US20170253501A1 - Agricultural electrolyzed water-generating apparatus and agricultural electrolyzed water - Google Patents

Agricultural electrolyzed water-generating apparatus and agricultural electrolyzed water Download PDF

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Publication number
US20170253501A1
US20170253501A1 US15/506,086 US201515506086A US2017253501A1 US 20170253501 A1 US20170253501 A1 US 20170253501A1 US 201515506086 A US201515506086 A US 201515506086A US 2017253501 A1 US2017253501 A1 US 2017253501A1
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US
United States
Prior art keywords
electrolyzed water
water
electrode chamber
agricultural
hydrogen
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Abandoned
Application number
US15/506,086
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English (en)
Inventor
Katsumi Ishikawa
Daiji AMENOMORI
Yasuomi HAMAUZU
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Kochi University NUC
Nihon Trim Co Ltd
Original Assignee
Kochi University NUC
Nihon Trim Co Ltd
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Assigned to NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY, NIHON TRIM CO., LTD. reassignment NATIONAL UNIVERSITY CORPORATION KOCHI UNIVERSITY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMENOMORI, Daiji, HAMAUZU, Yasuomi, ISHIKAWA, KATSUMI
Publication of US20170253501A1 publication Critical patent/US20170253501A1/en
Abandoned legal-status Critical Current

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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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G31/00—Soilless cultivation, e.g. hydroponics
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/46115—Electrolytic cell with membranes or diaphragms
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/46—Apparatus for electrochemical processes
    • C02F2201/461—Electrolysis apparatus
    • C02F2201/46105—Details relating to the electrolytic devices
    • C02F2201/4612—Controlling or monitoring
    • C02F2201/46125—Electrical variables
    • C02F2201/4614—Current
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

Definitions

  • the present invention relates to an agricultural electrolyzed water-generating apparatus which electrolyzes water to generate agricultural electrolyzed water.
  • the present invention also relates to the agricultural electrolyzed water.
  • a proposed use of this functional water is for agricultural water containing metal chelate salt including such metals as iron and manganese necessary for plant cultivation (see Japanese Unexamined Patent Publication No. 2002-320416, for example).
  • the functional water disclosed in Japanese Unexamined Patent Publication No. 2002-320416 is produced through a chemical process causing a particular metal to dissolve in the water, and thus is effective in a healthy rhizosphere; in a rhizosphere out of balance, however, this functional water cannot achieve its expected effects.
  • the rhizoplane is negatively charged, and substances travel through the rhizosphere mainly as charged ions.
  • use of positively charged water may curb an increase in pH levels and reduce pH-related damage.
  • the positively charged water improves water quality by enhancing hydrogen bonds and thus makes the root stronger.
  • the use of electrically processed water would facilitate the maintenance of a healthy rhizosphere.
  • the present invention is conceived in view of the above issues, and attempts to provide an agricultural electrolyzed water generating apparatus which may generate hydrogen-containing electrolyzed water usable as agricultural electrolyzed water useful for plant growth.
  • the present invention also attempts to provide the agricultural electrolyzed water.
  • an agricultural electrolyzed water generating apparatus includes: an electrolysis tank containing a first electrode chamber having a cathode, a second electrode chamber having an anode, and a separating membrane separating the first electrode chamber and the second electrode chamber from each other; a first water inlet path connected to the first electrode chamber to supply the first electrode chamber with raw water from outside; a second water inlet path connected to the second electrode chamber to supply the second electrode chamber with the raw water from outside; a first water outlet path connected to the first electrode chamber, and carrying to outside hydrogen-containing electrolyzed water generated by electrolysis in the first electrode chamber; a second water outlet path connected to the second electrode chamber, and carrying to outside electrolyzed acidic water generated by the electrolysis in the second electrode chamber; and a charge amount adjuster connected to the electrolysis tank for adjusting, during the electrolysis, an amount of electrical charge to be provided to the hydrogen-containing electrolyzed water, wherein the charge amount adjuster adjusts the amount of electrical charge per unit quantity of the generated hydrogen
  • the amount of electrical charge per unit quantity of the obtained hydrogen-containing electrolyzed water is successfully adjusted, which enables electrically controlling the rhizosphere environment of plants and obtaining agricultural electrolyzed water (hydrogen-containing electrolyzed water) useful for plant growth.
  • the present invention allows to generate agricultural electrolyzed water useful for plant growth.
  • FIG. 1 illustrates an agricultural electrolyzed water generating apparatus according to an embodiment of the present invention.
  • FIG. 2 is a flowchart depicting how a charge amount adjuster according to the embodiment of the present invention adjusts the amount of electrical charge.
  • FIG. 1 illustrates an agricultural electrolyzed water generating apparatus (hereinafter referred to as “electrolyzed water generating apparatus”) according to the embodiment of the present invention.
  • An electrolyzed water generating apparatus 1 electrolyzes raw water purified by a water purifier to generate agricultural water containing dissolved hydrogen for agricultural use (agricultural electrolyzed water).
  • the electrolyzed water generating apparatus 1 includes an electrolysis tank D.
  • This electrolysis tank D contains: a separating membrane Sp shaped into a thin sheet; a first electrode chamber (a cathode chamber) Da; and a second electrode chamber (an anode chamber) Db.
  • the first chamber Da and the second chamber Db are separated from each other by the separating membrane Sp.
  • This separating membrane Sp is a thin sheet formed of a material permeable to ions generated when water is electrolyzed.
  • the first electrode chamber Da is provided with a cathode 6 a acting as a first electrode
  • the second electrode chamber Db is provided with an anode 6 b acting as a second electrode.
  • the cathode 6 a and the anode electrode 6 b face each other across the separating membrane Sp.
  • the cathode 6 a and the anode 6 b may be made of any given material.
  • An example of such materials is titan coated with platinum or iridium. In view of the electrolytic endurance of the electrodes, it is beneficial to use titan coated with platinum iridium.
  • the electrolyzed water generating apparatus 1 further includes: a first water inlet path 4 a connected to the first electrode chamber Da; and a second water inlet path 4 b connected to the second electrode chamber Db.
  • the first water inlet path 4 a and the second water inlet path 4 b respectively supply the first electrode chamber Da and the second electrode chamber Db with raw water (raw water purified by the water purifier) from outside.
  • the electrolyzed water generating apparatus 1 includes: a first water outlet path 7 a connected to the first electrode chamber Da; and a second water outlet path 7 b connected to the second electrode chamber Db.
  • the first water outlet path 7 a carries, to outside, hydrogen-containing electrolyzed water (regenerated water) generated by electrolysis in the first electrode chamber Da
  • the second water outlet path 7 b carries, to outside, electrolyzed acidic water generated by electrolysis in the second electrode chamber Db.
  • the hydrogen-containing electrolyzed water generated in the first electrode chamber Da is ejected through the first water outlet path 7 a, and used as agricultural electrolyzed water.
  • the electrolyzed acidic water generated by electrolysis at the anode 6 b is ejected through the second water outlet path 7 b.
  • a feature of the embodiment is that, when the electrolysis is performed using the electrolyzed water generating apparatus 1 , an electrolytic current is controlled to adjust an amount of electrical charge [C/L] per unit quantity of the generated hydrogen-containing electrolyzed water. This procedure generates agricultural electrolyzed water (hydrogen-containing electrolyzed water) which is useful for plant growth.
  • the “amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water” is the amount of electrical charge applied to one liter of water traveling, during the electrolysis, through an inside of the electrolyzed water generating apparatus 1 including the electrolysis tank D. Note that the amount of electrical charge may be calculated according to the following Equation (1):
  • Equation (1) “C” is an amount of electrical charge, “I” is an electrolytic current, and “s” is a time period (in seconds) required for one liter of water to travel through the inside of the electrolyzed water generating apparatus 1 including the electrolysis tank D.
  • the electrolyzed water generating apparatus 1 of the embodiment includes a charge amount adjuster 10 for adjusting, during the electrolysis, the amount of electrical charge to be provided to the hydrogen-containing electrolyzed water.
  • the charge amount adjuster 10 includes: an electrolytic current determiner 11 determining an electrolytic current during the electrolysis performed by the electrolyzed water generating apparatus 1 ; an electrolytic current supplier 12 connected to the electrolytic current determiner 11 and the electrolysis tank D, and supplying the electrolysis tank D with the electrolytic current; and a storage device 13 connected to the electrolytic current determiner 11 to store data indicating a target amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water.
  • FIG. 2 is a flowchart depicting how the charge amount adjuster 10 according to the embodiment of the present invention adjusts the amount of electrical charge.
  • the electrolytic current determiner 11 reads data stored in the storage device 13 and indicating a target amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water (Step S 1 ).
  • the amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water beneficially ranges from 8 C/L to 300 C/L, more beneficially from 37.5 C/L to 180 C/L, and particularly beneficially from 42 C/L to 73.5 C/L.
  • the hydrogen-containing electrolyzed water beneficially has a pH ranging from 7.5 to 9.9, more beneficially from 8.0 to 9.8, and particularly beneficially from 8.5 to 9.5.
  • the electrolytic current determiner 11 determines an electrolytic current for the electrolysis to be performed in the electrolysis tank D so that the electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water reaches the target amount (Step S 2 ). Then, the electrolytic current determiner 11 transmits a signal, on the determined electrolytic current, to the electrolytic current supplier 12 supplying the electrolysis tank D with the electrolytic current (Step S 3 ).
  • the electrolytic current supplier 12 supplies the electrolysis tank D with the electrolytic current based on the transmitted signal.
  • the electrolysis tank D electrolyzes raw water to generate hydrogen-containing electrolyzed water to be used as agricultural electrolyzed water, so that the electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water reaches the target amount (Step S 4 ).
  • the electrolytic current is controlled to generate the hydrogen-containing electrolyzed water having a desired amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water.
  • the generated hydrogen-containing electrolyzed water attracts cations in the first electrode chamber Da, and is charged positively.
  • Such hydrogen-containing electrolyzed water has a function to reduce dissociation of an oxidizing agent around the rhizosphere. This function successfully reduces oxidization of cell walls of plant roots negatively charged by a carboxyl group, and of cell membranes forming a lipid bilayer made of phosphatide.
  • the positively-charged hydrogen-containing electrolyzed water has the hydrogen bond enhanced and the water quality improved.
  • the agricultural electrolyzed water (the hydrogen-containing electrolyzed water) obtained may make the roots biologically more active and beneficially affect the plant growth.
  • the hydrogen-containing electrolyzed water is generated by galvanostatic electrolysis through the control of the electrolytic current; however, the hydrogen-containing electrolyzed water may as well be generated by controlled potential electrolysis through the control of an electrolytic voltage as long as it is possible to generate the hydrogen-containing electrolyzed water having a desired amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water.
  • the electrolyzed water generating apparatus 1 illustrated in FIG. 1 was used to generate hydrogen-containing electrolyzed water for use as agricultural electrolyzed water.
  • platinum iridium plates having an electrode surface area of 77 cm2 were used as an anode and a cathode.
  • a polytetrafluoroethylene (PTFE) hydrophilic membrane was used as a separating membrane.
  • Raw water, purified by a water purifier was galvanostatically electrolyzed for approximately three seconds with a direct current (an electrolytic current of 1.4 A) to become hydrogen-containing electrolyzed water, so that the amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water was 42 C/L.
  • the hydrogen-containing electrolyzed water had a pH of 8.54.
  • Hydrogen-containing electrolyzed water was generated in a similar manner as described in Example 1 except that the raw water was galvanostatically electrolyzed for approximately two seconds with a direct current (an electrolytic current of 2.45 A), so that the amount of electrical charge per unit quantity of the generated hydrogen-containing electrolyzed water was 44 C/L. Note that the hydrogen-containing electrolyzed water had a pH of 9.00.
  • a culture solution containing the hydrogen-containing electrolyzed water generated in Example 2 was used to cultivate Japanese mustard spinach (35 bunches) employing the nutrient flow technique (NFT).
  • the culture solution was prepared as follows: 225 g of Otsuka House Type 1 fertilizer and 150 g of Otsuka House Type 2 fertilizer were dissolved in 300 liters of the generated hydrogen-containing electrolyzed water, and Otsuka House A Shoho Hyojyun Baiyoueki culture solution was diluted in double the amount of the hydrogen-containing electrolyzed water.
  • Table 1 shows the ingredient composition of Otsuka House A Shoho Hyojyun Baiyoueki culture solution.
  • the spinach was cultivated for 20 days under natural sunlight since planting. Furthermore, the culture solution was replaced every six days since planting.
  • tap water was used instead of the hydrogen-containing electrolyzed water generated in Example 2 for the cultivation of Japanese mustard spinach under the same conditions.
  • a culture solution containing the hydrogen-containing electrolyzed water generated in Example 2 was used to cultivate basil (35 bunches) employing the NFT.
  • the culture solution used here was the same culture solution as that used for the cultivation of the above Japanese mustard spinach. Moreover, the basil was cultivated for 25 days under natural sunlight since planting. Furthermore, the culture solution was replaced every six days since planting.
  • Example 2 As a comparative example, tap water was used instead of the hydrogen-containing electrolyzed water generated in Example 2, and the basil plants were cultivated under the same conditions. Twenty five days after planting, the number of leaves, fresh weight (g/bunch) of a shoot system (parts above the ground, such as stems and leaves), and fresh weight (g/bunch) of a root system (parts below the ground, such as roots) of each basil bunch were measured, and an average was calculated for each of the parts measured. Table 3 shows the calculation results.
  • Table 2 shows that, in the example employing the culture solution prepared from the hydrogen-containing electrolyzed water, the spinach plants exhibit an average plant height and weight of the shoot system and the root system which exceed that in the example employing tap water.
  • Table 3 shows that in the example employing the culture solution prepared from the hydrogen-containing electrolyzed water, the basil plants exhibit an average leaf number and weight of the shoot system and the root system which exceed that in the example employing tap water.
  • the hydrogen-containing electrolyzed water generated with the amount of electrical charge per unit quantity of the water adjusted through the control of the electrolytic current, may be employed as agricultural electrolyzed water useful for plant growth.
  • the present invention is useful for an agricultural electrolyzed water generating apparatus which electrolyzes water to generate agricultural electrolyzed water.
  • the present invention is also useful for generating the agricultural electrolyzed water.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Environmental Sciences (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Cultivation Of Plants (AREA)
  • Hydroponics (AREA)
US15/506,086 2014-09-01 2015-08-26 Agricultural electrolyzed water-generating apparatus and agricultural electrolyzed water Abandoned US20170253501A1 (en)

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JP2014177031 2014-09-01
JP2014-177031 2014-09-01
PCT/JP2015/004304 WO2016035288A1 (ja) 2014-09-01 2015-08-26 農業用電解水生成装置および農業用電解水

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JP6169762B1 (ja) * 2016-08-02 2017-07-26 ＭｉＺ株式会社 水素水の生成方法
JP6420870B1 (ja) * 2017-06-08 2018-11-07 株式会社日本トリム 電解水生成装置
KR102100145B1 (ko) * 2018-04-06 2020-04-13 석현철 수소수를 활용한 새싹채소 재배기
US11297975B2 (en) * 2019-05-14 2022-04-12 Lg Electronics Inc. Hydrogen water generator
JP7466898B2 (ja) * 2020-05-22 2024-04-15 国立大学法人島根大学 電気分解装置及びそれを用いた植物工場
KR102648940B1 (ko) * 2020-12-23 2024-03-20 엘지전자 주식회사 식물재배장치 및 그 제어방법

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EP3190091A4 (en) 2018-05-23
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EP3190091A1 (en) 2017-07-12
CN106604895B (zh) 2020-08-04
KR102408368B1 (ko) 2022-06-10
KR20170044744A (ko) 2017-04-25
EP3190091B1 (en) 2020-05-13
JPWO2016035288A1 (ja) 2017-07-13
WO2016035288A1 (ja) 2016-03-10
US20200189939A1 (en) 2020-06-18
US11279635B2 (en) 2022-03-22

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