Biosorption of Ni (II) from Aqueous Solutions by Marine Algae Cladophora glomerata (L.) Kutz. (Chlorophyta)

Biosorption of Pb (II) from aqueous solutions by modified of two kinds of marine algae, Sargassum glaucescens and Gracilaria corticata In this research, the batch removal of Pb2+ ions from wastewater and aqueous solution with the use o two different modified algae Gracilaria corticata (red algae) and Sargassum glaucescens (brown algae) was examined. The experiment was performed in a batch system and the effect of the pH solution; initial concentration and contact time on biosorption by both biomasses were investigated and compared. When we used S. glaucescens as a biosorbent, the optima conditions of pH, Pb2+ concentration and equilibrium time were at 5, 200 mg/L and 70 min, in the range of 95.6% removal. When G. corticata was used for this process, pH 3, 15 mg/L pb2+ concentration and 50 min contact time, resulted in the maximum removal (86.4%). The equilibrium adsorption data are fitted to the Frundlich and Langmuir isotherm model, by S. glaucescens and G. corticata, respectively. The pb2+ uptake by both biosorbent was best described by the second-order rate model.

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Removal and bioaccumulation of heavy metals from aqueous solutions using freshwater algae

Water Science & Technology ◽

10.2166/wst.2014.458 ◽

2014 ◽

Vol 71 (1) ◽

pp. 38-44 ◽

Cited By ~ 6

Author(s):

Isha Shamshad ◽

Sardar Khan ◽

Muhammad Waqas ◽

Nadeem Ahmad ◽

Khushnood -Ur-Rehman ◽

...

Keyword(s):

Heavy Metals ◽

Aqueous Solutions ◽

Removal Efficiency ◽

Controlled Environment ◽

Cladophora Glomerata ◽

Freshwater Algae ◽

Average Temperature ◽

Low Levels

Four freshwater algae, including Cladophora glomerata, Oedogonium westii, Vaucheria debaryana and Zygnema insigne, were tested for their bioaccumulation capacity for cadmium (Cd), chromium (Cr) and lead (Pb) in a controlled environment with an average temperature of 18 °C, and light/dark duration of 12:12 h. Experiments were performed in aqueous solutions containing selected heavy metals (HM) (ranging from 0.05 to 1.5 mg L−1) with 0.5 g of living algae at 18 °C and pH 6.8. The results indicated that C. glomerata was observed to be the most competent species for the removal of Cr, Cd and Pb from aqueous solutions. HM removal trends were in the order of Cd>Cr>Pb while the removal efficiency of selected algae species was in the order of C. glomerata, O. westii, V. debaryana and Z. insigne. The bioaccumulation capacity of C. glomerata, V. debaryana and Z. insigne was observed for different HM. Removal of HM was higher with low levels of HM in aqueous solutions. The results indicated that C. glomerata, O. westii, V. debaryana and Z. insigne had significant (P ≤0.01) diverse bioaccumulation capacity for Cr, Cd and Pb.

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Photodegradation of Two Antibiotics Involved with Fe (III) and Marine Algae

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.260-261.1047 ◽

2012 ◽

Vol 260-261 ◽

pp. 1047-1051

Author(s):

Li Yun Ge ◽

Yong Gang Huang ◽

De Xiang Gao ◽

Huan Huan Deng

Keyword(s):

High Pressure ◽

Aqueous Solutions ◽

Marine Algae ◽

Degradation Efficiency ◽

Photochemical Degradation ◽

Mercury Lamp ◽

Platymonas Subcordiformis ◽

Ciprofloxacin Hydrochloride ◽

Initial Concentration ◽

Photodegradation Rate

The photochemical degradation of two antibiotics, enrofloxacin and ciprofloxacin hydrochloride, was preliminarily studied under irradiation with a high-pressure mercury lamp (HMPL) in this paper. The influence of initial concentration of antibiotics, Fe (Ⅲ) and platymonas subcordiformis on the degradation efficiency of antibiotics were investigated. The results suggested that in the presence of P. subcordiformis, the degradation efficiency of enrofloxacin and ciprofloxacin hydrochloride were 85.0% and 84.2% in aqueous solutions underwent photodegradation under HMPL irradiation, respectively. Moreover, the lower initial concentration of antibiotics improved photodegradation rate of antibiotics.

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