Fabrication and characterization of magnetic graphene oxide-g-poly(acrylamide)/gelatin hydrogel nanocomposites for effective adsorption of copper ions from aqueous solutions DOI Creative Commons

Parinaz Kheiry,

Hossein Hosseinzadeh, Mahnaz Saraei

и другие.

Water Practice & Technology, Год журнала: 2024, Номер 19(9), С. 3676 - 3692

Опубликована: Июль 4, 2024

ABSTRACT In this work, a magnetic nanocomposite adsorbent was synthesized by crosslinking graft copolymerization of gelatin and acrylamide onto graphene oxide nanosheets in the presence Fe3O4 nanoparticles. The structure nanocomposites characterized using FTIR, SEM, TEM, XRD, VSM point zero charge (pHpzc). prepared were employed as bioadsorbents for adsorption copper ions. effects parameters under different conditions studied detail through batch experiments. maximum ion capacity 259 g. g−1 achieved optimum that found to be: pH=8.0, concentration=80 mg L−1, dosage=0.5 mg. contact time=2 hours, temperature=60 °C. kinetics isotherms fitted well at various concentrations (40, 80 160 L−1) second-order Langmuir models with R2=0.9991 0.9928, respectively. Moreover, thermodynamic show process spontaneous endothermic. addition, adsorbents depicted excellent regeneration ability after six adsorption-desorption cycles maintained 89% its initial capacity. conclusion, obtained results confirmed environmentally friendly high capacities could be effective elimination ions from wastewaters.

Язык: Английский

Effective removal of Cu(II) from water by three-dimensional composite microspheres based on chitosan/sodium alginate/silicon dioxide: Adsorption performance and mechanism DOI
Hang Yin, Miao Zhang, Bowen Wang

и другие.

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 277, С. 134585 - 134585

Опубликована: Авг. 8, 2024

Язык: Английский

Процитировано

6

Co-utilization of sepiolite and ferromanganese ore reduces rice Cd and As concentrations via soil immobilization and root Fe-Mn plaque resistance DOI

Shen Zheng,

Chao Xu,

Zunchang Luo

и другие.

The Science of The Total Environment, Год журнала: 2023, Номер 908, С. 168269 - 168269

Опубликована: Ноя. 1, 2023

Язык: Английский

Процитировано

13

Insight into the mechanism of ferrate(VI) activation by mineral zincite for carbamazepine degradation: Role of Fe(V) species and free radical induction DOI
Ji Shu,

Xiping Xu,

Yichong Zhang

и другие.

Chemical Engineering Journal, Год журнала: 2023, Номер 473, С. 145360 - 145360

Опубликована: Авг. 15, 2023

Язык: Английский

Процитировано

12

Recycling of Mn oxide-loaded AMD sludge composite for the removal of As(V) and Sb(V) from wastewater: Adsorption performance and mechanisms DOI Creative Commons

Jiajun Zou,

Ruixue Zhang,

Yuran Fu

и другие.

Environmental Technology & Innovation, Год журнала: 2024, Номер 36, С. 103820 - 103820

Опубликована: Сен. 6, 2024

Язык: Английский

Процитировано

5

Advancements in water purification: green synthesis of pineapple peel-derived iron manganese binary oxide magnetic nanocomposites for efficient methylene blue adsorption DOI
Mohsina Ahmed, Abu Nasar

Emergent Materials, Год журнала: 2024, Номер unknown

Опубликована: Апрель 17, 2024

Язык: Английский

Процитировано

4

Silicone-modified black peanut shell (BPS) biochar adsorbents: Preparation and their adsorptions for copper(II) from water DOI Creative Commons
Chen Liu, Xin Yan, Hexin Zhang

и другие.

Heliyon, Год журнала: 2024, Номер 10(15), С. e35169 - e35169

Опубликована: Июль 26, 2024

Novel silicone-modified biochar adsorbents (BPS-MBCs) were prepared by utilizing waste black peanut shell (BPS) as a raw and gamma-amino-propyl triethoxysilane (silicone) an inorganic modifier. The novelty of this work is that the incorporation silicone into BPS can rise specific surface area porosity BPS-MBCs elevate their adsorptions for copper (II). Sorption kinetics data (II) molded using five kinetic equations [i.e. Lagergren 1st-order 2nd-order, intraparticle diffusion (IN-D), Elovich, Diffusion-chemisorption]. equilibrium adsorption analyzed two-parameter isotherm Langmuir, Freundlich, Dubinin-Radushkevich, Temkin] three-parameter Sips, Redlich-Peterson Toth models. It was validated sorption on matched better with pseudo-2nd-order kinetic, Diffusion-chemisorption Langmuir maximal q

Язык: Английский

Процитировано

3

Industrial by-products (ferrous sulfate minerals and stone powder) can serve as amendments to remediate Cd-As paddy soil, alleviating Cd-As accumulation in rice DOI Creative Commons

Dele Meng,

Shuoyu Li,

Zegui Li

и другие.

Environmental Chemistry and Ecotoxicology, Год журнала: 2024, Номер unknown

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

3

Synthesis of honeycomb-like citric acid-crosslinked chitosan hydrogel beads (cCHBs): Insight into structural characteristics of Cu(II)-loaded cCHBs (cCHBs-Cu(II)) DOI
Jing Yang, Ru Liu, Zifei Sun

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 140244 - 140244

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Alfa Fiber‐Mesoporous Activated Carbon for Copper Ions Adsorption: Comparative Study, Kinetics, Isotherm and Thermodynamic Studies DOI
Mohamed Azizi,

Montassar Jendoubi,

Mohsen Mhamdi

и другие.

ChemistrySelect, Год журнала: 2025, Номер 10(16)

Опубликована: Апрель 1, 2025

Abstract Alfa fiber is used as a low‐cost precursor for the production of activated carbon (ACAF) through chemical activation with zinc chloride at 500 °C. In this context, ACAF was applied to elimination Cu(II) from water and compared commercial (CAC). The porosity, structural, thermal stability were characterized by SEM, FTIR, BET, TGA analysis. surface oxygen functional groups analyzed using Boehm's titration. Batch experiments in stirred reactor performed study effect operating parameters on adsorption process: pH (2–6), temperature (25–55 °C), amount adsorbent (0.03–0.1 g). Isotherms models: Langmuir, Freundlich, Dubinin–Raduskevich tested. results revealed that had high area 1013 m 2 /g CAC adsorbent, 978.85 /g. isotherms kinetics onto both adsorbents can be described well Langmuir isotherm pseudo‐second‐order models. monolayer maximum capacity toward 41.666 21.276 mg/g 328 K, respectively. Thermodynamics indicated spontaneous endothermic. mechanism ions an electrostatic interaction.

Язык: Английский

Процитировано

0

Adsorption of Pb in Water by Fe/MnOx‐Loaded Attapulgite‐Hydrochar Composites: Efficacy and Mechanism DOI
Junwei Ge,

Mengyu Wang,

Tian Sun

и другие.

Journal of Applied Polymer Science, Год журнала: 2025, Номер unknown

Опубликована: Май 10, 2025

ABSTRACT In order to develop an effective method remove Pb(II) from water, researchers created a novel composite material (FMHCA) using hydrochloric acid‐activated attapulgite (HATP) and hydrochar (HC) loaded with Fe/Mn oxides. The adsorption capacities of three adsorbents were comparatively analyzed: HATP, attapulgite‐hydrochar (HCA), Fe/Mn‐modified HCA (FMHCA). microstructure, elemental composition, pore characteristics determined by SEM–EDX, XPS, XRD, FTIR, BET analyses. beneficial functional groups, including Fe‐Mn oxides, hydroxyl, carboxyl present in the adsorbent highly conducive removal. test demonstrated that ratio HATP HC preparation FMHCA at 1:3 was optimal, had higher capacity for ( Q m = 320.85 mg/g) than both HCA. followed pseudo‐second‐order model, isothermal model exhibiting strong correlation Langmuir model. This suggests process is monolayer chemisorption. findings this study offer technical support cost‐effective efficient removal heavy metals water.

Язык: Английский

Процитировано

0