JPH08206684A - Heavy metal ion removing method - Google Patents
Heavy metal ion removing methodInfo
- Publication number
- JPH08206684A JPH08206684A JP4496095A JP4496095A JPH08206684A JP H08206684 A JPH08206684 A JP H08206684A JP 4496095 A JP4496095 A JP 4496095A JP 4496095 A JP4496095 A JP 4496095A JP H08206684 A JPH08206684 A JP H08206684A
- Authority
- JP
- Japan
- Prior art keywords
- heavy metal
- metal ions
- acidic
- alga
- ions
- 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
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims description 17
- 150000002500 ions Chemical class 0.000 claims abstract description 50
- 230000002378 acidificating effect Effects 0.000 claims abstract description 46
- 241000195628 Chlorophyta Species 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 5
- 239000011574 phosphorus Substances 0.000 claims abstract description 5
- 235000015097 nutrients Nutrition 0.000 claims abstract description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 3
- 239000010941 cobalt Substances 0.000 claims abstract description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 3
- 239000011701 zinc Substances 0.000 claims abstract description 3
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 241000195493 Cryptophyta Species 0.000 claims description 13
- 238000012258 culturing Methods 0.000 claims description 7
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 claims 1
- 239000003929 acidic solution Substances 0.000 abstract description 5
- 229910052785 arsenic Inorganic materials 0.000 abstract description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 abstract 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract 1
- 235000010333 potassium nitrate Nutrition 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 239000002440 industrial waste Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000003912 environmental pollution Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- -1 arsenic ions Chemical class 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003295 industrial effluent Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000243 photosynthetic effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical group O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、酸性水溶液中の重金属
イオンの除去方法に関するものである。さらに詳しくい
えば、本発明は、酸性条件下で生育する緑藻類の生体機
能を利用することで、鉱山排水や産業廃液中などに含ま
れる環境汚染をもたらす重金属イオンを、酸性下で効率
よく除去することができ、環境汚染対策として有用な重
金属イオンの除去方法に関するものである。FIELD OF THE INVENTION The present invention relates to a method for removing heavy metal ions from an acidic aqueous solution. More specifically, the present invention utilizes biological functions of green algae that grow under acidic conditions to efficiently remove heavy metal ions contained in mine drainage, industrial wastewater, etc. that cause environmental pollution under acidic conditions. The present invention relates to a method for removing heavy metal ions, which is useful as a measure against environmental pollution.
【０００２】[0002]
【従来の技術】鉱山排水や工場などから発生する産業廃
液は、酸性であるとともに、生態系に対して有害な重金
属イオンが含まれていることが多い。このような鉱山排
水や産業廃液をそのまま河川や海などに排出すると環境
汚染をもたらすために、予め中性にし、重金属イオンを
除去してから排出することが必要であり、また、資源の
リサイクルの点からも、そのまま廃棄することは好まし
くない。2. Description of the Related Art Industrial effluents generated from mine drainage and factories are acidic and often contain heavy metal ions that are harmful to the ecosystem. In order to bring about environmental pollution if such mine drainage or industrial waste liquid is directly discharged to rivers or the sea, it is necessary to neutralize it beforehand and remove heavy metal ions before discharging it. From the point of view, it is not preferable to dispose as it is.
【０００３】このような鉱山排水や産業廃液の処理に
は、これまで、アルカリ剤を用いて中性にするととも
に、重金属イオンを水酸化物の形にしたのち、ゼオライ
ト、シリカゲル、合成樹脂などを用いて吸着除去する方
法が主として用いられてきた。しかしながら、このよう
な方法においては、アルカリ剤を多量に必要とし、かつ
二次廃棄物が多量に排出する上、処理に多くの手数と設
備を必要とし、また、有用な重金属の回収も困難であ
り、実用化には多くの解決しなければならない問題があ
る。For the treatment of such mine drainage and industrial waste liquid, until now, neutralization has been made with an alkali agent, and heavy metal ions have been made into hydroxide form, and then zeolite, silica gel, synthetic resin, etc. have been used. The method of adsorption removal by using has been mainly used. However, in such a method, a large amount of an alkaline agent is required, a large amount of secondary waste is discharged, a large amount of labor and equipment are required for the treatment, and it is difficult to recover useful heavy metals. There are many problems to be solved for practical use.
【０００４】したがって、重金属イオンを含む酸性の鉱
山排水や産業廃液を、アルカリ剤などの薬品を用いずに
中性化が可能であり、かつ重金属イオンを簡単な操作で
除去することができ、しかも二次廃棄物を排出すること
なく、重金属の回収が容易な処理方法の開発が強く望ま
れていた。Therefore, acidic mine drainage and industrial waste liquid containing heavy metal ions can be neutralized without using chemicals such as alkali agents, and heavy metal ions can be removed by a simple operation. There has been a strong demand for the development of a treatment method in which heavy metals can be easily recovered without discharging secondary waste.
【０００５】他方、微生物藻類を利用して、廃液中の重
金属イオンを回収することが試みられているが、これま
で用いられてきた微生物藻類は酸性水溶液中では生育で
きないため、酸性水溶液中の重金属イオンの除去にはほ
とんど効果がなかった。On the other hand, it has been attempted to recover heavy metal ions in waste liquid by utilizing microbial algae. However, since the microbial algae used so far cannot grow in an acidic aqueous solution, heavy metals in the acidic aqueous solution are not able to grow. It had little effect on removing ions.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、このような
事情のもとで、鉱山排水や産業廃液などの重金属イオン
を含む酸性水溶液から、該重金属イオンを簡単な操作で
除去することができる上、二次廃棄物を排出せず、かつ
重金属の回収が容易であり、しかもアルカリ剤を用いな
くても中性化が可能な酸性水溶液中の重金属イオンの除
去方法を提供することを目的としてなされたものであ
る。Under the circumstances, the present invention can remove heavy metal ions from acidic aqueous solutions containing heavy metal ions such as mine drainage and industrial waste liquid by a simple operation. Above, for the purpose of providing a method for removing heavy metal ions in an acidic aqueous solution that does not discharge secondary waste, is easy to recover heavy metals, and can be neutralized without using an alkali agent. It was made.
【０００７】[0007]
【課題を解決するための手段】本発明者らは、前記目的
を達成するために鋭意研究を重ねた結果、緑藻類酸性藻
は酸性条件下で生育し、しかも生体内に重金属イオンを
取り込むと共に、硫酸イオンや炭酸イオンなどの酸性イ
オンを取り込む能力を有しており、したがって、この緑
藻類酸性藻を重金属イオンを含む酸性水溶液中にて光照
射下で培養することにより、その目的を達成しうること
を見出し、この知見に基づいて本発明を完成するに至っ
た。Means for Solving the Problems The inventors of the present invention have conducted extensive studies in order to achieve the above-mentioned object, and as a result, green algae acidic algae grow under acidic conditions and, in addition, incorporate heavy metal ions into the living body, It has the ability to take in acidic ions such as sulfate ions and carbonate ions, and therefore it is possible to achieve the object by culturing this green algae acidic algae in an acidic aqueous solution containing heavy metal ions under light irradiation. The present invention has been completed based on this finding.
【０００８】すなわち、本発明は、重金属イオンを含む
酸性水溶液中において、光照射下で緑藻類酸性藻を培養
することにより、この酸性藻の生体内に重金属イオンを
取り込ませることを特徴とする重金属イオンの除去方法
を提供するものである。That is, the present invention is characterized in that a heavy metal ion is incorporated into the living body of the acidic alga by culturing the acidic alga of the green alga under light irradiation in an acidic aqueous solution containing the heavy metal ion. The present invention provides a method of removing the above.
【０００９】また、本発明を実施するための好ましい態
様は、緑藻類酸性藻の生体内に重金属イオンと共に酸性
イオンを取り込ませ、酸性溶液を中性化する前記重金属
イオンの除去方法である。A preferred embodiment for carrying out the present invention is the method for removing heavy metal ions, wherein the acidic solution is neutralized by incorporating the acidic ions together with the heavy metal ions into the living body of green algae acidic algae.
【００１０】本発明方法において用いられる緑藻類酸性
藻は、鉱山排水などに生育する微細藻類の１種であっ
て、５〜１０μｍ程度の単細胞から成り、通常ｐＨ４以
下で採取できるものである。この緑藻類酸性藻は、生物
に有毒な銅を２０ｐｐｍ以上含有する水溶液中におい
て、大気中の二酸化炭素、光エネルギー、無機の窒素及
びリンの存在下で生育する光合成微生物であり、光の照
度、温度、培地中の元素濃度、ｐＨなどを生育する環境
条件に調整することにより、増殖させることができる。The green alga acidic alga used in the method of the present invention is one kind of microalgae that grows in mine drainage and the like, is composed of single cells of about 5 to 10 μm, and can be usually collected at a pH of 4 or less. This green alga acid alga is a photosynthetic microorganism that grows in the presence of carbon dioxide, light energy, inorganic nitrogen and phosphorus in the atmosphere in an aqueous solution containing 20 ppm or more of copper toxic to living organisms. It can be grown by adjusting the elemental concentration in the medium, pH and the like to the environmental conditions for growth.
【００１１】本発明方法においては、この緑藻類酸性藻
を、重金属イオンを含む酸性水溶液中において光照射下
において培養を行うが、培養条件としては、通常ｐＨ４
以下の重金属イオンを含む酸性水溶液１リットルに対
し、窒素元素が７２〜１４４ｍｇ（ＫＮＯ3として）及
びリン元素が４．５〜９ｍｇ程度（ＫＨ2ＰＯ4として）
に、かつＮ／Ｐ原子比が１０〜２０程度になるように無
機の窒素源及びリン源を添加し、１５〜３０℃程度、好
ましくは２０〜２５℃の範囲の温度において、光を照度
１，０００〜１０，０００ルックス程度、好ましくは
３，０００〜６，０００ルックスの範囲で照射し、培養
を行う。In the method of the present invention, the acidic algae of green algae are cultivated in an acidic aqueous solution containing heavy metal ions under irradiation with light.
72 to 144 mg of nitrogen element (as KNO 3 ) and about 4.5 to 9 mg of phosphorus element (as KH 2 PO 4 ) per 1 liter of acidic aqueous solution containing the following heavy metal ions.
And an inorganic nitrogen source and a phosphorus source are added so that the N / P atomic ratio is about 10 to 20, and the illuminance is 1 Irradiation is carried out in the range of about 1,000 to 10,000 lux, preferably 3,000 to 6,000 lux, to carry out culture.
【００１２】このような培養条件のもとで、緑藻類酸性
藻の生育が停止すると培地中の栄養元素が一定になるよ
うに栄養を供給し、より高濃度に維持することにより、
水溶液中の重金属イオンが緑藻類酸性藻の生体内に効率
よく取り込まれ、除去されるとともに、硫酸イオンや炭
酸イオンなどの酸性イオンも該生体内に取り込まれ、酸
性水溶液は中性化される。Under such culture conditions, when the growth of green algae acidic algae is stopped, nutrients are supplied so that the nutrient elements in the medium become constant, and by maintaining a higher concentration,
The heavy metal ions in the aqueous solution are efficiently taken into and removed from the living body of green algae acidic algae, and at the same time, acidic ions such as sulfate ions and carbonate ions are taken into the living body, and the acidic aqueous solution is neutralized.
【００１３】緑藻類酸性藻の増殖が最大密度に達したな
らば、必要に応じ冷却したのち、遠心分離などの手段に
より緑藻類酸性藻を沈殿、濃縮させ、回収する。この培
養時間は、通常４〜７日間程度である。回収された緑藻
類酸性藻の生体内に取り込まれた重金属は、適当な処理
を施すことにより、該生体内から取り出し、有用金属と
して回収することができる。When the density of the green algae acidic algae reaches the maximum density, the green algae acidic algae are precipitated, concentrated and recovered by a means such as centrifugation after cooling if necessary. This culture time is usually about 4 to 7 days. The heavy metal taken into the living body of the recovered green algae acidic alga can be taken out from the living body by an appropriate treatment and collected as a useful metal.
【００１４】なお、前記培養条件、特に元素組成を変化
させて、緑藻類酸性藻の増殖能力を刺激することによ
り、その生育量をさらに高め、重金属イオンの除去能力
を上げることができる。By changing the culture conditions, particularly the elemental composition, to stimulate the growth ability of green algae acidic algae, the growth amount thereof can be further increased and the heavy metal ion removing ability can be increased.
【００１５】本発明方法が適用できる重金属イオンとし
ては、例えば銅、カドミウム、ニッケル、コバルト、亜
鉛、ヒ素イオンなどが挙げられる。Examples of heavy metal ions to which the method of the present invention can be applied include copper, cadmium, nickel, cobalt, zinc and arsenic ions.
【００１６】[0016]
【発明の効果】本発明によると、鉱山排水や産業廃液な
どの環境汚染をもたらす重金属イオンを含む酸性水溶液
中において、緑藻類酸性藻を培養することにより、この
生体内に重金属イオンを取り込ませ、効率よく重金属イ
オンを除去することができる上、二次廃棄物を排出せ
ず、かつ生体内に取り込まれた重金属の回収が容易であ
り、しかもアルカリ剤を用いなくても、鉱山排水や産業
廃液の中性化が可能である。したがって、本発明方法
は、環境汚染対策として極めて有用である。According to the present invention, by culturing acidic algae of green algae in an acidic aqueous solution containing heavy metal ions that cause environmental pollution such as mine drainage and industrial waste liquid, the heavy metal ions are taken into the living body to improve efficiency. Heavy metal ions can be removed well, secondary waste is not discharged, and heavy metals taken up in the living body can be easily recovered. Moreover, even without using an alkaline agent, mine drainage and industrial waste liquid Neutralization is possible. Therefore, the method of the present invention is extremely useful as a measure against environmental pollution.
【００１７】[0017]
【実施例】次に、実施例により本発明をさらに詳細に説
明する。Next, the present invention will be described in more detail with reference to examples.
【００１８】実施例１ 鉱山排水から分離した緑藻を、鉱山排水（ｐＨ２．８）
１０００ｍｌ、ＫＮＯ3０〜５４４ｍｇ及びＫＨ2ＰＯ4
４．５ｍｇから成る培地を用い、２３℃、４５００ルッ
クス照度下で、かきまぜながら６日間培養したのち、培
養液を遠心分離機にかけて藻体を分離した。その結果培
養液から銅が消失し、藻体内に取り込まれたことが分か
った。図１にＫＮＯ3濃度と藻体中の銅濃度との関係を
グラフで示す。Example 1 Green algae separated from mine drainage were treated with mine drainage (pH 2.8).
1000 ml, KNO 3 0-544 mg and KH 2 PO 4
After culturing for 6 days under agitation of 4500 lux at 23 ° C. using a medium consisting of 4.5 mg, the culture solution was centrifuged to separate algal cells. As a result, it was found that copper disappeared from the culture solution and was taken into the alga. FIG. 1 is a graph showing the relationship between the KNO 3 concentration and the copper concentration in the algal cells.
【００１９】この図から分かるように、１リットル当
り、ＫＮＯ3量 ７２〜１４４ｍｇが最適であった。な
お、この場合、培養終了液のｐＨは４．５〜６．２であ
った。As can be seen from this figure, the optimum amount of KNO 3 was 72 to 144 mg per liter. In this case, the pH of the culture-finished solution was 4.5 to 6.2.
【００２０】実施例２ 鉱山排水から分離した緑藻を、鉱山排水（ｐＨ２．８）
１０００ｍｌ、ＫＮＯ3７２ｍｇ及びＫＨ2ＰＯ4 ０〜３
６ｍｇから成る培地を用い、２３℃、４５００ルックス
照度下で、かきまぜながら６日間培養したのち、培養液
を遠心分離機にかけて藻体を分離した。その結果、培養
液から銅が消失し、藻体内に取り込まれたことが分かっ
た。図２にＫＨ2ＰＯ4濃度と藻体中の銅濃度との関係を
グラフで示す。この図から分かるように、１リットル当
り、ＫＨ2ＰＯ4量 ４．５〜９ｍｇが最適であった。Example 2 Green algae separated from mine drainage were treated with mine drainage (pH 2.8).
1000 ml, KNO 3 72 mg and KH 2 PO 4 0-3
After culturing for 6 days under agitation of 4500 lux at 23 ° C. using 6 mg of medium, the culture solution was centrifuged to separate algal cells. As a result, it was found that copper disappeared from the culture solution and was taken into the alga. FIG. 2 is a graph showing the relationship between the KH 2 PO 4 concentration and the copper concentration in the algal cells. As can be seen from this figure, the optimum amount of KH 2 PO 4 was 4.5 to 9 mg per liter.
【００２１】実施例３ 鉱山排水から分離した緑藻を、鉱山排水（ｐＨ２．８）
１０００ｍｌ、ＫＮＯ3７２ｍｇ及びＫＨ2ＰＯ4 ４．５
ｍｇから成る培地を用い、２３℃、４５０〜８，０００
ルックスの照度下で、かきまぜながら６日間培養したの
ち、培養液を遠心分離機にかけて藻体を分離した。その
結果、培養液中から銅が消失し、藻体内に取り込まれた
ことが分かった。図３に照度と藻体中の銅濃度との関係
をグラフで示す。この図から分かるように、照度４５０
０ルックス近辺が最適であった。Example 3 Green algae separated from mine drainage were treated with mine drainage (pH 2.8).
1000 ml, KNO 3 72 mg and KH 2 PO 4 4.5
Using a medium consisting of mg, 23 ° C., 450 to 8,000
After culturing under illuminance of looks for 6 days while stirring, the culture solution was centrifuged to separate algal cells. As a result, it was found that copper disappeared from the culture solution and was taken into the alga body. FIG. 3 is a graph showing the relationship between the illuminance and the copper concentration in the algal cells. As you can see from this figure, the illuminance is 450
Around 0 lux was optimal.
【図１】 実施例１におけるＫＮＯ3濃度と藻体中の銅
濃度との関係を示すグラフ。FIG. 1 is a graph showing the relationship between the KNO 3 concentration and the copper concentration in alga bodies in Example 1.
【図２】 実施例２におけるＫＨ2ＰＯ4濃度と藻体中の
銅濃度との関係を示すグラフ。FIG. 2 is a graph showing the relationship between the KH 2 PO 4 concentration and the alga body copper concentration in Example 2.
【図３】 実施例３における照度と藻体中の銅濃度との
関係を示すグラフ。FIG. 3 is a graph showing the relationship between illuminance and copper concentration in alga bodies in Example 3.
Claims (4)
て、光照射下で緑藻類酸性藻を培養することにより、こ
の酸性藻の生体内に重金属イオンを取り込ませることを
特徴とする重金属イオンの除去方法。1. A method for removing heavy metal ions, comprising culturing green algae acidic alga under light irradiation in an acidic aqueous solution containing heavy metal ions to incorporate the heavy metal ions into the living body of the acidic alga.
共に酸性イオンを取り込ませ、酸性水溶液を中性化する
請求項１記載の重金属イオンの除去方法。2. The method for removing heavy metal ions according to claim 1, wherein the acidic aqueous solution is neutralized by incorporating the acidic ions together with the heavy metal ions into the living body of the green algae acidic algae.
水溶液１リットル当り、窒素元素７２〜１４４ｍｇ（Ｋ
ＮＯ3として）及びリン元素４．５〜９ｍｇ（ＫＨ2ＰＯ
4として）を添加して培養を行う請求項１又は２記載の
重金属イオンの除去方法。3. A nitrogen element of 72 to 144 mg (K) per liter of an acidic aqueous solution containing heavy metal ions as a nutrient source.
NO 3 ) and elemental phosphorus 4.5-9 mg (KH 2 PO
The method for removing heavy metal ions according to claim 1 or 2, wherein ( 4 ) is added and the culture is performed.
ル、コバルト、亜鉛又はヒ素イオンである請求項１、２
又は３記載の重金属イオンの除去方法。4. The heavy metal ion is a copper, cadmium, nickel, cobalt, zinc or arsenic ion.
Alternatively, the method for removing heavy metal ions according to 3 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4496095A JPH08206684A (en) | 1995-02-08 | 1995-02-08 | Heavy metal ion removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4496095A JPH08206684A (en) | 1995-02-08 | 1995-02-08 | Heavy metal ion removing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08206684A true JPH08206684A (en) | 1996-08-13 |
Family
ID=12706059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4496095A Pending JPH08206684A (en) | 1995-02-08 | 1995-02-08 | Heavy metal ion removing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08206684A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279445A (en) * | 2004-03-29 | 2005-10-13 | Univ Hiroshima | Waste liquid treatment method and treatment apparatus using protozoa |
| WO2006070885A1 (en) * | 2004-12-28 | 2006-07-06 | Nippon Sheet Glass Company, Limited | Method of detoxifying harmful compound |
| JP2011212624A (en) * | 2010-04-01 | 2011-10-27 | Toyota Motor Corp | Method for flocculation separation of algae |
| JP2013519369A (en) * | 2010-02-12 | 2013-05-30 | コミッサリア ア レネルジ アトミック エ オー エネルジ アルターネイティブス | A new radiation-resistant algal algae |
| KR101303946B1 (en) * | 2012-08-17 | 2013-09-05 | 한국과학기술연구원 | Pipes inserted article for culturing microalgae using mine drainage |
| CN103318986A (en) * | 2013-07-15 | 2013-09-25 | 湖南大学 | Method for removing divalent cadmium in wastewater by utilization of microcystis aeruginosa gel beads |
| CN105883956A (en) * | 2014-09-29 | 2016-08-24 | 广西科学院 | Method for removing heavy metal in water by using dried sargasso |
| CN107364971A (en) * | 2017-08-08 | 2017-11-21 | 浙江省海洋水产研究所 | A kind of method that copper excessive in seawater is handled using microalgae |
| JP2023137108A (en) * | 2022-03-17 | 2023-09-29 | 株式会社ノベルジェン | Information processing method, information processing system, and program |
| CN117720208A (en) * | 2023-12-26 | 2024-03-19 | 广东省农业科学院农业资源与环境研究所 | A method for removing heavy metals from water based on algae biofilm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927056A (en) * | 1972-07-07 | 1974-03-11 | ||
| JPS4939951A (en) * | 1972-08-25 | 1974-04-15 | ||
| JPH0283093A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Purification of industrial waste water utilizing single cell chlorophyceae of genus chlamydomonas |
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1995
- 1995-02-08 JP JP4496095A patent/JPH08206684A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4927056A (en) * | 1972-07-07 | 1974-03-11 | ||
| JPS4939951A (en) * | 1972-08-25 | 1974-04-15 | ||
| JPH0283093A (en) * | 1988-09-20 | 1990-03-23 | Fumio Onuki | Purification of industrial waste water utilizing single cell chlorophyceae of genus chlamydomonas |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005279445A (en) * | 2004-03-29 | 2005-10-13 | Univ Hiroshima | Waste liquid treatment method and treatment apparatus using protozoa |
| WO2006070885A1 (en) * | 2004-12-28 | 2006-07-06 | Nippon Sheet Glass Company, Limited | Method of detoxifying harmful compound |
| JP2013519369A (en) * | 2010-02-12 | 2013-05-30 | コミッサリア ア レネルジ アトミック エ オー エネルジ アルターネイティブス | A new radiation-resistant algal algae |
| JP2011212624A (en) * | 2010-04-01 | 2011-10-27 | Toyota Motor Corp | Method for flocculation separation of algae |
| WO2014027863A1 (en) * | 2012-08-17 | 2014-02-20 | 한국과학기술연구원 | Microalgae cultivation device having removable pipe and using mine drainage |
| KR101303946B1 (en) * | 2012-08-17 | 2013-09-05 | 한국과학기술연구원 | Pipes inserted article for culturing microalgae using mine drainage |
| CN103318986A (en) * | 2013-07-15 | 2013-09-25 | 湖南大学 | Method for removing divalent cadmium in wastewater by utilization of microcystis aeruginosa gel beads |
| CN103318986B (en) * | 2013-07-15 | 2014-05-07 | 湖南大学 | Method for removing divalent cadmium in wastewater by using Microcystis aeruginosa gel beads |
| CN105883956A (en) * | 2014-09-29 | 2016-08-24 | 广西科学院 | Method for removing heavy metal in water by using dried sargasso |
| CN107364971A (en) * | 2017-08-08 | 2017-11-21 | 浙江省海洋水产研究所 | A kind of method that copper excessive in seawater is handled using microalgae |
| CN107364971B (en) * | 2017-08-08 | 2020-04-07 | 浙江省海洋水产研究所 | Method for treating excessive copper in seawater by using microalgae |
| JP2023137108A (en) * | 2022-03-17 | 2023-09-29 | 株式会社ノベルジェン | Information processing method, information processing system, and program |
| CN117720208A (en) * | 2023-12-26 | 2024-03-19 | 广东省农业科学院农业资源与环境研究所 | A method for removing heavy metals from water based on algae biofilm |
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