Potential Use of Bagasse Pith for the Treatment of Wastewater Containing Metals

Bagasse pith was tested for its ability to remove cadmium and lead ions from aqueous solutions under two modes of operation, i.e. in batch systems and continuous flow systems. Time dependency experiments showed a very rapid adsorption of these cations by bagasse pith. Thus, 62% of cadmium ions and 84% of lead ions were taken up by the bagasse pith at pH 6 and ca. 99% of each cation was recovered by treatment of the pith with 0.1 M HCl. The breakthrough capacity, Q0.5, the number of theoretical plates and the theoretical plate height were calculated. The capacity of bagasse pith was found to be 6.2 and 8.5 mequiv./g for cadmium and lead ions, respectively. The feasibility of using bagasse pith for cadmium and lead ion removal from wastewater streams was addressed.

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Biosorption of lead (II) ion from aqueous solution using dum palm kernel

International Journal of Environment ◽

10.3126/ije.v4i2.12625 ◽

2015 ◽

Vol 4 (2) ◽

pp. 68-75

Author(s):

Babagana Gutti ◽

Habu Mohammed Iyodo ◽

Umar Abdullahi Isah

Keyword(s):

Contact Time ◽

Industrial Wastewater ◽

Palm Kernel ◽

Lead Ions ◽

Lead Ion ◽

Contaminated Water ◽

Experimental Limit ◽

Ion Removal ◽

Lead Ion Removal ◽

Regression Correlation

Biosorption of the lead ions from aqueous solutions using dum palm kernel was studied, the lead ion removal depends on the contact time, pH and adsorbent dosage. The optimum contact time, pH and adsorbent mass with in the experimental limit of this work were 100 minutes, 6-7, and 2.5g/L respectively. The maximum percentage of lead ions removed was 87%. The data fitted well with Temkin and Langmuir models, the regression correlation were obtained to be 0.9660 and 0.8667, respectively. The biosorbent may be economical if developed further for industrial wastewater and natural contaminated water treatment. DOI: http://dx.doi.org/10.3126/ije.v4i2.12625 International Journal of Environment Vol.4(2) 2015: 68-75

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The, Mineralization of natural hydroxyapatite for high efficiency of Pb2+ ion removal in aqueous solution

VNU Journal of Science Natural Sciences and Technology ◽

10.25073/2588-1140/vnunst.4866 ◽

2019 ◽

Vol 35 (2) ◽

Author(s):

Bui Xuan Vuong

Keyword(s):

High Efficiency ◽

Physical Adsorption ◽

Lead Ions ◽

Lead Ion ◽

Ion Adsorption ◽

Ion Removal ◽

Icp Ms ◽

Powder Samples ◽

Lead Ion Removal ◽

Natural Hydroxyapatite

Mineralized hydroxyapatite (m-HA) was prepared by soaking natural hydroxyapatite (n-HA) extracted from pig bone in the simulated body fluid (SBF) for 3 days. XRD and FE-SEM characterizations confirmed the formation of new HA crystal layer in the structure of m-HA. Experiments of lead ion adsorption were performed for both n-HA and m-HA by immersing 50 mg of each different powder samples in 100 mL of lead ion solution at a concentration of 100 ppm. Results analyzed by ICP-MS showed that m-HA has an excellent ability to remove lead ions compared to n-HA. After 4 hours of adsorption experiments, m-HA material eliminated almost 100% of lead ions while n-HA only removes 65.4%. The mechanism of lead ion removal for m-HA was determined, including the ion-exchange and physical adsorption.

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