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Hybrid Sargassum-sand sorbent: A novel adsorbent in packed column to treat metal-bearing wastewaters from inductively coupled plasma-optical emission spectrometry
Kuppusamy Vijayaraghavan
Published in
2013
PMID: 23947707
Volume: 48
   
Issue: 13
Pages: 1685 - 1693
Abstract
Laboratory batch and column experiments were carried out to examine the efficiency of algal-based treatment technique to clean-up wastewaters emanating from inductively coupled plasma-optical emission spectrometry (ICP-OES). Chemical characterization revealed the extreme complexity of the wastewater, with the presence of 14 different metals under very low pH (pH = 1.1), high conductivity (6.98 mS/cm), total dissolved solid (4.46 g/L) and salinity (3.77). Batch experiments using Sargassum biomass indicated that it was possible to attain high removal efficiencies at optimum pH of 4.0. Efforts were also made to continuously treat ICP-OES wastewater using up-flow packed column. However, swelling of Sargassum biomass leads to stoppage of column. To address the problem, Sargassum was mixed with sand at a ratio of 40: 60 on volume basis. Remarkably, the hybrid Sargassum-sand sorbent showed very high removal efficiency towards multiple metal ions with the column able to operate for 11 h at a flow rate of 10 mL/min. Metal ions such as Cu, Cd, and Pb were only under trace levels in the treated water until 11 h. The results of the treatment process were compared with trade effluent discharge standards. Further the process evaluation and cost analysis were presented. © 2013 Copyright Taylor and Francis Group, LLC.
About the journal
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
ISSN10934529
Open AccessNo
Concepts (56)
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    Chemical characterization
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    Column experiments
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    INDUCTIVELY COUPLED PLASMA-OPTICAL EMISSION SPECTROMETRY
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    MULTIPLE METAL IONS
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    Packed column
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    Removal efficiencies
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    Total dissolved solids
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    TREATMENT TECHNIQUES
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    Algae
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    Bioremediation
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    Biosorption
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    Effluent treatment
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    Effluents
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    Experiments
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    Lead
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    Lead removal (water treatment)
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    Metal ions
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    Removal
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    Separation
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    Spectrometry
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    Wastewater treatment
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    Adsorbent
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    Cadmium
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    Cuprous ion
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    Metal ion
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    SORBENT
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    TRACE METAL
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    Alga
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    Article
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    Atomic emission spectrometry
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    Batch reactor
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    Biomass
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    Conductance
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    CONTAINER
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    Controlled study
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    Cost benefit analysis
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    Flow rate
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    Heavy metal removal
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    Hybrid
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    METAL BEARING WASTEWATER
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    Packed bed reactor
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    pH
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    Salinity
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    Sand
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    SARGASSUM
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    Solid
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    Upflow reactor
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    Waste water
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    Waste water management
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    Adsorption
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    Metals, heavy
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    SARGASSUM
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    Silicon dioxide
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    Spectrophotometry, atomic
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    Waste disposal, fluid
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    Water pollutants, chemical