Removing fluoride ions from wastewater by Fe3O4 nanoparticles: Modified Rhodophytes (red algae) as biochar
JOURNAL OF WATER PROCESS ENGINEERING(2024)
摘要
The present study seeks to utilize the biochar prepared from red algae (AR) and its composite with iron oxide (Fe3O4)-nanoparticle (MBC-AR) to estimate their batch extent potential decontamination mechanism for fluoride ion removal from aqueous solution. Various characterization techniques have been analyzed to study the functional groups, including F -IR, XRD, EDS, SEM, FE-SEM, TEM and VSM of the synthesized adsorbent (MBC-AR). Several adequate batch adsorption studies were performed to ascertain the equilibrium state. The research yielded a well-established langmuir adsorption isotherm with a capacity for adsorption of 96.4 mg/g, and it suited well to a pseudo-second-order kinetic model. According to reports, the MBC-AR is a useful bio-adsorbent for eliminating fluoride ions from wastewater and other large-scale uses. At room temperature (298 K), the effects of bio-adsorbent doses (10-150 mg), initial concentration of adsorbate taken (20-80 mg/L), pH value (2.0-10.0), as well as contact time (0-250 min) were assessed for fluoride removal using MBC-AR. The efficacy of adsorption and its statistical data were well-established with a pseudo-second-order mechanism and Langmuir isotherm (R-2 = 0.99). It was determined that the highest adsorption efficacy and capacity were 96.4 mg/g in the phase equilibrium process.
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关键词
Red algae (Rhodophytes),Fe3O4-nanoparticle,Biochar,Wastewater,Langmuir adsorption,Fluoride removal
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