In conventional aqua curatio systems, maxime late usus flocculants sunt aluminum sales et ferrum sales, aluminium sales manente in tractata aqua erit periculum humanae salus, et RELICTUM Aqua In maxime in wastewater curatio, difficile est vincere secundarium pollutio problems ut magna moles obscura et difficile arbitrio de caeno. Ideo quaerimus naturalis uber quod non facit secundarium pollutio ad environment ad reponere aluminium sal et ferrum Floroculants est opus ad effectum effectum sustineri progressionem strategies hodie. Natural polymer flocculants have attracted much attention among many flocculants due to their abundant raw material sources, low price, good selectivity, small dosage, safety and non-toxicity, and complete biodegradation. Post fecundos decades progressionem, multis naturalis polymer flocculants cum diversis proprietatibus et utitur emergere, in quibus amulum, Lignin, Chitosan et vegetabilis gluten sunt currently late usus.
ChitosanProprietatibus
Chitosan est albus amorphous, translucens tellus solidum, insolubilis in aquam sed solutum in acid, quod est deacetylation productum de Chitin. Generaliter loqui, Chitosan potest vocari Chitosan cum n-acetyl group in Chitin est remota a magis quam LV%. Chitin est pelagus pars exoskeletons animalium et insectorum, et est secundum maximum naturale organicum compositis in terra post Cellulose. Sicut flocculant, Chitosan est naturalis, non-toxicus et degradable. Sunt plures hydroxyl coetus, amino coetus et aliqui n-acetylamino coetus distribui in Macromolecular torquem Chitosan, quod potest formare cationic polyelectrolytes cum excelsum crimen density in acidic solutions, et potest etiam formare network, sicut structuras per hydrogenium et quoque network, sicut et per hydrogenium et in alta et in modum vincula. Cage moleculis, ita complexionis et removere multis toxicus et noxia gravis metallum ions. Chitosan et ejus derivationes habere amplis usus, non solum in textile, printing et tincta, papermaking, medicina, cibos, fungicides, et in Agramate, etc. CHITOSANUS est probatus a US environmental tutela Agency quasi purificans agens enim bibens aqua ex unica commoda in aqua copia applications et aqua curatio.
ApplicationemChitosanper aquam curatio
(I) Remove suspensus solidos in aqua corporis. In natural water, it becomes a negatively charged colloid system due to the existence of clay bacteria, etc. As a long-chain cationic polymer, chitosan can play the dual functions of electric neutralization and coagulation and adsorption and bridging, and has a strong coagulation effect on suspended substances. Comparari cum Traditional Alums et Polyacrylamide ut flocculants, Chitosan habet melius declarando effectus. RIDICA et al. Studuit effectum Flocculation de uno Kaolin aqua distribution cum Chitosan PH valorem erat 5-9, et inventus est Floroculation valde affectus PH valorem et effective PH valorem TEGIDIDELUS EST 7.0-7.5. 1mg / l floclulant, et TEVECIDE Rate excedit XC% et Flocs produci sunt crassum et ieiunium et totalis Floroculation sedimentation tempus non excedunt 1h; Sed PH valorem diminuitur vel augetur, Floroculation efficientiam decrescit, significans quod in ipso angustus phorus, Chitosan potest formare bonum polymerization Kaolin particulas. Quidam studiis invenerunt, quod cum flocculated Bentonite suspensio agitur cum Chitosan, idoneum PH valorem range est lata. Ideo cum turbida aqua continet particulas similes Kaolin, necesse est addere convenientem moles Bentonite ut coagulant ut amplio polymerizationchitosanin particulas. Postea, RIDDO et al. invenerunt
Si est humus in Kalin vel Titanium dioxide suspensionis, facile flocculate et praecipitari cum Chitosan, quia negative comminatus humus attachiatus ad superficiem particularum et humus facilis ad adjust in PH valorem et humus facit facile ad adjust PH valorem et humus facit facile adjust in PH valorem et humus facit facile adjust PH valorem et humus facit facile adjust PH valorem et humus facit facile adjust PH valorem et humus facit facile adjust in PH valorem et humus facit facile ad adjust PH valorem et humus facit facile adjust PH valorem et humus facit facile ad adjust PH valorem et humus facit facile adjust PH pretii et humus facit facile ad adjust PH valorem et humus facit facile adjust PH valorem. Chitosan etiam ostendit superior Floroculation Proprietates naturalis aqua corpora cum diversis Turbeny et alkalinity.
(II) Remove algae et Bacteria ex aqua corporis. In annis, aliqui foris sunt coepit studere ad adsorption et Floroculation Chitosan in Biological Colloid systems ut algae et Bacteria. Chitosan habet remotionem effectus in Freshwater algae, nimirum Spirulina, oscillator algae, chlorella et hyacintho-viridi algae. Studiis ostensum est quod ad Freshwater algae, remotionem est optimum ad ph Z of VII; Nam marine algae, PH est inferior. Oportet dosis Chitosan pendeat algae in aqua corporis. In altiorem concentration of algae, magis dosis of Chitosan necessitates ad additum, et augmentum dosis Chitosan tendit ad causare Floroculation et praecipitatio. citius. Turbidity potest metimur remotionem de algae. Cum PH valorem est VII, 5mg / lchitosanPotest removere XC% de TEGIDENTIA in aqua et altior algae concentration, in pulso pullulantibus et melior est sedimentation perficientur.
Microscopic examen ostendit quod algae qui remota per Floroculation et sedimentation solum aggregata et adherebat et adhuc in integrum et activae. Quia Chitosan non facit aliquam causam negative effectus in speciei in aqua, tractata aqua potest esse adhuc utendum ad live aquamaculture, dissimilis aliis synthetica flocculants ad aquam curatio. Et remotionem mechanism of Chitosan in Bacteria est relative complicated. Per studeo Floroculation et Escherichia coli cum Chitosan, quod est inventus est inaequaliter iactat mechanism est pelagus mechanism of Floroculation Ratio et Chitosan producit hydrogenium vincula in cellula. Alius studium ostendit quod efficientiam Chitosan Floroculation E. coli pendeat non solum in causam de dielectric sed etiam in Hydraulica dimensionem.
(III) Remove RELICTUM aluminium et purificare potum aqua. Aluminium sales et polyaluminum flocculants sunt late in ICTUS aqua curatio processus, sed usum aluminium sal flocculants potest ad auctus aluminium contentus in bibens aqua. RELICTUM aluminium in bibens aqua est gravi aleam ad humanam salutem. Licet Chitosan etiam habet quaestio de aqua residui, quia est naturalis non-toxicus alkaline aminopolysaccharide, residue non faciam nocere ad humanum corpus, et non potest removeri in sequente curatio. Insuper et combined usum chitosan et inorganicis flocculants ut polyaluminum chloride potest reducere contentus de RELICTUM aluminium. Ideo in aquis aqua curatio, Chitosan habet commoda quod alia synthetica organicum polymer flocculants non reponere.
Applicationem Chitosan in Wastewater curatio
(I) Remove Metal ions. Molecular torquem dechitosanet ejus derivationes habet magnum numerum amino coetibus et hydroxyl coetus, ita habet chalating effectus in multis metallum iones, et potest efficaciter adsorb aut capere gravis metallum in solut. Marcus A. Eiden et aliis studiis ostensum est quod ad adsorption facultatem Chitosan ad PB2 + et CR3 + (in unitas chitosan) pervenit 0,2 mmol / g et 0,25 mmol / g, respectively, et fortis adsorption facultatem. Zhang Ting'an et al. Used deactelated Chitosan ad removendum aeris per Floroculation. Eventus ostendit quod cum PH valorem erat 8.0 et missa concentration aeris ions in aqua sample erat inferior quam C mg / l, aeris remotionem rate erat super XCIX%; Missam concentration est 400mg / l et missa concentration a aeris ions in RELICTUM liquido usque obvium nationalibus wastewater vexillum. Alius experimentum probatur, cum PH = 5.0 et adsorption tempus erat 2h, remotionem rate of Chitosan ad Ni2 + in ADSORPTIONPTION DECIPIO Nickel plating vastum liquidum posset pervenire 72,25%.
(II) tractare wastewater cum princeps dapibus contentus ut cibum wastewater. Per cibum dispensando, wastewater quibus magna moles suspenditur solidos dimitti. Et Chitosan Molecule continet a Group, amino coetus et hydroxyl coetus. Cum protonation of Amino coetus, quod ostendit partes cationic polyelectrolyte, quae non solum habet chalating effectus in gravibus metalla, sed etiam efficaciter flocculate et adsorb negative præcepit denique particulas in aqua. Chitin et Chitosan potest formare complexa per hydrogenii vinculum cum proteins, amino acida, pingue acida, etc Fang Zhimin et al. ususchitosan, Aluminium sulfate, ferric sulfate et polypropylene phthalamide quod flocculants ad recuperandam dapibus ex Seafood dispensando wastewater. High dapibus recuperare rate et effluant lux transmittanttance potest adeptus. Because chitosan itself is non-toxic and has no secondary pollution, it can be used to recycle useful substances such as protein and starch in wastewater from food processing plants for processing and reuse, such as adding to feed as animal feed.
(III) Treatment of Printing et Tydea Wastewater. Printing et Tydeing wastewater refers to the wastewater ex bombacio, lana, eget fibra et aliis textile products in processus of pretreatment, tingiles, printing et consummatione. Plerumque continet sales, organicum surfactants et dyes etc., cum complexu components, magna Chroma et High cod. Et develop in directionem anti-oxidatio et anti-biodegradation, quod maxime nocet ad humanam salutem et elit. Chitosan continet amino coetus et hydroxyl coetus, et habet fortis adsorption effectus in Dyes, comprehendo: physica adsorption, eget adsorption et Ion commutationem adsorption, maxime per hydrogenium, etc. effectum. In eodem tempore, in Molecular structuram de Chitosan habet magnum numerum primaria amino coetus, quae forma optimum polymer chelaing agente per coordinationem vincula, quae potest agglutinare in wastewater et non-toxicus et non facit secundarium et non-toxicus et non est in wastewater et non-toxicus et non facit secundarium pollutio, et non-toxicus non producunt in wastewater, et non-toxicus et non facit secundarium et non-toxicus et non facit secundarium et non-toxicus et non facit secundarium et non-toxicus et non facit secundarium pollutio.
(IV) applicationem in caeno dewatering. In praesens, in ingens maior pars Urbana purgamentos curatio plantis uti cationic polyacrylamide tractare caeno. Practice ostensum est quod hoc agente habet bonum Flocculation effectus et facilis ad dewater tenuem, sed residuum, praesertim acrylamide monomer, est fortis carcinogen. Ideo est valde significantius opus suum replacement. Chitosan est bonum caudam Conditioner, quod adjuvat ad formam activated Sludge bacteria micelles, quod potest agglomerate negative præcepit suspendatur materia et organicum materia in solutione et amplio elit. Studiis ostensum est quod Polyaluminum chloride / Chitosan Compositum flocculant non solum manifestum effectus in gravi condiciones, sed etiam comparari ad usum unum PAC vel chitosan, et comparari ad usum unum PAC ad low punctum, et de filtration rate est altior. Fast et est melius Conditioner; in addition, three kinds of carboxymethyl chitosan (N-carboxymethyl chitosan, N, O-carboxymethyl chitosan and O-carboxymethyl chitosan) are used as The flocculant was tested on the dewatering performance of the sludge, and it was found that the flocs formed were strong and not easy to break, indicating that the effect of the flocculant on sludge Dewatering fuit significantly melius quam vulgares flocculants.
Chitosanet derivationes sunt dives in opibus, naturalis, non-toxicus, degradable et variis proprietatibus simul. Sunt viridi aqua curatio agentia. Et rudis materia, Chitin, est secundum maximae naturalis organicum compositis in terris. Unde in annis, in progressionem Chitosan in aqua curatio est obvious incrementum momentum. Ut naturalis polymer quod vicissim vastum in thesaurum, Chitosan fuerit initio applicari in multis agris, sed in perficientur et applicationem in domesticis products adhuc habent quaedam gap comparari cum aliis provectus terris. Cum deepening de investigationis in Chitosan et ejus derivationes, praesertim mutatio chitosan cum excellentissima synthesi proprietatibus, quod habet plus et applicationem pretii. Exploring applicationem technology de Chitosan in aquis curatio et developing environmentally amica products de Chitosan derivationes cum latior application range erit valde lata foro valorem et application spes.
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Post tempus: Aug-09-2022