High removal efficacy of Hg(II) and MeHg(II) ions from aqueous solution by organoalkoxysilane-grafted lignocellulosic waste biomass

Saman, Norasikin; Johari, Khairiraihanna; Song, Shiow Tien; Kong, Helen; Cheu, Siew Chin; Mat, Hanapi

doi:10.1016/j.chemosphere.2016.12.049

Cited by 45 publications

(20 citation statements)

References 48 publications

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“…The process of adsorption of heavy metals with cellulose is interesting due to its abundant availability and its great potential in removing heavy metals present in water, demonstrating in experimental processes in the treatment of water (Chitpong et al 2017;Putro et al 2017a, b;Lu et al 2017;Pillai et al 2013;Saman et al 2017). The presence in the cellulose of hydroxyl (OH), amino (NH 2 ), and carboxyl (C=O) groups facilitate the adsorption of heavy metals through cation exchange (Lin et al 2018;Anirudhan et al 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Different types of biomass have the ability to adsorb heavy metals, for example, chitosan (Zhou et al 2014) coconut residues (Pillai et al 2013), banana (Saman et al 2017), bacterial cellulose (Baldikova et al 2017;Jin et al 2017), plant cellulose from camphor leaf (Cinnamomum camphora) (Wang et al 2018), and cellulose from Eichhornia crassipes (Gupta and Balomajumder 2015;Hadad et al 2011;Swain et al 2014;Borker et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Estimation of equilibrium times and maximum capacity of adsorption of heavy metals by E. crassipes (review)

Sayago

Castro

Rivera

et al. 2020

Environ Monit Assess

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Cellulose emerges as an alternative for the treatment of water contaminated with heavy metals due to its abundant biomass and its proven potential in the adsorption of pollutants. The aquatic plant Eichhornia crassipes is an option as raw material in the contribution of cellulose due to its enormous presence in contaminated wetlands, rivers, and lakes. The efficiency in the removal of heavy metals is due to the cation exchange between the hydroxyl groups and carboxyl groups present in the biomass of E. crassipes with heavy metals. Through different chemical and physical transformations of the biomass of E. crassipesThe objective of this review article is to provide a discussion on the different mechanisms of adsorption of the biomass of E. crassipes to retain heavy metals and dyes. In addition to estimating equilibrium, times through kinetic models of adsorption and maximum capacities of this biomass through equilibrium models with isotherms, in order to design one biofilter for treatment systems on a larger scale represented the effluents of a real industry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estimation of equilibrium times and maximum capacity of adsorption of heavy metals by E. crassipes (review)

Sayago

Castro

Rivera

et al. 2020

Environ Monit Assess

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“…Basically, an adsorption process involves four steps: (1) bulk diffusion; (2) film diffusion; (3) intraparticle diffusion; and (4) chemical interaction. The first three steps are categorized as physical phenomena (or diffusion steps), while the fourth step corresponds to the chemical interactions (i.e., chemical phenomenon) . The bulk diffusion occurs in bulk liquid phase followed by the film diffusion through the liquid/boundary film at the outer adsorbent surfaces and the intraparticle diffusion in the pores of the adsorbent particles.…”

Section: Resultsmentioning

confidence: 99%

“…Many studies have been conducted using low-cost materials such as agrowastes [5][6][7][8], sewage sludge carbon [9], industrial wastes [10,11], peats and soils [12] for removing mercury ions from aqueous solutions and wastewaters. Several chemical modifications [8,[13][14][15][16][17] and thermochemical processes [18][19][20] have been performed to increase the adsorption performance of the pristine adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye‐affinity adsorbents

Saman

Johari

Song

et al. 2018

Env Prog and Sustain Energy

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Adsorption of inorganic mercury [Hg(II)] and organic methylmercury [MeHg(II)] ions onto dye‐affinity agrowaste (dye‐AW) was investigated. The dye‐affinity adsorbents were prepared by the chemical‐thermal reaction between the agrowaste (AW) and dye solutions [i.e., Reactive Red 120 (RR), Reactive Black B (RB), Methylene Blue (MB), and Methyl Orange (MO)] under an alkaline condition. An almost perfect removal of Hg(II) was observed for all adsorbents, while for MeHg(II), the dye‐affinity adsorbents have a higher removal efficiency than a pristine adsorbent. The maximum adsorption capacity (Qe, max) of mercury ions onto the Reactive Red 120‐modified AW (RR‐AW) was 2.60 mmol g−1 for Hg(II) and 0.76 mmol g−1 for MeHg(II). The adsorption rate of Hg(II) was faster than MeHg(II), and both kinetic data followed the pseudo‐second order kinetic model with the diffusion steps controlled by the film diffusion. The regenerated adsorbent showed very encouraging results especially toward Hg(II). The promising results were also obtained by using oilfield produced water (OPW) and natural gas condensate (NGC) samples. These studies finally demonstrated that the agricultural wastes initially loaded with dyes have the potential to be good mercury adsorbents. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S54–S67, 2019

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“…The values calculated for the process steps are shown in Table 9. For the stage of the process where adsorption capacity is favoured with the increase in temperature, a positive value of ∆H is obtained, which indicates that the process is endothermic; negative values of ∆G reveal that the adsorption process of Ni (II) with palm bagasse occurs spontaneously according to Mushtaq et al 39 ,Saleh et al 40 and Saman et al 41 . The magnitude of the value of ∆H indicates that the process occurs by physical adsorption.…”

Section: Calculation Of Thermodynamic Parametersmentioning

confidence: 99%

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

2018

IJCTR

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: Heavy metals are pollutants released into the environment, and are highly available as a result of the increase in different activities where they are used, so their presence in aqueous media causes worldwide concern, as they pose a serious threat to ecosystems by being non-biodegradable, toxic and carcinogenic to living beings. The present work evaluated the effect of temperature and pH on the capacity of African palm bagasse (Elaeis guineensis) to remove nickel present in aqueous solutions, studying the kinetics, equilibrium and thermodynamic parameters that determine the process. For this purpose, it was tested in batch system by varying the temperature and pH of the solution, keeping constant the agitation rate (200 rpm), adsorbent dose (5 g *100ml -1 ), initial metal concentration (100 ppm) and the size of the adsorbent (0.1 mm). It was found that the best adsorption conditions were 54.9 ºC and pH 5.93, obtaining a maximum adsorption capacity of 17.01 mg g -1 corresponding to a removal of 85.14 %. The kinetic model that best fits the experimental data was Elovich and the isotherm that best describes the process is Freundlich, with R 2 of 0.9967 and 0.999, respectively. The determined thermodynamic parameters (∆H 0 , ∆G 0 , ∆S 0 ) suggest that the process is favorable, spontaneous, endothermic and reversible under certain operating conditions. The results show that palm bagasse is a good precursor of Nickel adsorbent.

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High removal efficacy of Hg(II) and MeHg(II) ions from aqueous solution by organoalkoxysilane-grafted lignocellulosic waste biomass

Cited by 45 publications

References 48 publications

Estimation of equilibrium times and maximum capacity of adsorption of heavy metals by E. crassipes (review)

Estimation of equilibrium times and maximum capacity of adsorption of heavy metals by E. crassipes (review)

Enhanced adsorption capacity and selectivity toward inorganic and organic mercury ions from aqueous solution by dye‐affinity adsorbents

Study of the Effect of Temperature in the Remotion of NI (II) on African Palm Bagasse (Elaeis guineensis)

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