OBJECTIVE Assessment of the bacterium L. sphaericus as a dual-action candidate for biological control of mosquito-borne diseases and bioremediation of toxic metals. METHODS Larvae of the mosquito, C. quinquefasciatus, were first evaluated for metal tolerance and then exposed to 5 ppm cadmium, chromium, arsenic, and lead in assays together with seven strains of L. sphaericus. A probit regressi...

Biosorption is a process, which represents a biotechnological innovation as well as a cost effective excellent tool for removing heavy metals from aqueous solutions. The kinetics and equilibrium of the biosorption of Chromium (VI) from aqueous solution were investigated using immobilized mixed biosorbents of Annona squamosa seeds and Aspergillus niger in a batch system. The biosorption characte...

This study reports the sequestration of Cd(II) and Hg(II) using a new biosorbent, Nauclea diderrichii seed biomass. Experimental data obtained were fitted into kinetic and thermodynamic models. Experimental data fitted best into pseudo-second order kinetic model among others. Results obtained kinetically revealed that the biosorption of Cd(II) and Hg(II) using N. diderrichii seed biosorbent inc...

Biosorption has attracted attention as a cost-effective means for the treatment of metal-bearing wastewater. While using novel biosorbents, optimization of operating conditions becomes more important for the efficiency of the process. In this study, a novel biosorbent i.e banana peel were used for biosorption of Sn2+ from aqueous media. The effect of various parameters, such as, contacts time o...

The toxic heavy metals cause soil and water pollution. include cadmium, lead, zinc, arsenic, chromium, nickel, mercury, etc. There are physico-chemical methods for the removal of from contaminated soils water. biosorption technique is easy, eco-friendly economical bodies. work here describes study Langmuir kinetics by Aspergillus clavatus, oryzae fumigatus. fungi were isolated distillery spentw...

In this study, the raw seashells of Mactra aequisulcata, class Bivalvia and phylum Mollusca were employed as an adsorbent to remove copper (II) cadmium metal ions from aqueous solution. The characterization shells was performed using FTIR, EDX SEM, BET isotherm point zero charge (pHpzc). Batch experiments assess various factors on biosorption efficiency. Maximum adsorption both metals convenien...

Enterococcus faecium, a lactic acid bacterium (LAB), was evaluated for its ability to remove copper(II) ions from water. The effects of the pH, contact time, initial concentration of copper(II) ions, and temperature on the biosorption rate and capacity were studied. The initial concentrations of copper(II) ions used to determine the maximum amount of biosorbed copper(II) ions onto lyophilised l...

In recent years, biosorption process has become an economic and eco-friendly alternative treatment technology in the water and wastewater industry. In this light, a number of biosorbents were developed and are successfully employed for treating various pollutants including metals, dyes, phenols, fluoride, and pharmaceuticals in solutions (aqueous/oil). However, still there are few technical bar...

The biomass of filamentous fungi is an important cost-effective biomass for heavy metal biosorption. However, use of free fungal cells can cause difficulties in the separation of biomass from the effluent. In this study, we immobilized the living conidia of the heavy metal-resistant Penicillium janthinillum strain GXCR by polyvinyl alcohol (PVA)-sodium alginate (SA) beads to remove heavy metals...

Abstract Heavy metals cause outrageous ecological risks when released into the environment from many point and non-point sources. Biosorbents prepared leaves of Eupatorium adenophorum ( AEA ) Acer oblongum AAO were used as practical solutions to remove toxic heavy metal cadmium (Cd 2+ wastewater. Biosorption Cd was investigated using biomass under batch conditions. The effect operating variable...