Comparative analysis of Activated Corn Cob and Bentonite Clay for the Removal of Lead and Nickel from Raw Water

Uchechi, Akomah,; Nwaogazie, Ify Lawrence; Akaranta, Onyewuchi; David, Adekunle Olorunlowo

doi:10.2478/sjce-2021-0011

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…They evaluated the efficiency of activated corn cob and bentonite clay for lead and nickel removal from raw water. 20,21 Xanthate corn cob for cationic pollutants removal has been reported. 22 However, water purification technology reported to date based on corn cob is not completely green, flexible, and portable.…”

Section: Introductionmentioning

confidence: 99%

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An all‐green cellulose acetate/corn cob composite membrane filter: A critical evaluation of its morphology and adsorption characteristics for dyes and heavy metals

Aswathy,

Sen,

Mongaraj

et al. 2024

J of Applied Polymer Sci

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Industrial wastewater from various manufacturing sectors poses a significant environmental concern due to the release of dyes, heavy metals, and pollutants into natural water streams. Effective treatment of large volumes of industrial wastewater is crucial to mitigate this issue. Conventional industrial wastewater filtration systems often prove to be inefficient, necessitating the exploration of alternative and cost‐effective water filtration methods. In this study, we drew inspiration from the natural adsorption and purification properties of corncob to develop a novel green composite membrane filter. The composite membrane filters, named MCAPCB and MCATPCB, were formulated by incorporating powdered corncob (PCB) and alkali/hydrogen peroxide‐treated powdered corncob (TPCB) into cellulose acetate. The adsorption properties of the composite filters were evaluated using UV–Vis spectrophotometry for dye adsorption and inductively coupled plasma optical emission spectroscopy (ICP‐OES) and atomic absorption spectroscopy (AAS) for heavy metal adsorption. The results demonstrated that MCATPCB20, incorporating 20 wt% TPCB, exhibited remarkable performance in the removal of methylene blue dye, with an adsorption efficiency of 97.46%. In comparison, MCAPCB20, incorporating 20 wt% PCB, achieved a dye adsorption efficiency of 80.15%. Moreover, MCATPCB20 displayed exceptional heavy metal removal capabilities, effectively rejecting 98% and 95% of cadmium and lead, respectively, from water samples containing 1 ppm of each metal. The composite filter membranes containing 20 wt% TPCB exhibited superior adsorption efficiency, flexibility, and stability. This enhanced performance can be attributed to the higher carboxyl content in TPCB, achieved through alkali treatment, which significantly increased the adsorption capacity of MCATPCB20. Characterization studies employing XRD, SEM, contact angle, BET, ICP‐OES, and UV measurements further supported the efficacy of MCATPCB as an effective filter system for water purification.

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Section: Introductionmentioning

confidence: 99%

“…Corn cob‐based biochar is used as an efficient and low‐cost adsorbent for Pb 2+ ions removal. They evaluated the efficiency of activated corn cob and bentonite clay for lead and nickel removal from raw water 20,21 . Xanthate corn cob for cationic pollutants removal has been reported 22 .…”

Section: Introductionmentioning

confidence: 99%

An all‐green cellulose acetate/corn cob composite membrane filter: A critical evaluation of its morphology and adsorption characteristics for dyes and heavy metals

Aswathy,

Sen,

Mongaraj

et al. 2024

J of Applied Polymer Sci

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“…Both are related to crystal composition. This can be used as adsorbent because of its high porosity, particularly in the micro and meso ranges (Herawan, et al, 2013;Opafola, et al 2021;Akomah, et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Bio-Adsorption of Heavy Metal Ion From Water Using Activated Carbon

David,

Omotosho,

Opafola

et al. 2024

Kufa J. Eng.

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The discharge of effluent polluted with heavy metals have become a growing concern for researchers around the world. This study evaluated the removal efficiency of commercial activated carbon and rice husk activated carbon as adsorbents for the removal of copper ion in water. A nominal size of 1 mm was obtained after sieving the Rice Husk, washed with distilled water, dried in an oven t at 80 ℃ for 12 hours, and pyrolyzed in a furnace at 550 ℃ for 30 minutes. The chars produced were later air-dried and then activated with lemon juice. The Rice Husk Activated Carbon (RHAC) and Commercial Activated Carbon (CAC) purchased from the market were both subjected to the following analyses: bulk density, X-ray Fluorescence (XRF), Brunauer–Emmett–Teller (BET), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray (EDX) in order to characterise the adsorbents and to understand their suitability for the removal of copper ion in water. One of the properties of an adsorbent is large pores which is exhibited by the activated carbons as revealed by the SEM analysis. Likewise, the XRF and EDX analyses confirmed that the adsorbents had larger proportion of Silica (50.1 – 50.25%), Carbon (60.06 – 84.87 wt .%) and Oxygen (15.13 – 21.60 wt. %) which is a property of a good adsorbent. BET analysis showed that the surface areas of the rice husk activated carbon and the commercial activated carbon were 998.35 and 1208.25 m2/g, respectively. The bulk densities of the rice husk activated carbon and the commercial activated carbon were 0.3325 and 0.2812 g/cm3, respectively. The maximum removal efficiency using RHAC was observed at 60 ℃ and 120 minutes at 83.96 and 89.21 %, respectively while for CAC the maximum removal efficiency was observed at 60 ℃ at 84.61 % and 30 minutes at 83.3 %. Initial concentration of 20 mg/l was observed to have the highest removal efficiency for the two activated carbon specimens. The modelled effect of initial concentration, temperature and contact time on removal efficiency yielded R2 values of 1, 0.918; 1,1 and 1,1 respectively for the CAC and RHAC.

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All-green Cellulose acetate/corn-cob Composite Membrane Filter with Combative Dye and Heavy Metal Adsorption Property

Aswathy¹,

Sen²,

Mongaraj³

et al. 2022

Preprint

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From ancient times water bodies witnessed expel of a large number of pollutants and heavy metals from the nearest industries. To alleviate this concern wastewater from all industrial sectors requires treatment before discharging into natural water streams. Inspired by the natural adsorbent ‘corn-cob’ a novel all-green corn-cob/cellulose acetate (MCAPCB) composite membrane filter has been developed. The corn-cob, a food waste obtained after the consumption of corn acts as a filler as well as an adsorbent in the cellulose acetate membrane (MCA). The corn cob powder (PCB) and the alkali/hydrogen peroxide treated corn cob powder (TPCB) were incorporated into the MCA at various compositions and comparative dye adsorption capacities were analyzed. It was observed that 20 % PCB can be incorporated into the cellulose matrix without affecting the flexibility of the membrane. 0.5 grams of 20% TPCB incorporated CA membrane (MCATPCB20) achieved the highest methylene blue adsorption performance up to 97.46. 20% PCB incorporated CA membrane (MCAPCB20) exhibited adsorption of methylene blue up to 80.15% from the water. The adsorption efficiency of MCATPCB20 has been enhanced due to the increase in carboxyl content after the bleaching of PCB. The atomic absorption spectroscopy (AAS) and inductively coupled plasma spectroscopy (ICP-MS) studies of feed and filtrate solutions after microfiltration through MCATPCB20 proved that the developed films can be harnessed into an excellent material for cadmium (Cd) and lead (Pb) heavy metal adsorption. These results reveal that MCATPCB is a green, sustainable, effective, and efficient filter system for water purification.

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Comparative analysis of Activated Corn Cob and Bentonite Clay for the Removal of Lead and Nickel from Raw Water

Cited by 4 publications

References 11 publications

An all‐green cellulose acetate/corn cob composite membrane filter: A critical evaluation of its morphology and adsorption characteristics for dyes and heavy metals

An all‐green cellulose acetate/corn cob composite membrane filter: A critical evaluation of its morphology and adsorption characteristics for dyes and heavy metals

Bio-Adsorption of Heavy Metal Ion From Water Using Activated Carbon

All-green Cellulose acetate/corn-cob Composite Membrane Filter with Combative Dye and Heavy Metal Adsorption Property

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