article · ACS Applied Engineering Materials
A composite material made of treated kaolin clay combined with zerovalent nickel nanoparticles was developed to remove crystal violet and methyl orange dyes from textile wastewater. Laboratory tests showed that the material achieved high maximum adsorption capacities of 802.56 milligrams per gram for crystal violet and 812.28 milligrams per gram for methyl orange under optimal conditions of temperature, contact time, and acidity. The composite functioned effectively even when competing cationic and anionic ions were present in the solution. Furthermore, the material proved durable during recycling tests, retaining over 92 percent of its removal effectiveness for crystal violet and 94 percent for methyl orange after 10 cycles of use. The adsorption process was determined to be spontaneous, endothermic, and controlled by chemical interactions, demonstrating the composite's potential as a stable and reusable treatment option for wastewater.
Textile manufacturing produces wastewater contaminated with synthetic dyes that are difficult to eliminate. Developing durable and reusable materials that capture diverse dyes helps make water purification more efficient. This clay-based composite shows strong pollutant uptake and retains high performance over repeated cycles, offering a practical direction for addressing dye pollution from industrial effluent.
The composite is aimed at industrial wastewater treatment, specifically for textile facilities dealing with dye effluents. Its demonstrated stability across 10 reuse cycles and tolerance to coexisting ions suggest suitability for continuous treatment systems. However, because the findings reflect laboratory-scale batch evaluations, the technology remains at an applied research stage and requires scaling up and testing with real industrial effluent before commercial deployment.
AI-generated from the published abstract. Always read the original work before citing.
In this study, a novel biobased treated kaolin clay incorporated with zerovalent nickel (TKC-Ni0NPs) was fabricated and employed as an efficient functionalized adsorbent for the elimination of crystal violet (CV) and methyl orange (MO) from textile wastewater. The adsorption capacity of TKC-Ni0NPs was improved by incorporating the functional moieties of nickel nanoparticles on the treated kaolin clay structure using the experimental data from the kinetics, isotherm, thermodynamics, and reusability study. The crystalline structures, functional groups, and morphological characteristics of TKC, Ni0NPs, and TKC-Ni0NPs were analyzed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and high-resolution scanning electron microscopy (HRSEM). The point of zero charge pH on the surface of the TKC-Ni0NPs was evaluated as 4.5. The adsorptive removal of CV and MO was explored at solution pH, contact time, adsorbent dosage, initial CV/MO concentration, and temperature. Maximum adsorption capacities of 802.56 and 812.28 mg/g were reported for both CV and MO using TKC-Ni0NPs at the optimal solution pH of 6 for CV and 4 for MO, contact time of 60 min, adsorbent dosage of 25 mg/L, initial CV/MO concentration of 100 mg/L, and temperature of 313 K. Remarkably, TKC-Ni0NPs exhibited favorable behavior for the adsorption of MO and CV in the presence of both cationic and anionic coexisting ions. The reusability study showed over 92.00 and 94.00% effectiveness for CV and MO even after 10 cycles, respectively, which holds great promise for industrial use. A pseudo-second-order kinetic model effectively suited the adsorption kinetics, implying that the adsorption process is chemisorption controlled. Among the explored isotherm models, the Langmuir isotherm model exhibited the best fit for the experimental data. Thermodynamic analysis indicated that the adsorption is endothermic and spontaneous on the adsorbent surface. Consequently, a cost-effective, versatile, and stable biobased composite with significant potential for industrial wastewater treatment was successfully developed.
This page summarises published work. The authoritative version sits with the publisher.
DOI: 10.1021/acsaenm.4c00065
Is something wrong with this record? Report it or request removal.
Discussion
Have you built on this work, tried to replicate it, or seen it applied in practice? Share what you know. Verified researchers and MARATTO™ domain experts can open a discussion, and any member can reply. Contributions are reviewed before they appear.
No discussion yet. Open the first thread.
New to MARATTO™? Create a free account.
