Lub hauv paus rau phau ntawv
Electrochemical Technologies tau tshwm sim liPob Kws TeebRau kev nyuaj thoob ntiaj teb kev nyuaj, ncua kev kho dej huv lub nroog, dej hiav txwv uas muaj cua txias, thiab cov dej txias ntau lawm. Cov haum rau cov khoom sivElectrocatalyticSticNtawm lub electrode -} electrolyte interface rau kev ua paug rau cov kuab paug, lossis tiv thaiv kev luam tawm. Txawm li cas los xij, nce ntxiv dej matrices {2} Tus cwj pwm los ntawm huab kev ua kom huv, thiab taug txoj kev siv hluav taws xob, thiab khi tawm cov khoom tsis huv {}}}}kev xav tsis tauOn cov ntaub ntawv electrode. Kev siv hluav taws xob ruaj khov me me (DSAs), thaum sawv tawm tsam hauv chlor {{alkali electrolysis, tam sim no ntsib kev ua haujlwm hauv kev ua haujlwm tau zoo, thiab kav ntev nyob hauv cov noMultifaceted kev khiav hauj lwmCov. Qhov kev tshuaj xyuas no tshuaj xyuas covCov Kev Sib Tw Tseem CeebKev kho cov khoom siv hluav taws xob ntawm plaub qhov kev siv hluav taws xob, hluav taws xob hluav taws xob rau cov tshuab hluav taws xob, thiab kev nkag siab mus rau tom ntej no-}}}}} Nplooj ntawv mus rau lwm qhov.
1. Tub ntxhais hluav taws xob yuav tsum muaj nyob rau hauv kev kho dej niaj hnub
Electrochemical dej kho tshuab hloov hluav taws xob lub zog hauv cov tshuaj lom neeg uas tsis muaj kuab paug tsis muaj tshuaj ntxiv. Lawv cov txiaj ntsig suav nrogKev ua haujlwm hloov pauv, Minimal Sludge Ntau Lawm, thiabntawm -}} xav oxidant tiamCov. Cuaj kaum, heterogeneous dej matrices yaumCov Qauv Teeb Meem Yuav TsumNtawm Electrodes:
Kev sib koom ntau: Cov electrodes yuav tsum ua ke pab txhawb oxidation, txo, roj evolute, thiab txheej txheem sib cais ntawm lub cev. Piv txwv li, electrochemical membranee bioractors (cia li ua rau muaj kev sib raug zoo, thiab lub zog hluav taws xob, xav kom cov organic fouling thaum tswj cov organic fuffing thaum tswj cov kev ua haujlwm siab 1.
High Efficiency & Lub Zog Tsawg: Cov kev sib tw hom phiaj (piv txwv li, cov xim paug, cov tshuaj tsw qab pololution) yuav tsum tau tawm cov kev hloov pauv sab (piv txwv li, oxygen evolution). Hauv dej wastewater muaj<100 ppm organics, the Oxygen Evolution Revolution (Oer)Dominates vim kev ua tau zoo, txo cov kev ua tau zoo coulomiciency thiab nce lub zog hluav taws xob los ntawm 30-70% 8.
Durability nyob rau hauv huab cua: Electrodes ntsib cov acidic / alkaline hloov, chloride - xidants nyiam hydroxyl radicals (• Oh). Graphite anodes ely sai sai, thaum coj dioxide (PBO₂) anodes kev txom nyem los ntawm kev sib deev ntawm kev ua haujlwm ntev 8.
RabELLIALS: Kho cov dej ntws nyuaj uas yuav tsum tau tsom cov kab mob tshwj xeeb tsis muaj kev phom sij. Piv txwv li, kev txo qis nitrate yuav tsum tau cog qoob loo n₂, tsis yog tsis muaj los yog nh₄⁺, thaum cov orgics oxidation yuav tsum zam cov oloride {}}}}} muaj dej 7.
Cov ntaub ntawv hauv taw tes: Electrochemical Advanced oxidation cov txheej txheem (eagots) vam khom {}} boron {}} doped pob zeb diamond, BDD). Txawm li cas los xij, BDD tus nqi siab ($ 5,000-10,000 / m²) thiab ntxim nyiam rau pitting corrosion nyob rau hauv dej qab ntsev txwv cov ntsuas phoo scalability 4.
2. Electrochemical chlorine tiam: Dej hiav txwv dej hiav txwv
Dej hiav txwv compresswology ua rau sodium hypochlorite (nyob rau hauv situ) Rau biofouling tswj nyob rau hauv ntug hiav txwv fais fab nroj tsuag, nkoj, thiab desalination chaw. Tsis zoo li concentrated brine (250-300 g / l nacl) hauv chlor {}} Alkali hlwb, seawaterDilute salinity(≈30 g / l nacl),ze - n} negutral pha, thiab muaj kev kub siabCa²⁺ / Mg²⁺ / So₄²⁻Sib tw cov tshuaj uas muaj kev sib tw DSA:
Kev sib tw: At neutral pH, the standard chlorine evolution reaction (CER: 2Cl⁻ → Cl₂ + 2e⁻) requires potentials >1.36 V/SHE, dangerously close to OER (1.23 V/SHE). CER selectivity drops from >95% hauv brine rau<60% in seawater due to OER dominance 9.
Cov kauj cim tsim: Mg²⁺ thiab noj tshuaj tiv thaiv ohodically generated Oh⁻ los ua mg (Oh) ₂ / caco₃ nplai ntawm kev ua yuam kev thiab cov quav mis, ua kom muaj zog ntawm cov chaw.
Corrosion & Electrode Deactivation: Iridium (iR) {- lossis ruthenium (ru)}}}} Ib txhij, sulfate oxidation tsim cov persulfate (s₂o₈²⁻), uas tawm tsam oxide oxide txheej 9.
Cov Khoom Siv Kev Tsim Kho:
Tsis ntev los no ua haujlwm ntawmoxygen - txaus siab mooent moo-}- ta₂o₅ anodesua kom pom kev sib tsoo cerplectivity. Lub mooent txheej qhiaCov pa tawmQhov ntawd txo qis kev sib cav sib ceg rau cov pa oxidation thaum raug mob oer. Cov ntsiab lus tseem ceeb muaj:
Cerjicency ntawm 90.0% hauv hluavtaws hluavtaws (0.6 m nacl, pH 6.88)
Kev hla dhau los ntawm 50% (97 MV ntawm 10 ma / cmo)
Tsawg kawg ntawm kev ntsuas hluav taws xob vim muaj electrostatic rov hais tawm ntawm Ce²⁺ 5.
Kev tsim:
Ion {{0} mak} PAJE MEM CREDSOLYZERS (piv txwv li, Daim duab . 1) cais tawm (anode), txhim kho kev nyab xeeb thiab kev ua tau zoo. Nrog optimized pretreatment (ultrafiltration + nanofililtration) thiab tsis sib xws (tam sim no} {}}}} efficiency tshaj 80% ntawm<6 V cell voltage 9.
Cov lus 1: Kev ua tau zoo ntawm cov khoom siv electrode hauv seaswater electrolysis
| Hom elenceg | Kev ua haujlwm (%) | Tshaj (MV) | Ruaj khov (h) | Txwv QAIB TSEEM |
|---|---|---|---|---|
| Ruo - iro} iro₂ (DSA Txheem DSA) | 60–75 | 220–280 | >5,000 | Tsawg Xaiv los ntawm nruab nrab Ph |
| Mooₓ @ iro₂ - ta₂o₅ | 90.0 | 97 | 1,000* | Ntev -} cov ntaub ntawv xav tau |
| Pt / ti | 40–65 | 300–400 | <500 | Tus nqi siab; Sulfate corrosion |
| BDD | 85–93 | 50–90 | 2,000 | Pitting nyob rau hauv high chloride |
3. Electrochemical descaling nyob rau hauv lub tshuab txias txias: ntsuas qhov ua tau zoo thiab electrode ntev
Muaj cov cua txias kev txom nyem los ntawmMineral Indemoos(Caco₃, Caso₄), uas txo qhov kev hloov kho tshav kub los ntawm 20-40% thiab nce hluav taws xob ntau. Electrochemical descaling precipitates hardness ions (ca ²⁺ / mg²⁺) ntawm Anchlic Alkaline tiam:
Cathode: 2H₂o + 2 → 2oh⁻ + h₂
Anode: 2Cl⁻ → clj + 2 → (lossis h₂o ½ ½+ 2+ 2})
OH⁻ Aud Lwm yam hauv zos, ua rau muaj dej num rau ntawm cov tib neeg. Thaum cov zaub mov - dawb, cov txheej txheem no feem ntau cov roj av:
Cathode fouling: Precipitates insulation cathere, uas yuav tsum tau nquag nquag / acid tu. Calcite (CACO₃) cov ntaub ntawv ntom, cov txheej txheem kos duab, thaum aragonite {}} tsis muaj zog tab sis xav tau kev mob tshwj xeeb 3.10.
Anode corrosion: Chloride lossis sulfate electrolytes corrode corrode sib xyaw hlau anodes. Txawm tias DSA Anodes depade thaum anodic o₂ lossis cl a evolution 10.
Lub Zog Rau Kev Rau Zog: High overpotentials for OER and poor precipitate conductivity increase energy use. At 250 A/m², Ca²⁺ removal reaches only 46.3% with specific energy >119 kwh / kg caco₃ 3.
Electrode Cov Tswv Yim Rau Cov Tswv Yim:
Pulsed Electrodegosition Cathodes: Microstructured ni lossis stainless hlau qhov chaw ua haujlwm txhawb nqa aragonite ntau tshaj li calcite, easing tshem tawm.
Catalytic DSAS: Ti / iro₂ Anodes minimize Oer overpotential, txo cov xovtooj ntawm tes los ntawm 30% piv rau PT 10.
Kev tsim: Kaw electrode txuas (2-5 mm) txhim kho kev ua tau zoo tab sis pheej hmoo luv- puag ncig los ntawm kev ntsuas nplai. Rov qab cov hauj lwm polarity ua haujlwm ib ntus ploj mus pov tseg tab sis nrawm anode hnav 10.
4. Ua ntej nthuav dav oxidation (AEO) rau cov khoom siv pov tseg: electrode txwv
AEO tsim tawm cov oxidants (• Oh, clr₂, h₂o₂) rau mineralize recalcityrrant cov organics (piv txwv li, tshuaj, tshuaj tua kab). Ob qho xwm txheej tseem ceeb muaj:
Ncaj qha oxidation: Organics Adsorb mus rau Anode nto thiab yauv mus sab nraud hluav taws xob.
Indirect oxidation: Electro -}}}, cov tshuaj chlorine (piv txwv li cov chlorine, • HEH) hnov mob nrog cov organic.
Electrode Nyuaj:
Fouling los ntawm organic polymers: Phenolic tebchaw polymerize mus rau hauv cov yeeb yaj kiab insulating ntawm anode nto. Hauv phenol -} muaj cov neeg khib nyiab, ib qho 30% poob hauv cov haujlwm tsis pub dhau 10 h 8.
Xaiv vs. mineralization pauv -} tawm: BDD anodes ua tiav cov mineralize cov organics rau kev sib koom tab sis haus cov zog ntau tshaj. DSA Anodes xaiv cov khoom siv uas muaj cov koom haum tab sis khaws cov nruab nrab uas ua cov chaw nres.
Complex pov tseg matrices: Chloride enables zog ua cov chlorine tsim tab sis pheej hmoo chlorinated cuproducts. Lub caij no, Carbonate / Bicarbonate Scavenge • Oh, txo kev ua tau zoo 4.
Kev Kawm Kev Kawm - vaudreuil - dorion Wewp:
A pilot AEO system (18.9 L/min flow) using mixed metal oxide (MMO) anodes achieved 79–98% removal of nine pharmaceuticals. Mineralization reached 49 ± 2%, but energy costs rose significantly when treating high-COD (>500 mg / l) kwj deg. Tshaj tawm - kev kho, anode erosion thiab calcium sulfate deposition yuav tsum tau saib xyuas txhua lub lim tiam txij nkawm 4.
Tawm kev daws:
Electrochemically Hloov Rov Qab Osmosis (Ecro): Cooktome spacers hauv RO Modules tsim cov hluav taws xob uas tsis lees txais NH₄⁺ (99.91% kev tshem tawm ntawm 4 V) thaum oxidizing cov organics ntawm nyob rau hauv situ Chlorine tiam 7.
Flow - ntawm cov electrodes: 3D Carbon Airgel Cathodes Txhim Kho H₂o₂ Tawm los rau Electro {{fenton Systems, hla kev txwv tsis pub muaj kev txwv.
Rooj 2: Kev sib tw elev electrode kev sib tw thiab nrhav hauv cov ntawv thov kev kho dej tseem ceeb
| Daim ntawv thov | Tub Ntxhais Electrode Kev Sib Tw | Cov Khoom Siv Tawm | Txoj kev daws teeb meem |
|---|---|---|---|
| Dej hiav txwv chlorination | Kev xaiv qis, kev ntsuas | O {- Txaus siab Mooₓ @ iro₂ - ta₂o₅ | Ntev - lub sij hawm ruaj khov nyob rau hauv tiag dej hiav txwv |
| Cua txias Dej Descaling | Cathode fouling, high overpotential | Microstructured Ni Cathodes | Zog -} intensive scaling tshem tawm |
| Wastewater aeo | Fouling, Tsawg Oter Xaiv | BDD, Magnéli -} theem tio₂ anodes | Tus nqi, chlorine byprododuct tsim |
| Puag tshuab | Biofouling, hloov hluav taws xob tsis zoo | CNT / CONTERSIONS Polymer -}}} hloov kho Cathodes | Nplai -} ua cov nyom |
5. Yav Tom Ntej Electrode kev txhim kho kev loj hlob
Tom ntej no -} Nplooj Ntawv Qhia
Kev kho mob -} entryered oxides: Oxygen cov chaw haujlwm (piv txwv li, nyob rau hauv moon, wo₃) modulation qauv hluav taws xob kom haum rau cov er 5.
Ceramics: Magnéli -}}}- Zoo li kev ua haujlwm ntawm 20% tus nqi, nrog Superor Corrosion Kuj 8.
Hybrid catalysts: Ib Leeg - atom catalalysts (piv txwv li}} n {4} n - raws lio.
System -}} qib kev koom ua ke
Cov Khoom Siv Hluav Taws Xob: Pulse / Muaj Peev Xwm Cycling Ntxuav Cov Hluav Taws Xobnyob rau hauv situthaum ua kom zoo dua cov kev sib tw.
Ai - Kev Saib Xyuas Tsav Tsheb: Siv lub tshuab kev kawm kwv yees los yog fouling pib, ua rau kev hloov kho preemptive tam sim no.
Membrane - electrode sib dhos (me me): Xoom {{- Qhov kev teeb tsa sib txawv txo OMIC poob los ntawm 40-60% nyob rau hauv seaswater electrolyzers 9.
Kev Txiav Txim Siab
Cov Khoom Tseem Ceeb: Hloov IR / RU nrog FE / MN - Raws li cov pa dej (piv txwv li, lifeo₃) rau oer.
Sab Laj Electrode Tsim: Siv hluav taws xob elevodode (piv txwv li, ti meshes) nrog cov txheej txheem catalytic txheej.
Txuas ntxiv hluav taws xob: Kev ntsuas cua ncaj qha.
Tag
Kev hloov mus rauMultifunctional, ruaj, thiab xaiv cov hluav taws xobyog qhov tseem ceeb kom tau raws li qhov kev xav tau ntawm kev kho kom zoo nkauj niaj hnub. Thaum cov khoom siv nrhav - xws li muaj vacancics, thiab hybrid catanalys-}}}}}}} Cov lus cog tseg rau hauv cov tshuab yuav tsum tau hais txognqi, talidability, thiab thiavnyob rau hauv tiag - ntiaj teb cov xwm txheej. Yav Tom Ntej Adjent hinges rauKev sib koom tesNtawm cov khoom siv hluav taws xob, cov ntaub ntawv txuj ci, thiab txheej txheem ua rau tsim cov kev daws teeb meem uas ua kom zoo rau hluav taws xob architecture, reactor configuration electriguration, reactational configuration, thiab kev ua haujlwm. Raws li cov dej hauv ntiaj teb muaj zog, hluav taws xob muaj peev xwm ua haujlwm tau zoo, - Cov dej zoo ntawm cov dej txuas ntxiv.
Ntawv Sawv cev
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10.Effects ntawm kev ua haujlwm ntawm kev ua haujlwm ntawm kev sotrochemical dej soquening siv DSA Anode.Rau. Conf. Zog ib puag ncig. Prof. 2018. 10