Enhanced magnetic and structural properties of chemically prepared Nd-Fe-B particles by reduction-diffusion method through optimization of heat treatments

Kim, Seung Hyun; Galkin, Vitalii; Jeong, Jong‐Ryul; Kuchi, Rambabu; Kim, Dong-Soo

doi:10.1016/j.jallcom.2021.159337

Cited by 7 publications

(1 citation statement)

References 24 publications

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“…The high removal efficiency of the TYB þ TRB can be attributed to the influence of heat and blending of the bauxites in a ratio of 9:1. The thermal modification of the bauxite could have resulted in better crystallinity and distribution of the particles (Kim et al 2021). For instance, the Al-oxides could have been transformed into boehmite and gibbsite due to the thermal modification (Kloprogge et al 2002).…”

Section: Resultsmentioning

confidence: 99%

Enhanced arsenic removal using lateritic bauxite modified by heating and blending

Anang

Tei

Aduboffour³

2022

Water Science and Technology

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The use of bauxite to remove arsenic from wastewater has been confirmed to be effective, but its removal efficiency in literature is not up to 90%, hence, the need to devise a more effective method to remove arsenic from wastewater. In this study, a novel material was prepared by thermally modifying and blending yellow and red lateritic bauxite to form thermally modified and blended yellow and red lateritic bauxite (TYB + TRB). The adsorption isotherm, morphology and chemical composition of the novel material were determined by the Langmuir and Freundlich models, Scanning Electron Microscopy (SEM) and X-ray Fluorescence (XRF), respectively. Application of the novel material in arsenic removal resulted in >97% removal efficiency within 60 min. The arsenic adsorption by TYB + TRB conformed to the Freundlich model. The SEM image depicted a compacted earth material after use of the TYB + TRB to remove arsenic from the wastewater. The XRF results also showed a drastic reduction in the chemical composition of the novel bauxite except Ti, thus suggesting the occurrence of multiple mechanisms during the arsenic removal. This study demonstrated the potential of TYB + TRB to be developed and used as the most suitable material for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%