Biosorption of cationic dye onto "Phragmites australis" fibers: Characterization and mechanism

Dallel, Rania; Kesraoui, Aïda; Seffen, Mongi

doi:10.1016/j.jece.2018.10.024

Cited by 40 publications

(18 citation statements)

References 41 publications

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“…4,5 To quickly and safely deal with mercury pollution, it is urgent to seek relevant methods or materials to solve these problems. Compared to conventional technologies, including membrane filtration, 6 ion exchange, 7 biological adsorption, 8 chemical precipitation, 9 and so on, adsorption method is a lowcost and high-efficiency technology, which can be used to really solve these problems resulted from mercury pollution. 10 For example, activated carbon adsorption columns are often employed at the end of the treatment system of electroplating wastewater containing mercury to remove residual heavy metals and ensure the effluent up to the corresponding standards.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Thiol-Functionalized Magnetic Activated Carbon and Application for the Removal of Mercury(II) from Aqueous Solution

Chen¹,

Zhang²,

Xia³

et al. 2019

ACS Omega

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To improve the adsorption capacity, reduce the disposal cost, and enhance the separation efficiency of common activated carbon as an adsorbent in wastewater treatment, a novel thiol-modified magnetic activated carbon adsorbent of NiFe 2 O 4 -PAC-SH was successfully synthesized with a facile and safe hydrothermal method without any toxic and harmful reaction media. The as-prepared NiFe 2 O 4 -PAC-SH can effectively remove mercury(II) ions from aqueous solution. The maximal adsorption capacities from the experiment and Langmuir fitting achieve 298.8 and 366.3 mg/g at pH 7, respectively, exceeding most of adsorptive materials. The as-prepared NiFe 2 O 4 -PAC-SH has an outstanding regeneration performance, remarkable hydrothermal stability, and efficient separation efficiency. The data of kinetics, isotherms, and thermodynamics show that the adsorption of mercury(II) ions is spontaneous and exothermic. Ion exchange and electrostatic attraction are the main adsorption factors. The experimental results exhibit that the NiFe 2 O 4 -PAC-SH can be a prominent substitute for conventional activated carbon as an adsorbent.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Thiol-Functionalized Magnetic Activated Carbon and Application for the Removal of Mercury(II) from Aqueous Solution

Chen¹,

Zhang²,

Xia³

et al. 2019

ACS Omega

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“…In addition, it is well known that physisorption, such as van der Waals interactions, has usually ΔG values lower than -20 kJ mol -1 , and electrostatic interaction ranges from -20 to -80 kJ mol -1 . Chemisorption band strengths can be found in the range from -80 to -400 kJ mol -1 [58,59]. Referring to the results in Table 6, and even at different temperatures, considering the values of ΔG, the biosorption of PS by FS confirms that the process is a physisorption one.…”

Section: Temperature Effect and Thermodynamic Parametersmentioning

confidence: 52%

Fish scale of Sardina pilchardus as a biosorbent for the removal of Ponceau S dye from water: Experimental, designing and Monte Carlo investigations

Jaafar

Darchen²,

Driouich³

et al. 2022

Inorganic Chemistry Communications

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“…The point of zero charge is the pH at which the surface of biomass has zero electrical charge density. The surface of biomass has positive charge below pHzpc while the surface becomes negatively charged above the pHzpc 42 . According to the literature cations removed more favorably at pH greater than pHzpc whereas anions removed more favorably at pH below pHzpc 43 .…”

Section: Resultsmentioning

confidence: 99%

Mechanisms of halosulfuron methyl pesticide biosorption onto neem seeds powder

Saeed

Usman

Zahoor

et al. 2021

Sci Rep

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The current investigation was designed to remove halosulfuron methyl from aqueous media by means of neem seed powder (NSP) in batch modes. Characterizations of NSP were carried out by using EDX, SEM, FTIR, point of zero charge and surface analysis. Optimum operation conditions were scrutinized by studying the influence of different factors like solution pH, dose of NSP, contact time, initial halosulfuron methyl concentration and temperature. Result indicates the dependency of the removal of halosulfuron methyl on solution pH and maximal removal (54%) was achieved in acidic medium (i.e. pH 3.0). To identify the chemical surface of NSP, point of zero charge of NSP was determined and was found to be 6.5 which imply that the surface of NSP is positively charged below pH 6.6 and favored the anionic sorption. Kinetics of halosulfuron methyl were demonstrated well by pseudo second order due to highest R2 (0.99) owing to the nearness between experimental and calculated sorption capacities. Isotherm results imply that Langmuir was found to the principal model to explain the removal of halosulfuron methyl and maximum monolayer sorption capacity was determined to be 200 mg g−1. Thermodynamic parameters like ΔH°, ΔG° and ΔS° were calculated from van’t Hoff plot and were found negative which suggest that removal of halosulfuron methyl is exothermic and spontaneous at low temperature. These outcomes insinuate that neem seed power may be a valuable, inexpensive and ecofriendly biosorbent for the removal of pesticides.

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Biosorption of cationic dye onto "Phragmites australis" fibers: Characterization and mechanism

Cited by 40 publications

References 41 publications

Facile Synthesis of Thiol-Functionalized Magnetic Activated Carbon and Application for the Removal of Mercury(II) from Aqueous Solution

Facile Synthesis of Thiol-Functionalized Magnetic Activated Carbon and Application for the Removal of Mercury(II) from Aqueous Solution

Fish scale of Sardina pilchardus as a biosorbent for the removal of Ponceau S dye from water: Experimental, designing and Monte Carlo investigations

Mechanisms of halosulfuron methyl pesticide biosorption onto neem seeds powder

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