Presentation on theme: "Removal of lead from surface water using different adsorbent materials PREPARED UNDER THE GUIDANCE OF DR. ARUN KUMAR ASSTT. PROFESSOR IIT DELHI Prepared."— Presentation transcript:
Removal of lead from surface water using different adsorbent materials PREPARED UNDER THE GUIDANCE OF DR. ARUN KUMAR ASSTT. PROFESSOR IIT DELHI Prepared by: Sachin Vishnoi(2014cev2927) Yogesh Gurnani(2014cev2928) Mohammed Mohsen
BACKGROUND Lead is one of the highly toxic metal which poses threat to human health(Bailey et al., 1999; Gloaguen and Morvan, 1997a). Lead is generally removed by precipitation, adsorption and ion exchange methods etc. Precipitation process is usually not sufficient for removal of lead from waste water upto permissible limits (Maruyama et al.,1975). Adsorption is efficiently used to remove lead from waste water (M. K. Mondal, IIT BHU) A number of researchers have used different materials as adsorbents for Pb(II) removal from water and waste water (Gupta et al., 2001; Sekar et al., 2004; Moufilh et al., 2005; Sabriye and Ali, 2006; Park et al.,
OBJECTIVE To bring down the concentration of lead from surface water below 0.1mg/L ( permissible limit as per CPCB) To identify the mechanism involved in the removal of lead ions. To do the comparative study of various adsorbent materials for removal of lead from surface water. To suggest the cost effective and most efficient adsorbent material.
METHODOLOGY Research paper on bagasse fly ash from ref. 1. Research paper on granulated activated carbon from ref. 2. Research paper on activated tea waste from ref 3. Research paper on rice husk, maize cob, and saw dust from from ref. 4. Research paper on wheat bran from ref. 5 Research paper on red mud from ref. 6 Research paper on peat moss from ref. 7 Research paper on carbon nano tubes from ref. 8
COMPARATIVE TABLE Bagasse fly ash Granulated activated carbon Activate d tea waste Rice huskMaize cobSaw dustWheat branRed mudPeat moss Carbon nano tubes Initial conc. Of adsorbate 5 to 70 ppm5to 10 mg/L 2 to 10 mg/L 25 ppm 25ppm 5 to 10 mg/L 10 mg/L 10mg/L Working pH655.86.5 6Below 75.5 to 65 Temperatur e ( 0 C) 30 0 35 0 to 39 0 30 0 27 0 35 o 30 0 22 o -24 0 30 0 Equilibrium time 60min.20hr.7-10hr.120min. 120 min 120 min 80 min8 to 10hr.2hr.40min. Adsorbent dose 10g/L100mg 1g/100m L 2g 2.5g4g30.9g0.05g Bed height0.3m to 0.5m 0.3 to 0.4m o.3m to 0.5m 0.15m 100mL Tubes Adsorption capacity(mg /g) 4-------8199.4823.9518.5846.8188.276.717.5 Model fitting Freundlich & Langmuir Bohart – Adam Temkintemkin Freundlich & langmuir Langmuirfreundlich Freundlich & Langmuir Efficiency96 to 98% Increased by 35% 99.5% Upto 98.15% Upto 78% Upto 76% 93.62%88.2%95.5% Upto 87.8% Nature of reaction ExothermicEndothermic exothermic Endothermi c Exothermic endothermi c Cost$20 per ton$308 per gm$5 per kg $500 per ton $223 per ton $5 per kg $200 per tons $2.36 per cuft $500 per g Competitio n Sodium, potassium ions H + conc.cationsH + ions Na +, K + ions Cationic surfacta-nts Cations
Present status and future scope At present these adsorbents (Bagasse fly ash, Granulated activated carbon, Activated tea waste, Rice husk, Maize cob, Saw dust, Wheat bran, Red mud, Peat moss, Carbon nanotubes) are being popularly used for removal of lead from surface water. Further research is going on to increase the removal efficiency of adsorbents and to decrease the cost of removal of lead from surface water. In future research can be done on many low cost adsorbents like maize cob, wheat bran, etc. agricultural products for the removal of lead from surface water as they are cheap in nature and effective.
Cost comparision of adsorbents AdsorbentsCost of adsorbents per kg Cost for removal of 100mg adsorbate/g of adsorbent Bagasse fly ash$0.02$ 5/10000 Activated tea waste$51$6375/10000 Rice husk$0.5$5/10000 Maize cob$0.223$9.3/10000 Saw dust$5$3120/10000 Wheat bran$0.2$42700/10000
Result and discussion From above data we can find that cost of removal of lead from surface water by adsorbents bagasse fly ash and rice husk is minimum. Efficiency of bagasse fly ash is 4mg/g and that of rice husk is 99.48mg/g of adsorbents. Removal efficiency of bagasse fly ash is 96 to 98% and that of rice husk is 98.15%. So rice husk may be the best alternative available at present among above adsorbents.
References V.K. Gupta a, ∗ and Imran Ali -Removal of lead from wastewater using bagasse fly ash—a sugar industry waste. Jyotsna Goel a,b, Krishna Kadirvelu a, ∗, Chitra Rajagopal a, Vinod Kumar Garg -Removal of lead(II) by adsorption using treated granular activated carbon: Batch and column studies. M.K. Mondal*Removal of Pb(II) ions from aqueous solution using activated tea waste: Adsorption on a fixed-bed column. N. T. Abdel-Ghani, 2M. Hefny, 3*G. A. F. El-Chaghaby Removal of lead from aqueous solution using low cost abundantly available adsorbents. Yasemin Bulut*, Zu¨beyde Baysal Removal of Pb(II) from wastewater using wheat bran. VINOD K. GUPTA*, MONIKA GUPTA and SAURABH SHARMADepartment of Chemistry, University of Roorkee, Roorkee-247 667 UP, India process development for the removal of lead and chromium from aqueous solutions using red mud-an aluminium industry waste. Akinbayo Akinbiyi Regina, Saskatchewan November, 2000 REMOVAL OF LEAD FROM AQUEOUS SOLUTIONS BY ADSORPTION USING PEAT MOSS. Yan-Hui Li a,*, Shuguang Wang b, Jinquan Wei a, Xianfeng Zhang a, Cailu Xu a, Zhaokun Luan b, Dehai Wu a, Bingqing Wei c Lead adsorption on carbon nanotubes.
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