Cationic dyes adsorption onto high surface area ‘almond shell’ activated carbon: Kinetics, equilibrium isotherms and surface statistical modeling

Ahsaine, Hassan Ait; Zbair, Mohamed; Anfar, Zakaria; Naciri, Yassine; Haouti, Rachid El; Alem, Noureddine El; Ezahri, M.

doi:10.1016/j.mtchem.2018.03.004

Cited by 165 publications

(65 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…14,22,24,25 Porous and functional carbon materials have drawn huge attention for environmental remediation determinations owing to their high porosity and tenability. [26][27][28][29][30] Several crud materials have been used to prepare porous materials such as Cassia stula (commonly known as golden shower; GS), 31 corncob wastes, 32 jujube seed, 33 almond shell, 34 with high adsorption capacity and fast adsorption kinetics.…”

Section: Introductionmentioning

confidence: 99%

Selected pharmaceuticals removal using algae derived porous carbon: experimental, modeling and DFT theoretical insights

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Selected pharmaceuticals removal using algae derived porous carbon: experimental, modeling and DFT theoretical insights

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Before analysis, around 100 mg of sample was ground in a mortar and then suspended in a detergent solution of standard (Se) with concentration of 30 mg/L. The point of zero charge (PZC) was determined using the pH drift method [22,23]. The surface organic functional groups of ANS, HTC@ ANS-180, and HTC@ANS-200 before and after adsorption of BPA and diuron were studied with a Fourier Transformed Infrared spectroscopy (FTIR-8409S, SHIMADZU).…”

mentioning

confidence: 99%

Hydrothermal Carbonization of Argan Nut Shell: Functional Mesoporous Carbon with Excellent Performance in the Adsorption of Bisphenol A and Diuron

Zbair

Bottlinger

Ainassaari

et al. 2018

Waste Biomass Valor

101

View full text Add to dashboard Cite

Hydrochar derived from Argan nut shell (ANS) was synthesized and applied to remove bisphenol A (BPA) and diuron. The results indicated that the hydrochar prepared at 200 °C (HTC@ANS-200) possessed a higher specific surface area (42 m 2 /g) than hydrochar (HTC@ANS-180) prepared at 180 °C (17 m 2 /g). The hydrochars exhibited spherical particles, which are rich in functional groups. The HTC@ANS-200 exhibited high adsorption efficiency, of about 92% of the BPA removal and 95% of diuron removal. The maximum Langmuir adsorption capacities of HTC@ANS-200 at room temperature were 1162.79 mg/for Bisphenol A and 833.33 mg/g for diuron (higher than most reported adsorbents). The adsorption process was spontaneous (− ΔG°) and exothermic (− ΔH°). Excellent reusability was reclaimed after five cycles, the removal efficiency showed a weak decrease of 4% for BPA and 1% for diuron. The analysis of Fourier transforms infrared spectrometry demonstrated that the aromatic C=C and OH played major roles in the adsorption mechanisms of BPA and diuron in this study. The high adsorption capacity was attributed to the beneficial porosity (The pore size of HTC@ANS-200 bigger than the size of BPA and diuron molecule) and surface functional groups. BPA and diuron adsorption occurred also via multiple adsorption mechanisms, including pore filling, π-π interactions, and hydrogen bonding interactions on HTC@ANS-200. Statement of NoveltyTo our knowledge, this is the first paper introduces a new technique to produce hydrochar from argan nut shell and its studies as an adsorbent for the removal of bisphenol A and diuron. This study does not only open up a novel way to recycle argan nut shell but also presents a beneficial approach to synthesize low-cost materials for wastewater treatment.

show abstract

“…Methylene blue and crystal violet are cationic dye with various applications in chemistry, biology, medical science and dyeing industries, and they are highly toxic than other anionic dye (Gao et al 2016). Methylene blue is widely used as hemp, silk fabric, stained paper dyeing, bamboo and wood colouring as well as a chemical agent in printing and dyeing enterprises (Ghosh and Bhattacharyya 2002); its adverse effects on human beings include: cyanosis, vomiting, diarrhoea, tachycardia and jaundice (Ait Ahsaine et al 2018). Crystal violet is a triphenylmethane dye with poor degradability and carcinogenic inhaled or ingested (Saeed et al 2010;Ahmad 2009); it is widely used in textile industries because of its low cost and high solubility in water (Ait Ahsaine et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Methylene blue is widely used as hemp, silk fabric, stained paper dyeing, bamboo and wood colouring as well as a chemical agent in printing and dyeing enterprises (Ghosh and Bhattacharyya 2002); its adverse effects on human beings include: cyanosis, vomiting, diarrhoea, tachycardia and jaundice (Ait Ahsaine et al 2018). Crystal violet is a triphenylmethane dye with poor degradability and carcinogenic inhaled or ingested (Saeed et al 2010;Ahmad 2009); it is widely used in textile industries because of its low cost and high solubility in water (Ait Ahsaine et al 2018). Medically, it is used as an antiseptic with a selective action on gram-positive organisms, also for the treatment of burns, boils, carbuncles and mycotic skin infections (Akinola and Umar 2015).…”

Section: Introductionmentioning

confidence: 99%

Magnetic tuned sorghum husk biosorbent for effective removal of cationic dyes from aqueous solution: isotherm, kinetics, thermodynamics and optimization studies

et al. 2019

View full text Add to dashboard Cite

Dyes containing effluents constitute hazards to the environments and endanger human and aquatic lives. Although activated charcoal has been adjudged the best for adsorption treatment of wastewater, its regeneration and high cost have limited their applications, hence the quest for alternative adsorbent. Magnetic tuned biosorbent was prepared from sorghum husks by in situ co-precipitation of Fe 3 O 4 . It was characterized using Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy and scanning electron microscopy. The biosorbent was then used for the removal of crystal violet (CV) and methylene blue (MB) dyes from aqueous solutions in a batch process. The effects of temperature, initial dye concentration, dosage, contact time as well as pH were investigated, and data obtained were analysed with appropriate kinetic and isotherm models. Response surface method was used for the optimization study of the adsorption using Box-Behnken experimental design. Pseudo-second-order kinetic model was the most appropriate model for both dyes with correlation coefficient (R 2 ) > 0.9 and low % standard error values. The equilibrium data were best fitted with Langmuir isotherm with maximum adsorption capacity (Q max ) of 18.87 and 30.00 mg g −1 for CV and MB, respectively. The thermodynamic parameters for the adsorption processes showed that it was spontaneous, endothermic and random systems with free energy changes less than zero, enthalpy changes (∆H) of + 49.81 and + 51.18 kJ mol −1 , entropy changes (∆S) of + 178.39 and + 177.34 J mol −1 K −1 for MB and CV dyes, respectively. Optimization studies revealed that 95% of the dyes are removable at 1.0 g adsorbent dosage and pH of 4.05 at 50 °C with initial dye concentration of 50 mg L −1 . The prepared adsorbent is cheap, easily recycled and highly effective for the treatment of dye-contaminated water.

show abstract

Cationic dyes adsorption onto high surface area ‘almond shell’ activated carbon: Kinetics, equilibrium isotherms and surface statistical modeling

Cited by 165 publications

References 38 publications

Selected pharmaceuticals removal using algae derived porous carbon: experimental, modeling and DFT theoretical insights

Selected pharmaceuticals removal using algae derived porous carbon: experimental, modeling and DFT theoretical insights

Hydrothermal Carbonization of Argan Nut Shell: Functional Mesoporous Carbon with Excellent Performance in the Adsorption of Bisphenol A and Diuron

Magnetic tuned sorghum husk biosorbent for effective removal of cationic dyes from aqueous solution: isotherm, kinetics, thermodynamics and optimization studies

Contact Info

Product

Resources

About