Mechanistic insights into the remediation of bromide ions from desalinated water using roasted date pits

Al-Ghouti, Mohammad A.; Disi, Zulfa Al; Al-Kaabi, Nasser; Khraisheh, Majeda

doi:10.1016/j.cej.2016.09.091

Cited by 30 publications

(13 citation statements)

References 34 publications

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“…The overall trend of the percentage removal of MB by the black olive stones is observed to have less increasing/decreasing fluctuations with each initial concentration than the green olive stones. This can be due to the adsorption process’s heterogeneity and the occurrence of many types of chemical bonding and coordination of MB molecules onto green olive stones as a result of their unique adsorption related functional groups 34 . Furthermore, the highest percentage removal of MB onto the black olive stones was at 50 ppm, followed by decreases at 100 ppm (60.2% removal) and 200 ppm (42.3% removal) only to increase to 56.5% at 300 ppm and decrease again at 400 ppm to reach 47.6%.…”

Section: Resultsmentioning

confidence: 99%

“…Studying the morphology and the chemical structure of the adsorbents after adsorption is necessary to understand the mechanisms of MB adsorption onto the adsorbents 32 – 34 . For these reasons, SEM, FTIR, and CHN as well as bulk and particle densities were examined for the olive stones involved in the adsorption process of MB.…”

Section: Methodsmentioning

confidence: 99%

“…Effect of olive stones particle size on the adsorption of MB from water. The adsorbent particle size greatly affects its capacity towards adsorbing pollutants 34 . Increasing the adsorbent's particle size usually results in a decrease in its adsorptive properties due to a decreased surface area.…”

Section: Adsorption Isotherms Effect Of the Solution Ph On The Mb Admentioning

confidence: 99%

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Mechanistic understanding of the adsorption and thermodynamic aspects of cationic methylene blue dye onto cellulosic olive stones biomass from wastewater

Al-Ghouti

Al-Absi

2020

Sci Rep

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264

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In the current study, the mechanistic understanding of the adsorption isotherm and thermodynamic aspects of cationic methylene blue (MB) dye adsorption onto cellulosic olive stones biomass from wastewater were investigated. The batch adsorption of MB onto the olive stones (black and green olive stones) was tested at a variety of pH, dye concentrations, temperatures, and biomass particle sizes. The adsorption thermodynamics such as Gibbs free energy, enthalpy, and entropy changes were also calculated. Moreover, the desorption studies of MB from the spent olive stones were studied to explore the re-usability of the biomasses. The results revealed that under the optimum pH of 10, the maximum MB uptake was achieved i.e. 80.2% for the green olive stones and 70.9% for the black olive stones. The green olive stones were found to be more efficient in remediating higher MB concentrations from water than the black olive stones. The highest MB removal of the green olive stones was achieved at 600 ppm of MB, while the highest MB removal of the black olive stones was observed at 50 ppm of MB. Furthermore, for almost all the concentrations studied (50–1000 ppm), the MB adsorption was the highest at the temperature of 45 °C (P value < 0.05). It was shown by the Fourier transform infrared that the electrostatic interaction and hydrogen bonding were proposed as dominant adsorption mechanisms at basic and acidic pH, respectively. While the hydrophobic-hydrophobic interaction was a dominant mechanism at neutral pH. The thermodynamic studies revealed that the adsorption process was endothermic, spontaneous, and favorable. Moreover, the real wastewater experiment and the desorption studies showed that the green and black olive stones were a cost-effective and promising adsorbents for MB remediation from wastewater on account of their high adsorption and desorption removal capacities.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Adsorption Isotherms Effect Of the Solution Ph On The Mb Admentioning

confidence: 99%

See 1 more Smart Citation

Mechanistic understanding of the adsorption and thermodynamic aspects of cationic methylene blue dye onto cellulosic olive stones biomass from wastewater

Al-Ghouti

Al-Absi

2020

Sci Rep

Self Cite

264

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“…It is noteworthy that date palm is of great importance in the Qatari and Middle Eastern community for its known association with the religion and cultural practices. The date pits are considered a waste with zero economic value (with potential disposable issues) and form around 15% of the weight of the date fruit 17 . Several recent studies highlighted the potential use of date pits in its raw or modified states for the remediation of various metals and pollutants from variety of sources 18 .…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, Al-Ghouti et al . 17 , investigated the use of roasted date pits for Br − removal from water and results illustrates a great adsorption potential of the adsorbent. However, to the best of our knowledge, there is no studies that were previously done on the application of date pits in the removal of mercury from aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of mercury from water by adsorbents derived from date pits

Al-Ghouti

Da’ana

Abu-Dieyeh

et al. 2019

Sci Rep

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104

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The current work presented here focuses on the remediation of mercury from water using modified low-cost materials. Modified date pits, low cost, minimal pretreatment steps and locally abundant agricultural waste materials were effectively employed as an adsorbent for remediating Hg2+ from aqueous media. Physical and chemical modification were developed such as thermal roasting (RDP), sulfur (SMRDP) and silane (SIMRDP) based modifications. Results showed that maximum adsorption by RDP was at pH 6, AC and both modifications was at pH 4. Furthermore, RDP has exothermic adsorption mechanism while AC, SMRDP, and SIMRDP have endothermic. All adsorbents except SIMRDP have spontaneous adsorption process. SEM analysis showed that the surface morphology of RDP was not significantly affected by different treatments while surface of AC was affected. The investigation for good adsorbents for Hg2+ uptake from different anthropogenic sources has been carried out by many investigators worldwide towards having a safe environment. In the current study, the highest Hg2+ adsorption of SMRDP was relatively high compared to other known adsorbents.

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Adsorption on Alternative Low‐Cost Materials‐Derived Adsorbents in Water Treatment

Stawiński

Wal

2021

Applied Water Science

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Mechanistic insights into the remediation of bromide ions from desalinated water using roasted date pits

Cited by 30 publications

References 34 publications

Mechanistic understanding of the adsorption and thermodynamic aspects of cationic methylene blue dye onto cellulosic olive stones biomass from wastewater

Mechanistic understanding of the adsorption and thermodynamic aspects of cationic methylene blue dye onto cellulosic olive stones biomass from wastewater

Adsorptive removal of mercury from water by adsorbents derived from date pits

Adsorption on Alternative Low‐Cost Materials‐Derived Adsorbents in Water Treatment

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