Efficient removal of heavy metals from aqueous solutions by Mg/Fe bimetallic oxide-modified biochar: Experiments and DFT investigations

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 403, P. 136821 - 136821

Published: March 17, 2023

Language: Английский

---

Advancing the development of nanocomposite adsorbent through zinc-doped nickel ferrite-pinecone biochar for removal of chromium (VI) from wastewater

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 908, P. 168136 - 168136

Published: Nov. 2, 2023

Leather and textile industrial effluents are the main disseminating routes for chromium contamination of water bodies, causing adverse impacts on public environmental health. The attempt to remediate through conventional wastewater treatment methods is inefficient. Therefore, this study aims synthesize zinc-doped nickel ferrite pinecone biochar (Zn-NiF@PBC) nanocomposite removal from systems. Zn-NiF@PBC was synthesized via co-precipitation method. properties (Zn-NiF) were effectively modified by blending with at 1, 5, 10, 15 % (w/w) which successfully embedded Zn-Ni nanoparticles. This characterized confirmed typical adsorbent such as a high surface area 104 m2/g, conducive pore volume 0.117 cm3/g size 3.41 nm (BET), interactive multi-functional groups (FTIR), charge determination (pHpzc,), crystalline structure (XRD) very rough morphology (SEM). maximum adsorption found be 95 specific experimental condition pH 3, dose 1 g/50 mL, contact time 120 min, initial concentration 100 mg/L. data best fitted Langmuir isotherm R2 0.98 indicating process homogeneous monolayer whereas kinetics resembling second-order kinetic 0.99. Moreover, thermodynamics spontaneous, endothermic, increased change in entropy. Finally, regeneration effective up five 5 cycles but gradually degrading terms efficiency after 3 cycles. In general, can huge potential scale-up extend other pollutants clear-up.

Language: Английский

---

Next-Generation Water Treatment: Exploring the Potential of Biopolymer-Based Nanocomposites in Adsorption and Membrane Filtration

Polymers, Journal Year: 2023, Volume and Issue: 15(16), P. 3421 - 3421

Published: Aug. 16, 2023

This review article focuses on the potential of biopolymer-based nanocomposites incorporating nanoparticles, graphene oxide (GO), carbon nanotubes (CNTs), and nanoclays in adsorption membrane filtration processes for water treatment. The aim is to explore effectiveness these innovative materials addressing scarcity contamination issues. highlights exceptional capacities improved performance offered by chitosan, GO, CNTs, which make them effective removing heavy metals, organic pollutants, emerging contaminants from water. It also emphasizes high surface area ion exchange capacity nanoclays, enabling removal contaminants, dyes. Integrating magnetic (Fe2O4) adsorbents technologies highlighted enhance separation efficiency. limitations challenges associated are discussed. concludes emphasizing importance collaboration with industry stakeholders advancing sustainable comprehensive treatment solutions.

Language: Английский

---

Pinecone biochar for the Adsorption of chromium (VI) from wastewater: Kinetics, thermodynamics, and adsorbent regeneration

Environmental Research, Journal Year: 2024, Volume and Issue: 258, P. 119423 - 119423

Published: June 16, 2024

High concentration of chromium in aquatic environments is the trigger for researchers to remediate it from wastewater environments. However, conventional water treatment methods have not been satisfactory removing and over last decade. Similarly, many adsorption studies focused on one aspect treatment, but this study dealt with all aspects packages come up a concrete conclusion. Therefore, aimed prepare pinecone biochar (PBC) via pyrolysis apply Cr(VI) removal wastewater. The PBC was characterized using FTIR, SEM-EDX, BET surface area, pH

Language: Английский

---

Mechanistic interpretation of the sorption of terbuthylazine pesticide onto aged microplastics

Environmental Pollution, Journal Year: 2024, Volume and Issue: 345, P. 123502 - 123502

Published: Feb. 3, 2024

Microplastics (MPs) pose a global concern due to their ubiquitous distribution. Once in the environment, they are subject aging, which changes chemical-physical properties and ability interact with organic pollutants, such as pesticides. Therefore, this study investigated interaction of hydrophobic herbicide terbuthylazine (TBA), is widely used agriculture, artificially aged polyethylene (PE) MP (PE-MP) understand how aging affects its sorption. PE was by an accelerated weathering process including UV irradiation, hydrogen peroxide, ultrasonic treatment, particles were characterized comparison pristine particles. Sorption kinetics performed for materials, while further sorption studies PE-MP included determining environmental factors pH, temperature, TBA concentration. found be significantly lower on compared because led formation oxygen-containing functional groups, resulting reduction hydrophobicity negatively charged sites oxidized surfaces. For PE-MP, best described pseudo-second-order model, it intra-particle diffusion result crack pore formation. followed decreasing trend increasing became less favorable at higher temperatures. The isotherm data revealed complex altered, heterogeneous surfaces involving interactions, bonding, π-π Sips adsorption model. Desorption low, confirming strong interaction. However, thermodynamic results imply that increased temperatures, those from climate change, could promote re-release into environment. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) confirmed onto PE.

Language: Английский

---

Ultrasmall copper-metal organic framework (Cu-MOF) quantum dots decorated on waste derived biochar for enhanced removal of emerging contaminants: Synergistic effect and mechanistic insight

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 366, P. 121802 - 121802

Published: July 13, 2024

Language: Английский

---

ZIF-8 and humic acid modified magnetic corn stalk biochar: An efficient, magnetically stable, and eco-friendly adsorbent for imidacloprid and thiamethoxam removal

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 465, P. 142788 - 142788

Published: April 4, 2023

Language: Английский

---

Can graphene-based composites and membranes solve current water purification challenges - a comprehensive review

Desalination, Journal Year: 2023, Volume and Issue: 567, P. 116952 - 116952

Published: Sept. 9, 2023

Language: Английский

---

Efficient decontamination of aqueous glyphosate using Santa Barbara Amorphous-15 (SBA-15) and graphene oxide-SBA-15 poly-amidoamine functionalized composites

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 466, P. 143263 - 143263

Published: May 2, 2023

Language: Английский

---

Synthesis of Zr-based metal-organic framework/MWCNTs composite for adsorption of enrofloxacin from aqueous solution

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 334, P. 126004 - 126004

Published: Dec. 11, 2023

Language: Английский

---