Bacillus sp. is a gram-positive spore-forming bacterium that mainly resides in soil and plant rhizosphere. Its antimicrobial activity, proteases and plasmids are used in biological control, various industrial production and gene transfer system respectively. A broad-spectrum adsorbent of Bacillus sp. is successfully applied for removal of metal such as Cu(II), Pb(II) and Zn(II) from aqueous effluents by Visa Tech Ltd.