Assessment of the performance of SDS-impregnated brewery waste as suitable adsorbent for the removal of Pb and Cd from water
Date
2018Author
Fosso-Kankeu, Elvis
Leamy, Meiklejohn
Akinpelu, Enoch
Waanders, Frans
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Show full item recordAbstract
— Due to increasing populations and an ever-changing
climate, limited water resources are South Africa’s burden. Clean
water is important for all living organisms’ health and
environmental sustainability. To achieve efficient and
cost-effective ways of removing heavy metals from water, the
development of different water treatment technologies are
important. This study evaluates the performance of organic waste
in the form of brewery waste as suitable adsorbent for removing
Pb and Cd from water. Raw brewery waste was treated with
sodium dodecyl sulphate (SDS) to investigate whether
pre-treatment of raw organic waste can possibly enhance the
removal rate of metals. Characterization of the adsorbents was
done by FTIR analyses. Pseudo-first-order and
pseudo-second-order kinetic models were utilized as well as the
Langmuir and Freundlich isotherm models to determine the
adsorption rate and affinity of the adsorbents. Other factors
influencing the adsorption process that was investigated include
the effects of adsorbent dosage, contact time, initial metal ions
concentration and temperature. The untreated brewery waste
removed 68.17% Pb(II) and 56.28% Cd(II) which increased to
95.30% Pb(II) and 83.29% Cd(II) when treated with SDS.
Treatment of brewery waste can be used to enhance the adsorption
capacity. Thermodynamic parameter evaluation indicated that the
adsorption process was endothermic in nature and
thermodynamically favourable in the case of treated brewery
waste. Treated brewery waste can therefore be used for efficient
Pb and Cd removal from water
URI
http://hdl.handle.net/10394/34207https://www.eares.org/siteadmin/upload/1500EAP1118244.pdf
https://doi.org/10.17758/EARES4.EAP1118244