | |
| CN105502390A (en) | Method for preparing activated carbon from rice husks and sludge in sewage plant | |
| CN107626280A (en) | Charcoal base heavy metal absorbent, preparation method and applications | |
| CN107963628B (en) | Preparation of walnut shell activated carbon and method for adsorbing and recovering eluent in phenanthrene-polluted soil eluent by using walnut shell activated carbon | |
| CN110653246A (en) | Method for removing composite pollution of heavy metal Cd and polycyclic aromatic hydrocarbon in soil | |
| CN108975327A (en) | A method of preparing active carbon | |
| CN106881349B (en) | Preparation and use methods of PCBs contaminated soil in-situ remediation agent based on waste biomass |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |