Removal characteristics of copper by marine macro-algae-derived chars

Cho, Hye‐Kyung; Baek, Kitae; Jeon, Jong‐Ki; Park, Sunghoon; Suh, Dong Jin; Park, Young-Kwon

doi:10.1016/j.cej.2012.11.123

Cited by 71 publications

(34 citation statements)

References 38 publications

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“…Furthermore, they have high selectivity toward the removal of various heavy metal ions, such as gold, cadmium, copper, and zinc (they have exceptional metal binding capacity), making them potential biosorbent materials [49,50]. Seaweed-derived biochar has recently been used for the removal of copper ions in wastewater [46,47,[51][52][53]. To the best of the authors' knowledge, however, seaweed biochar has never been used for the removal of air pollutants, such as formaldehyde and nitrogen oxide.…”

Section: Characterization Of the Charmentioning

confidence: 99%

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Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Lee¹,

Park²,

Lee³

et al. 2016

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As a replacement for activated carbon, biochar was synthesized and used for the adsorptive removal of formaldehyde and nitrogen oxide. Biochar was produced from the fast pyrolysis of the red marine macro alga, Pyropia tenera. The P. tenera char was then activated with steam, ammonia and KOH to alter its characteristics. The adsorption of formaldehyde, which is one of the main indoor air pollutants, onto the seaweed char was performed using 1-ppm formaldehyde and the char was activated using a range of methods. The char activated with both the KOH and ammonia treatments showed the highest adsorptive removal efficiency, followed by KOH-treated char, ammonia-treated char, steam-treated char, and non-activated char. The removal of 1000-ppm NO over untreated char, KOH-treated char, and activated carbon was also tested. While the untreated char exhibited little activity, the KOH-treated char removed 80% of the NO at 50°C, which was an even higher NO removal efficiency than that achieved by activated carbon.

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Section: Characterization Of the Charmentioning

confidence: 99%

“…On the other hand, it has an important drawback: its specific surface area, and therefore its adsorption capacity, is smaller than that of activated carbon. Various activation treatment methods have been proposed to enhance the adsorption capacity of biochar [16,46].…”

Section: Characterization Of the Charmentioning

confidence: 99%

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Lee¹,

Park²,

Lee³

et al. 2016

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“…Wastewater and sludge produced from these processes contain various concentrations of copper ions, having adverse effects on the aquatic environment. Copper ions are harmful to human health even at low concentrations, and absorption of excessive copper ions can cause ailments such as Wilson disease [14].…”

Section: Cu 2+ Removal Experimentsmentioning

confidence: 99%

“…Physical and chemical activations were used to activate the RC [14,24]. In the physical activation, RC was treated in a fixed-bed reactor with a moisture concentration of 40 vol% and a temperature of 700°C.…”

Section: Preparation and Characterization Of Rdf Char Samplesmentioning

confidence: 99%

“…The most commonly used adsorbent is activated carbon [15][16][17][18][19][20][21]. Among the alternative adsorbents that can replace activated carbon, biochar, a by-product of biomass pyrolysis, has recently received extensive attention because of its low cost [14,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41].…”

Section: Cu 2+ Removal Experimentsmentioning

confidence: 99%

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Cu²⁺ion reduction in wastewater over RDF-derived char

Lee¹,

Park²,

Park³

et al. 2016

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Refuse-derived fuel (RDF) produced using municipal solid waste was pyrolyzed to produce RDF char. For the first time, the RDF char was used to remove aqueous copper, a representative heavy metal water pollutant. Activation of the RDF char using steam and KOH treatments was performed to change the specific surface area, pore volume, and the metal cation quantity of the char. N 2 sorption, Inductively Coupled Plasma-Atomic Emission Spectrometer (ICP-AES), and Fourier transform infrared spectroscopy were used to characterize the char. The optimum pH for copper removal was shown to be 5.5, and the steam-treated char displayed the best copper removal capability. Ion exchange between copper ions and alkali/alkaline metal cations was the most important mechanism of copper removal by RDF char, followed by adsorption on functional groups existing on the char surface. The copper adsorption behavior was represented well by a pseudo-second-order kinetics model and the Langmuir isotherm. The maximum copper removal capacity was determined to be 38.17 mg/g, which is larger than those of other low-cost char adsorbents reported previously.

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Biotechnology for Sustainable Remediation of Contaminated Wastewater

Hajam

2023

Aquatic Contamination

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Removal characteristics of copper by marine macro-algae-derived chars

Cited by 71 publications

References 38 publications

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Cu²⁺ion reduction in wastewater over RDF-derived char

Biotechnology for Sustainable Remediation of Contaminated Wastewater

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Removal characteristics of copper by marine macro-algae-derived chars

Cited by 71 publications

References 38 publications

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Adsorptive removal of atmospheric pollutants over Pyropia tenera chars

Cu2+ion reduction in wastewater over RDF-derived char

Biotechnology for Sustainable Remediation of Contaminated Wastewater

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Cu²⁺ion reduction in wastewater over RDF-derived char