Sheth, K N Comparative study of removal of Cr(VI) with PAC, GAC and adsorbent prepared from tobacco roots. [electronic resource] - Journal of environmental science & engineering Jul 2005 - 218-21 p. digital Publication Type: Comparative Study; Journal Article Subjects--Topical Terms: AdsorptionCarbonChromium--isolation & purificationPlant RootsNicotianaWater Purification