CN110813206A - Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus - Google Patents
Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus Download PDFInfo
- Publication number
- CN110813206A CN110813206A CN201910982385.9A CN201910982385A CN110813206A CN 110813206 A CN110813206 A CN 110813206A CN 201910982385 A CN201910982385 A CN 201910982385A CN 110813206 A CN110813206 A CN 110813206A
- Authority
- CN
- China
- Prior art keywords
- ions
- eucalyptus
- fast
- pieces
- magnesium
- 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.)
- Pending
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
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2200/00—Components of fuel compositions
- C10L2200/04—Organic compounds
- C10L2200/0461—Fractions defined by their origin
- C10L2200/0469—Renewables or materials of biological origin
- C10L2200/0476—Biodiesel, i.e. defined lower alkyl esters of fatty acids first generation biodiesel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus, which comprises the steps of peeling the fast-growing eucalyptus, cutting the peeled fast-growing eucalyptus into eucalyptus pieces with the length of 10-15mm, the thickness of 3-5mm and the width of no more than 10mm, air-drying, sealing and storing, adding ultrapure water after balancing moisture, adjusting the pH value of the mixed material to be 3-9, reacting for 10-90min at the temperature of 140 plus materials and 180 ℃, and separating eucalyptus pieces and reaction liquid after the reaction is finished to obtain the eucalyptus pieces with the potassium ions, the calcium ions and the magnesium ions removed. In the research process, the inventor creatively discovers that the hydrothermal pretreatment also has the effect of removing metal ions in the eucalyptus, so that the potassium, calcium and magnesium elements in the fast-growing eucalyptus are efficiently removed by utilizing the green and environment-friendly hydrothermal pretreatment process, the subsequent wood fiber pyrolysis reaction is facilitated, the high-value utilization of the wood fiber is realized, and a new thought is provided for controlling the chemical components of the obtained biological oil.
Description
Technical Field
The invention relates to the field of high-value utilization of wood fibers, in particular to a method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus.
Background
The wood biomass is the most abundant organic resource on the earth, and the development of chemical energy of the wood biomass is crucial to the sustainable development of the world economy. This research is currently receiving a lot of attention, and fast pyrolysis has become one of the most promising methods for obtaining bio-oil. Mineral elements are an important component of woody biomass materials and metallic elements are known to catalyze pyrolysis reactions and significantly alter the pyrolysis product composition, including the chemical composition of the bio-oil produced. With the growing interest in using bio-oils as renewable energy sources, it is of particular importance to understand the chemical components of bio-oils and to adjust the reaction pathways of the desired components.
The presence of metallic elements in lignocellulosic feedstocks has a significant impact on the chemical morphology of the products obtained from the fast pyrolysis reaction. A small amount of metal elements such as potassium, sodium, calcium, magnesium and the like exist in the biomass, and the metal elements play an important catalytic role in the pyrolysis process of the biomass. However, as the pyrolysis temperature increases, calcium ions and magnesium ions affect the pyrolysis speed. If a large part of potassium ions, calcium ions, magnesium ions, etc. can be removed in the pretreatment of the lignocellulosic feedstock and a metal catalyst is reused in the subsequent pyrolysis reaction, the chemical composition of the bio-oil produced can be controlled.
The fast-growing eucalyptus is an excellent energy tree species, is easy to manage, low in maintenance cost and easy to reproduce, and the energy utilization mode of the fast-growing eucalyptus mainly comprises the following steps: eucalyptus oil, biodiesel. Soil in most areas of fast-growing eucalyptus growing areas is mainly acidic, the content levels of hydrogen ions, alkaline metal ions and the like are high, and trees absorb more alkaline metal ions, so that if the fast-growing eucalyptus is used for preparing biological oil, the content of alkaline metal ions, such as potassium ions, calcium ions, magnesium ions and the like, of wood of the fast-growing eucalyptus needs to be controlled before pyrolysis. At present, no report related to the removal of wood metal ions before pyrolysis of fast-growing eucalyptus is available.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 10-15mm, thickness of 3-5mm and width of no more than 10mm, air drying, sealing, and storing for balancing water;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adjusting the pH value of the mixed material to 3-9, reacting for 10-90min at the temperature of 140 ℃ and 180 ℃, and separating the eucalyptus pieces and the reaction liquid after the reaction is finished to obtain the eucalyptus pieces from which potassium ions, calcium ions and magnesium ions are removed and the hydrolysate containing the potassium ions, the calcium ions and the magnesium ions.
Preferably, the water content of the eucalyptus pieces after the water balance in the step (1) is 8-15%.
Preferably, in the step (2), 6-8mL of ultrapure water is added per gram of eucalyptus pieces.
Preferably, in the step (2), the pH value of the mixed material is adjusted by using a sodium hydroxide solution with the concentration of 0.1-0.2mol/L or hydrochloric acid with the concentration of 0.1-0.2 mol/L.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the hydrothermal pretreatment of wood is usually used for extracting hemicellulose in woody biomass, and in the research process, the inventor creatively finds that the hydrothermal pretreatment also has the effect of removing metal ions in eucalyptus, so that potassium, calcium and magnesium elements in fast-growing eucalyptus are efficiently removed by utilizing a green and environment-friendly hydrothermal pretreatment process, the subsequent wood fiber pyrolysis reaction is facilitated, and the high-value utilization of lignocellulose is realized.
2. In the research process of the inventor, the larger the pH value of the reaction liquid is, the higher the metal ion removal rate is, but the larger the pH value of the reaction liquid is, the more the physicochemical structure of the eucalyptus wood is affected, such as part of cellulose, hemicellulose and lignin are degraded, and the pyrolysis is adversely affected. Therefore, the pH of the reaction solution needs to be comprehensively considered. The pH value of a reaction material is adjusted to be 3-9 by adopting a sodium hydroxide solution or hydrochloric acid, even under an alkaline condition, hydronium ions and partial acetic acid are generated in the reaction process, the reaction liquid is neutralized, the final reaction liquid is weak in acidity, 3 metal elements exist in the solution in an ion conversion state, and partial potassium, calcium and magnesium elements in eucalyptus wood chips are smoothly removed.
3. The treatment method is simple and efficient, only hot water and sodium hydroxide/hydrochloric acid are used as treatment agents, the price is low, the safety and environmental protection are realized, the energy is saved, the removal rate of potassium ions in the eucalyptus pieces is 51.12-98.72%, the removal rate of calcium ions is 23.28-51.34%, the removal rate of magnesium ions is 36.74-76.30%, the higher the removal rate is, the less the residual metal elements in the eucalyptus are, the subsequent pyrolysis reaction of the eucalyptus pieces is promoted, and a new idea is provided for controlling the chemical components of the obtained biological oil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 10mm, thickness of 3mm and width of 9mm, air drying, sealing, and storing to balance water content to obtain eucalyptus pieces with water content of 8%;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adding 6mL of ultrapure water into each gram of the eucalyptus pieces, adjusting the pH value of the mixed material to be 3 by using hydrochloric acid with the concentration of 0.1mol/L, reacting for 90min at 180 ℃, separating the eucalyptus pieces and reaction liquid after the reaction is finished, and obtaining the eucalyptus pieces of the fast-growing eucalyptus with potassium ions, calcium ions and magnesium ions removed and hydrolysate containing potassium ions, calcium ions and magnesium ions.
Detecting the removal rate of the fast-growing eucalyptus pieces for removing potassium ions, calcium ions and magnesium ions, which comprises the following specific steps:
(a) and (2) putting 0.5g of the eucalyptus pieces with the water balanced in the step (1) into a crucible, continuously burning for 6h at a high temperature of 500 ℃ to obtain ash content of the eucalyptus piece raw material, adding 10mL of 5% dilute nitric acid into the ash content for oxidative degradation, metering the volume into a 200mL volumetric flask after reaction, and filtering the solution through a 0.22 mu m microporous membrane. Analyzing the content of metal ions in a sample by utilizing atomic absorption spectrometry, wherein the specific operating conditions are as follows: the power is 1.0KW, the cooling air flow is 15L/min, the auxiliary air flow is 1.5L/min, the atomizer flow is 0.75L/min, the pump speed is 15/min, the stabilization time is 15s, the delay time is 20s, and the reading time is 15 s; the detection result shows that the content of potassium element in the eucalyptus pieces is 0.35mg/g, the content of calcium element is 1.84mg/g, and the content of magnesium element is 0.26 mg/g;
(b) taking the hydrolysate obtained in the step (2), cooling to room temperature, placing into a high-speed centrifuge for processing for 5min at the rotation speed of 10000rpm, taking supernatant, and filtering through a 0.45-micron microporous filter membrane to obtain clarified liquid;
(c) placing 1mL of the clarified liquid obtained in the step (b) into a digestion tank, adding 2mL of hydrogen peroxide and 5mL of nitric acid, carrying out microwave digestion with the power of 1000w, the climbing time of 10min, the digestion temperature of 220 ℃ and the digestion time of 5 min; after digestion is finished, transferring the liquid in the digestion tank to a 50mL beaker, evaporating the digestion liquid by using a rotary evaporator, collecting about 1mL of residual liquid, metering the volume to a 25mL volumetric flask by using ultrapure water, transferring the liquid in the volumetric flask to the beaker, sucking 5mL of liquid by using a 5mL injector, filtering a sample by using a filter with the aperture of 0.22 mu m, and collecting a digestion liquid sample to be detected;
(d) and (c) taking the digestion solution sample in the step (c), determining the content of potassium ions, calcium ions and magnesium ions in the sample by utilizing atomic absorption spectroscopy, and calculating to obtain the potassium ion removal rate of 98.72%, the calcium ion removal rate of 51.34% and the magnesium ion removal rate of 76.30%.
Example 2
The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 12mm, thickness of 4mm and width of 8.5mm, air drying, sealing, and storing to balance water content to obtain eucalyptus pieces with water content of 10%;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adding 6.5mL of ultrapure water into each gram of the eucalyptus pieces, adjusting the pH value of the mixed material to be 6 by using hydrochloric acid with the concentration of 0.15mol/L, reacting for 40min at 160 ℃, separating the eucalyptus pieces and reaction liquid after the reaction is finished, and obtaining the eucalyptus pieces of the fast-growing eucalyptus with potassium ions, calcium ions and magnesium ions removed and hydrolysate containing potassium ions, calcium ions and magnesium ions.
The removal rate of potassium ions, calcium ions and magnesium ions of the eucalyptus pieces of the example was measured by the detection method of example 1, and the detection results were as follows:
after the water content is balanced, the content of potassium element in the eucalyptus pieces is 0.32mg/g, the content of calcium element is 1.95mg/g, and the content of magnesium element is 0.29 mg/g; the removal rate of potassium ions, the removal rate of calcium ions, and the removal rate of magnesium ions were calculated to be 71.43%, 40.63%, and 50.29%, respectively.
Example 3
The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 15mm, thickness of 5mm and width of 8mm, air drying, sealing, and storing to balance water content to obtain eucalyptus pieces with water content of 12% for use;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adding 7mL of ultrapure water into each gram of the eucalyptus pieces, adjusting the pH value of the mixed material to be 9 by using a sodium hydroxide solution with the concentration of 0.1mol/L, reacting for 10min at the temperature of 140 ℃, and separating the eucalyptus pieces and the reaction liquid after the reaction is finished to obtain the eucalyptus pieces of the fast-growing eucalyptus with potassium ions, calcium ions and magnesium ions removed and a hydrolysate containing the potassium ions, the calcium ions and the magnesium ions.
The removal rate of potassium ions, calcium ions and magnesium ions of the eucalyptus pieces of the example was measured by the detection method of example 1, and the detection results were as follows:
after the water content is balanced, the content of potassium element in the eucalyptus pieces is 0.36mg/g, the content of calcium element is 1.87mg/g, and the content of magnesium element is 0.28 mg/g; the removal rate of potassium ions, calcium ions and magnesium ions was calculated to be 51.12%, 23.28% and 36.74%, respectively.
Example 4
The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 14mm, thickness of 3.5mm and width of 7mm, air drying, sealing, and storing to balance water content to obtain eucalyptus pieces with water content of 14% for use;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adding 7.5mL of ultrapure water into each gram of the eucalyptus pieces, adjusting the pH value of the mixed material to be 8 by using a sodium hydroxide solution with the concentration of 0.14mol/L, reacting for 60min at 155 ℃, separating the eucalyptus pieces and the reaction liquid after the reaction is finished, and obtaining the eucalyptus pieces of the fast-growing eucalyptus with potassium ions, calcium ions and magnesium ions removed and hydrolysate containing potassium ions, calcium ions and magnesium ions.
The removal rate of potassium ions, calcium ions and magnesium ions of the eucalyptus pieces of the example was measured by the detection method of example 1, and the detection results were as follows:
after the water content is balanced, the content of potassium element in the eucalyptus pieces is 0.32mg/g, the content of calcium element is 1.79mg/g, and the content of magnesium element is 0.24 mg/g; the removal rate of potassium ions was 48.56%, the removal rate of calcium ions was 22.37%, and the removal rate of magnesium ions was 32.83% by calculation.
Example 5
The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus comprises the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 13mm, thickness of 4mm and width of 8mm, air drying, sealing, and storing to balance water content to obtain eucalyptus pieces with water content of 15%;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adding 8mL of ultrapure water into each gram of the eucalyptus pieces, adjusting the pH value of the mixed material to 7.5 by using a sodium hydroxide solution with the concentration of 0.2mol/L, reacting for 30min at 170 ℃, separating the eucalyptus pieces and the reaction liquid after the reaction is finished, and obtaining the eucalyptus pieces of the fast-growing eucalyptus with potassium ions, calcium ions and magnesium ions removed and the hydrolysate containing the potassium ions, the calcium ions and the magnesium ions.
The removal rate of potassium ions, calcium ions and magnesium ions of the eucalyptus pieces of the example was measured by the detection method of example 1, and the detection results were as follows:
after the water content is balanced, the content of potassium element in the eucalyptus pieces is 0.35mg/g, the content of calcium element is 1.83mg/g, and the content of magnesium element is 0.25 mg/g; the removal rate of potassium ions, calcium ions and magnesium ions was 46.92%, 20.64% and 29.68%, respectively, as calculated.
According to the metal ion removal rate described in examples 1 to 5, in the hydrothermal pretreatment process, the larger the pH value of the reaction solution is, the higher the metal ion removal rate is, but the larger the pH value of the reaction solution is, the greater the influence on the physicochemical structure of eucalyptus wood is, for example, a part of cellulose, hemicellulose and lignin is degraded, which adversely affects pyrolysis, so that it is necessary to select an appropriate pH value of the reaction solution, when the pH value of the reaction solution is 3 to 9, the better metal ion removal effect is achieved, the destructiveness on cellulose, hemicellulose and lignin in eucalyptus wood is small, the better physicochemical structure can be maintained, and a good wood raw material is provided for the subsequent pyrolysis treatment.
Claims (4)
1. A method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus is characterized by comprising the following steps:
(1) peeling fast-growing eucalyptus, cutting into eucalyptus pieces with length of 10-15mm, thickness of 3-5mm and width of no more than 10mm, air drying, sealing, and storing for balancing water;
(2) adding ultrapure water into the eucalyptus pieces obtained in the step (1), adjusting the pH value of the mixed material to 3-9, reacting for 10-90min at the temperature of 140 ℃ and 180 ℃, and separating the eucalyptus pieces and the reaction liquid after the reaction is finished to obtain the eucalyptus pieces from which potassium ions, calcium ions and magnesium ions are removed and the hydrolysate containing the potassium ions, the calcium ions and the magnesium ions.
2. The method for removing potassium ions, calcium ions and magnesium ions from fast-growing eucalyptus as claimed in claim 1, wherein the water content of the eucalyptus pieces after the water balancing in step (1) is 8-15%.
3. The method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus as claimed in claim 1, wherein in step (2), 6-8mL of ultrapure water is added per gram of eucalyptus pieces.
4. The method for removing potassium ions, calcium ions and magnesium ions from fast-growing eucalyptus globulus as claimed in claim 1, wherein in the step (2), the pH of the mixture is adjusted by using 0.1-0.2mol/L sodium hydroxide solution or 0.1-0.2mol/L hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982385.9A CN110813206A (en) | 2019-10-16 | 2019-10-16 | Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910982385.9A CN110813206A (en) | 2019-10-16 | 2019-10-16 | Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110813206A true CN110813206A (en) | 2020-02-21 |
Family
ID=69549856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910982385.9A Pending CN110813206A (en) | 2019-10-16 | 2019-10-16 | Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110813206A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590383A (en) * | 2012-02-13 | 2012-07-18 | 河北中烟工业有限责任公司 | Method for determining content of potassium, sodium, calcium and magnesium in cigarette paper simultaneously |
| CN104931437A (en) * | 2015-05-28 | 2015-09-23 | 中国林业科学研究院热带林业实验中心 | Method for detecting contents of potassium, calcium and magnesium in plant |
| RU2016101291A (en) * | 2016-01-18 | 2017-07-19 | Лидия Алексеевна Воропанова | METHOD FOR PRODUCING AMMONIA AND CHLORIDE HYDROGEN |
-
2019
- 2019-10-16 CN CN201910982385.9A patent/CN110813206A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590383A (en) * | 2012-02-13 | 2012-07-18 | 河北中烟工业有限责任公司 | Method for determining content of potassium, sodium, calcium and magnesium in cigarette paper simultaneously |
| CN104931437A (en) * | 2015-05-28 | 2015-09-23 | 中国林业科学研究院热带林业实验中心 | Method for detecting contents of potassium, calcium and magnesium in plant |
| RU2016101291A (en) * | 2016-01-18 | 2017-07-19 | Лидия Алексеевна Воропанова | METHOD FOR PRODUCING AMMONIA AND CHLORIDE HYDROGEN |
Non-Patent Citations (1)
| Title |
|---|
| 胡国荣: "生物质水热预处理及其固体产物热解特性研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhu et al. | Structural changes in lignin during integrated process of steam explosion followed by alkaline hydrogen peroxide of Eucommia ulmoides Oliver and its effect on enzymatic hydrolysis | |
| Ge et al. | Effect of hydrothermal pretreatment on the demineralization and thermal degradation behavior of eucalyptus | |
| Wang et al. | Effects of hydrothermal treatment on enhancing enzymatic hydrolysis of rapeseed straw | |
| Yu et al. | Improvement of the enzymatic hydrolysis of furfural residues by pretreatment with combined green liquor and ethanol organosolv | |
| Wunna et al. | Effect of alkali pretreatment on removal of lignin from sugarcane bagasse | |
| Hong et al. | Pretreatment of moso bamboo with dilute phosphoric acid | |
| Trinh et al. | Optimization of ionic liquid pretreatment of mixed softwood by response surface methodology and reutilization of ionic liquid from hydrolysate | |
| Perez-Pimienta et al. | Fractional pretreatment of raw and calcium oxalate-extracted agave bagasse using ionic liquid and alkaline hydrogen peroxide | |
| CN102527348B (en) | Lignin heavy metal ion adsorbent and preparation method thereof | |
| EP3307810A1 (en) | Organosolv process for the extraction of highly pure lignin and products comprising the same | |
| CN113151366B (en) | Method for improving poplar fermentation efficiency by dilute alkali and ethanol pretreatment | |
| CN112480182B (en) | Preparation method of low-molecular-weight lignin and application of low-molecular-weight lignin in preparation of monophenol compounds | |
| EP3587431A1 (en) | Method for preparing levoglucosenone by catalytic pyrolysis of biomass | |
| Zhan et al. | Enhancing the potential production of bioethanol with bamboo by γ-valerolactone/water pretreatment | |
| CN113603899B (en) | Method for pretreating lignocellulose by using Lewis base to assist neutral eutectic solvent | |
| CN103266148B (en) | Preprocessing method capable of effectively improving efficiency of generating fermentable sugar by bamboo cellulose enzyme hydrolysis | |
| Senila et al. | Vine shoots waste–new resources for bioethanol production | |
| Ibrahim et al. | A study on glycerolysis of oil palm empty fruit bunch fiber | |
| CN110813206A (en) | Method for removing potassium ions, calcium ions and magnesium ions in fast-growing eucalyptus | |
| Shi et al. | Direct Saccharification and Fermentation for High Glucose and Ethanol Production from Non‐Detoxified Furfural Residue Without Any Pretreatment | |
| JP5701632B2 (en) | Sugar-containing composition | |
| CN104231098A (en) | Method for preparing xylooligosaccharide from bagasse by ethanol/water pretreatment | |
| Liu et al. | Cellulose isolation from corn stalk treated by alkaline biochars in solvent systems | |
| Bazarnova et al. | Methods of obtaining lignin-carbohydrate compounds from chemically modified plant raw materials | |
| Li et al. | Study on enzymatic saccharification of Suaeda salsa as a new potential feedstock for bio-ethanol production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200221 |
|
| RJ01 | Rejection of invention patent application after publication |