Bentonite-based sodium alginate/ dextrin cross-linked poly (acrylic acid) hydrogel nanohybrids for facile removal of paraquat herbicide from aqueous solutions

Autor: Ankit Verma, Oguzhan Gunduz, Dawid Janas, Sourbh Thakur, Walaa F. Alsanie, Vijay Kumar Thakur, Fabrizio Scarpa, Pankaj Raizada
Přispěvatelé: Thakur S., Verma A., Raizada P., GÜNDÜZ O., Janas D., Alsanie W. F., Scarpa F., Thakur V. K.
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Hydrogel composite
Social Sciences and Humanities
ADSORPTION
Social Sciences (SOC)
Pharmaceutical Toxicology
Health
Toxicology and Mutagenesis
TOKSİKOLOJİ
ENGINEERING
ENVIRONMENTAL
Temel Bilimler (SCI)
Mühendislik
ENGINEERING
Sağlık Bilimleri
EFFICIENT REMOVAL
Kimya
METHYLENE-BLUE
chemistry.chemical_compound
Sociology
CHEMISTRY
ANTIOXIDANT
WATER
chemistry.chemical_classification
education.field_of_study
PHARMACOLOGY & TOXICOLOGY
Aqueous solution
Temel Bilimler
Langmuir adsorption model
Life Sciences
Hydrogels
General Medicine
Hydrogen-Ion Concentration
Pollution
NANOCOMPOSITE SYNTHESIS
Farmasötik Toksikoloji
Acrylates
Self-healing hydrogels
Farmakoloji ve Toksikoloji
Natural Sciences (SCI)
Physical Sciences
CELLULOSE
symbols
Bentonite
Engineering and Technology
Sosyal Bilimler (SOC)
Dextrin
Natural Sciences
Sodium alginate
Paraquat
Thermogravimetric analysis
Environmental Engineering
DYE
Alginates
TOXICOLOGY
SOCIAL SCIENCES
GENERAL
Population
DEXTRIN
Life Sciences (LIFE)
symbols.namesake
Adsorption
Meslek Bilimleri
Dextrins
Yaşam Bilimleri
Health Sciences
Professional Sciences
Environmental Chemistry
Sosyal ve Beşeri Bilimler
Paraquat removal
education
Engineering
Computing & Technology (ENG)
Eczacılık
Sosyoloji
Acrylic acid
PUBLIC
ENVIRONMENTAL & OCCUPATIONAL HEALTH
Herbicides
Public Health
Environmental and Occupational Health
Reproducibility of Results
Mühendislik
Bilişim ve Teknoloji (ENG)
ADSORBENT
General Chemistry
Sosyal Bilimler Genel
Pharmacology and Therapeutics
KAMU
ÇEVRE VE İŞ SAĞLIĞI
Kinetics
chemistry
Yaşam Bilimleri (LIFE)
MÜHENDİSLİK
ÇEVRE
Mühendislik ve Teknoloji
Water Pollutants
Chemical
Nuclear chemistry
Popis: © 2021 Elsevier LtdRemoval of hazardous herbicides from the aqueous solution is critical for overcoming health-related issues across the wider population. In the current work, we have prepared sodium alginate (SAlg), dextrin, and acrylic acid (AA) based cross-linked hydrogels, composed of bentonite incorporated in the biocompatible hydrogel matrix. This hydrogel composite can remove highly toxic herbicide paraquat (PQ). As-synthesised hydrogel (SAlg/dextrin-cl-PAA) and hydrogel composite (SAlg/dextrin-cl-PAA/bentonite) were further analysed by infra-red spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and thermogravimetric analysis (TGA/DSC). For the first time, PQ adsorption onto sodium and dextrin-based hydrogel was also evaluated. The measured highest removal capacities were 76.923 and 90.909 mg g−1 for the SAlg/dextrin-cl-PAA and SAlg/dextrin-cl-PAA/bentonite, respectively. Pseudo-second-order (PSO) and Langmuir isotherm models have shown to be best suited for accurately describing the adsorption mechanism. A thermodynamics study verified that the adsorption of PQ on adsorbents is spontaneous, favourable and exothermic. Moreover, reusability analysis shows that the adsorbents possess good reproducibility even after six successive cycles. The adsorption results demonstrate that the synthesised adsorbents are very efficient for removing herbicides (PQ) from wastewater.
Databáze: OpenAIRE
Externí odkaz: