Aluminium sulfate yog ib qho ntawm feem ntau siv cov tshuaj inorganic hauv cov txheej txheem kev lag luam, tshwj xeeb tshaj yog hauv kev kho dej, kev tsim ntawv, thiab kev ua textile. Rau cov kws tshaj lij, cov kws tshaj lij, thiab cov tuam txhab kho dej, kev nkag siab txog nws cov tshuaj cais tawm thiab kev ua haujlwm yog qhov tseem ceeb thaum xaiv cov khoom tsim nyog rau kev siv hauv kev lag luam.
Aluminium Sulfate yog dab tsi?
Basic Chemical txhais
Aluminium sulfate yog ib qho inorganic chemical compound dav siv los ua coagulant hauv kev lag luam thiab hauv nroog kho dej.
Nws cov tshuaj chemical yog:
Al₂(SO₄)₃
Chemically, nws belongs rau ib pawg ntawm cov tebchaw hu ua sulfate ntsev, uas yog tsim los ntawm sulfuric acid thiab hlau ions.
Aluminium sulfate muaj nyob rau hauv ntau hom kev siv hauv kev lag luam, suav nrog:
Anhydrous aluminium sulfate
Hydrated aluminium sulfate xws li Al₂(SO₄)₃·14–18H₂O
Daim ntawv hydrated yog feem ntau tsim thiab siv lag luam vim nws yaj yooj yim hauv dej thiab ua tau zoo hauv cov txheej txheem coagulation.
Physical thiab Chemical Properties
Aluminium sulfate muaj ob peb lub cev thiab tshuaj lom neeg cov yam ntxwv uas ua rau nws haum rau cov txheej txheem kev lag luam.
Cov khoom tseem ceeb muaj xws li:
Cov tsos mob: dawb, tawm -dawb, los yog lub teeb grey crystals, granules, los yog hmoov
Solubility: heev soluble nyob rau hauv dej
Cov yam ntxwv pH: aqueous daws yog acidic
Qhov ceev: kwv yees li 2.7 g / cm³ (anhydrous daim ntawv)
Melting cwj pwm: decomposes raws li cua sov es tsis yog melting ncaj qha
Hauv dej, aluminium sulfate tsim cov khoom siv hydrolysis uas ua rau nws ua haujlwm zoo coagulating thiab flocculating tus neeg sawv cev.
Lub compound tseem muaj tshuaj ruaj khov nyob rau hauv qhuav cia tej yam kev mob, uas ua rau nws haum rau loj -scale industrial faib thiab bulk tuav.
Cov txheej txheem ntau lawm
Kev tsim khoom ntawm txhuas sulfate feem ntau cuam tshuam nrog cov tshuaj tiv thaiv ntawm sulfuric acid thiab txhuas - muaj cov ntaub ntawv raw.
Txoj kev tsim ntau tshaj plaws yog cov txheej txheem sulfuric acid.
Tej raw khoom muaj xws li:
Bauxite
Aluminium hydroxide
Kaolin av nplaum
Ib qho piv txwv yooj yim ntawm kev sib piv yog:
2Al(OH)₃ + 3H₂SO₄ → Al₂(SO₄)₃ + 6H₂O
Hauv qhov tshuaj tiv thaiv no:
Sulfuric acid reacts nrog aluminium hydroxide
Aluminium sulfate thiab dej yog tsim
Cov khoom uas tau tshwm sim yog lim, crystallized, thiab qhuav kom tau cov qib lag luam sib txawv.
Puas yog Aluminium Sulfate yog ntsev? (Kev piav qhia txog science)
Lub ntsiab lus ntawm ntsev hauv Chemistry
Hauv chemistry, ntsev yog qhov sib xyaw ua ke los ntawm cov tshuaj tiv thaiv nruab nrab ntawm cov kua qaub thiab lub hauv paus.
Cov ntsev feem ntau muaj xws li:
Positive ions (cations)
Tsis zoo ions (anions)
Cov ions no ua ke los tsim cov khoom siv hluav taws xob nruab nrab. Ntau cov khoom siv tshuaj siv hauv kev kho dej thiab kev ua tshuaj muaj nyob rau hauv qeb ntsev.
Vim li cas Aluminium Sulfate thiaj li raug cais raws li ntsev
Aluminium sulfate yog cais raws li ntsev vim nws muaj ob hom ions:
Al³⁺ (Aluminium ions)
SO₄²⁻ (sulphate ions)
Nws yog tsim los ntawm cov tshuaj tiv thaiv uas muaj sulfuric acid (H₂SO₄) thiab txhuas -cov ntaub ntawv.
Yog li ntawd, los ntawm kev xav tshuaj, aluminium sulfate yog ib qho tshuaj inorganic sulfate ntsev.
Qhov kev faib tawm no yog qhov tseem ceeb vim tias cov ntsev xws li txhuas sulfate tuaj yeem pom tus cwj pwm zoo hauv cov tshuab aqueous, uas tso cai rau cov kws ua haujlwm los tswj kev cuam tshuam hauv kev kho dej, kev lag luam, thiab kev tsim khoom.
Puas yog Aluminium Sulfate yog Acidic Salt lossis Neutral Salt?
Txawm hais tias txhuas sulfate yog cais raws li ntsev, nws cov kua dej aqueous behaves acidically.
Qhov no tshwm sim vim Al³⁺ ions raug hydrolysis hauv dej.
Cov txheej txheem yooj yim hydrolysis tuaj yeem qhia tau tias:
Al³⁺ + 3H₂O → Al(OH)₃ + 3H⁺
Cov tshuaj tiv thaiv no tso tawm hydrogen ions (H⁺), uas txo cov pH ntawm cov tshuaj.
Hauv cov txheej txheem kho dej, cov tshuaj tiv thaiv no ua rau tsim cov txhuas hydroxide flocs (Al (OH) ₃), uas ua lub luag haujlwm tseem ceeb hauv kev tshem tawm impurities.
Kev coj tus cwj pwm ntawm Aluminium Sulfate hauv dej
Hydrolysis Reaction
Thaum txhuas sulfate yaj hauv dej, nws dhau los ua cov tshuaj tiv thaiv hydrolysis uas tsim cov txhuas hydroxide.
Qhov tshwm sim ntawm aluminium hydroxide flocs muaj cov qauv gelatinous uas tuaj yeem ntes thiab ntxiab cov khoom hauv dej.
Cov flocs no yog qhov tseem ceeb rau kev nthuav dav zoo hauv kev kho dej.
Coagulation Mechanism
Aluminium sulfate ua haujlwm ua coagulant los ntawm ntau lub tshuab:
Them neutralization
Cov khoom raug tshem tawm hauv dej feem ntau muaj cov nqi tsis zoo. Aluminium ions neutralize cov nqi no, cia cov khoom sib sau ua ke.
Floc tsim
Aluminium hydroxide precipitates ua nplaum flocs.
Sedimentation
Cov flocs ntxiab tshem tawm cov khib nyiab thiab nyob rau hauv qab, cia cov dej huv cais.
Cov txheej txheem no yog siv dav hauv cov chaw kho dej hauv nroog thiab cov chaw ua dej khib nyiab.
PH Influence ntawm Reaction Efficiency
Kev ua tau zoo ntawm txhuas sulfate nyob ntawm cov dej pH.
Qhov zoo tshaj plaws pH ntau yam:
PH 5.5–7.5
Yog tias pH qis dhau:
Tshaj acidity yuav txo tau floc stability
Yog tias pH siab dhau lawm:
Aluminium hydroxide nag lossis daus ua haujlwm tsawg
Vim li no, ntau txoj kev kho mob suav nrog pH tswj lossis hloov kho alkalinity thaum noj tshuaj txhuas sulfate.
Muaj kev siv ntawm Aluminium Sulfate
Kev Lag Luam Kev Kho Dej
Daim ntawv thov loj tshaj plaws ntawm aluminium sulfate yog hauv dej purification.
Common siv muaj xws li:
Kev kho dej haus
Kev kho dej khib nyiab hauv nroog
Industrial effluent kev kho mob
Nws pab tshem tawm:
turbidity
suspended solids
phosphorus
organic paug
Ntawv thiab Pulp Manufacturing
Hauv kev lag luam ntawv, aluminium sulfate yog siv los ua tus sizing thiab tuav tus neeg sawv cev.
Nws txhim kho:
ntawv zog
ink nqus
fiber kev sib txuas
ntawv nto zoo
Textile thiab Dyeing Industry
Aluminium sulfate kuj ua haujlwm raws li mordant hauv textile dyeing.
Lub mordant pab dyes khi mus tas li rau cov ntaub, txhim kho xim durability thiab ntxuav tsis kam.
Kev tsim kho thiab kev siv cement
Hauv cov khoom siv, aluminium sulfate tuaj yeem ua raws li:
ib tug cement chaw accelerator
ib feem ntawm cov ntaub ntawv waterproofing
Nws yog qee zaum siv rau hauv cov qauv tshwj xeeb rau kev ceev - teeb tsa pob zeb.
Lwm Cov Kev Siv Hluav Taws Xob
Cov ntawv thov ntxiv muaj xws li:
av acidification hauv kev ua liaj ua teb
cov khoom siv hluav taws kub
ua npuas ncauj extinguishing agents
Cov no siv qhia txog kev ua tau zoo ntawm txhuas sulfate thoob plaws ntau qhov kev lag luam.
Cov ntsiab lus tseem ceeb Cov neeg yuav khoom yuav tsum paub
Rau pawg neeg yuav khoom, kev nkag siab txog cov khoom tshwj xeeb yog qhov tseem ceeb thaum muab cov txhuas sulfate.
Cov Qib Muaj Qib
Common coj mus muag qib muaj xws li:
Qib Industrial
Kev kho dej haus qib
Ntawv qib kev lag luam
Txhua qib muaj qhov sib txawv impurity txwv thiab cov kev xav tau zoo.
Qhov tseem ceeb ntawm kev ua tau zoo
Cov yam ntxwv tseem ceeb ntawm cov neeg yuav khoom feem ntau ntsuas suav nrog:
Al₂O₃ cov ntsiab lus (qib nquag tivthaiv)
Hlau (Fe) cov ntsiab lus
Dej-insoluble teeb meem
Kev daws pH
Particle loj faib
Siab dua Al₂O₃ cov ntsiab lus feem ntau qhia tias muaj zog coagulation ntau dua.
Cov Qauv Khoom Siv
Aluminium sulfate muaj nyob rau hauv ntau hom kev lag luam:
Hmoov
Granules
Ua kua aluminium sulfate
Cov ntaub ntawv ua kua feem ntau nyiam nyob rau hauv cov chaw kho mob loj vim tias lawv tso cai rau kev siv tshuaj tsis siv neeg.
Kev saib xyuas kev nyab xeeb thiab ib puag ncig
Kev tuav thiab khaws cia
Cov xwm txheej khaws cia zoo muaj xws li:
khaws cov khoom kom qhuav thiab kaw
tiv thaiv nws los ntawm noo noo
zam kev sib cuag nrog cov tshuaj alkaline
Kev tiv thaiv noo noo tuaj yeem ua rau caking thiab txo cov khoom ua haujlwm.
Industrial Safety Guidelines
Cov neeg ua haujlwm tuav aluminium sulfate yuav tsum ua raws li cov txheej txheem tshuaj lom neeg kev nyab xeeb:
siv cov cuab yeej tiv thaiv tus kheej (PPE)
siv cov kev tswj plua plav
tsis txhob nqus cov hmoov zoo
Kev ua haujlwm tu cev kom raug txo qis kev pheej hmoo ua haujlwm.
Environmental Impact
Thaum siv kom raug, aluminium sulfate plays lub luag haujlwm tseem ceeb hauv kev tiv thaiv ib puag ncig.
Nws pab:
txhim kho dej kom zoo
tshem tawm cov pa phem
txo turbidity thiab nutrient loads
Txawm li cas los xij, kev tswj kev noj kom zoo yog qhov tseem ceeb kom tsis txhob muaj cov txhuas ntau dhau hauv cov dej kho.
Xaus
Hauv kev faib tshuaj, aluminium sulfate yog kom meej meej ntsev. Nws yog ib qho inorganic sulfate ntsev uas muaj txhuas ions (Al³⁺) thiab sulfate ions (SO₄²⁻).
Vim nws tus cwj pwm hydrolysis thiab muaj peev xwm tsim tau txhuas hydroxide flocs, aluminium sulfate tau dhau los ua ib qho tseem ceeb ntawm cov tshuaj hauv kev kho dej thiab kev lag luam.
Rau cov kws tshaj lij thiab cov kws tsim khoom, xaiv cov khoom tsim nyog yuav tsum tau saib xyuas ntau yam tseem ceeb:
Khoom purity
Al₂O₃ cov ntsiab lus
Qib impurity xws li hlau
Particle loj thiab cov khoom tsim
Kev nkag siab txog cov kev qhia tshwj xeeb no ua kom ntseeg tau tias kev ua tau zoo hauv cov ntawv thov xws li dej huv, tsim cov ntawv, textile dyeing, thiab cov ntaub ntawv tsim kho.