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Optimization of Colour Reduction in the Pharmaceutical Effluent by Response Surface Methodology
International Journal of Environmental Chemistry
Volume 4, Issue 1, June 2020, Pages: 28-37
Received: Mar. 3, 2020; Accepted: Mar. 24, 2020; Published: Apr. 14, 2020
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Ifeoma Maryjane Iloamaeke, Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
Chineyelu Ijeamaka Egwuatu, Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
Harry Alphonsus Onwumelu, Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
Christian Elochukwu Nzoka-Okoye, Department of Pure and Industrial Chemistry, Faculty of Physical Sciences, Nnamdi Azikiwe University, Awka, Anambra State, Nigeria
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This research deals with the reduction of colour in the pharmaceutical effluent by Treculia Africans seed coat (TA) as a coagulant using Box behnken design (BBD) from the response surface methodology (RSM). The pharmaceutical effluent was subjected to physicochemical analysis to determine the level of pollution. The coagulant was characterized by Fourier transformed infrared (FTIR) and Scanning electron micrograph (SEM). Result of the physicochemical analysis of the pharmaceutical effluent showed that the colour of the effluent is purple and its pH (8.11), Hardness (176 mg/L), phosphate 10.22 mg/L) and turbidity 560 mg/L) were found to be above WHO permissible limit of effluent disposal. BBD generated 17 experimental run in which coagulation-flocculation process was carried out. These experimental data were analyzed by analysis of variance (ANOVA) and was found to fit 2nd order polynomial model (quadratic equation). The plot of predicted versus actual data confirmed that the model describe explicitly the colour reduction efficiency. The process parameters such as coagulant dosages (100-500 mg/L), settling time (10-50 minutes) and pH (2-10) were optimized to get the best treatment condition for colour reduction efficiency. The optimum colour reduction efficiency is 64.36% at coagulant dosage of 252.32 mg/L, settling time of 25.31 minutes and pH of 2.89. The SEM image after treatment suggested that pollutant has been removed from the pharmaceutical effluent since there is change in the surface morphology of the coagulant while FTIR analysis result after treatment proposed removal and addition of bonds due to interaction between the colloid particles of the pharmaceutical effluent and the coagulant. Hence, Treculia Africans seed coat (TA) can serve as alternative coagulant for reduction of colour from Pharmaceutical effluent.
Pharmaceutical Effluent, Coagulant, Response Surface Methodology, Treculia Africans, Optimization
To cite this article
Ifeoma Maryjane Iloamaeke, Chineyelu Ijeamaka Egwuatu, Harry Alphonsus Onwumelu, Christian Elochukwu Nzoka-Okoye, Optimization of Colour Reduction in the Pharmaceutical Effluent by Response Surface Methodology, International Journal of Environmental Chemistry. Special Issue: Efficiency Optimization of Pharmaceutical Effluent Treatment. Vol. 4, No. 1, 2020, pp. 28-37. doi: 10.11648/j.ijec.20200401.14
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G. Wolf, R. M. Schneider, M. C. Bongiovani, E. M. Uliana, A. Garcia do Amaral (2015). Application of Coagulation/Flocculation Process of Dairy Wastewater from Conventional Treatment Using Natural Coagulant for Reuse. Chemical Engineering Transactions, vol. 4, pp. 2041-2046.
T. Zayas, V. Romero, L. Salgado, M. Meraz, U. Morales (2007). Applicability of coagulation/flocculation and electrochemical processes to the purification of biologically treated vinasse effluent. Separation and Purification Technologyvol. 57, 270–276.
A. L. Ahmad, S. S. Wong, T. T. Teng, A. Zuhairi (2007). Improvement of alum and PACl coagulation by polyacrylamides (PAMs) for the treatment of pulp and paper mill wastewater. Chemical Engineering Journalvol. 137, pp. 510–517.
J. D. P. Theodoro; G. F. Lenz; R. F. Zara, R. Bergamasco (2013) Coagulants and Natural Polymers: Perspectives for the Treatment of Water. Plastic and Polymer Technology (PAPT), vol. 2 Issue 3, pp. 55-62.
S. D. Faust, and O. M. Aly, (1983). Chemistry of Water Treatment, Butterworth publishers, Stoneham, pp. 277-363.
A. Amirtharajah, and C. R. O’Melia. (1999). In water quality and treatment AWWA, 5th ed. American Water Works Association. Denver Co. p. 35.
J. Bratby (2006). Coagulants, in Coagulation and Flocculation in Water and Wastewater Treatment‟, 2nd ed., IWA Publishing, London, pp. 50-68.
P. Ghorbannezhad, A. Bay, M. Yolmeh, R. Yadollahi & J. Y. Moghadam (2016): Optimization of coagulation–flocculation process for medium density fiberboard (MDF) wastewater through response surface methodology, Desalination and Water Treatment, DOI: 10.1080/19443994.2016.1170636, pp. 1-17.
N. B. Prakash, V. Sockan, P. Jayakaran (2014). Waste Water Treatment by Coagulation and Flocculation. International Journal of Engineering Science and Innovative Technology, vol. 3, issue 2, pp. 479-484.
J. Beltrán-Heredia, J. Sánchez-Martín, M. A. Dávila-Acedo (2010). Optimization of the synthesis of a new coagulant from a tannin extract. Journal of Hazardous Materials, vol. 186 issue 2011, pp. 1704–1712.
R. Krishna, O. Sahu (2013). Reduction of COD and Color by Polymeric Coagulant (Chitosan). Journal of Polymer and Biopolymer Physics Chemistry, 2013, Vol. 1, No. 1, pp. 22-25.
I. M. Iloamaeke and C. O. Julius (2019). Treatment of Pharmaceutical Effluent Using Seed Of Phoenix Dactyliferaas a Natural Coagulant. Journal of Basic Physical Research, Vol. 9, No. 1 pp. 91-100.
S. Bhatia, Z. Othman, A. L. Ahmad (2006). Pretreatment of palm oil mill effluent (POME) using Moringaoleiferaseeds as natural coagulant. Journal of Hazardous Materials, vol. 145, issue2007, pp. 120–126.
Md. Asrafuzzaman, A. N. M. Fakhruddin, and Md. Alamgir Hossain (2011). Reduction of Turbidity of Water Using Locally Available Natural Coagulants. International Scholarly Research Network ISRN Microbiology Vol. 2011, Article ID 632189, 6 pages.
P. Ramesh, V. Padmanaban, and R. Sivacoumar (2015). Influence of Homemade Coagulants on the Characteristics of Surface Water Treatment: Experimental Study. International Journal of Engineering Research & Technology (IJERT), Vol. 4 Issue 12, pp. 342-345.
M. R. Shafad, I. S. Ahamad, A. Idris, Z. Zainal Abidin (2013). A Preliminary Study on Dragon Fruit Foliage as Natural Coagulant for Water Treatment International Journal of Engineering Research & Technology (IJERT), Vol. 2 Issue 12, pp. 1057-1063.
Aneesu Rahman, Aswathy Ramesh, Ranjitha O R, Suranya T, Jency Nadayil (2018). Efficiency of Jackfruit Seed Powder as a Natural Coagulant. International Research Journal of Engineering and Technology (IRJET), vol. 05, Issue: 03, pp. 3060-3062.
O. Kingsley, O. O. Iyere and E. O. Georgina (2011). Effects of Aqueous Root Extract of Treculiaafricanaon Glucose, Serum Enzymes and Body Weight of Normal Rabbits. British Journal of Pharmacology and Toxicology vol. 2, issue 4, pp. 159-162.
V. N. Osabor, D. A. Ogar, P. C. Okafor and G. E. Egbung (2009). Profile of the African Bread Fruit (Treculia Africana). Pakistan Journal of Nutrition vol. 8, issue 7, pp. 1005-1008.
APHA, AWWA, and WEF (2012) Standard Methods for the Examination of Water and Wastewater. 22nd Edition, New York.
Association of Official Analytical Chemists (AOAC). Official Methods of Analysis of AOAC International, 17th ed.; AOAC International: Gaithersburg, MD, USA, 2000.
U. Ameh. (2006). “Standard Operating Procedure National Agency for Food and Drug Administration and Control (NAFDAC) Boriki Port Hacourt, Nigeria”. PP 07/14. Heinemann Medical Books Ltd.: New York, NY. 122, 184.
Jian-Ping Wang, Yong-Zhen Chen, Xue-Wu Ge, Han-Qing Yu (2007). Optimization of coagulation–flocculation process for a paper-recycling wastewater treatment using response surface methodology. Colloids and Surfaces A: Physicochem. Eng. Aspects vol., 302, issue 2007, pp. 204–210.
Samchetshabam Gita, Ajmal Hussan, T. G. Choudhury (2016). Impact of Textile Dyes Waste on Aquatic Environments and its Treatment. Environment & Ecology vol. 35, issue 3C, pp, 2349—2353.
C. Zaharia, D. Suteu, A. Muresan, R. Muresan, A. Popescu (2009). Textile waste water tretment by homogenous oxidation with hydrogen peroxide. Environ EngManag. J., vol., 8, pp. 1359-1369.
Fakhri (2014). Application of response surface methodology to optimize the process variables for fluoride ion removal using maghemite nanoparticles. Journal of Saudi Chemical Society, vol. 18, pp. 340–347.
K. T. Thuy, and S. K. Lim (2011). Response Surface Methodological approach to optimize the coagulation–flocculation process in drinking water treatment. Chemical engineering research and design, vol. 89, pp. 1126–1135.
L. Ahmad, S. Ismail, and S. Bhatia (2005). Optimization of Coagulation-Flocculation Process for Palm Oil Mill Effluent Using Response Surface Methodology. Environmental Science & Technology, vol. 39, pp. 2828-2834.
J. P. Wang, Y. Z. Chen, Y. Wang, S. J. Yuan, H. Q. Yu (2011). Optimization of the coagulation-flocculation process for pulp mill wastewater treatment using a combination of uniform design and response surface methodology. WaterResearch, vol. 45, pp. 5633-5640.
H. Zheng, J. Ma, J. Zhai, C. Zhu, X. Tang, Y. Liao, L. Qian& Y. Sun (2013). Optimization of flocculation process by response surface methodology for diethyl phthalate removal using anionic polyacrylamide. Desalination and Water Treatment, vol. 52, pp. 5390–5400.
Safia Syazana Mohtar, Tengku Nur Zulaikha, Tengku Malim Busu, Ahmad Mujahid Md. Noor, Norsalliana Shaari, Nor Aida Yusoff1, Mohd Azizi Che Yunus, Hanapi Mat (2016). Optimization of coag-flocculation processes of a newly synthesized quaternized oil palm empty fruit bunch cellulose by response surface methodology toward drinking water treatment process application. Clean Techn Environ Policy, pp. 1-14.
M. Nourani, M. Baghdadi, M, Javan, G. N. Bidhendi (2016) Production of a biodegradable flocculant from cotton and evaluation of its performance in coagulation–flocculation of kaolin clay suspension: optimization through response surface methodology (RSM). J Environ Chem Eng., vol. 4, issue 2, pp. 1996–2003.
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