Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

Liu, Yuyingnan; Xu, Xinrui; Qu, Bin; Liu, Xiaofeng; Yi, Weiming; Zhang, Hongqiong

doi:10.3390/en14154483

Cited by 24 publications

(10 citation statements)

References 37 publications

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“…Activated carbon with surface area between 500-800 m 2 /g utilized as solution adsorption, meanwhile the wide surface area or wider than 1000 m 2 /g utilized as solution and gas solution. The surface area value of activated carbon after KOH activation was obvious, reaching 2797.75 m2/g and proportion of micropores was extremely larger [17]. The research concluded liquid KOH as activator will resulted activated carbon which can be used for solution, hence solid KOH as activator not only can be used for solution, but also gas.…”

Section: Surface Area Of Activated Carbon From Corn Cobmentioning

confidence: 91%

Corn cob usage as activated carbon using KOH as activator

Agustina,

Yulianto,

Kamil

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The value of agroindustry waste like corn cob can be added as raw material for produced activated carbon. Activated carbon can be used as adsorbent in food, pharmacy, cosmetic industries, and waste water treatment. This research was conducted by using KOH as activator in the activation process for produced of activated carbon from corn cob. The methods include several steps, first step was particle size reduction. Second step was carbonization process in 500° C for an hour. Third step was activation process using solid KOH and liquid KOH, then heated at 900° C. Then, it will be washed until neutral and dried at 105° C. The activated carbon was observed for iodine adsorption, surface area, carbon content and morphology. The result for activation process using solid KOH: optimum iodine adsorption, optimum surface area, and optimum carbon content were 1233.87 mg/g, 2076.141 m2/g, and 93.59 %, respectively. Activation process using liquid KOH: optimum iodine adsorption, optimum surface area, and optimum carbon content were 595.16 mg/g, 716.271 m2/g, and 95.24 %, respectively. The morphology of activated carbon using solid KOH was cleaner and more open (porous). The Activated carbon can be applied for skin care product, like gel peel off mask.

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Section: Surface Area Of Activated Carbon From Corn Cobmentioning

confidence: 91%

Corn cob usage as activated carbon using KOH as activator

Agustina,

Yulianto,

Kamil

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…The atmosphere for carbonization and activation is crucial in KOH‐activated carbon preparation. Nitrogen atmosphere is mostly reported 4, 7, 11, 12, 28, 49, 57, 69, 70, 173–175, 177, 183, 185–187, 190–197 and some researchers did not state the atmospheric condition under which their KOH‐activated carbons were prepared, e.g., Donnaperna et al. 19 Guizhen et al.…”

Section: Common Negligence In Koh‐activated Carbon Methodsmentioning

confidence: 99%

Modification, Production, and Methods of KOH‐Activated Carbon

2022

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This review covers research on the use of potassium hydroxide (KOH) to produce and modify activated carbon. The methods employed for activation by considering the activation process, carbonization, temperature, activation time, and KOH ratio to material are described and how the surface area, surface morphology, and functional groups are affected by the KOH ratio. Characterization techniques and preparation conditions are summarized. The activated carbon pore structure mainly depends on the burn‐off size and the time for activation is linked to the overall activation reaction rate. The increase in surface area and pore size depends on the ratio of KOH, showing that KOH affects the surface chemistry of the activated carbon. The sorbent‐sorbate interactions are strongly influenced by different parameters, which were also calculated in this review and used to evaluate such interactions.

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“…Two types of activated carbons were used for the simulation: CAC and TAC [22]. The BET surface area, cumulative pore volume, pore size, and density for CAC were 1241 m 2 /g, 0.445 cm 3 /g, 2.781 nm, and 2050 kg/m 3 , respectively, whereas for TAC, they were 82 m 2 /g, 0.302 cm 3 /g, 19.756 nm, and 1940 kg/m 3 , respectively [23].…”

Section: Properties Of the Adsorbentsmentioning

confidence: 99%

“…The adsorbents that have been investigated for removal of heavy metals include activated carbon [14], cellulose nanofibers [15], biochar [16], zeolites [17], carbon nanotubes [18], agro-industrial waste materials [19], clay minerals [20], and modified activated carbon [21]. Activated carbon is a desirable adsorbent for heavy metal removal because of its unique features, such as high pore volume and vast surface area [22]. Although a variety of carbon-rich materials can be used to make activated carbon, charcoal is the most common material used in commercial activated carbon manufacturing [23].…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation of lead(II) metal adsorption from water on activated carbons in a packed-bed column

Hameed

Almomani

et al. 2022

Biomass Conv. Bioref.

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In this work, lead(II) adsorption on activated carbons, tire-derived activated carbon (TAC), and commercial activated carbon (CAC), in a packed-bed column, was simulated using the Aspen Adsorption® V11 flowsheet simulator. The simulator was used to model the fixed-bed adsorption column and to establish the breakthrough curves by varying the initial concentration of lead(II) ions (500 mg/L, 1000 mg/L, 2000 mg/L, and 3000 mg/L), the bed height (0.2 m, 0.3 m, 0.4 m, 0.5 m, and 0.6 m), and the flow rate (9.88 × 10−4 m3/s, 1.98 × 10−3 m3/s, 2.96 × 10−3 m3/s, 3.95 × 10−3 m3/s, and 4.94 × 10−3 m3/s), at constant temperature and pressure of 25 °C and 3 bar, respectively. At the optimum conditions of 500 mg/L lead(II) concentration, 0.6 m bed height, and 9.88 × 10−4 m3/s flow rate, the breakthrough times were 488 s and 23 s for TAC and CAC, respectively. Under the same conditions, the adsorption capacity obtained at t0.5 was 114.26 mg/g for TAC and 7.72 mg/g for CAC. The simulation results indicate the potential of TAC for the adsorption of lead(II) in comparison to CAC.

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Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

Cited by 24 publications

References 37 publications

Corn cob usage as activated carbon using KOH as activator

Corn cob usage as activated carbon using KOH as activator

Modification, Production, and Methods of KOH‐Activated Carbon

Dynamic simulation of lead(II) metal adsorption from water on activated carbons in a packed-bed column

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