Cu²⁺ ion reduction in wastewater over RDF-derived char

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon Letters / 18권 / 1호
ㆍ저자명 : Hyung Won Lee, Rae-su Park, Sung Hoon Park, Sang-Chul Jung, Jong-Ki Jeon, Sang Chai Kim, Jin Do Chung, Won Geun Choi, Young-Kwon Park

목차

1. Introduction
2. Experimental
3. Results and Discussion
4. Conclusions
References

한국어 초록

Refuse-derived fuel (RDF) produced using municipal solid waste was pyrolyzed to produceRDF char. For the first time, the RDF char was used to remove aqueous copper, arepresentative heavy metal water pollutant. Activation of the RDF char using steam andKOH treatments was performed to change the specific surface area, pore volume, andthe metal cation quantity of the char. N2 sorption, Inductively Coupled Plasma-AtomicEmission Spectrometer (ICP-AES), and Fourier transform infrared spectroscopy wereused 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 exchangebetween copper ions and alkali/alkaline metal cations was the most important mechanismof copper removal by RDF char, followed by adsorption on functional groupsexisting on the char surface. The copper adsorption behavior was represented well by apseudo-second-order kinetics model and the Langmuir isotherm. The maximum copperremoval capacity was determined to be 38.17 mg/g, which is larger than those of otherlow-cost char adsorbents reported previously.

영어 초록

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. N2 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.

참고 자료

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