Biosorbent silver nanoparticles decorated coffee-ground waste composite for cleaning water and antimicrobial applications

Environmental Science and Pollution Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Language: Английский

---

Adsorptive Separation and Simultaneous Reduction of Highly Toxic Chromium Oxyanions by Agroforestry Biomass-Derived N-Rich Activated Carbon

Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 7, 2025

Language: Английский

---

Highly Efficient Removal of Cadmium from Wastewater Using Eco-Friendly and Cost-Effective Amorphous Silicoaluminophosphates as Adsorbent Particles

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

This study highlights the promising use of amorphous eco-friendly aluminophosphate (Am-AlP) and silicoaluminophosphates (Am-SiAlP) as effective adsorbents for cadmium removal from wastewater. Incorporating silicon into Am-AlP significantly enhanced its surface porous characteristics, optimizing adsorptive capacity. The ideal composition identified was 7.5 mol% Si 92.5 Al, which demonstrated excellent decontamination efficiency. Kinetic studies revealed that over 90% removed within first 30 minutes, indicating rapid adsorption capabilities. Overall, these findings suggest Am-SiAlP are not only cost-effective environmentally friendly but also highly efficient materials addressing contamination in

Language: Английский

---

Rapid Analysis of Heavy Metal Element Adsorption by SCG Based on LIBS Technology

E3S Web of Conferences, Journal Year: 2025, Volume and Issue: 615, P. 02010 - 02010

Published: Jan. 1, 2025

Rapid evaluation and real-time detection of adsorption materials are particularly critical in the treatment heavy metal wastewater. However, most elemental analysis methods have complex pretreatment procedures time-consuming, making difficult to achieve. A laser-induced breakdown spectroscopy device with a 248nm KrF excimer laser as excitation source was used study rapid test content wastewater absorbed by coffee grounds (SCG). This prepared 16 sets spent calibration samples 8 SCG externally adding elements. After optimizing experimental system, characteristic spectral lines Cd II 226.510nm Cu I 324.754nm were analyzed. Using internal standard element, Cd/Cu intensity ratios from tests fitted different mass fractions obtain model, polynomial fitting determination coefficient (R²) reaching 0.998. Eight tested, model analyze capacity for solutions concentrations. The rate increased concentration solution, maximum 18.96 mg/g. work provides reference adsorbent during

Language: Английский

---

Arginine-modified surface coffee grounds activated carbon for Pb\(^{2+}\) adsorption: Kinetic, isotherm and thermodynamic studies

Journal of Metals Materials and Minerals, Journal Year: 2025, Volume and Issue: 35(1), P. e2148 - e2148

Published: Feb. 21, 2025

This research focuses on enhancing the value of coffee waste by converting it into activated carbon for removing Pb²⁺ ions from contaminated water. Coffee grounds were with KOH and carbonized at 600°C 4 h to produce (CGAC), then modified arginine via hydrothermal treatment 120°C 48 create Arg-CGAC. The adsorbents' chemical physical properties analyzed using SEM, FT-IR, BET, pHpzc methods. Batch experiments revealed that Arg-CGAC exhibited superior Pb2+ adsorption (223.10 mg∙g‒1) compared CGAC (119.23 under optimal conditions. Isotherm analysis showed stronger adsorbate-adsorbent interactions a more endothermic demonstrated both physisorption weak chemisorption, while primarily physisorption. Increasing temperatures made ΔG° values negative, indicating favorable Desorption tests 98% yield over four cycles, but efficiency declined after 7th cycle, stabilizing 55% 60%, suggesting good initial performance despite some regeneration limitations.

Language: Английский

---

Evaluation of magnetic teawaste-based biochar particles for removal of cadmium from aqueous solutions

Particuology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

---

Cr (VI) removal from aqueous solutions using Cordia Africana-based activated carbon/red clay/magnetite nanocomposite: optimization via one factor at a time and response surface methodology

Biomass Conversion and Biorefinery, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Language: Английский

---

Optimization strategy for Cr(VI) removal in coke-based modular constructed wetlands: A comprehensive analysis of purification efficiency, removal mechanisms, and practical feasibility

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 381, P. 125231 - 125231

Published: April 7, 2025

Language: Английский

---

The Adsorption-Desorption-Regeneration pathway to a circular economy: The role of waste-derived adsorbents on chromium removal

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132996 - 132996

Published: April 1, 2025

Language: Английский

---

Removal of Rhodamine B from Aqueous Solutions using Coffee Residual

Desalination and Water Treatment, Journal Year: 2025, Volume and Issue: unknown, P. 101188 - 101188

Published: April 1, 2025

Language: Английский

---