Anupam, K.; Suman, D.; Chiranjib, B.; Siddhartha, D., (2011). Adsorptive removal of chromium (VI) from aqueous solution over powdered activated carbon: Optimization through response surface methodology. Chem. Eng. J., 173:135-143 (8 pages).
APHA, A.,(2005). Standard methods for the examination of water and wastewater in: (17th Ed.) American public health association., Washington DC.
Aravind, J.; Sudha, G.; Kanmani, P.; Devisri, A.J.; Dhivyalakshmi, S.; Raghavprasad, M., (2015). Equlibrium and kinetic study on chromium (VI) removal from simulated waste water using gooseberry seeds as a novel biosorbent. Global J. Environ. Sci. Manage., l(3): 233-244 (12 pages).
Ariffin, M.A.; Lim, S.H.; Zainura, N.; Zaini, U., (2008).Removal of boron industrial waste water by chemical precipitation using chitosan. J. Chem. Nat. Resour. Eng., 4(1): 1-11 (11 pages).
Arulkumar, M.; Kasinathan, T.; Palanivel, T.; Thayumanavan, P., (2012). Rapid removal of chromium from aqueous solution using novel prawn shell activated carbon. Chem. Eng. J., 185-186: 178-186 (9 pages).
Bajpai, A.K.; Rai, L., (2010). Removal of chromium ions from aqueous solution by biosorption on to ternary biopolymeric microspheres. Int. J. Chem. Technol., 17: 17-27 (11 pages).
Box, G.E.P.; Wilson, K.B., (1960). Some new three level designs for the study of quantitative variables. Technometrics, 2: 455-475 (21 pages).
Cheung, K.H.; Gu J.D., (2007). Mechanisms of hexavalent chromium detoxification by bacteria and bioremediation applications. Int. Biodeter. Biodegr.,59: 8-15 (8 pages).
Das, B.; Mondal, N.K.; Roy, P.; Chattaraj, S., (2013). Equilibrium, Kinetic, and Thermodynamic study on Cr (VI) removal from aqueous solution using Pistiastratiotes biomass. Chem. Sci. Trans., 2 (1): 85-104 (20 pages).
Das, B.; Mondal, N.K.; Roy, P.; Chattoraj, S., (2013). Application of response surface methodology for hexavalent chromium adsorption onto alluvial soil of Indian origin. Int. J. Environ. Pollut. Solut., 2: 72-87 (16 pages).
Das, N.; Vimala, R.; Karthika,P., (2007). Biosorption of heavy metals – an overview. Indian J. Biotechnol., 7: 159-169 (11 pages).
Devi, B.V.; Jahagirdar, A.A.; Ahmed, M.N.Z., (2012). Adsorption of chromium on activated carbon prepared from coconut shell. Int. J. Eng. Res. Appl., 2 (5): 364-370 (7 pages).
Fenglian, Fu.; Qi, Wang., (2011). Removal of heavy metal ions from wastewaters: A review. J. Environ. Manage., 92: 407-418 (12 pages).
Ferreira, S.L.C.; Bruns, R.E.; Ferreira, H.S.; Matos, G.D.; David, J.M.; Brand˜ao, G.C.; da Silva, E.G.P.; Portugal, L.A.; dos Reis, P.S.; Souza, A.S.; dos Santos, W.N.L., (2007). Box-Behnken design: An alternative for the optimization of analytical methods. Anal. Chim. Acta., 597: 179–186 (8 pages).
George, Z.K.; Jie, F.; Kostas, A. M., (2013). The change from past to future for adsorbent materials in treatment of dyeing wastewaters. Mater., 6: 5131-5158 (28 pages).
Goyal, K.R.; Jayakumar, N.S.; Hashim, M.A., (2011). A comparative study of experimental optimization and response surface optimisation of Cr removal by emulsion ionic liquid membrane. J. Hazard. Mater., 196: 383-390 (8 pages).
Hamsaveni, D.R.; Prapulla, S.G.; Divakar, S., (2001).Response surface methodological approach for the synthesis of isobutyl isobutyrate. Process Biochem., 36: 1103-1109 (8 pages).
Kanmani, P.; Karthik, S.; Aravind, J.; Kumaresan, K., (2013). The use of response surface methodology as a statistical tool for media optimization in lipase production from the dairy effluent isolate Fusarium solani. ISRN Biotechnology., article ID 528708:8 (8 pages).
Krishna, D.; Krishna, S.K.; Sree, K.P., (2013). Response surface modeling and optimization of chromium (vi) removal from aqueous solution using borasus flabellifer coir powder. Int. J. Appl. Sci. Eng., 2: 213-226 (14 pages).
Kundu, S.; Gupta, A.K., (2005). Analysis and modelling of fixed bed column operations on As (V) removal by adsorption onto iron-oxide coated cement. J. Colloid Interf. Sci., 290(1): 52-60 (9 pages).
Lee, J.; Ye, L.; Landen, W.O.; Eitenmiller., (2000). Optimization of an extraction procedure for the quantification of vitamin e in tomato and broccoli using response surface methodology. J. Food Comp. Anal., 13: 45-57 (13 pages).
Montgomery, D.C., (1997). Design and analysis of experiments, 4th.Ed. John Wiley & Sons Inc.
Muthukumaran, K.; Beulah, S.S., (2010). SEM and FT-IR studies on nature of adsorption of Mercury (II) and Chromium (VI) from waste water using chemically activated Syzygiumjambolanumnut carbon. Asian J. Chem., 22(10):7857-7864 (8 pages).
Nguyen, T.A.H.; Ngo, H.H.; Guo, W.S.; Zhang, J.; Liang, S.; Yue, Q.Y.; Li, Q.; Nguyen, T.V., (2013). Applicability of agricultural waste and by-products for adsorptive removal of heavy metals from wastewater. Bioresour. Technol., 148: 574-585 (12 pages).
Özdemer, E.; Dilek, D.; Beker, U.; Ash, O.A., (2011).Process optimization for Cr (VI) adsorption onto activated carbon by experimental design. Chem. Eng. J., 172: 207-218 (14 pages).
Raji, C.; Anirudhan, T.S., (1998). Batch Cr (VI) removal by polyacrylamide grafted sawdust: Kinetics and thermodynamics. Water Res., 32(12): 3772-3780 (9 pages).
Rao, LN.; Prabhakar, G., (2011). Removal of heavy metals by biosorption - an overall review. J. Eng. Res. Stud., 2:17-22 (6 pages).
Ravikumar, K.; Pakshirajan, K.; Swaminathan, T.; Balu, K., (2005). Optimization of batch process parameters using response surface methodology for dye removal by a novel adsorbent. Chem. Eng. J., 105: 131-138 (8 pages).
Rene, E.R.; Jo, M.S.; Kim, S.H.; Park, H.S., (2007). Statistical analysis of main and interaction effects during the removal of BTEX mixtures in batch conditions, using waste water treatment plant sludge microbes. Int. J. Environ. Sci. Technol., 4(2): 177-182 (6 pages).
Sahu, J.N.; Jyothikusum, A.; Meikap, B.C., (2009). Response surface modelling and optimization of chromium (VI) removal from aqueous solution using tamarind wood activated carbon in batch process. J. Hazard. Mater., 172:818-825 (8 pages).
Salman, H.A.; Ibrahim, M.I.; Tarek, M.M.; Abbas, H.S., (2014). Biosorption of heavy metals – a review. J. Chem. Sci. Tech., 3 (4): 74-102 (29 pages).
Sarin, V.; Pant, K.K., (2006). Removal of chromium from industrial waste using eucalyptus bark. Bioresour. Technol., 97: 15-20 (6 pages).
Talokar, A.Y., (2011). Studies on removal of chromium from waste water by adsorption using low cost agricultural biomass as adsorbents. Int. J. Adv. Biotech. Res., 2 (4): 452-456 (5 pages).
Wang, J.S.; Hu, X.J.; Liu, Y.J.; Xie, S.B.; Bao, Z.L., (2010). Biosorption of uranium (VI) by immobilized Aspergillus fumigates beads. J. Environ. Radioact., 101: 504-508 (5 pages).
Yu, X.; Gu, J.D.,(2007). Accumulation and distribution of trivalent chromium and effects on metabolism of the hybrid willow Salix matsudana Koidz× alba L. Arch. Environ. Contam. Toxicol.,52: 503-511 (9 pages).
Yu, X.Z.; Gu, J.D.; Huang S.Z., (2007). Hexavalent chromium induced stress and metabolic responses in hybrid willows. Ecotoxicology,16: 299-309 (11 pages).
Letters to Editor
[1] Letters that include statements of statistics, facts, research, or theories should include appropriate references, although more than three are discouraged.
[2] Letters that are personal attacks on an author rather than thoughtful criticism of the author’s ideas will not be considered for publication.
[3] Letters can be no more than 300 words in length.
[4] Letter writers should include a statement at the beginning of the letter stating that it is being submitted either for publication or not.
[5] Anonymous letters will not be considered.
[6] Letter writers must include their city and state of residence or work.
[7] Letters will be edited for clarity and length.
Send comment about this article