Biosorption of Cu from ferruginous wastewater by algal biomass

Kratochvil, David; Volesky, B.

doi:10.1016/s0043-1354(98)00015-3

Cited by 122 publications

(56 citation statements)

References 24 publications

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“…About 85% of total (ultimate) copper sorption on CICS and NICS rapidly occurs within 2 h, followed by a relatively slow process. The sorption equilibrium can be achieved within about 6 h. Comparison of this finding with those reported in literature shows that the immobilization does not obviously alter the biosorption kinetics (Kratochvil and Volesky, 1998;Chen and Yang, 2005). As the specific surface area of sorbents is relatively low, it can be assumed that the surface diffusion controls the : the imprinting Cu 2þ concentration in the preparation (mg/g sorbent).…”

Section: 2supporting

confidence: 71%

Improvement of metal adsorption onto chitosan/Sargassum sp. composite sorbent by an innovative ion-imprint technology

et al. 2011

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Ion-imprinted chitosan Sargassum sp. a b s t r a c tTechnology for immobilization of biomass has attracted a great interest due to the high sorption capacity of biomass for sequestration of toxic metals from industrial effluents.However, the currently practiced immobilization methods normally reduce the metal sorption capacities. In this study, an innovative ion-imprint technology was developed to overcome the drawback. Copper ion was first imprinted onto the functional groups of chitosan that formed a pellet-typed sorbent through the granulation with Sargassum sp.; the imprinted copper ion was chemically detached from the sorbent, leading to the formation of a novel copper ion-imprinted chitosan/Sargassum sp. (CICS) composite adsorbent. The copper sorption on CICS was found to be highly pH-dependent and the maximum uptake capacity was achieved at pH 4.7e5.5. The adsorption isotherm study showed the maximum sorption capacity of CICS of 1.08 mmol/g, much higher than the non-imprinted chitosan/Sargassum sp. sorbent (NICS) (0.49 mmol/g). The used sorbent was reusable after being regenerated through desorption. The FTIR and XPS studies revealed that the greater sorption of heavy metal was attributed to the large number of primary amine groups available on the surfaces of the ion-imprinted chitosan and the abundant carboxyl groups on Sargassum sp.. Finally, an intraparticle surface diffusion controlled model well described the sorption history of the sorbents. ª 2010 Elsevier Ltd. All rights reserved. IntroductionBiosorption has been considered as a promising technology for the removal of low-level toxic metals from industrial effluents and natural waters (Volesky, 2007;Mehta and Gaur, 2005;Wang and Chen, 2009). Marine algae have received greater attention because of their high metal biosorption capacity, low cost, and renewable nature. They can effectively remove heavy metal ions with concentrations ranging from few ppm to several hundreds ppm. The maximum metal biosorption capacity ranging from 0.1 to 1.5 mmol/g biosorbent has been reported (Davis et al., 2003; Yang, 2005, 2006 A v a i l a b l e a t w w w . s c i e n c e d i r e c t . c o m j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / w a t r e s w a t e r r e s e a r c h 4 5 ( 2 0 1 1 ) 1 4 5 e1 5 40043-1354/$ e see front matter ª

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Section: 2supporting

confidence: 71%

Improvement of metal adsorption onto chitosan/Sargassum sp. composite sorbent by an innovative ion-imprint technology

et al. 2011

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“…The major advantages of biosorption over conventional treatment methods include: Low cost; High efficiency; minimization of chemical and or biological sludge; no additional nutrients requirement; regeneration of biosorbent and possibility of metal recovery. The biosorption process involves a solid phase (sorbent or biosorbent; biological material) and a liquid phase (solvent, normally water) containing dissolved species to be sorbed (sorbate, metal ions) due to higher affinity of biosorbent for the sorbate species, the later is attracted and bound there by different mechanisms 6 .…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Removal of Lead from Synthetic Solutions by Protonated Teleosts Biomass

Ashraf

Maah

Yusoff

2011

Journal of Chemistry

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Abstract:Lead is considered as a general protoplasmic poison which is cumulative and slow acting. It is used in different industrial processes. Its contamination in water may cause serious environmental problems. So removal of lead from environment is very necessary. For its removal the most suitable and cheapest process is biosorption. It is a process of passive metal binding by biomass. The biosorbent used in this study is teleosts biomass (fish scales) collected from local market. The purpose of this study is to search the effect of acid treatment on biosorbent and to optimize conditions for the uptake capacity of biosorbent. The optimal conditions for the Pb 2+ biosorption capacity of teleosts biomass (fish scales as waste of white meat) was investigated. For this purposes, the biomass was subjected to chemical treatments with mono, di and tri-protic acids such as hydrochloric acid, sulphuric acid and phosphoric acid. Among the treatment methods used, the highest Pb 2+ uptake was obtained with hydrochloric acid treatment of biomass. The effect of pH, biomass granular size, biomass concentration and initial Pb 2+ ion concentration was studied. The highest Pb 2+ removal (65.39%) was obtained at pH 4.0 for 50 mg L -1 initial lead ion concentration with biomass granular size 80 micron and concentration of 0.05 g. The uptake was 75.70 mg g -1 . The equilibrium data were analyzed using the Langmuir and Freundlich adsorption isotherm. The characteristic parameters for each isotherm were determined. Both the isotherms provided the best correlation for Pb 2+ on to the biomass. These results showed that teleosts biomass (fish scales) is a potential biomass to remove Pb +2 ions from synthetic solutions so also with lead contaminated water. These values can be compared with those observed for other biosorbents and it is considerably higher than the value obtained with the majority of the biosorbent.

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“…The advantages of biosorbents are: low cost, high efficiency of heavy metal removal from dilute solutions, regeneration and possible metal recovery [16]. It has been reported that the algal biomass of the Sargassum family [25]. Consequently, brown marine macro-algae were used to remove Cd (II) [26].…”

Section: Literature Reviewmentioning

confidence: 99%

Performance of Egg-Shell and Fish-Scale as Adsorbent Materials for Chromium (VI) Removal from Effluents of Tannery Industries in Eastern Uganda

Bamukyaye¹,

Wanasolo²

2017

OALib

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The performance of egg-shells and fish-scales biomaterials in separating chromium (VI) ions from tannery effluents obtained from tannery industries in Jinja town of Eastern Uganda was investigated. Using crushed egg-shell and fish-scales as adsorbents, sorption tests were carried out to determine the effects of bio-sorbent concentration and particle size on chromium (VI) removal. The adsorbate concentration in the tannery effluents before and after adsorption was analyzed using the UV-vis Spectrophotometer at wavelength of 540 nm. The adsorbent concentration was calculated from concentration change in aqueous solution before and after equilibrium sorption. Results showed that chromium (VI) ions adsorb on the surfaces of both biomaterials. The optimum conditions for chromium (VI) removal were found at pH of 6.8, particle size of 300 µm and bio-sorbent concentration of 0.5 g. The correlation coefficient (R 2 ) showed that chromium (VI) adsorption fitted Langmuir adsorption isotherms. It was concluded that the adsorption process of chromium (VI) on the fish-scales and egg-shells was highly feasible.

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Biosorption of Cu from ferruginous wastewater by algal biomass

Cited by 122 publications

References 24 publications

Improvement of metal adsorption onto chitosan/Sargassum sp. composite sorbent by an innovative ion-imprint technology

Improvement of metal adsorption onto chitosan/Sargassum sp. composite sorbent by an innovative ion-imprint technology

[Retracted] Removal of Lead from Synthetic Solutions by Protonated Teleosts Biomass

Performance of Egg-Shell and Fish-Scale as Adsorbent Materials for Chromium (VI) Removal from Effluents of Tannery Industries in Eastern Uganda

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