Rice husk as a low cost nanosorbent for 2,4-dichlorophenoxyacetic acid removal from aqueous solutions

Abigail, M. Evy Alice; Chidambaram, Ramalingam

doi:10.1016/j.ecoleng.2016.03.020

Cited by 47 publications

(1 citation statement)

References 26 publications

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“…The adsorption capacity of biochar iron composite was found to be highest for all pesticides [123]. In another study, the efficiency of rice husk agro waste in nano-sorbent form for removal of 2,4 D was 96.87% removal of the contaminant at pH 5.0, temperature 30°C, the adsorbent dosage of 1.5 g/l attaining an equilibrium within an hour [71].…”

Section: Smentioning

confidence: 93%

Use of Agricultural Solid Wastes as Adsorbents

Bhardwaj

Babu

Pandey

et al. 2018

Organic Pollutants in Wastewater I

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Biosorption through agricultural lignocellulosic wastes and by-products has been identified as a viable substitute to current technologies applied to remove toxic metal ion and organic pollutants from water and wastewater. The present study emphasizes the use of agricultural and agro-industries based residues as low-cost biosorbents. The study aims to revisit the status of biosorption and various recent advances made in this arena. Biomasses are the main focuse of this study which requires substantial management. Further, this is supplemented with the physicochemical processing of such biomasses and their application in adsorption. The surge in biomass to energy applications in recent years has resulted in charred biomass production as a residual. These biochars have been used as adsorbents. The biosorbents have been divided into the following three groups: (i) raw biomass, (ii) processed biomass and (iii) charred biomass. The affinity of sorbents in the removal of organic and inorganic pollutants and their applications on water and wastewater have also been studied.

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Section: Smentioning

confidence: 93%

Use of Agricultural Solid Wastes as Adsorbents

Bhardwaj

Babu

Pandey

et al. 2018

Organic Pollutants in Wastewater I

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Biosorption of Dye by Malt Bagasse in a Fixed-Bed Column: Experimental and Theoretical Breakthrough Curves

Juchen

Veit

Gonçalves

et al. 2021

Water Air Soil Pollut

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A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study

Amiri

Bahrami

Beigzadeh

et al. 2018

Environ Sci Pollut Res

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The potential of a granular activated carbon (GAC), a rice husk biochar (BRH) and multiwalled carbon nanotubes (MWCNTs) for removing 2,4-dichlorophenoxyacetic acid (2,4-D) from simulated wastewater and drainage water has been evaluated. In this regard, a response surface methodology (RSM) with a central composite design (CCD) (CCD-RSM design) was used to optimize the removal of 2,4-D from simulated wastewater under different operational parameters. The maximum adsorption capacities followed the order GAC > BRH > MWCNTs, whereas the equilibrium time increased in the order MWCNTs < GAC < BRH. In the case of GAC and BRH, the 2,4-D removal percentage increased significantly upon increasing the adsorbent dosage and temperature and decreased upon increasing the initial 2,4-D concentration and pH. The results showed that the contact time and temperature were not important as regards the adsorption efficiency of 2,4-D by MWCNTs, whereas rapid removal of 2,4-D from simulated wastewater was achieved within the first 5 min of contact with the MWCNTs. The results confirmed that the Freundlich isotherm model with the highest coefficient of determination (R 2 ) and the lowest standard error of the estimate (SEE) satisfactorily fitted the 2,4-D experimental data. In addition, successful usage of the three adsorbents investigated was observed for removal of 2,4-D from drainage water from an agricultural drainage system. An economic analysis with a rate of return (ROR) method indicated that BRH could be used as an eco-friendly, low-cost, versatile and high adsorption capacity alternative to GAC and MWCNTs for the removal of 2,4-D.

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Rice husk as a low cost nanosorbent for 2,4-dichlorophenoxyacetic acid removal from aqueous solutions

Cited by 47 publications

References 26 publications

Use of Agricultural Solid Wastes as Adsorbents

Use of Agricultural Solid Wastes as Adsorbents

Biosorption of Dye by Malt Bagasse in a Fixed-Bed Column: Experimental and Theoretical Breakthrough Curves

A response surface methodology for optimization of 2,4-dichlorophenoxyacetic acid removal from synthetic and drainage water: a comparative study

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