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The characters of activated carbon adsorption of heavy
metals (Cu2+,Cd2+) in a multicomponent system were studies
is this experiment. The adsorption was affected by
addition different conccentration, reactivity organics in
pH=2. 5. The findings in this experiment can be used for
extimate the better operation condititons in order to
increasing the efficacy of water and wastewater treatment.
This paper contains the isotherms experiment and rate
kinetics experiment. In regard to isotherms
adsorption experiment, the results comply with
Freundlich adsorption theory. The multicomponent
system, metals: 200~500 mg/L, organics: 0~2000 mg/L, the 1/n
and K which addition phenol are -0.3605~0.3160, 34.04~978.6
respectively; and addition glutamic acid are -0.4094~.02106,
22.4 0~75.86. It is founded that 1/n value are small, and no
apparrent relationship with organics concentration, but K
was increasing with organics concentration except Cu2+/
glutamic acid system. The rate models were estimated
after data analysis. The model is C(t)=A0+A1*exp(-k1t)+A2*
exp(-k2t) which represent paralle realtions (simultaneously)
occur at different period. The rate constants in thhe Kinetic
model. The k1 value range are 3.321~0.01994, which decrease
with orgamics concentration increasing except Cu2+/phenol
system. In addition to metalions and organics
adsorption onto activated carbon. It is founded the rate
of adsorption for organics is more than metalions. Glutamic
acid has very strong chelating ability with metal ions,
the chelating can even happend between glutamic acid
and metal ions which were adsorption on activated
carbon. The K, 1/n, k1, k2, of Cu2+/glutamic acid
system differ from other systems due to the chelating complex
was formed.
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