Removal of elemental mercury using large surface area micro-porous corn cob activated carbon by zinc chloride activation

Duan, Xuelei; Yuan, Chun-Gang; Jing, Tian-Tian; Yuan, Xiaoping

doi:10.1016/j.fuel.2018.11.017

Cited by 100 publications

(35 citation statements)

References 54 publications

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“…For constant initial dye concentration, with increasing the adsorbent dosage the interfacial tension between both phases increases and, as a consequence, the driving force for the mass transfer decreases, reducing in this way the adsorption capacity. It is worth noting that the high specific surface area and porosity of both biosorbents conferred a great removal efficiency of dye also at relatively low adsorbent dosages as stated by previous works [42][43][44][45].…”

Section: Effect Of Adsorbent Dosagementioning

confidence: 84%

Comparative assessment of methylene blue biosorption using coffee husks and corn cobs: towards the elaboration of a lignocellulosic-based amperometric sensor

et al. 2019

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The ability of coffee husks (CHs) and corn cobs (CCs) as biosorbents for methylene blue (MB) was investigated in batch mode. The energy dispersive X-ray spectroscopy was used for the determination of elemental composition of both biosorbents. Sorption experiments were carried out as a function of temperature, pH and MB initial concentration. Adsorption capacities of both materials significantly increased with the MB initial concentration. Among the various kinetic and adsorption isotherm models, the experimental adsorption data were best fitted in pseudo-second-order kinetic model and Langmuir isotherm model. The maximum adsorption capacities at room temperature were found to be 79.60 and 73.16 mg g −1 for CHs and CCs respectively. Moreover, the great affinity of MB towards CHs led to deep electrochemical experiments shown that CHs can be used as prominent modifier for a carbon paste electrode (CPE). The linear dynamic range of MB was found within the concentration range of 1-125 µmol/L with a detection limit (3σ) of 3 μM. The elaborated sensor was successfully applied for the determination of adsorption capacities of CHs placed into a column for MB biosorption in river water, suggesting that CH-CPE could be an efficient tool for MB detection in environmental samples.

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Section: Effect Of Adsorbent Dosagementioning

confidence: 84%

Comparative assessment of methylene blue biosorption using coffee husks and corn cobs: towards the elaboration of a lignocellulosic-based amperometric sensor

et al. 2019

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“…Biochar has been employed in agricultural fields also for eliminating soil pollutants. Many agricultural residues have been utilized for producing biochar such as rice straw [ 48 ], wheat straw [ 49 ], waste wood [ 50 ], sugar beet tailings [ 51 ], corn cob [ 52 ], etc. These biomasses are composed of mostly cellulose, hemicellulose and lignin components.…”

Section: Introductionmentioning

confidence: 99%

A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy

Yaashikaa¹,

Kumar²,

Varjani

et al. 2020

Biotechnology Reports

526

186

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“…In addition, H3PO4 provides an easier way to recover the carbon product during processing stage by rinsing with water (Yahya et al 2015). Compared with other activating compounds such as KOH (Mao et al 2015), ZnCl2 (Duan et al 2019), and K2CO3 (Mao et al 2020), it also gives higher yield of activated carbon and has non-toxic properties (Romero-Anaya et al 2012). The H3PO4 method has been used for almost 40 years.…”

Section: Introductionmentioning

confidence: 99%

Effect of activation temperature on properties of H3PO4-activated carbon

Sun

Liu

et al. 2021

BioRes

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The effects of different activation temperatures (Ta), ranging from 300 to 750 °C, on the ash content, yield, ignition point, microcrystalline structure, surface functional group, pore structure, and adsorption performance of activated carbon in preparing activated carbon by phosphoric acid (H3PO4) were systematically studied. The yield and volatile content of activated carbon decreased with the increase of Ta, while the ash content, ignition point, and graphitization degree showed the opposite results. The turning point of ash content increasing rate of activated carbon occurred at 500 °C. The thermal decomposition temperature of phosphonate compounds was approximately 450 °C. With increased Ta, micropores were generated first, followed by mesopores. The ignition point of activated carbon was related to the volatile content and the degree of graphitization. Activated carbon with low ash content, high yield, well-developed pore structure and good adsorption performance was prepared at 350 to 425 °C. With increased Ta, the volatile content decreased, and the ignition point of activated carbon increased. At Ta higher than 500 °C, the aromatic and condensed ring structure, graphitization degree, and mesopore ratio of the activated carbon increased, yielding decreased adsorption performance.

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Removal of elemental mercury using large surface area micro-porous corn cob activated carbon by zinc chloride activation

Cited by 100 publications

References 54 publications

Comparative assessment of methylene blue biosorption using coffee husks and corn cobs: towards the elaboration of a lignocellulosic-based amperometric sensor

Comparative assessment of methylene blue biosorption using coffee husks and corn cobs: towards the elaboration of a lignocellulosic-based amperometric sensor

A critical review on the biochar production techniques, characterization, stability and applications for circular bioeconomy

Effect of activation temperature on properties of H3PO4-activated carbon

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