[논문]Cadmium Uptake by Mon-viable Biomass from a Marine Brown Alga Ecklonia radiata Turn.

Park, Eun-Kee; Lee, Sung-Eun

doi:10.1007/bf02932974

Cadmium Uptake by Mon-viable Biomass from a Marine Brown Alga Ecklonia radiata Turn. 원문보기

Biotechnology and bioprocess engineering : Bbe, v.7 no.4, 2002년, pp.221 - 224

Park, Eun-Kee (Department of Epidemiology and Preventive Medicine, School of Medicine, University) , Lee, Sung-Eun (Department of Agricultural Chemistry, Kyungpook National University)

Abstract ▼ AI-Helper

Biomass of non-viable and dried brown marine algae Ecklonia radiata Turn. was used to examine Its cadmium uptake capability. Twelve different pretreatments on the algal biomass were prepared. Among these pretreatments, the algal biomass, which treated with 0.1 M NaOH and kept in water. bath (100$\^{C}$, 18 h) followed by washing with distilled water and squeezing, showed the highest amount of cadmium uptake as 1634 $\pm$ 195 mg/g dry biomass at pH 4.0 and 50$\^{C}$. Adsorption temperatures and pH levels played some Important role In cadmium uptake. However, cadmium uptake decreased dramatically at a lower pH than 4.0. Freundlich adsorption isotherm showed potent cadmium uptake capacity of the non-viable biomass. Pretreatments on the non-viable algal biomass shown in this study nay enhance the Eadmium removal in the industrial wastewater.

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문제 정의

The goal of this study is to assess whether several physical and chemical treatments on non-living algal biomass enhance the capacity of divalent metal ion when compared to non-treated algal biomass or do not make a difference between them. In here; we report the rate of cadmium uptake by non-living biomass of E.

제안 방법

The experiments on cadmium uptake by the nonviable biomass of E. radiata were conducted on five different pH conditions (pH 1.5, 2.0, 4.0, 6.07 6.15) or three different temperatures (6℃; room temperature, and 50℃). Cadmium uptake by the algal biomass was effectively accomplished at 50℃ and the three different pHs 4; 6 and 6.

이론/모형

dry weight. The biosorptive metal uptake was evaluated and expressed by use of Freundlich adsorption model [18]. The general form of this model is
radiata exhibited high uptake capacities for lead, cadmium and copper with over 90% of the uptake capacities of the initial concentration. The equilibrium data for the metal ions fitted well to the Freundlich adsorption isotherm and Langmuir isotherm model [22]. In the pretreated biomass of E.

후속연구

radiata pretreated with method E can be used in the industrial wastewater cleaning-up containing cadmium as potent biosorbents. Further studies may be on the application of the alkali pretreatments with the other algal species rather than cyanobacteria which has been not affected by alkali pretreatments on cobalt uptake [20].

참고문헌 (22)

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