CN110124614A - A kind of coffee slag adsorbent handling industrial textile waste water - Google Patents
A kind of coffee slag adsorbent handling industrial textile waste water Download PDFInfo
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- CN110124614A CN110124614A CN201910422847.1A CN201910422847A CN110124614A CN 110124614 A CN110124614 A CN 110124614A CN 201910422847 A CN201910422847 A CN 201910422847A CN 110124614 A CN110124614 A CN 110124614A
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- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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- 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
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- 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
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- 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
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- 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
- B01J2220/42—Materials comprising a mixture of inorganic materials
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- 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
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
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- 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
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of coffee slag adsorbents for handling industrial textile waste water, be raw material by coffee grounds, Coffee pulp and diatomite, through filter wash, drying (primary carbonization), pyrolysis, carbonization (low-temperature carbonization), wash, precipitate, activate, wash acid (being carbonized three times), dry, moulding is prepared.Coffee grounds is residue after instant coffee extracted residues and coffee brewing.Of the invention is low in cost, and the removal for the coloured waste of textile mills and dye factory provides new approach.
Description
Technical field
The present invention relates to a kind of coffee slag adsorbents for handling industrial textile waste water, belong to field of environment engineering technology.
Background technique
The waste water of textile mills and dyestuff factory discharge is one of the maximum reason for causing aquatic products to pollute.In waste water containing dye processing
In, the dye class of most study is with reactive dye and basic dye.Waste water containing dyestuff is difficult to handle, because these are contaminated
Material is organic molecule difficult to degrade, and light, heat and oxidant are stablized in anti-aerobic sigestion.
Currently, being mainly used for the low cost and unconventional adsorbent (natural material, biological track, industrial or agricultural of dyestuff removal
Waste material) there are clay material (bentonite, kaolinite), zeolite, siliceous material (the micro- stone of silicon, alunite, perlite), agricultural wastes
(bagasse marrow, corncob, rice husk and cocoanut shell), industrial waste (useless carbon slurry and metal hydroxides sludge), biological adsorption agent (shell
Glycan, cocoanut shell and biomass) and other (starch, cyclodextrin and cottons).However, about coffee residues as adsorbent
(being used for metal) lacks Research Literature especially as the possible application problem of dye sorbent.
In general, " coffee residues " are commonly known as the solid waste abandoned from instant coffee production process and come
It is cut from coffee-house coffee.Instant coffee industry experienced lasting development, and instant coffee has become millions of people in the world and drinks
One of most popular coffee.Therefore, a large amount of coffee grounds is produced in world wide, this is with hot water or steam treatment
Ground coffee is to prepare the solid residue obtained during instant coffee (annual 6000000 tons/year of the whole world, rear paddy coffee company 50,000
Ton/year).
Inventor is that low cost is inhaled with discarded rear paddy coffee grounds (HSCG- Hogood Spent Coffee Ground)
Attached dose, interval is carried out to industrial textile colorful wastewater and has decolourized to study.In the course of the research, inventor is surprised to find that through simple
Treated, and coffee grounds has extraordinary effect to processing textile waste.The invention patent is having for textile mills and dye factory
The removal of color waste provides the method for low cost, high efficiency, simplicity.
Summary of the invention
The purpose of the present invention is to provide a kind of coffee slag adsorbent and preparation method thereof for handling industrial textile waste water with
Purposes.
Coffee slag adsorbent is prepared as a raw material by coffee grounds, Coffee pulp and diatomite, wherein each constituent
Weight percent are as follows: diatomite 1~5%, Coffee pulp 10~15%, coffee grounds 83~89%.
Coffee grounds is residue after instant coffee extracted residues and coffee brewing.
The preparation method of the coffee slag adsorbent of industrial textile waste water is handled, it is characterized in that obtaining as follows:
A, filter wash, drying (primary carbonization): respectively washing with water collection coffee grounds, and moisture removal is removed in airing after removing impurity, with
Coffee grounds is placed in drying oven afterwards and is warming up to 105 degrees Celsius, drying 5 hours；Coffee pulp is put into drying oven and is heated up
It is 10 hours dry to 120 degrees Celsius；
B, pyrolysis, carbonization (low-temperature carbonization): coffee grounds, the Coffee pulp after preliminary carbonization are respectively placed in pyrolysis oven and are heated up
To 45 degrees Celsius, dry carbonization 3 hours realizes low-temperature carbonization, obtains coffee grounds, Coffee pulp carbon respectively；
C, washing, precipitating: ash content and impurity are removed again, activator, coffee grounds carbon/activator are uniformly sprayed on coffee grounds carbon
Weight ratio is 97:3, and is sent into cleaning and dipping 5 hours in soak, is aided with ultrasonic mixing, is then dried；On Coffee pulp carbon
Uniformly sprinkling activator, Coffee pulp carbon/activator weight ratio is 99:1, and is sent into cleaning and dipping 5 hours in soak, again
Ash content and impurity are removed, is then dried；
D, it activates, wash acid (being carbonized three times): the coffee grounds carbon of cleaned processing being fed again into pyrolysis installation and carries out high temperature cabonization,
Activator is periodically sprayed in carbonization 8 hours in carbonisation, obtains coffee grounds carbon semi-finished product, and coffee grounds carbon semi-finished product are carried out
Rinsing removes the acidity of coffee grounds carbon semi-finished product, is allowed to be in neutrality；
E, drying, moulding: through rinsing coffee grounds carbon semi-finished product drainage, it is dry after be ground into powdered carbon, drying respectively after smash
And 450-550 μM of sieve is crossed, wherein coffee grounds carbon: Coffee pulp carbon: the weight ratio of potassium permanganate is 85:15:0.1；In mixing
Biogum foam is added in powdered carbon, blocky or graininess is made.
Activator described in step C and step D is binary acid.
Activator described in step C and step D is phosphorous acid.
Drying described in step A is microwave, ultrasound or hot wind conventional drying.
Biogum foam described in step E is coffee activity slag ball, coffee grounds except toner or coffee hypersober.
The sprinkling activator of timing described in step D refers to 1 hour sprinkling activator of every mistake, and the amount sprayed every time is coffee
Slag carbon/activator weight ratio is 95:5.
Purposes of the coffee slag adsorbent in processing industrial textile waste water.
The present invention has following advantages and effect:
The present invention is that (HSCG is only clear with water to inexpensive adsorbent because not having further modification HSCG structure
It washes, removes dirt and color, then dry in an oven).The present invention tests in synthesis and true textile waste.It closes
Most suitable absorption pH at waste water is acid (pH=2), has carried out free pH (not adjusting) experiment to true waste water.Under 25 °C, always
The maximal absorptive capacity of dyestuff (activity) removal is 241 mg/g (pH=2) and 179 mg/g (pH=10).Pass through desorption and reuse point
Analysis, it is determined that most preferably desorption pH value.After color waste water recycles 10 s uses, the adsorption rate of HSCG adsorbent declines from 1 ~ 10 circulation
About 4%.The increased experiment of adsorbent mass shows that total dyestuff removal rate improves a lot.The invention patent is textile mills and dyestuff
The removal of the coloured waste of factory provides new approach.
Detailed description of the invention
Fig. 1 is the electron scanning Electronic Speculum surface mechanism map of coffee slag adsorbent of the invention.
Fig. 2 is that adsorption-desorption cycle is used for coffee slag adsorbent of the invention to true and synthesis textile waste water decoloring
Recycling effect.
Specific embodiment
A kind of coffee slag adsorbent and preparation method thereof handling industrial textile waste water and purposes.
Coffee slag adsorbent is prepared as a raw material by coffee grounds, Coffee pulp and diatomite, wherein each constituent
Weight percent are as follows: diatomite 1~5%, Coffee pulp 10~15%, coffee grounds 83~89%.
Coffee grounds is residue after instant coffee extracted residues and coffee brewing.
The preparation method of the coffee slag adsorbent of industrial textile waste water is handled, it is characterized in that obtaining as follows:
A, filter wash, drying (primary carbonization): respectively washing with water collection coffee grounds, and moisture removal is removed in airing after removing impurity, with
Coffee grounds is placed in drying oven afterwards and is warming up to 105 degrees Celsius, drying 5 hours；Coffee pulp is put into drying oven and is heated up
It is 10 hours dry to 120 degrees Celsius；
B, pyrolysis, carbonization (low-temperature carbonization): coffee grounds, the Coffee pulp after preliminary carbonization are respectively placed in pyrolysis oven and are heated up
To 45 degrees Celsius, dry carbonization 3 hours realizes low-temperature carbonization, obtains coffee grounds, Coffee pulp carbon respectively；
C, washing, precipitating: ash content and impurity are removed again, activator, coffee grounds carbon/activator are uniformly sprayed on coffee grounds carbon
Weight ratio is 97:3, and is sent into cleaning and dipping 5 hours in soak, is aided with ultrasonic mixing, is then dried；On Coffee pulp carbon
Uniformly sprinkling activator, Coffee pulp carbon/activator weight ratio is 99:1, and is sent into cleaning and dipping 5 hours in soak, again
Ash content and impurity are removed, is then dried；
D, it activates, wash acid (being carbonized three times): the coffee grounds carbon of cleaned processing being fed again into pyrolysis installation and carries out high temperature cabonization,
Activator is periodically sprayed in carbonization 8 hours in carbonisation, obtains coffee grounds carbon semi-finished product, and coffee grounds carbon semi-finished product are carried out
Rinsing removes the acidity of coffee grounds carbon semi-finished product, is allowed to be in neutrality；
E, drying, moulding: through rinsing coffee grounds carbon semi-finished product drainage, it is dry after be ground into powdered carbon, drying respectively after smash
And 450-550 μM of sieve is crossed, wherein coffee grounds carbon: Coffee pulp carbon: the weight ratio of potassium permanganate is 85:15:0.1；In mixing
Biogum foam is added in powdered carbon, blocky or graininess is made.
Activator described in step C and step D is binary acid.
Activator described in step C and step D is phosphorous acid.
Drying described in step A is microwave, ultrasound or hot wind conventional drying.
Biogum foam described in step E is coffee activity slag ball, coffee grounds except toner or coffee hypersober.
The sprinkling activator of timing described in step D refers to 1 hour sprinkling activator of every mistake, and the amount sprayed every time is coffee
Slag carbon/activator weight ratio is 95:5.
Purposes of the coffee slag adsorbent in processing industrial textile waste water.
Below with reference to embodiment, the present invention is further illustrated, but the present invention is limited in any way,
Based on present invention teach that it is made it is any transform or replace, all belong to the scope of protection of the present invention.
Embodiment 1:
The preparation of coffee slag adsorbent:
A, filter wash, drying (primary carbonization): respectively washing with water collection coffee grounds, and moisture removal is removed in airing after removing impurity, with
Coffee grounds is placed in drying oven afterwards and is warming up to 105 degrees Celsius, drying 5 hours；Coffee pulp is put into drying oven and is heated up
It is 10 hours dry to 120 degrees Celsius；
B, pyrolysis, carbonization (low-temperature carbonization): coffee grounds, the Coffee pulp after preliminary carbonization are respectively placed in pyrolysis oven and are heated up
To 45 degrees Celsius, dry carbonization 3 hours realizes low-temperature carbonization, obtains coffee grounds, Coffee pulp carbon respectively；
C, washing, precipitating: ash content and impurity are removed again, activator, coffee grounds carbon/activator are uniformly sprayed on coffee grounds carbon
Weight ratio is 97:3, and is sent into cleaning and dipping 5 hours in soak, is aided with ultrasonic mixing, is then dried；On Coffee pulp carbon
Uniformly sprinkling activator, Coffee pulp carbon/activator weight ratio is 99:1, and is sent into cleaning and dipping 5 hours in soak, again
Ash content and impurity are removed, is then dried；
D, it activates, wash acid (being carbonized three times): the coffee grounds carbon of cleaned processing being fed again into pyrolysis installation and carries out high temperature cabonization,
Carbonization 8 hours, periodically sprays phosphorous acid, 1 hour sprinkling phosphorous acid of every mistake in carbonisation, and the amount sprayed every time is coffee grounds
Carbon/activator weight ratio is 95:5.Coffee grounds carbon semi-finished product are obtained, coffee grounds carbon semi-finished product are rinsed, remove coffee grounds
The acidity of carbon semi-finished product is allowed to be in neutrality；
E, drying, moulding: through rinsing coffee grounds carbon semi-finished product drainage, it is dry after be ground into powdered carbon, drying respectively after smash
And 450-550 μM of sieve is crossed, wherein coffee grounds carbon: Coffee pulp carbon: the weight ratio of potassium permanganate is 85:15:0.1；In mixing
Biogum foam is added in powdered carbon, blocky or graininess is made.
1 preparation parameter of table
Embodiment 2: coffee grounds sorbent structure characteristic
Composition measuring by the coffee slag adsorbent of embodiment 1(3) preparation is 32% water, 12% protein, 10% lipid, 38% carbon
Hydrate and 6% ash content and 2% other substances.Surface-functionalized substance group is 0.97mmol/ grams of carboxyl and base
0.93mmol/ grams, be secondly 0.15mmol/ grams and 0.16mmol/ grams of lactone of phenylol.
The form for the green coffee hypersober that attached drawing 1 is shown according to electron micrograph obtained.Clearly
Be that its surface is not smooth, be filled with cavity.These cavitys can be characterized as being channel on the surface instead of green
Color coffee hypersober hole is calculated using micro spectroscopic BET (Brunauer, Emmett and Teller) Surface Area Analyzer
Adsorption surface area be ~ 2.5m2/g。
Embodiment 3: the test in synthesis and true textile waste
The waste water of dyestuff factory discharge is to cause one of maximum reason of water pollution.In waste water containing dye processing, most study
Dye class is active and alkaline dyestuff.
The maximum of dye loss from dyeing to effluent is that reactive dye about lose 10%-50%, these will
It is textile industry primary pollution source；Processing/remove these reactive dye head ought be wherein.Since the waste water containing dyestuff is difficult to be located
Reason, they are organic molecules difficult to degrade, resistance to aerobic sigestion, and are stable for light, heat and oxidant.
Reactive dye are related to 5 procedures, i.e. desizing, concise, bleaching, dyeing and finisher to the dyeing course of cotton fabric
Sequence, the waste stream from every sub- process are collected in one " balancing tank ", they are mixed and homogenize there.
1, synthesize the test in textile waste
Artificial synthesized reactive dye: thunder horse azoles is red, thunder horse azoles is yellow and thunder horse azoles indigo plant is respectively with the mixing of 30%, 30% and 40% concentration
Decolorization is carried out, experiments have shown that the most suitable absorption pH of artificial synthesized waste water is acid (pH=2).Using Lang Gemiaoer equation
(Langmuir), equation (Freundlich) is wished in not bright Delhi and ((Langmuir- is wished in the Delhi Lang Gemiaoer-Fu Lang
Freundlich, L-F) Composite Equations adsorption equation models fitting equilibrium data shows: under 25 °C, total dyestuff (reactive dye)
Maximal absorptive capacity (the Q of removalmax) it is 254 mg/g (pH=2) and 189 mg/g (pH=10).To coffee grounds prepared by the present invention
The increased experiment of adsorbent mass shows that coffee slag adsorbent prepared by the present invention also has very big mention to the total removal rate of dyestuff
It is high.
Table 2. is in Optimal pH=2 and pH ~ 10, under 25,45 and 65 °C of natural conditions, the processing synthesis of coffee slag adsorbent
The result of waste water
2, the test in true textile waste
The measurement of textile mills' dyestuff: reactive dye are related to 5 procedures, i.e. desizing, concise, bleaching, dye to the dyeing course of cotton fabric
Color and arranging process, the waste stream from every sub- process are collected in one " balancing tank ", there they be mixed and
Homogenization.Main comprise material is that thunder horse azoles is red, thunder horse azoles is yellow and thunder horse azoles is blue.Textile waste is determined in pH value (pH ~ 10)
In the case of not adjusting, total residual dye content is respectively to be added to 1g/L coffee slag adsorbent, absorption effect when concentration 700mg/L
Rate reaches 100%.When using textile mills' content high dyestuff (true dyestuff), with the increase of adsorbent amount, decolorizing effect
Reach and is obviously improved.When coffee grounds adsorbent amount is 10g/L, can be observed to decolourize completely.
Reuse measurement: the reuse situation in order to study material therefor uses concentration in the coffee slag adsorbent of 1g/L
The artificial synthesized dyestuff of 700mg/L (reactive dye) and about 700mg/L textile mills dyestuff have carried out continuous 10 Batch Adsorption-solutions
Inhale experiment to show: coffee slag adsorbent has dropped 4%(Fig. 2 in the adsorption rate using the 1st to the 10th period).This decline can return
Because in following reason: (1) dye molecule is to activated adoption site/group gradually saturation；(2) material under the conditions of extreme pH
Degradation；(3) impurity that may be present causes adsorption potential to be declined slightly the gradually obstruction of adsorbent activity central passage.
Claims (9)
1. it is a kind of handle industrial textile waste water coffee slag adsorbent, characterized in that the coffee slag adsorbent by coffee grounds,
Coffee pulp and diatomite are prepared as a raw material, wherein the weight percent of each constituent are as follows: diatomite 1~5%, coffee
Pericarp 10~15%, coffee grounds 83~89%.
2. coffee slag adsorbent according to claim 1, it is characterized in that coffee grounds is instant coffee extracted residues and coffee
Coffee brews rear residue.
3. a kind of preparation method of the coffee slag adsorbent of processing industrial textile waste water as claimed in claim 1 or 2, feature
It is to obtain as follows:
A, filter wash, drying (primary carbonization): respectively washing with water collection coffee grounds, and moisture removal is removed in airing after removing impurity, with
Coffee grounds is placed in drying oven afterwards and is warming up to 105 degrees Celsius, drying 5 hours；Coffee pulp is put into drying oven and is heated up
It is 10 hours dry to 120 degrees Celsius；
B, pyrolysis, carbonization (low-temperature carbonization): coffee grounds, the Coffee pulp after preliminary carbonization are respectively placed in pyrolysis oven and are heated up
To 45 degrees Celsius, dry carbonization 3 hours realizes low-temperature carbonization, obtains coffee grounds, Coffee pulp carbon respectively；
C, washing, precipitating: ash content and impurity are removed again, activator, coffee grounds carbon/activator are uniformly sprayed on coffee grounds carbon
Weight ratio is 97:3, and is sent into cleaning and dipping 5 hours in soak, is aided with ultrasonic mixing, is then dried；On Coffee pulp carbon
Uniformly sprinkling activator, Coffee pulp carbon/activator weight ratio is 99:1, and is sent into cleaning and dipping 5 hours in soak, again
Ash content and impurity are removed, is then dried；
D, it activates, wash acid (being carbonized three times): the coffee grounds carbon of cleaned processing being fed again into pyrolysis installation and carries out high temperature cabonization,
Activator is periodically sprayed in carbonization 8 hours in carbonisation, obtains coffee grounds carbon semi-finished product, and coffee grounds carbon semi-finished product are carried out
Rinsing removes the acidity of coffee grounds carbon semi-finished product, is allowed to be in neutrality；
E, drying, moulding: through rinsing coffee grounds carbon semi-finished product drainage, it is dry after be ground into powdered carbon, drying respectively after smash
And 450-550 μM of sieve is crossed, wherein coffee grounds carbon: Coffee pulp carbon: the weight ratio of potassium permanganate is 85:15:0.1；In mixing
Biogum foam is added in powdered carbon, blocky or graininess is made.
4. according to the method described in claim 3, it is characterized in that activator described in step C and step D is binary acid.
5. according to the method described in claim 3, it is characterized in that activator described in step C and step D is phosphorous acid.
6. according to the method described in claim 3, it is characterized in that drying described in step A is that microwave, ultrasound or hot wind are normal
Advise drying.
7. according to the method described in claim 3, it is characterized in that biogum foam described in step E is coffee activity slag
Ball, coffee grounds remove toner or coffee hypersober.
8. according to the method described in claim 3, it is characterized in that the sprinkling activator of timing described in step D refers to every mistake 1
Hour sprinkling activator, the amount sprayed every time is that coffee grounds carbon/activator weight ratio is 95:5.
9. purposes of the coffee slag adsorbent described in claim 1 ~ 2 in processing industrial textile waste water.
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| CN110523391A (en) * | 2019-09-16 | 2019-12-03 | 成都工业学院 | A kind of preparation method and application of cyclodextrin improvement biomass coffee grounds |
| CN110523390A (en) * | 2019-08-23 | 2019-12-03 | 华南理工大学 | One kind having hydrophobic coffee slag adsorbent and preparation method thereof |
| CN110801808A (en) * | 2019-11-06 | 2020-02-18 | 天津城建大学 | Preparation method and application of coffee grounds biochar |
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| CN110523390B (en) * | 2019-08-23 | 2021-08-10 | 华南理工大学 | Coffee residue adsorbent with hydrophobicity and preparation method thereof |
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