Utilizing supercritical fluid for efficient preparation of kaolinite nanosheets to enhance Ga(Ⅲ) adsorption DOI

Xiangbo Fan,

Zhaowu Wang, Peng Li

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 353, P. 128310 - 128310

Published: June 6, 2024

Language: Английский

Competitive Effect of Zinc and Cadmium on the Biosorption of Chromium by Orange Waste DOI Open Access
A.B. Pérez-Marín, J.F. Ortuño, M.I. Aguilar

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(1), P. 148 - 148

Published: Jan. 8, 2024

Batch experiments were conducted to test orange waste (OW), an agricultural solid byproduct from the juice manufacturing industry, as adsorbent for binary solutions of Cd2+-Cr3+ and Zn2+-Cr3+. Fourier transform infrared spectroscopy (FTIR) point zero charge (pHpzc) used identify functional groups on OW surface involved in biosorption. The biosorption equilibrium data both binary-metal obtained fitted various isotherm models. extended Sips non-modified Redlich-Peterson models gave best fit experimental data. According model, maximum capacity was 0.573 mmol·g−1 Cd2+, 0.453 Zn2+, 1.96 Cr3+. sorption dropped 0.061 Cd2+ 0.101 mmol·g1 Zn2+ their systems with Cr3+ higher initial metal concentrations solution. However, chromium only slightly affected by presence or Zn2+. For systems, a second ion solution always conduces reduction other decreased more than vice versa. Conclusively, effective removal ions aqueous can still be achieved

Language: Английский

Citations

5
Radiation grafting mediated tailoring of a mercury (Hg(II)) selective adsorbent “RAdMer”: Mechanistic insights, uptake performance and reusability evaluation in artificially contaminated groundwater DOI
Nilanjal Misra, Swarnima Rawat, M. Tiwari

et al.

Groundwater for Sustainable Development, Journal Year: 2024, Volume and Issue: 25, P. 101139 - 101139

Published: March 3, 2024

Language: Английский

Citations

5
Enhanced water treatment with TEMPO-modified luffa cellulose-PVA nanofiber composite for removal of hexavalent chromium DOI Creative Commons

Hadar M. Abdullah,

Shahyan S. Ahmed,

Banaz Arshad Abdulghafar

et al.

Results in Chemistry, Journal Year: 2024, Volume and Issue: 8, P. 101582 - 101582

Published: June 1, 2024

Water treatment has emerged as a global priority in recent years due to its direct impact on human health. To address this concern, the utilization of cost-effective, readily available, and efficient materials is imperative overcoming associated challenges. In study, cellulose derived from Luffa cylindrica (LC) underwent oxidation using (2,2,6,6-tetramethylpiperidine-1-yl)oxyl (TEMPO) subsequently functionalized with amine groups poly(ethylenimine) (PEI). The resulting material was then composited polyvinyl alcohol (PVA) nanofiber. modified membrane employed for adsorption hexavalent chromium wastewater various pH, contact time, temperature, concentration, composite dose. findings revealed that process pH-dependent high optimal removal (93 %) observed at pH 2, (94 dose, (90.3 time. Kinetics were studied by applying pseudo-first-order, pseudo-second-order, Elovich, Intraparticle diffusion models. And data suggested adheres pseudo-second-order model (R2 = 0.9948). Moreover, isotherm examined Langmuir, Freundlich, Tempkin, D-P equation results exhibited satisfactory fit Langmuir 0.99193) maximum removable capacity (52.91).

Language: Английский

Citations

5
Performance assessment of graphene oxide decorated with silver nanoparticles as adsorbent for removal of metformin from water: Equilibrium modeling, kinetic and thermodynamic studies DOI Creative Commons
Nafisur Rahman,

Monika Bharti,

Mohd Nasir

et al.

Next Materials, Journal Year: 2023, Volume and Issue: 3, P. 100046 - 100046

Published: Dec. 19, 2023

In the present study, graphene oxide decorated with silver nanoparticles (GO@AgNPs) was synthesized for effective removal of metformin from water. The prepared GO@AgNPs characterized by using Fourier transform Infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric-differential thermal analyses (TGA-DTA), scanning electron microscopy (SEM) coupled dispersive (EDX) and transmission (TEM). Response surface methodology via Box-Behnken design adopted optimizing variables adsorption on GO@AgNPs. Under optimized conditions (contact time = 50 min; pH 6.5; adsorbent dose 0.015 g; initial concentration mg/L) capacity efficiency were 131.7 ±.0.30 mg/g 99.34% ±.0.33, respectively. data obtained at 305, 310, 315 320 K assessed non-linear isotherm kinetic models. Freundlich model fits best to measured data. pseudo second order equation well study impact temperature demonstrated that sorption process endothermic (∆H° 31.335 kJ/mol; Ea 32.009 kJ/mol) spontaneous in nature (∆G° −11.162, −11.876, −12.537 −13.268 kJ/mol K, respectively). Moreover, value sticking probability (S* 0.00082) illustrated high adsorption/desorption shows there no loss capacities upto 6 cycles which effectiveness as a potential remediation aqueous system.

Language: Английский

Citations

11
Heavy Metal Removal from Wastewater Using Poly(Gamma-Glutamic Acid)-Based Hydrogel DOI Creative Commons

Fujie Chen,

Zhao Yan-bin,

Hang Zhao

et al.

Gels, Journal Year: 2024, Volume and Issue: 10(4), P. 259 - 259

Published: April 11, 2024

The removal of toxic heavy metal ions from wastewater is great significance in the protection environment and human health. Poly(gamma-glutamic acid) (PGA) a non-toxic, biodegradable, highly water-soluble polymer possessing carboxyl imino functional groups. Herein, water-insoluble PGA-based hydrogels were prepared, characterized, investigated as adsorbents. prepared recyclable exhibited good adsorption effects on including Cu2+, Cr6+, Zn2+. parameters temperature, solution pH, initial concentration ions, contact time capacity hydrogel for Cu2+ investigated. was spontaneous exothermic process. process followed pseudo-first-order kinetic model Langmuir isotherm model, implying physical monolayer adsorption. mechanisms investigation that adsorbed via electrostatic interactions with anionic carboxylate groups PGA addition to coordination –NH Importantly, reusability capability remained high after five consecutive cycles. properties make it potential candidate material ion treatment.

Language: Английский

Citations

4
Biochar-based technology in water and wastewater treatment DOI
Jonas Bayuo, Abayomi Babatunde Alayande, Kelvin Mtei

et al.

Elsevier eBooks, Journal Year: 2025, Volume and Issue: unknown, P. 153 - 194

Published: Jan. 1, 2025

Language: Английский

Citations

0
Biosorption mechanism of Cr(VI) by live and heat-killed Saccharomyces cerevisiae DOI Creative Commons

Xinyan Zheng,

Po Hu, Ruxian Yao

et al.

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101021 - 101021

Published: Jan. 1, 2025

Language: Английский

Citations

0
Efficient adsorption properties of uranium from wastewater using biochar derived from Hami-melon peels DOI
Chengxin Li,

Peihong Mao,

Guangwen Feng

et al.

Journal of Radioanalytical and Nuclear Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

Language: Английский

Citations

0
Sustainable water purification: evaluating Phumdi biomass adsorbent performance through machine learning-based feature analysis DOI

Lairenlakpam Helena,

Sudhakar Ningthoujam,

Potsangbam Albino Kumar

et al.

Clean Technologies and Environmental Policy, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Language: Английский

Citations

0
A state-of-the-art review of explicit multicomponent isotherm models for the modeling of equilibrium data: From fundamentals to applications DOI
Qili Hu,

Liting Hao,

Qiuming Pei

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132202 - 132202

Published: Feb. 1, 2025

Language: Английский

Citations

0