Studies on Novel Zerovalent Iron Decorated Cellulose Nanofibers for Defluoridation
Notice bibliographique
Résumé
Water is an essential and important component of the universe and it plays a pivotal role in the proper functioning of the earth's ecosystems. In spite of the several water bodies, potable drinking water is not readily available for millions of people around the world. The main cause of this scenario could be associated with rapid industrialization and population growth. Over seven hundred inorganic and organic micropollutants in water have been reported. Some of these micropollutants are highly carcinogenic and toxic while some have very long residence times in the environment and are neither biotransformable nor biodegradable. Several techniques are available to remove these contaminants from potable water and industrial wastewater which include conventional coagulation, chemical precipitation, ion-exchange, reverse osmosis, electrolysis, electrodialysis, and adsorption. Among these, Adsorption, is a cost effective technique that removes both organic and inorganic contaminants from water. The most widely adsorbents for water treatment are activated carbon, activated alumina (1), and biosorbents like cellulose, chitosan (2). It is well known that cellulose is a natural biodegradable polysaccharide is bestowed with very good features to promote diverse applications. This naturally occurring polysaccharide, (C6H10O5)n, has anhydroglucose rings as the repeat unit with a -1,4 glucosidic bond. The excellent properties attributed to this polysaccharide such as biodegradability, good stability, intramolecular hydrogen bonding, etc. prompted us to explore its potential for the effective interaction with contaminants (3). Indeed conversion of natural macro fibers to nano fibers would result in increased surface area and increased sorption. The combination of nanotechnology and chemical modification is an alternative approach offering a new technological platform to improve the binding efficiency of biobased adsorbents. As the size of biosorbents is reduced to nanoscale, the huge increase in the specific area is expected to provide an enhanced density of binding sites on the adsorbent Further, doping of nano particles of zerovalent iron, will further improve the sorption capacity of the sorbent towards the contaminants. It is well known that nano zerovalent iron exhibits high metal scavenging properties owing to the reactive nature of iron present in the zerovalent state. Recently, zerovalent iron (ZVI) has been found useful for the rapid adsorption of As(III) and As(V) (4) and its reactivity was found to increase in smaller dimensions i.e., nanoscale zero-valent iron (NZVI). However, because of their advanced dispersive properties, these nano adsorbents with small dimensions are difficult to recycle and may lead to loss of the adsorbent and bring about secondary pollution to the environment (5, 6). To overcome these difficulties, embedding of nanoparticles in the membranes with high surface area would lead to practical environmental applications.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».