CN104759251A - Cottonseed hull/titanium dioxide composite heavy metal adsorbent and preparation method thereof - Google Patents
Cottonseed hull/titanium dioxide composite heavy metal adsorbent and preparation method thereof Download PDFInfo
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- CN104759251A CN104759251A CN201510123561.5A CN201510123561A CN104759251A CN 104759251 A CN104759251 A CN 104759251A CN 201510123561 A CN201510123561 A CN 201510123561A CN 104759251 A CN104759251 A CN 104759251A
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Abstract
The invention discloses a cottonseed hull/titanium dioxide composite heavy metal adsorbent, which comprises the following raw materials by weight part: 40-50 parts of cottonseed casing, 3-5 parts of nanometer titanium dioxide, 3-5 parts of quartz powder, 3-5 parts of zeolite powder, 4-8 parts of sweet rice flour, 2-4 parts of urea, 2-4 parts of sodium tripolyphosphate, 2-4 parts of glycerin, 2-4 parts of polyvinyl alcohol, 0.3-0.5 parts of sodium lauroyl sarcosine and 0.1-0.2 parts of boric acid. The heavy metal adsorbent raw material of the present invention has the advantages of low cost, wide source, simple technology, strong heavy metal adsorption capability, high mechanical strength and stability, no secondary pollution, easy recovery, and high social benefit and economic benefit.
Description
Technical field
The present invention relates to environmental treatment field, be specifically related to a kind of cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent and preparation method thereof.
Background technology
Along with progress and the social development of industry, the heavy metal discarded object of the industry such as metallurgy, process hides and everyday life discharge increases, and causes Heavy-Metal-Contaminated Environments to aggravate.Because heavy metal ion can not be degraded by microorganisms, and have enriching in vivo, serious threat is to ecological environment and human health.The process of heavy metal wastewater thereby is also more and more paid attention to.
Absorption method process heavy metal pollution has the advantages such as simple to operate, efficient, wide variety, and especially having unique using value to low concentration heavy metal water, is the process for treating heavy-metal waste water be most widely used.But at present conventional adsorbent is expensive, limits the large-scale application of absorption method, therefore develop cheapness, one, adsorbent is important efficiently research direction.For improving economy and the practicality of absorption method wastewater treatment, the sorbing material of exploitation wide material sources, low cost is very necessary.In addition, the recycling problem of adsorbent and secondary pollution are also the problems should considered emphatically in Heavymetal Wastewater Treatment by Adsorption.
Summary of the invention
The object of this invention is to provide a kind of cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent, low in raw material price, wide material sources, technique is simple, and heavy metal adsorption is strong, and non-secondary pollution, easily reclaims.
The present invention is achieved by the following technical solutions:
A kind of cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent, it is characterized in that, it is obtained by the raw material of following weight parts:
Cotton seed hulls 40-50, nano titanium oxide 3-5, silica flour 3-5, zeolite powder 3-5, glutinous rice flour 4-8, urea 2-4, sodium phosphate trimer 2-4, glycerine 2-4, polyvinyl alcohol 2-4, sodium lauroyl sarcosine 0.3-0.5, boric acid 0.1-0.2.
A preparation method for cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent, comprises the following steps:
(1) take raw material by weight, after first being mixed with silica flour, zeolite powder by cotton seed hulls, 200-300 DEG C processes 1-2h, then adds urea and sodium phosphate trimer co-ground to 400-600 order;
(2) material obtained in step (1) is mixed with glutinous rice flour, polyvinyl alcohol and nano titanium oxide, add water by solid-liquid weight ratio 1:0.5-1:1, first ultrasonic disperse 5-10min, then add glycerine, stir 1-2h in 85-95 DEG C;
(3) after being mixed with sodium lauroyl sarcosine, boric acid by the material obtained in step (2), 800-1000r/min stirs extruding pelletization after 15-30min, 100-150 DEG C of drying, obtains the composite particles of size 3-4mm;
(4) composite particles obtained in step (3) is calcined 15-20min under 650-850 DEG C of condition, packing after cooling, to obtain final product.
Nano titanium oxide has photocatalytic activity, can play the effect of sterilization, deodorizing, degradable organic pollutant, and heavy metal has certain adsorption capacity simultaneously.Cotton seed hulls is common agricultural residue, is the shell that cottonseed is left after decorticator is separated, and containing a large amount of boll hull cellulose and a small amount of velveteen, has high adsorption capacity after high-temperature calcination charing.Effectively utilize cotton seed hulls, be conducive to reducing costs, reduce cotton seed hulls to the burden of environment, energy-conserving profit waste.
Advantage of the present invention is:
1. the present invention combines with agricultural residue cotton seed hulls as major ingredient load nano-titanium dioxide, by adsorption capacity improving recipe optimization both combining, the heavy metal absorbent obtained is made to have loose structure, specific area is large, adsorption capacity is large, there is good heavy metal adsorption performance, also have auxiliary effect of sterilization, purifying water body, be applicable to the process of low concentration heavy metal water;
2. preparation is simple, low in raw material price, abundance, and process is safe and harmless, and obtained adsorbent is particle shape, mechanical strength and stability high, be easy to reclaim, non-secondary pollution.
Detailed description of the invention
Non-limiting examples of the present invention is as follows:
A kind of cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent, is prepared from by the component raw material of following weight (kg):
Cotton seed hulls 45, nano titanium oxide 4, silica flour 4, zeolite powder 4, glutinous rice flour 6, urea 3, sodium phosphate trimer 3, glycerine 3, polyvinyl alcohol 3, sodium lauroyl sarcosine 0.4, boric acid 0.15.
The preparation method of cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent comprises the following steps:
(1) take raw material by weight, first cotton seed hulls is mixed latter 300 DEG C with silica flour, zeolite powder and process 1h, then add urea and sodium phosphate trimer co-ground to 600 order;
(2) material obtained in step (1) is mixed with glutinous rice flour, polyvinyl alcohol and nano titanium oxide, add water by solid-liquid weight ratio 1:0.5, first ultrasonic disperse 5min, then add glycerine, stir 1h in 90 DEG C;
(3) after being mixed with sodium lauroyl sarcosine, boric acid by the material obtained in step (2), 1000r/min stirs 15min, extruding pelletization after 150 DEG C of dryings, the composite particles of obtained size 3-4mm;
(4) composite particles obtained in step (3) is calcined 15min under 800 DEG C of conditions, packing after cooling, to obtain final product.
20 DEG C, measure heavy metal adsorption performance under the condition of pH=6.0, above-mentioned obtained heavy metal absorbent is to Cu
2+adsorption capacity be 29.46mg/g, to Pb
2+adsorption capacity be 33.82mg/g.
Claims (2)
1. cotton seed hulls/titanium dioxide Compound Heavy Metals adsorbent, is characterized in that, it is obtained by the raw material of following weight parts:
Cotton seed hulls 40-50, nano titanium oxide 3-5, silica flour 3-5, zeolite powder 3-5, glutinous rice flour 4-8, urea 2-4, sodium phosphate trimer 2-4, glycerine 2-4, polyvinyl alcohol 2-4, sodium lauroyl sarcosine 0.3-0.5, boric acid 0.1-0.2.
2. the preparation method of a kind of cotton seed hulls according to claim 1/titanium dioxide Compound Heavy Metals adsorbent, is characterized in that, comprise the following steps:
(1) take raw material by weight, after first being mixed with silica flour, zeolite powder by cotton seed hulls, 200-300 DEG C processes 1-2h, then adds urea and sodium phosphate trimer co-ground to 400-600 order;
(2) material obtained in step (1) is mixed with glutinous rice flour, polyvinyl alcohol and nano titanium oxide, add water by solid-liquid weight ratio 1:0.5-1:1, first ultrasonic disperse 5-10min, then add glycerine, stir 1-2h in 85-95 DEG C;
(3) after being mixed with sodium lauroyl sarcosine, boric acid by the material obtained in step (2), 800-1000r/min stirs extruding pelletization after 15-30min, 100-150 DEG C of drying, obtains the composite particles of size 3-4mm;
(4) composite particles obtained in step (3) is calcined 15-20min under 650-850 DEG C of condition, packing after cooling, to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510123561.5A CN104759251A (en) | 2015-03-20 | 2015-03-20 | Cottonseed hull/titanium dioxide composite heavy metal adsorbent and preparation method thereof |
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| CN201510123561.5A CN104759251A (en) | 2015-03-20 | 2015-03-20 | Cottonseed hull/titanium dioxide composite heavy metal adsorbent and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105879852A (en) * | 2016-06-16 | 2016-08-24 | 马鞍山市顺达环保设备有限公司 | Heavy metal absorbent |
| CN107262034A (en) * | 2017-07-12 | 2017-10-20 | 光合文旅控股股份有限公司 | A kind of gardens sewage-treating agent and preparation method thereof |
| CN108404876A (en) * | 2018-04-04 | 2018-08-17 | 高猛 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
| CN108990988A (en) * | 2016-04-18 | 2018-12-14 | 华南农业大学 | A kind of barrier and its application method reducing crop edible part content of beary metal |
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| CN103521193A (en) * | 2013-10-25 | 2014-01-22 | 鲁东大学 | Method for improving adsorption capacity of enoki mushroom industrialized production waste bacteria bags to heavy metals |
| CN103570015A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Fingered citron slag activated carbon and preparation method thereof |
| CN103752268A (en) * | 2014-01-16 | 2014-04-30 | 广东工业大学 | Preparation method of filter core for adsorbing heavy metal, arsenic and fluorine in drinking water and application thereof |
| CN104096540A (en) * | 2014-07-17 | 2014-10-15 | 同济大学 | Preparation method of adsorption and catalysis material for removing heavy metals and organic pollutants in municipal sludge |
| CN104226252A (en) * | 2014-10-10 | 2014-12-24 | 天津工业大学 | Preparation method and application of carbon black and nanometer titania composite material |
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Patent Citations (5)
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| CN103570015A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Fingered citron slag activated carbon and preparation method thereof |
| CN103521193A (en) * | 2013-10-25 | 2014-01-22 | 鲁东大学 | Method for improving adsorption capacity of enoki mushroom industrialized production waste bacteria bags to heavy metals |
| CN103752268A (en) * | 2014-01-16 | 2014-04-30 | 广东工业大学 | Preparation method of filter core for adsorbing heavy metal, arsenic and fluorine in drinking water and application thereof |
| CN104096540A (en) * | 2014-07-17 | 2014-10-15 | 同济大学 | Preparation method of adsorption and catalysis material for removing heavy metals and organic pollutants in municipal sludge |
| CN104226252A (en) * | 2014-10-10 | 2014-12-24 | 天津工业大学 | Preparation method and application of carbon black and nanometer titania composite material |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108990988A (en) * | 2016-04-18 | 2018-12-14 | 华南农业大学 | A kind of barrier and its application method reducing crop edible part content of beary metal |
| CN108990988B (en) * | 2016-04-18 | 2021-05-18 | 华南农业大学 | Barrier agent for reducing heavy metal content of edible part of crop and use method thereof |
| CN105879852A (en) * | 2016-06-16 | 2016-08-24 | 马鞍山市顺达环保设备有限公司 | Heavy metal absorbent |
| CN107262034A (en) * | 2017-07-12 | 2017-10-20 | 光合文旅控股股份有限公司 | A kind of gardens sewage-treating agent and preparation method thereof |
| CN107262034B (en) * | 2017-07-12 | 2020-07-03 | 山东光合园林有限公司 | Garden sewage treatment agent and preparation method thereof |
| CN108404876A (en) * | 2018-04-04 | 2018-08-17 | 高猛 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
| CN108404876B (en) * | 2018-04-04 | 2019-08-23 | 乐清市华尊电气有限公司 | A kind of Industrial Wastewater Treatment adsorbent and preparation method thereof |
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Effective date of registration: 20160201 Address after: 230601 Ziyun Road, Anhui, China, No. 292, No. Applicant after: Anhui University of Architecture Address before: 230022 School of environmental and energy engineering, Anhui University of architecture, Hefei 856, Jinzhai South Road, Anhui Applicant before: Huang Xianhuai Applicant before: Tang Yuchao |
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Application publication date: 20150708 |
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