The present study aims to evaluate the potential of Sesbania bispinosa biochar (SBBC) and its nanocomposites, SBBC/Mn-oxide, SBBC/Cu-oxide and SBBC/Mn-oxide/Cu-oxide for Cr removal from contaminated water. Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX) and point of zero charge (PZC) were employed. Impact of initial Cr concentration (25–200 mg/L), pH levels (2–8), adsorbent dose (1–3 g/L), contact time (15–180 min), and coexisting ions in water were investigated. The highest Cr adsorption (75 mg/g) was achieved with triple nanocomposite (SBBC/Mn-oxide/Cuoxide), followed by dual SBBC/Cu-oxide (59.65 mg/g), SBBC/Mn-oxide (44.9 mg/g) composites, and SBBC alone (37.4 mg/g). The coexisting ions showed a decline in Cr removal. Reusability results revealed a slightly lower Cr removal (8 %) with SBBC/Mn-oxide/Cu-oxide nanocomposite in the fifth cycle. The experimental adsorption data were well-explained through Freundlich and pseudo-second-order kinetic models. It is concluded that nanoparticle-biochar composites are effective for remediating Cr-contaminated water.
Authors
- Rizwan Tariq,
- Muhammad Imran,
- Muhammad Nadeem,
- Behzad Murtaza,
- Jibran Iqbal,
- Noor S. Shah,
- Muhammad Amjad,
- Sajjad Ahmad,
- Łukasz Cichocki link open in new tab
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.ces.2025.121410
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2025
