Adsorption of Ni(II) from Aqueous Solution by Wheat Straw Modified with Mercaptopropionyl Functional Groups

Langmuir, Год журнала: 2025, Номер unknown

Опубликована: Фев. 19, 2025

Mercaptopropionyl wheat straw (MPWS) was prepared as an adsorbent by modifying with mercaptopropionyl groups, and the ability of MPWS for removal Ni(II) from aqueous solution examined. The using identified through investigating impacts dosage, adsorption temperature, time. Different models isotherm kinetics were utilized to fit experimental results elucidate mechanism Ni(II). Environmental interference factors, including initial concentration, pH value, inorganic matters, organic matters in wastewater, examined evaluate antienvironmental disturbance capability during adsorption. A rate high 99.02% achieved at 6.0 temperature 30 °C a contact time 100 min. exhibited excellent alignment both pseudo-second-order kinetic model, Freundlich isothermal Redlich–Peterson Hill model. Furthermore, coexisting substances environment could inhibit process MPWS; however, this inhibition be mitigated or eliminated increasing amount absorbent MPWS. Overall, displays remarkable resistance against environmental its application removing wastewater.

Язык: Английский

Surface engineering of chak’o nano-clay with iron oxide and APTES for enhanced heavy metal adsorption in water treatment

F1000Research, Год журнала: 2025, Номер 14, С. 334 - 334

Опубликована: Март 27, 2025

Background The heavy metal contamination of water leads to major environmental and health problems throughout the Mantaro River basin area. study assesses adsorption capacity surface-modified chak’o nano-clay for extracting lead (Pb2+) arsenic (As5+). Methods Surface modifications unmodified were achieved using through Aminopropyltriethoxysilane (APTES), iron oxide (Fe3O4), combined APTES + Fe3O4 particles. Adsorption performance was assessed batch experiments over 8 hours. BET XPS analyses conducted determine surface area, pore volume, functional group availability. kinetics modeled a pseudo-second-order model, equilibrium data analyzed Langmuir isotherm. Results dual modification produced maximum removal capacities which led 95–100% Pb2+ As5+ analysis demonstrated that area (300 m2/g 375 m2/g) volume (0.420 cm3/g 0.600 cm3/g) as well availability increased substantially thus resulting in improved adsorption. model fit kinetic while isotherm behavior describe monolayer treatment combination with generated an adsorbent better magnetic properties electrical conductivity improving its recovery potential structural stability. dual-modified showed high stability during three cycles desorption tests because it maintained more than 90% original process. Conclusion research shows specialized treatments deliver advanced absorption abilities positions leading choice sustainable system remediation.

Язык: Английский