Efficient Removal of Cadmium from Municipal Wastewater using Mn3O4–MnOOH Nanocomposites–Based Batch Adsorption Process: Adsorbent Synthesis, Adsorption Isotherms, and Kinetics
Water, Air, and Soil Pollution, cilt.237, sa.20, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 237 Sayı: 20
- Basım Tarihi: 2026
- Doi Numarası: 10.1007/s11270-026-09873-8
- Dergi Adı: Water, Air, and Soil Pollution
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, EMBASE, Environment Index, Geobase, Greenfile, Zoological Record, Natural Science Collection (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Earth, Atmospheric, & Aquatic Science Collection (ProQuest), Health Research Premium Collection (ProQuest)
- Anahtar Kelimeler: Batch adsorption, Cadmium, Isotherm models, Mn3O4–MnOOH nanocomposites, Municipal wastewater
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
In this study, the applicability of Mn3O4–MnOOH nanocomposites as adsorbent materials for the removal of cadmium (Cd) ions from municipal wastewater was investigated. The dominant parameters, namely pH, buffer volume, adsorbent amount, and agitation period were optimized using the univariate approach to determine the optimal experimental conditions. Then, the equilibrium adsorption studies were performed in real wastewater matrix by spiking cadmium to municipal wastewater within the range of 2.0 – 40 mg/L. The matrix-matching calibration strategy was used for the accurate and precise determination of cadmium by developing the calibration plot with the spiked wastewater. The equilibrium data obtained was modelled mathematically utilizing the Freundlich, Langmuir, Sips, D-R, and Temkin models. Langmuir and Sips isotherm models fit the experimental data well with the R2 values of 0.9959 and 0.9970, respectively, compared to the other models used. A kinetic study was also performed to determine the rate of the adsorption process, and the results indicated that the adsorption process is of the pseudo-second-order model. The results of this study showed that the Mn3O4–MnOOH nanocomposites–based adsorption process was successfully utilized for the removal of cadmium from municipal wastewater.