2 edition of Algal biomass as adsorbents for heavy metal sorption from aqueous solutions found in the catalog.
Algal biomass as adsorbents for heavy metal sorption from aqueous solutions
Danish Javed Malik
Written in English
Thesis (Ph.D) - Loughborough University, 1999.
|Statement||by Danish J. Mailk.|
G.Z. Kyzas, Commercial coffee wastes as materials for adsorption of heavy metals from aqueous solutions, Materials, 5 () – G. Blázquez, F. Hernainz, M. Calero, L. Ruiz-Nunez, Removal of cadmium ions with olive stones: the effect of some parameters, Process Chem., 40 () – Agricultural solid wastes either in natural or in modified forms have been successfully used for decades as non-conventional cost-effective adsorbents for removing metal ions and dyes from their aqueous phase and have been recognized as a sustainable solution for wastewater treatment. Therefore, this review article provides extensive literature information about heavy metals and dyes, .
Wilke et al. Biosorption of heavy metals by algae 49 Sorption experiments Metal solutions were prepared by dissolving Pb(NO 3) 2 stock solu-tion in doubly deionised water. The initial pH of the lead solution was adjusted to pH 5 by using either M HCl or M NaOH in order to prevent precipitation. Sorption equilibrium experiments. The Langmuir isotherm could more appropriately describe metal sorption by the test algae than the Freundlich isotherm. A 1 g l −1 biomass concentration of Pithophora odeogonia and Spirogyra neglecta, respectively removed 97 and 89% Pb 2+ in 30 min from a solution containing 5 mg l −1 initial concentration of Pb 2+.
This study reports the competitive adsorption of Ni(II), Cd(II) and Cr(VI) onto sunflower waste biomass carbons, viz. sunflower head carbon and sunflower stem carbon from multi-metal aqueous solution. The adsorption capacity of the adsorbents was highest in mono-metal system but decreased with increase in the number of co-ions. The adsorption capacity in mono-metal system was and mM. Abstract. The publication is a synthetic collection of information on the sorption properties of marine and freshwater algae. Kinetics and sorption equilibrium of heavy metals in algae-solution system, influence of abiotic factors on the process of sorption and desorption of analytes from biomass are discussed.
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Algae biomass adsorbents, which utilized for adsorptive removal of heavy metal pollutants from wastewater, show a promising alternative. Different empirical isotherm models for single analyte have been discussed (i.e., Freundlich, Langmuir, Temkin, Sips, and Redlich-Peterson).Author: Mazen K.
Nazal. Heavy metal removal from aqueous solutions using engineered magnetic biochars derived from waste marine macro-algal biomass Not only biochars but also many adsorbents such as activated carbon (Ai et al., ) Parameters for the heavy metal sorption isotherms fitted with Langmuir and Freundlich equations for KBC mag − and HBC mag Cited by: Among these mechanisms, ion exchange is the most important mechanism in the biosorption of heavy metal ions by algal biomass (Michalak and Chojnacka,Mehta et al., a).
In this review article, we have focused on heavy metal ion bioremediation using algal biomass to treat wastewaters, and have critically assessed the potential venues of Cited by: Biosorption is the effective method for the removal of heavy metal ions from wastewaters. Results are presented showing the sorption of Pb(II) from solutions by biomass of commonly available, filamentous green algae Spirogyra sp.
Batch experiments were conducted to determine the biosorption properties of the biomass and it was observed that the maximum adsorption capacity of Pb(II) ion was Cited by: sorption for four heavy metal ions (Cd2, Cu2, Pb2 and Zn2) and two algal species suggested that the mutual effects between pH and heavy metal ion sorption can be explained in terms of ion exchange and coulombic attraction between the heavy metal ions and the algal biomass.
A ‘ positive feedback’ was. The biosorption of heavy metals from aqueous solutions was investigated, using a cheap and abundant dry biomass of red algae P.
palmata. The Freundlich. The sorption of heavy metals (lead, copper, and cadmium) by a marine algal biomass Sargassum sp. was studied in single and multiple metal-ion systems. Kinetic experiments in the single-metal system revealed very rapid removal rates of metal ions, with ∼90% of the total adsorption occurring within 10−60 min.
Biosorption performance for each single metal ion showed an increase in. Other researchers (Alinnor, ) have further shown that adsorption of heavy metal ions from aqueous solutions with FA is related to the content of SiO 2, Al 2 O 3 and Fe 2 O 3 in FA.
On the. More studies had been reported on the performance of green and red algae for the biosorption of heavy metals in recent years. The heavy metals in the studies include: lead, copper, cadmium, zinc, and chromium. As shown in Table 2, both algae can remove heavy metal ions from aqueous solutions.
However, the performance of both is far below that. Sorption capacity of six different algae (green, red and brown) was evaluated in the recovery of cadmium, nickel, zinc, copper and lead from aqueous solutions. The optimum sorption conditions were studied for each monometallic system.
The optimum pH was 6 for the recovery of Cd, Ni and Zn, and less than 5 for Cu and Pb. Authors: Azam Tabatabaee, Fereshteh Dastgoshadeh, Akram Tabatabaee Abstract: This paper describes the use of by-products as adsorbents for removing heavy metals from aqueous effluent solutions.
Products of almond skin, walnut shell, saw dust, rice bran and egg shell were evaluated as metal ion adsorbents in aqueous solutions.
All adsorbents have the same priority for heavy metals, such as Cr(III), Cu(II) and Pb(II) metal ions, and the adsorption of Cd(II) was much lower than that of the other metals, probably due to. The experimental factors that influence the biosorption capacity of marine algae biomass, as initial solution pH, biosorbent dosage, initial heavy metal concentration, contact time and temperature, are discussed in order to highlight the importance of well-defined experimental conditions for the use of these types of biosorbents.
BIOSORPTION OF HEAVY METALS USING ALGAE: A REVIEW S Kanchana 1*, J Jeyanthi 2, R Kathiravan 3 and K Suganya 4 Review Article Various algal species can be used for removing heavy metals like Cd, Cu, Ni, Pb, and Zn from aqueous solutions successfully.
Biological removal of metals is possible by both living and non living algal biomass. Algal biomass as adsorbents for heavy metal sorption from aqueous solutions.
The biosorbents showed significant metal\ud sorption capacity for copper, cadmium, nickel and zinc from synthetic single metal\ud and multi-metal bearing aqueous solutions. The equilibrium biosorption process may\ud be described using a surface complex formation.
Carbon-based adsorbents such as graphene and its derivatives, carbon nanotubes, activated carbon, and biochar are often used to remove heavy metals from aqueous solutions. Fresh water accounts for 3% of water resources on the Earth.
Human and industrial activities produce and discharge wastes containing heavy metals into the water resources making them unavailable and threatening human health and the ecosystem. Conventional methods for the removal of metal ions such as chemical precipitation and membrane filtration are extremely expensive when.
Biomass of nonliving, dried brown marine algae Sargassum natans, Fucus vesiculosus, and Ascophyllum nodosum demonstrated high equilibrium uptake of cadmium from aqueous solutions. The metal uptake of cadmium from aqueous solutions. The metal uptake by these materials was quantitatively evaluated using sorption isotherms.
The removal of heavy metal ions by the nonliving biomass of aquatic macrophytes was investigated. The work involved studies of physical and biochemical properties of the materials, batch sorption experiments carried out in agitation flasks, and continuous runs in a packed bed column at laboratory scale.
Results showed that the dried biomass of Potamogeton lucens, Salvinia herzogii, and. The study was performed using algal biomass at the initial concentration was μg/L, biomass dose of 1 g and contact time of min. Hydrogen ion concentration plays important task in affecting the adsorption of heavy metals over adsorbant because it itself compete to the metal ions while adsorption.
and green algae , therefore, the metal uptake capacities exhibited by non-living biomass of micro-algal (green algae) and macro-algal species (brown algae) varies from to mmol/g and.most promising types of biosorbents studied is the algal biomass.
The abundance of algae can hardly be overestimated. Biosorption in algae has mainly been attributed to the cell wall, composed of the fibrilar skeleton (Figueira et al., ). Conventional methods for removing metals from aqueous solutions before they are disposed of include.Algae Biomass Organization (ABO) is a non-profit organization promoting the development of viable commercial markets for renewable and sustainable commodities derived from algae.