Copper (Cu 2+) Removal By Bio Flocculants Produced From Bacillus subtillis BSIA
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Date
2016-09
Authors
Mohammed Azmi, Megat Azlan
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Abstract
Copper (Cu 2+) are commonly metal that been widely spread in the earth due to its availability as an essential element for plants and animal and can be found in rock, water, and soil naturally. Due to their conductivity, and ductile properties copper (Cu 2+) was used in various industries such as electrical and electronic, semiconductor and electro plating industries. Since copper (Cu 2+) defined as an element which cannot be destroyed, their faith in environment was taken into considerations. The used of bio flocculants as an alternative ways to remove heavy metals was fall into a limelight because of their safeness to health and environment and ability to remove copper (Cu 2+) at lower concentrations. This research was focused on the ability of bio flocculants produced from Bacillus subtillis BSIA strains to remove lower concentrations of copper (Cu 2+). Important factor such as pH, concentrations of inorganic salt, bio flocculants dosage and initial concentrations of copper were also being studied since copper removal was very dependable on stated variables. At the end of the research, the selected bio flocculants was used to treated lower concentrations of copper (Cu 2+) and their removal efficiency was compared with Polyaluminium chloride (PAC). Best pH operated for cultural broth to remove lower copper concentration was recorded at pH 4with 2ml dosage of broth culture and 4ml dosage of CaCl2. However, the used of crude bio flocculants to remove lower concentrations of copper (Cu 2+) seems to be more interesting since their best operated pH at 4 with 3 g dosage of crude bio flocculants and
4 ml dosage of CaCl2.Pure bio flocculants best operated at pH 6 with 1 g dosage of pure bio flocculants and 2ml dosage of inorganic salt CaCl2. Result obtained from this study provide an information regarding factor that affecting copper removal process using bio flocculants extracted from Bacillus subtillis BSIA. Factor such as pH, concentrations of inorganic salt, dosage of bio flocculants and initial concentrations of copper (Cu 2+) ion would give a significant effect toward removal efficiency. Bio flocculants extracted from Bacillus subtillis BSIA may find possible applications as an alternative ways to remove lower concentrations of copper (Cu 2+) since it is safe to human and environment.
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The ability of bio flocculants produced from Bacillus subtillis BSIA strains , to remove lower concentrations of copper (Cu 2+).