Abstract:
본 발명은 제올라이트만을 이용한 염화염 폐기물(waste chloride salt)의 고정화 생성물 제조방법에 관한 것으로서, 보다 상세하게는 사용후 핵연료를 재처리하는 과정에서 발생하는 세슘(Cs), 스트론튬(Sr) 및 바륨(Ba) 등과 같은 알칼리 또는 알칼리 토금속족, 또는 세륨(Ce), 란타늄(La), 네오디늄(Nd), 이트륨(Y)과 같은 희토류계 방사성 핵종을 포함하는 염화염 폐기물과 제올라이트를 혼합하여 고정화 중간체를 제조하는 단계 및 상기 고정화 중간체를 Na계 소달라이트로 전이시키는 단계를 포함하는 제올라이트만을 이용한 염화염 폐기물의 고정화 생성물의 제조방법에 관한 것이다. 본 발명의 고정화 생성물은 보다 안정한 형태인 Na계 소달라이트로 되어 침출특성이 우수할 뿐만 아니라, 소달라이트로 전이를 시키는 과정에서 전이 촉진제 등을 첨가하지 않음으로써 그에 해당하는 양만큼의 최종 고화체(waste form)의 생성량을 줄임으로써 보다 효과적으로 염폐기물을 처리할 수 있게 한다. LiCl계 염폐기물, 제올라이트 NaA, 소달라이트, 고정화 생성물, 세슘, 스트론튬
Abstract:
본 발명은 제올라이트만을 이용한 염화염 폐기물(waste chloride salt)의 고정화 생성물 제조방법에 관한 것으로서, 보다 상세하게는 사용후 핵연료를 재처리하는 과정에서 발생하는 세슘(Cs), 스트론튬(Sr) 및 바륨(Ba) 등과 같은 알칼리 또는 알칼리 토금속족, 또는 세륨(Ce), 란타늄(La), 네오디늄(Nd), 이트륨(Y)과 같은 희토류계 방사성 핵종을 포함하는 염화염 폐기물과 제올라이트를 혼합하여 고정화 중간체를 제조하는 단계 및 상기 고정화 중간체를 Na계 소달라이트로 전이시키는 단계를 포함하는 제올라이트만을 이용한 염화염 폐기물의 고정화 생성물의 제조방법에 관한 것이다. 본 발명의 고정화 생성물은 보다 안정한 형태인 Na계 소달라이트로 되어 침출특성이 우수할 뿐만 아니라, 소달라이트로 전이를 시키는 과정에서 전이 촉진제 등을 첨가하지 않음으로써 그에 해당하는 양만큼의 최종 고화체(waste form)의 생성량을 줄임으로써 보다 효과적으로 염폐기물을 처리할 수 있게 한다. LiCl계 염폐기물, 제올라이트 NaA, 소달라이트, 고정화 생성물, 세슘, 스트론튬
Abstract:
본 발명은 고온 용융염용 기준전극 및 그 제조 방법에 관한 것으로, 보다 상세하게는 알루미나 관(10)과 그 내부에 은선-염화은-용융염으로 구성된 고온 용융염용 기준전극에 있어서, 상기 기준 전극의 알루미나 관(10) 한쪽 개구부에 다공성 세라믹 층(20)이 형성된 것임을 특징으로 하는 고온 용융염용 기준전극 및 그 제조방법에 대한 것으로서, 본 발명에 의하면 물리적 또는 열적 충격에 대한 내구성 및 내부식성이 우수할 뿐만 아니라 고온 용융염에서의 재현성 및 전위 특성이 종래의 파이렉스형 기준전극보다 우수하고 안정된 이점을 갖는다. 기준전극, 다공성 세라믹, 은선, 염화은, 용융염
Abstract:
A method for improving electrosorption efficiency of uranium-containing liquid waste is provided to process the sludge liquid waste before the electrosorption process by separating a chemical salt component by a liquid-solid filtering process using a filter and a precipitator. An irresoluble solution contains small amount of radioactive uranium and high concentration chemical salts, such as NH4NO3, NaNO3, Ca(NO3)2, CaCO3. The chemical salts are separated through a liquid-solid separation process, which includes more than one of a filter and a precipitator, such that electrosorption efficiency of the uranium is enhanced. In the liquid-solid separation process, either the filter or the precipitator is used alone, or the filter is used after the precipitator. The liquid-solid separation process uses one selected from the group of a filter paper, a filter membrane, and a filter member.
Abstract:
Disclosed is a method and device for collecting particulate contaminants removed using a CO 2 decontamination medium from an early step of a decontamination process. The device removes particulate contaminants from a contaminated subject by a decontamination stream, and simultaneously forms another stream for collecting such contaminants into a collecting filter, thus preventing such contaminants from diffusing into the atmosphere. The device forms streams between the nozzles and the surface of the contaminated subject to readily move the nozzles along the surface of the subject without frictional resistance, to reduce the sense of fatigue of the operator. The method and device are advantageous in that when the device is readily used with a conventional CO 2 blasting decontamination unit to collect particulate contaminants, removal of particulate contaminants from a contaminated subject and collection of particulate contaminants contained in the decontamination stream are simultaneously performed, also allowing compressed gas blasted through air curtain blasting nozzles to prevent contaminated gas from diffusing into the atmosphere.
Abstract translation:公开了一种用于从去污过程的早期步骤收集使用CO SUB SUB去污介质去除的颗粒污染物的方法和设备。 该装置通过净化流从受污染的对象中去除颗粒污染物,并且同时形成另一个流,用于将这些污染物收集到收集过滤器中,从而防止这些污染物扩散到大气中。 该装置在喷嘴和受污染物表面之间形成流动物,以便容易地沿着物体表面移动喷嘴而没有摩擦阻力,从而减少操作者的疲劳感。 该方法和装置的优点在于,当该装置容易与传统的CO 2 SUB爆炸净化单元一起使用以收集颗粒污染物,从受污染的对象中去除颗粒污染物和收集包含在污染物中的颗粒污染物 同时执行净化流,还允许通过气幕喷射喷嘴喷射压缩气体以防止污染气体扩散到大气中。
Abstract:
PURPOSE: Provided is a method for recovering high pure cobalt in a high degree of recovery from waste electrodes generated from a process for producing lithium ion secondary batteries or wasted after using. CONSTITUTION: The method comprises the steps of: injecting LiCoO2 powder obtained from the waste electrodes into an inorganic acid containing hydrogen peroxide and dissolving and filtering, wherein the inorganic acid is hydrochloric acid or sulfuric acid; electrolyzing the filtrate to recover the cobalt electrodeposited on an anode. And the LiCoO2 powder is obtained by heating the waste electrodes at 400-600deg.C under non-oxidative atmosphere.
Abstract:
PURPOSE: A pneumatic type multistage solvent extracting apparatus is provided to extract the metallic ions by mixing water soluble phase with organic phase using air without using of an impeller in a mixing tank in the process of separating and refining the metal ions by extracting metal ions dissolved in a solution using nonmixing solution. CONSTITUTION: The pneumatic type multistage solvent extracting apparatus comprises an air suction and exhaustion distribution pipe(4) which is connected to an air suction and exhaustion unit to uniformly distribute air during suction and exhaustion of air; a mixing probe(6) which is connected to the air suction and exhaustion distribution pipe(4) to exhaust or suck an aqueous solution; a mixer and settler housing(8) in which a plural pairs of mixers(29) where the mixing probe(6) is vertically installed and settlers(58) where organic phase and water soluble phase are charged in; and an air pulse generator(10) which is installed at one side of the mixer and settler housing(8) to generate air pulse, wherein the mixing probe(6) comprises a suction and exhaustion port(18), an air chamber(20), and a nozzle head part(22) consisting of an upper nozzle, a lower nozzle and a guide groove, and the mixer and settler housing(8) comprises a water soluble phase port, first, third, fifth and seventh end parts consisting of mixers and settlers, water soluble phase projections, second, fourth, sixth and eighth end parts consisting of mixers and settlers, organic phase projections, and an organic phase port.
Abstract:
PURPOSE: A high performance ion exchange resin with double structured functional groups and its preparation method are provided, to increase the concentration of uranium ions on surface and to improve the adsorbing power of uranium, thereby enhancing the recovery rate or soluble uranium ions. CONSTITUTION: The high performance ion exchange resin has a double structured functional groups where an ion-selective secondary functional groups are introduced on the surface of a strong ionic exchange resin. Preferably the strong ionic exchange resin contains sulfone groups or tertiary amine groups in molecule. The method comprises the steps of radiating the surface of strong ionic exchange resin to form radicals on the surface; and introducing secondary functional groups coordinate bonding with a uranium ion into the strong ionic exchange resin. Preferably the secondary function groups are selected from the group consisting of an amidoxime group and a carboxyl group.
Abstract:
PURPOSE: A pneumatic type multistage solvent extracting apparatus is provided to extract the metallic ions by mixing water soluble phase with organic phase using air without using of an impeller in a mixing tank in the process of separating and refining the metal ions by extracting metal ions dissolved in a solution using nonmixing solution. CONSTITUTION: The pneumatic type multistage solvent extracting apparatus comprises an air suction and exhaustion distribution pipe(4) which is connected to an air suction and exhaustion unit to uniformly distribute air during suction and exhaustion of air; a mixing probe(6) which is connected to the air suction and exhaustion distribution pipe(4) to exhaust or suck an aqueous solution; a mixer and settler housing(8) in which a plural pairs of mixers(29) where the mixing probe(6) is vertically installed and settlers(58) where organic phase and water soluble phase are charged in; and an air pulse generator(10) which is installed at one side of the mixer and settler housing(8) to generate air pulse, wherein the mixing probe(6) comprises a suction and exhaustion port(18), an air chamber(20), and a nozzle head part(22) consisting of an upper nozzle, a lower nozzle and a guide groove, and the mixer and settler housing(8) comprises a water soluble phase port, first, third, fifth and seventh end parts consisting of mixers and settlers, water soluble phase projections, second, fourth, sixth and eighth end parts consisting of mixers and settlers, organic phase projections, and an organic phase port.
Abstract:
PURPOSE: The coupling calix(4)arene azacrown ether derivatives capable of selectively adsorbing potassium ions are provided, therefore the derivatives can be used for the measurement of a potassium concentration in serum and their chelation with specific metal ions can be easily detected with the naked eye. CONSTITUTION: The coupling calix(4)arene azacrown ether derivatives capable of selectively adsorbing potassium ions are represented by last formula, in which R is C0 to C10 linear alkyl; R' is nitro, cyano or C1 to C3 ester; and n is an integer of 0 to 3, preferably R is propyl, R' is nitro, and n is 1. The method for producing the coupling calix(4)arene azacrown ether derivatives comprises the steps of: reacting the compound of formula(I) with the tosylate of formula(II) in the presence of CS2CO3 to produce tetraalkylated calix(4)arene compound of formula(III); cyclization reacting the compound of formula(III) to produce N-tosylated calix(4)arene azacrown ether compound of formula(IV); deprotection reacting the compound of formula(IV) to produce calix94)arene azacrown ether compound of formula(V); and reacting the compound of formula(V) with a coupling compound in solvent in the presence of base to produce the title compound of last formula.