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Nowadays, the world and the countries faced the main global problem related to production of huge quantities of wastes. Scientists are looking for methods, which can reduce the amount of wastes on landfills. The domestic waste and oil shale consist approximately of more than 45% and 22 % of organic fraction respectively. Used tires are very trouble some elements of municipal waste, but they are a...
Biosorption can be used as a cost effective and efficient technique for the removal of toxic heavy metal from wastewater. Waste material from industries such as food processing and agriculture may act as potential biosorbent. This paper highlighted the potential used of local fruit waste as biosorbent for heavy metal removal in wastewater. According to Malaysian regulation, the discharge of the effluents...
The biosorption of reactive red on acid-treated Penicilium sp. was investigated in a packed-bed column. The column experiments were conducted to study the effect of operating parameters such as initial dye concentration, adsorbent dose and flow rate on the column removal capacity. The Thomas model was used to analyze the experimental data. Column experiments showed that the fungal mycelia mixed with...
This paper reports the high biosorptive properties of an indigenous plant for Cr(VI) biosorption. The biomass uptake capacity is found 85 mg Cr(VI)/gm of biomass in batch mode. The influence of different experimental parameters such as pH, dose of adsorbent and Cr(VI) levels (15-200 mg/l), effect of contact time etc. on biosorption was evaluated. The adsorption data fitted well to Langmuir and Freundlich...
In the present study we reported the feasibility of Pseudomonas alcaligenes biomass as an alternative biosorbent to remove Pb(II) metallic ions from environmental and industrial wastewater. The ability of Pseudomonas alcaligenes to remove the metallic ions was investigated by using batch biosorption procedure. The effects such as, pH, biosorbent dosage, sorbate concentrations and sorbate-sorbent contact...
Batch experiments were carried out to determine the capacity of Pseudomonas fluorescens biomass to adsorb Sr(II) ions from aqueous solution with respect to pH, initial Sr(II) concentration, contact time and biomass dose. The FTIR results of Pseudomonas fluorescens biomass showed that biomass has different functional groups and these functional groups are able to react with metal ion in aqueous solution...
The present study was undertaken to evaluate the feasibility of Pseudomonas alcaligenes biomass for the removal of strontium ions from aqueous solutions. Batch experiments were performed to study the adsorption of strontium on pH, Pseudomonas alcaligenes biomass adsorbent with respect to initial Sr(II) concentration, contact time and biomass dose. The experimental data were modeled by Langmuir and...
Different kinds of biomass chars of the wheat straws, rice straw, cotton straw collected at Nanjing, China, were pyrolysed in a fixed bed reactor at different temperatures and heating rates. The specific area and pore structure, micromorphology of different biomass chars were measured by a nitrogen adsorption-desorption analysis instrument and scanning electron microscopy (SEM), respectively. The...
The metal uptake capacity of a bacterial strain (namely W-6) isolated from both activated sludge and heavy metals contaminated soil adjacent to an electroplating plant was investigated. Being acclimated by high metal concentration solution, the biosorption rate and zinc tolerance of W-6 were significantly improved. The optimal parameters for W-6 were pH at 6.0, temperature at 40°C, 8 hours' sorption...
Immobilized microorganism technology is an effective method of removing water pollutant in source waters. The effect of biologically immobilized ceramic particles is better in removing the pollutant than simple filter or engineering bacteria liquid, due to the two factors including the adsorption and entrapment function of the filter materials in the biofilter and the biodegradation of the microorganisms...
The pretreated brown algae Laminaria japonica was used to adsorb and desorb Au2+, Ag+, Cu2+ and Ni2+ ions from electroplating wastewater in this article. The results indicated that the biosorption process of Au2+, Ag+, Cu2+ and Ni2+ ions could be divided into two steps. The first step was physical adsorption and reached equilibrium quickly, in less than 15 min. This adsorption process followed the...
The biosorption of strontium ions on beer yeast was investigated under the different adsorption conditions. The results of this study showed that the beer yeast has some abilities to adsorb Sr(II) from solution. Different variables, such as solution pH, contact time, adsorbent dose and initial strontium ions concentration influenced the adsorptive quantity. The process of biosorption has nearly reached...
In the present study we reported the feasibility of Pseudomonas fluorescens PFC02 biomass as an alternative biosorbent to remove Co(II) and Cd(II) metallic ions from environmental and industrial wastewater.The ability of PFC02 to remove the metallic ions was investigated by using batch biosorption procedure. The effects such as, pH, biosorbent dosage, sorbate concentrations and sorbate-sorbent contact...
The fungal mycelial pellets of Aspergillus fumigatus was used for the removal of humic acid from aqueous solution. The impact of culture age, mycelial pellets preservation time, and different nutrition-cultured mycelial pellets on the biosorption of humic acid was studied. The results showed that humic acid could be adsorbed by Aspergillus fumigatus mycelial pellets. Sucrose could be a good cultivate...
This paper has researched on the adsorption of Ni in water using Laminaria japonica and Undaria pinnatifida. The dependence on pH and nickel concentration of the adsorption was studied. Batch experiments results showed that the adsorptive capacity of Laminaria japonica and Undaria pinnatifida was 2.933mg/g and 0.985 mg/g of adsorbent. The Langmuir model was used to describe the adsorption equilibrium...
Pore structure properties of chars obtained by fast pyrolysis of different biomass species under different temperatures are extensively investigated. The carbon content and the calorific value of all pyrolysis chars produced are high. Pore adsorption characteristics of the chars are assigned to be a type III adsorption isotherm curve. Almost all pore diameters are larger than 2 nm, which are allocated...
The Pb(II) biosorption characteristics of Pseudomonas fluorescens PFC02 biomass was examined as a function of initial pH, contact time and initial metal ion concentration. FTIR spectra showed that the principal functional sites taking part in the sorption process included carboxyl , hydroxyl groups and -CH3 stretching groups, the mechanism analysis showed that the chemical chelating was the main adsorption...
In this study, the influence of pyrolysis temperature (T) in the range of 200-900??C on the characteristics of porosity in biomass chars was investigated. The samples were characterized by N2 isothermal adsorption/desorption method and scanning electron microscopy (SEM). The results indicated that pyrolysis temperature had a notable impact on the pore structure and morphology of biomass char. Between...
The biosorption of Pb(II) ions on dried wasted beer yeast was investigated with respect to the adsorption conditions. The results of this study indicated that different variables, such as contact time, adsorbent dose, solution pH and initial heavy metal ions concentration influenced the adsorptive quantity. The best adsorption parameters and quantitative analysis of Pb2+ by dried waste beer yeast...
The adsorption processes at different inflow of chemical oxygen demand (COD) were investigated, using an adsorption-biodegradation anaerobic sequencing batch reactor (AB-ASBR) operated at mesophilic temperature. Results indicated that COD removal by adsorption could reach to maximum value no longer than 20 min, and the kind of substrates, the agitating condition, the sludge amount together with the...
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