RETRACTED: Removal of nitrate from groundwater by column using pumice as adsorbent as an effort for water resources conservation

Helard, Denny; Indah, Shinta; Kiflia, Dhea Pratiwi

doi:10.1088/1757-899x/846/1/012059

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…The breakdown curve of a continuous fixed bed column can be used to estimate the efficiency of the sorption process [28]. The breakthrough curve is described as Ct / C0 against the contact time (t), where C0 (mg dm -3 ) represents the inlet concentration and Ct (mg dm -3 ) the outlet concentration of the nitrate solution at time t (min).…”

Section: Mathematical Studiesmentioning

confidence: 99%

The fixed bed column sorption study for the nitrate removal by a cationic modified inedible pumpkin shell

Marković-Nikolić¹,

Petković²,

Ristić³

et al. 2020

Adv Techol

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A fixed bed column was applied to remove nitrate ions from an aqueous solution using a cationic modified pumpkin shell as a sorbent. The fixed bed column performances were assessed by varying the influent nitrate concentrations (50 mg dm-3 and 100 mg dm-3) and flow rates (20 cm 3 min-1 and 40 cm 3 min-1) with 13 cm bed height of the sorbent. The obtained results showed that increase of the concentration of the initial nitrate solution affects the increase in the amount of nitrate in the effluent and reduces the breakthrough time. A higher flow rate led to the faster column exhaustion, resulting in the shortened lifespan of the column. In this study, the best nitrate removal was achieved for an initial nitrate solution of 100 mg dm-3 at the flow rate of 20 cm 3 min-1 , when a total nitrate removal of 86% is reached. The relationship between the sorption capacity of this sorbent and the varied parameters was assessed and predicted using two different theoretical breakthrough curve models: the Thomas and Yoon-Nelson models. This study confirmed that the cationic modified pumpkin shell in the fixed bed column has good potential for removing nitrate from aqueous solutions.

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Section: Mathematical Studiesmentioning

confidence: 99%

The fixed bed column sorption study for the nitrate removal by a cationic modified inedible pumpkin shell

Marković-Nikolić¹,

Petković²,

Ristić³

et al. 2020

Adv Techol

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“…Adsorption is an effective technique for nitrate removal, as it is an effective alternative for removing ions from water, economical, easy design, and operation as well as low costs [5][6][7]. For nitrate removal, different adsorbents have been studied [8] such as geomaterials like kaolinite [9], and pumice [10,11].…”

Section: Introductionmentioning

confidence: 99%

Removal of nitrate using modified pumice as adsorbent for reducing groundwater pollution

et al. 2021

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Nitrate adsorption onto the physically and chemically modified pumice was investigated as an effort for reducing groundwater pollution. The treatments were heating at temperatures of 300°C, 450°C, and 600°C for physical and soaking in acid solutions (HCl, H2SO4, and HNO3) for chemical treatments. The adsorption was performed in a batch system at room temperature (25±1°C) with the optimum condition (pH 4; 0.3 g/L of adsorbent dose; <63 µm of adsorbent diameters and 30 minutes of contact time). The results indicated that the physically and chemically modified pumice resulted in increasing removal efficiency and nitrate uptake compared to the natural pumice. The highest removal efficiency and nitrate uptake were achieved from 300°C of heating temperatures (62.04% and 155.09 mg/g) and H2SO4 for the acid solution (83.30% and 208.25 mg/g), while by using the natural pumice only reached 57.02 % and 142.55 mg/g. The SEM images of the modified pumice confirmed the change in the surface morphology of pumice including the pore structure and surface area which can be proper sites for adsorption of pollutants. This study demonstrated that physical and chemical modification could be the potential treatment to increase the removal efficiency and nitrate uptake of the natural pumice, thus can solve the problem of groundwater pollution.

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A comparative study on desorption of iron and chromium ions and regeneration of the exhausted pumice adsorbent

Indah,

Helard,

Binuwara

et al. 2024

3RD CONFERENCE ON INNOVATION IN TECHNOLOGY AND ENGINEERING SCIENCE 2022 (CITES2022): Innovation in Technology and Science for N

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RETRACTED: Removal of nitrate from groundwater by column using pumice as adsorbent as an effort for water resources conservation

Cited by 3 publications

References 15 publications

The fixed bed column sorption study for the nitrate removal by a cationic modified inedible pumpkin shell

The fixed bed column sorption study for the nitrate removal by a cationic modified inedible pumpkin shell

Removal of nitrate using modified pumice as adsorbent for reducing groundwater pollution

A comparative study on desorption of iron and chromium ions and regeneration of the exhausted pumice adsorbent

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