Comparative Study of Single and Multi-layered Fixed Bed Columns for the 
 Removal of Multi-metal Element using Rice Husk Adsorbents

Sad, Fatihatul Nabila; Ibrahem, Ahmmed Saadi; Ismai, Kamariah Noor

doi:10.3923/jas.2014.1234.1243

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Many wastewaters will have a certain level of various contaminants, including heavy metals, sulfate, organics, etc. Sulfate must be removed from wastewater to comply with environmental rules and protect public safety and health [2]. Due to its toxicity to the environment, sulfate is one of the main industrial pollutants that has drawn a lot of attention in water research [3].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Sulfate from Wastewater by Using New Material

Obeid,

Nile,

Al Juboury

2023

E3S Web Conf.

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Using physical activation, a new composite adsorbent was prepared by modifying low-cost local adsorbent. This low-cost local adsorbent was also prepared from activating sludge, bentonite, and limestone (SBL). In comparison to the low-cost LCL, the adsorption capacity of the new composite adsorbent was improved. This was measured in terms of its ability to remove sulfate from wastewater. The behavior of the sulfate adsorption processes by using (SBL) as an adsorbent was investigated in batch experiments by examining different values of solution pH, contact time, adsorbent dose, and initial SO4 concentration. The high removal efficiency was exhibited by (SBL) = 96%. These results reveal the great potential of the new composite adsorbent (SBL) if applied to the absorption of sulfate ions.

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Section: Introductionmentioning

confidence: 99%

Adsorption Sulfate from Wastewater by Using New Material

Obeid,

Nile,

Al Juboury

2023

E3S Web Conf.

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show abstract

“…Wastewater resulting from different human activities such as industry, agriculture and urbanisation contains certain concentrations of various heavy metals. The removal of heavy metals from wastewater is essential to comply with environmental regulations and, of course, for the sake of human health and safety [MAHAGAMAGE, MANAGE 2018;SADON et al 2014]. Lead is a metal of high toxicity.…”

Section: Introductionmentioning

confidence: 99%

Journal of Water and Land Development

Abdul-Hameed,

Al Juboury

2020

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A new composite adsorbent was prepared by modifying low cost local adsorbent (LCL) using MgFe layered double hydroxide (LDH). This low cost local adsorbent was also prepared from the activation of date palm leaf derived from agricultural waste. In comparison to the low LCL, the adsorption capacity of the new composite adsorbent (LCL/MgFe-LDH) was improved. This was measured in terms of its ability to remove lead from wastewater. The Scanning electron microscope (SEM), Energy dispersive spectroscopy (EDS), Fourier-transform infrared spectroscopy (FTIR) and the specific surface area by the (Brunauer, Emmett and Teller) theory (BET) tests were conducted for the characterisation of LCL and LCL/MgFe-LDH. The behaviour of the lead adsorption processes by using LCL/MgFe-LDH as adsorbent was investigated in batch experiments by examining different values of solution pH, contact time, adsorbent dose and initial Pb 2+ concentration. High removal efficiency was exhibited by LCL/MgFe-LDH, a value almost double that of LCL. This was attributed to the increase in surface area of LCL/MgFe-LDH (79.7 m 2 •g -1 ) in contrast to the surface area of LCL (24.5 m 2 •g -1 ). The Freundlich equations and pseudo-second-order kinetics model were appropriate for the provision of adsorption equilibrium data for Pb 2+ on adsorbents. These results reveal the great potential of the new composite adsorbent (LCL/MgFe-LDH) if applied to the absorption of heavy metal ions.

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Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation

Chong

Zhu

Balan

et al. 2017

Journal of Environmental Chemical Engineering

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Carbon-based sulphonated catalysts (CBSCs) were made from rice husk for biodiesel production. The CBSCs were prepared by microwave (MW) and conventional heating processes from the same feedstock. In both heating systems, the preparation was a two-step process: carbonisation and sulphonation. The aim of this study was to use MW heating to reduce the conventional CBSC preparation time and enhance the -SO3H group attachment to the solid catalyst. The biomass based solid acid catalysts from the two systems were characterised and compared in terms of physicochemical properties including: sulphonation, morphology, surface area and structure. The reaction times for MW assisted carbonisation and for sulphonation were significantly reduced compared to the conventional heating system; these were 30 min vs 4 h and 20 min vs 12 h, respectively. The MW prepared catalyst showed higher sulphur content (4.91%) as compared to the conventional catalyst (2.10%). The FTIR analysis showed well distinguished peaks for -SO3H for the MW prepared catalyst suggesting the solid catalyst was successfully sulphonated, while these peaks were very weak for the conventional catalyst. SEM analysis revealed a highly porous structure in the MW prepared catalyst, whilst a denser solid resulted for its conventionally prepared analogue, owing to the higher temperatures applied and longer sulphonation time. The surface area for the MW was higher than the conventionally prepared catalysts (43.63 m 2 /g and 37.01 m 2 /g, respectively).The structure of the samples was identified as amorphous for both catalysts as confirmed by XRD. The prepared CBSC is expected to catalyse biodiesel production reaction as evidenced by its total acidity and surface area.

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Comparative Study of Single and Multi-layered Fixed Bed Columns for the Removal of Multi-metal Element using Rice Husk Adsorbents

Cited by 3 publications

References 11 publications

Adsorption Sulfate from Wastewater by Using New Material

Adsorption Sulfate from Wastewater by Using New Material

Journal of Water and Land Development

Characterization of rice husk-based catalyst prepared via conventional and microwave carbonisation

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