Biosorption of Nickel from Synthetic and Electroplating Industrial Solutions using a Green Marine Algae Ulva reticulata

Abstract

The present work investigated the biosorption of nickel from synthetic and electroplating industrial effluents using a green marine algae Ulva reticulata. Preliminary batch results imply that pH 4.5 was optimum for nickel uptake and the isotherm experiments conducted at this pH condition indicated that U. reticulata can biosorb 62.3 mg g -1 nickel ions from synthetic solutions, according to the Langmuir model. Desorption was effective and practical using 0.1 M CaCl 2 (pH 2.5, HCl) and the biomass was regenerated and reused for three cycles. Continuous biosorption experiments were performed in an upflow packed column (2 cm I.D and 35 cm height). Among the two electroplating effluents used, effluent-1 is characterized by excess co-ions and high nickel ion content. This influenced the column nickel uptake with U. reticulata exhibiting 52.1 mg g -1 in the case of effluent-1 compared to 56.5 mg g -1 in the case of synthetic solution. On the other hand U. reticulata performed well in effluent-2 with uptakes of 53.3 and 54.3 mg g -1 for effluent-2 and synthetic solution, respectively. Mathematical modeling of column experimental data was performed using nonlinear forms of the Thomas-and modified dose-response models, with the latter able to simulate breakthrough curves with high correlation coefficients.

Adsorption Behavior of Solvent‐Free Microwave Assisted Nanosilica‐Functionalized Carboxylic Acids for the Removal of Cobalt (II) from Water

“…The adsorption process has proven as the best water treatment technology because of high efficiency, rapid phase separation, and low consumption of organic solvents. Many substances have been applied as solid-phase extractors including activated carbon, silica gel, ion-exchange resins, polymers, and other adsorbents [8][9][10][11][12][13].…”

Removal of heavy metals using a brewer's yeast strain of Saccharomyces cerevisiae: application to the treatment of real electroplating effluents containing multielements

“…In recent years, different types of biomass (such as Sargassum wightii, Aspergillus niger, Aspergillus sydoni, Penicillium janthinellum, Ulva reticulata, Geobacillus thermodenitrificans ) have been used for the treatment of wastewaters containing heavy metals 23–27. However, the treatment of real effluents using S. cerevisiae has rarely been reported in the literature 28.…”