Recent Advances on Starch-Based Adsorbents for Heavy Metal and Emerging Pollutant Remediation DOI Open Access
Talles Barcelos da Costa, Pedro M. C. Matias, Mohit Sharma

et al.

Polymers, Journal Year: 2024, Volume and Issue: 17(1), P. 15 - 15

Published: Dec. 25, 2024

Starch is one of the most abundant polysaccharides in nature and has a high potential for application several fields, including effluent treatment as an adsorbent. unique structure, with zones different crystallinity glycosidic structure containing hydroxyl groups. This configuration allows wide range interactions pollutants degrees hydrophilicity, which includes from hydrogen bonding to hydrophobic interactions. review article aims survey use starch synthesis diverse adsorbents, forms nanoparticles blends, evaluates their performance terms amount pollutant adsorbed removal efficiency. A critical analysis materials developed, results obtained also presented. Finally, provides outlook on how this polysaccharide can be used more effectively efficiently remediation efforts near future.

Language: Английский

Effectively eliminating lead and cadmium from industrial wastewater using a biowaste-based sorbent DOI Creative Commons

Aida Reda,

Abdel-Ghafar El-Demerdash,

Wagih A. Sadik

et al.

Applied Water Science, Journal Year: 2025, Volume and Issue: 15(2)

Published: Jan. 11, 2025

Abstract Toxic heavy metals, such as Pb(II) and Cd(II), pose serious environmental health risks, stressing the urgent demand for innovative sustainable techniques to reduce their adverse effects. This study investigates use of sugar beet biowaste an eco-friendly biosorbent removal Cd(II) from aqueous solutions, in both laboratory industrial effluents. Characterization through scanning electron microscopy, X-ray diffraction, thermogravimetric analysis, Fourier-transform infrared spectroscopy, energy-dispersive spectroscopy revealed formation stable hydrocerussite otavite, confirming chemisorption. Approximately 95% employed is composed calcium (Ca), carbon (C), oxygen (O). The zeta potential was measured at − 17.5 mV with a point zero charge pH 8.0, total surface area approximately 7.72 m 2 g −1 , Langmuir 11.563 pore volume 0.028 cm 3 . Various parameters, metal concentration, dosage, pH, temperature, contact time, were optimized, achieving maximum within 60 min 12 328 K. Sorption followed pseudo-second-order kinetic model (R = 0.99) Freundlich isotherm 0.98), high sorption capacities 466.5 mg 505.6 Cd(II). Thermodynamic analysis indicated that process spontaneous, thermodynamically favorable, endothermic. effectively removed metals demonstrated efficiencies exceeding 85% most effluent samples Alexandria Ain Sokhna. capacity ratio values close 1 indicate effective uptake minimal interference, even presence methylene blue dye. Comparative untreated more efficient than typical biosorbents, economic cost evaluation processing costs 1.05 USD/kg, highlighting its economically viable option treatment supporting broader goals.

Language: Английский

Citations

1
A Deterministic Mechanism for Efficient Removal of Arsenic and Lead from Wastewater Using Rapidly Synthesized TiO2-(α-Fe2O3) Nanoshells DOI
Teflah K. Alshammari,

Sib Krishna Ghoshal,

Hazri Bakhtiar

et al.

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 413, P. 125958 - 125958

Published: Sept. 10, 2024

Language: Английский

Citations

4
Synthesis, characterization and adsorption studies of hydroxy ethyl cellulose grafted polyacrylic acid hydrogels; using basic yellow-28 as model dye DOI Creative Commons
Barkat Ullah,

Sultan Alam,

Luqman Ali Shah

et al.

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 318, P. 100360 - 100360

Published: April 1, 2024

Novel hydrogels of hydroxy ethyl cellulose and polyacrylic acid (HEC-G-pAAc) were created by varying the ratio to acrylic characterized using analytical techniques. The synthesized through SEM, TGA, FTIR, pH studies Fick's law. SEM images revealed that fabricated have different adsorption sites for dyes. According TGA results decomposition occurs in three successive stages (22-200 °C, 200-310°C, 310-500°C). optimum basic yellow-28 is on HEC-G-pAAc pH-8 as it was observed studies. temperature found be 293 K.The Basic Yellow-28 dye successfully removed from wastewater with a 98 percent effectiveness synthetic an adsorbent. parameters calculated number kinetic models like pseudo-second order, Elovich, intraparticle-diffusion Bangham models. pseudo-2nd order kinetics model best fit data, while Langmuir isotherm offered most thorough explanation process. greatest extent (pAAc = 156 mg/g, 10%HEC-G-pAAc =166.3 20%HEC-G-pAAc =176.2 mg/g) after 90 min contact at K. process exothermic because values ΔH negative (ΔH -4.93, -6.49 -5.741 kJ/mol pAAc, respectively). this study spontaneous, clear ΔG, (ΔG -4.81, -5.34 -5.40 K showed decrease dis-orderness its values.

Language: Английский

Citations

3
Mercury Ion Selective Adsorption from Aqueous Solution Using Amino-Functionalized Magnetic Fe2O3/SiO2 Nanocomposite DOI Open Access
Mahmoud M. Youssif, Heba G. El‐Attar, Stanisław Małecki

et al.

Materials, Journal Year: 2024, Volume and Issue: 17(17), P. 4254 - 4254

Published: Aug. 28, 2024

This study focuses on the development of new amino-functionalized magnetic Fe2O3/SiO2 nanocomposites with varying silicate shell ratios (1:0.5, 1:1, and 1:2) for efficient elimination Hg2+ ions found in solutions. The Fe2O3/SiO2–NH2 adsorbents were characterized their structural, surface, properties using various techniques, including Fourier transform infrared spectrum (FT-IR), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Braunauer–Emmett–Teller (BET), thermogravimetric analysis (TGA), zeta-potential, particle size measurement. We investigated adsorption circumstances, such as pH, dosage adsorbent, duration adsorption. pH value that yielded best results was determined to be 5.0. adsorbent a ratio (1:2) exhibited largest amount capacity 152.03 mg g−1. can attributed its significantly large specific surface area 100.1 m2 g−1, which surpasses other adsorbents. amino functionalization demonstrated strong affinity due chemical interactions between metal groups surface. kinetics outcomes adhere pseudo-second-order kinetic model. isotherms revealed followed Langmuir model, indicating occurred monomolecular layer process. Furthermore, thermodynamic analyses by spontaneous endothermic Additionally, has ability selectively extract mercury from complex mixture ions. nanocomposite, is loaded metal, easily recovered water solution properties. Moreover, it regenerated effortlessly through acid treatment. highlights potential use nanoparticles highly efficient, reusable removal contaminated wastewater.

Language: Английский

Citations

3
Exploring the Frontiers of Carbon Nanotube Synthesis Techniques and Their Potential Applications in Supercapacitors, Gas Sensing and Water Purification DOI Creative Commons

Mamta Bulla,

Vinay Kumar,

Raman Devi

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(6), P. 114504 - 114504

Published: Nov. 14, 2024

Language: Английский

Citations

2
Studies on the adsorption of aqueous cadmium and the treatment of mine tailings using anionic Type-C starch DOI Creative Commons
Ayodele Akinterinwa, Ebun Oladele,

Abdulazeez M. Hammed

et al.

Discover Chemistry., Journal Year: 2024, Volume and Issue: 1(1)

Published: June 10, 2024

Abstract Adsorption-based water treatment technology is a sustainable strategy for health and environmental wellness, as well mineral recovery resource conservation. Extended studies on the Cd 2+ adsorption characteristics of cross-linked/phosphorylated carboxymethyl starch (SCCS) derivatives produced by treating Type-C with anionic precursors, including sodium trimetaphosphate (STMP) monochloroacetate (SMCA) were carried out. The optimum product was subjected to surface area using Brunauer–Emmett–Teller (BET) method, then Fourier transformed infrared (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) before after . BET results showed that derivative mesoporous (pore size: 3.5–6.4 m3/g), while FTIR indicated can be attributed interactions hydroxyl, carbonyl, phosphoryl functional groups SCCS platform. Adsorption equilibrium, kinetics, isotherms, thermodynamics, recovery/regeneration extensively studied various models experimental conditions. efficiently adsorbed (≈ 99%) at data fitness multiple process based combination physisorption chemisorption processes are thermodynamically feasible reversible economic utilization adsorbent. adsorbent used in mine tailing, result removal minerals from tailings very efficient 100%).

Language: Английский

Citations

0
Recent Advances on Starch-Based Adsorbents for Heavy Metal and Emerging Pollutant Remediation DOI Open Access
Talles Barcelos da Costa, Pedro M. C. Matias, Mohit Sharma

et al.

Polymers, Journal Year: 2024, Volume and Issue: 17(1), P. 15 - 15

Published: Dec. 25, 2024

Starch is one of the most abundant polysaccharides in nature and has a high potential for application several fields, including effluent treatment as an adsorbent. unique structure, with zones different crystallinity glycosidic structure containing hydroxyl groups. This configuration allows wide range interactions pollutants degrees hydrophilicity, which includes from hydrogen bonding to hydrophobic interactions. review article aims survey use starch synthesis diverse adsorbents, forms nanoparticles blends, evaluates their performance terms amount pollutant adsorbed removal efficiency. A critical analysis materials developed, results obtained also presented. Finally, provides outlook on how this polysaccharide can be used more effectively efficiently remediation efforts near future.

Language: Английский

Citations

0