Adsorption of Cr(VI) on <i>Stipa tenacissima</i> L (Alfa): Characteristics, kinetics and thermodynamic studies

Ladjali, Samir; Amokrane, Samira; Mekatel, El Hadj; Nibou, Djamel

doi:10.1080/01496395.2018.1521833

Cited by 16 publications

(15 citation statements)

References 26 publications

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“…At higher concentrations, relatively less available binding sites may responsible for reduction of uptake capacity of Cr(VI) species by Eupatorium adenophoru -alginate beads [52]. Similar results have been reported by many authors using different types of plant biosorbents [3,10,39,52].…”

Section: Resultssupporting

confidence: 75%

“…Above pH 2.0, the gradual increase in negatively charged biomass surface groups as well as shifting of monovalent HCrO 4 - to divalent Cr 2 O 7 -2 and CrO 4 -2 ions in aqueous solutions resulted the decrease in Cr(VI) biosorption efficiency [1,6,7,49]. The similar trends were also observed for Cr(VI) biosorption in various plant biosorbents [3,5,6,10,23,50].…”

Section: Resultsmentioning

confidence: 61%

“…Chromium is a potentially toxic metal originating from anthropogenic activities such as the mining of chromium ores, iron-steel, electroplating, tanning, printing, dyeing, papermaking, and textile industries, municipal waste landfill, and sewage irrigation, pesticide, herbicides, antibiotics, and fertilizer application [1,2,3,4]. Such numerous industries have resulted in a generation of large quantities of liquid effluent loaded with high concentration of chromium.…”

Section: Introductionmentioning

confidence: 99%

“…It is known that Cr(VI) is 100 times more toxic than Cr(III) [1]. Cr(VI) is the most stable species in drinking water, and it can have lethal effects on human physiological, neurological and biological systems [1,2,3]. Therefore, the maximum permissible limit of Cr(VI) ions in drinking water has been proposed at 0.1 mg/L [7] .…”

Section: Introductionmentioning

confidence: 99%

“…Low cost biosorbents are becoming the focus of many researches [4]. The plant biosorbents including Acacia albida and Euclea schimperi [13], Cicer arientinum [14], Cupressus lusitanica bark [10], eucalyptus bark [15], helianthus annuus stem waste [16], neem sawdust and mango sawdust [17], mango peels [2], Plataneusorientalis leaves [18], Polyporus squamosus [19], Senna siamea [6], Stipa tenacissima [3], Ulmus leaves [20], and wheat bran [21] etc. have been investigated for removal of Cr(VI) ions from aqueous medium.…”

Section: Introductionmentioning

confidence: 99%

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Calcium alginate entrapped Eupatorium adenophorum Sprengel stems powder for chromium(VI) biosorption in aqueous mediums

Aryal

2019

PLoS ONE

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A novel biosorbent, Eupatorium adenophorum Sprengel-alginate beads was used for chromium(VI) biosorption from aqueous solutions. Biosorption process was optimized at pH 2.0, biomass concentration 1.0 g/L, contact time 60 min, and temperature 30 o C respectively. Maximum uptake capacity of Cr(VI) was calculated at 28.011 mg/g. It was found that the overall biosorption process was best described by pseudo second-order kinetics with high correlation coefficient values. Intraparticle diffusion model suggested that Cr(VI) biosorption may proceed within multiple steps. Data obtained from the batch studies confirmed well to the Langmuir, Temkin, and Hill-der Boer isotherm models. Scatchard plot analysis further supported the mono-layer biosorption of Cr(VI) ions on Eupatorium adenophorum Sprengel-alginate beads as described by Langmuir isotherm model. Numerical values of E obtained from Dubinin-Radushkevich isotherm model identified the physisorption as predominant mechanism for Cr(VI) biosorption. The negative values of Δ G o confirmed the spontaneous and feasibility nature, whereas positive value of Δ H o showed the endothermic nature of biosorption process. Positive value of Δ S o indicated an increase in the randomness at the solid/solution interface during the biosorption process. The endothermic nature of Cr(VI) biosorption was also described by Temkin isotherm model. The results indicated that Cr(VI) biosorption was not significantly affected by the presence of co-ions at lower concentrations. Desorption of Cr(VI) ions from metal-loaded Eupatorium adenophorum -alginate beads was observed at 92.091% with 0.5 M HNO 3 solution in solid to liquid ratio of 1.0 g/L.

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Section: Resultssupporting

confidence: 75%

Section: Resultsmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Calcium alginate entrapped Eupatorium adenophorum Sprengel stems powder for chromium(VI) biosorption in aqueous mediums

Aryal

2019

PLoS ONE

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Sustainable environment through using porous materials: A review on wastewater treatment

Al‐Jubouri

Al‐Batty

Al‐Hamd

et al. 2023

Asia-Pacific J Chem Eng

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Porous materials play an important role in creating a sustainable environment by improving wastewater treatment's efficacy. Porous materials, including adsorbents or ion exchangers, catalysts, metal–organic frameworks, composites, carbon materials, and membranes, have widespread applications in treating wastewater and air pollution. This review examines recent developments in porous materials, focusing on their effectiveness for different wastewater pollutants. Specifically, they can treat a wide range of water contaminants, and many remove over 95% of targeted contaminants. Recent advancements include a wider range of adsorption options, heterogeneous catalysis, a new UV/H2O2 procedure, ion exchange, Fenton oxidation, membrane activities, ozonation, membrane bioreactor, electrochemical treatment, wet air oxidation, and a carbon capture methodology utilizing various porous materials. A particular focus for innovative research is on developing technologies to synthesize porous materials and assess their performance in removing various pollutants from wastewater at varying experimental conditions. Porous materials can be essential in designing wastewater treatment systems to address the critical environmental issues of water stress and safe drinking water worldwide.

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Removal of Methylene Blue and Basic Yellow 28 Dyes from Aqueous Solutions Using Sulphonated Waste Poly Methyl Methacrylate

et al. 2019

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This work focuses on two different environmental problems: the recovery of plastic wastes PMMA (W PMMA) and their application in the removal of textile dyes Methylene Blue (MB) and Basic Yellow 28 (BY28) in aqueous solutions. The selected waste plastic was upgraded to produce an adsorbent suitable for dyes removal. For that, the material was grinded cryogenically up to a particle size of less than 100 μm and treated with sulfuric acid. The sulphonated waste PMMA (SW PMMA) was characterized by FTIR, scanning electronic microscopy (SEM) and chemical composition analysis (C, H, N, O and S content). The formation of sulphonic groups in the material after sulphonation reaction has been successfully demonstrated by FTIR, and can be observed mainly in the region 3087 cm -1 to 3657 cm -1 , where an intense band bound to the stretching of the SO 3 H appeared; another absorption band appeared in the region from 1080 cm -1 to 1271 cm -1 that corresponds to the symmetric stretching of the SO 2 group. The effects of solution pH, initial dyes concentration, adsorbent dose and temperature were studied in batch experiments. The obtained data showed that SW PMMA adsorbent exhibit significant adsorption capacities of 97.09 and 222.

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Adsorption of Cr(VI) on Stipa tenacissima L (Alfa): Characteristics, kinetics and thermodynamic studies

Cited by 16 publications

References 26 publications

Calcium alginate entrapped Eupatorium adenophorum Sprengel stems powder for chromium(VI) biosorption in aqueous mediums

Calcium alginate entrapped Eupatorium adenophorum Sprengel stems powder for chromium(VI) biosorption in aqueous mediums

Sustainable environment through using porous materials: A review on wastewater treatment

Removal of Methylene Blue and Basic Yellow 28 Dyes from Aqueous Solutions Using Sulphonated Waste Poly Methyl Methacrylate

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