Eggshell Powder as an Adsorbent for Removal of Lead (II) in Panchor’s River

Author(s):  
Norul Ahsanah Aulia Mohamad Mahani1 ◽  
◽  
Nuramidah Hamidon ◽  

Heavy metal such as lead has increase in the natural environment especially in the aqueous solution. Remediation method of adsorption offer a treatment for removing heavy metal in river. This experiment is to analyse and compare eggshell adsorbent of activated carbon in Panchor’s river through its efficiency in removing heavy metal of Lead (II). Eggshell is designed as an activated carbon through physical and chemical activation in treating the water by undergoing adsorption process of few laboratory test. The efficiency of eggshell chemical activated carbon is high as the percentages removal of Pb is 48.21% compare to physical activated carbon with 32.14%. However, this study showed that both eggshell activated carbon is an effective adsorbent in removing Pb from aqueous solution of natural environment.

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Brice Armel Ajouafeu Alongamo ◽  
Lydie Dodo Ajifack ◽  
Julius Numbonui Ghogomu ◽  
Ndi Julius Nsami ◽  
Joseph Mbadcam Ketcha

Activated carbons were obtained from the peelings of cassava tubers (Manihot esculenta) by chemical activation using potassium hydroxide and phosphoric acid at impregnation ratios of 2 : 1 and 1 : 1, respectively, at 400°C for batch adsorption of nickel(II) ions from aqueous solution. Characterization of activated carbon samples was achieved via proximate analysis, Fourier-transform infrared spectroscopy, pH of zero-point charge, Boehm method, elemental analysis, scanning electron microscopy, and iodine number determination for each adsorbent. The effects of pH, contact time, initial adsorbate concentration, and adsorbent dose were studied at 27°C in order to optimize the conditions for maximum adsorption. Equilibrium was attained after 40 minutes of contact of both materials with activating solutions. Maximum adsorption capacities of 41.15 mg/g for ACPH, 47.39 mg/g for ACPA, 35.34 mg/g for NIC, and 34.48 mg/g for RM, respectively, were obtained at pH = 4. Equilibrium data showed that the Langmuir model best described the adsorption process with R2 closed to unity, indicative of monolayer adsorption on a homogeneous surface. Kinetic studies showed that the adsorption process is controlled by the pseudo-second-order model. These results show that activated carbon prepared from cassava peelings constitutes an effective low-cost material for the treatment of wastewater containing nickel(II) ions.


2017 ◽  
Vol 100 (3) ◽  
pp. 299-312 ◽  
Author(s):  
Muhammad Imran Din ◽  
Sania Ashraf ◽  
Azeem Intisar

In this review, various methods of preparation of activated carbon from agricultural and commercial waste material are reviewed. In addition, we also discuss various activation treatments using a comparative approach. The data are organised in tabulated form for ease of comparative study. A review of numerous characterisation techniques is also provided. The effect of time and temperature, activation conditions, carbonisation conditions and impregnation ratios are explained and several physical and chemical activation treatments of raw materials and their impact on the micro- and mesoporous volumes and surface area are discussed. Lastly, a review of adsorption mechanisms of activated carbon (AC) is also provided.


2016 ◽  
Vol 24 (11) ◽  
pp. 9993-10004 ◽  
Author(s):  
Lionel Limousy ◽  
Imen Ghouma ◽  
Abdelmottaleb Ouederni ◽  
Mejdi Jeguirim

2021 ◽  
Vol 221 ◽  
pp. 239-251
Author(s):  
Syed Muhammad Salman ◽  
Fouzia Kamal ◽  
Muhammad Zahoor ◽  
Muhammad Wahab ◽  
Durr e Shahwar ◽  
...  

2009 ◽  
Vol 164 (2-3) ◽  
pp. 1130-1136 ◽  
Author(s):  
Chi K. Ahn ◽  
Donghee Park ◽  
Seung H. Woo ◽  
Jong M. Park

2014 ◽  
Vol 875-877 ◽  
pp. 196-201 ◽  
Author(s):  
Mohd Faisal Taha ◽  
Ahmad S. Rosman ◽  
Maizatul S. Shaharun

The potential of rice husk-based activated carbon as an alternative low-cost adsorbent for the removal of Pb (II) ion from aqueous solution was investigated. Rice husk-based activated carbon was preparedviachemical activation process using NaOH followed by the carbonization process at 500°C. Morphological analysis was conducted using field-emission scanning electron microscope /energy dispersive X-ray (FESEM/EDX) on three samples, i.e. raw rice husk, rice husk treated with NaOH and rice husk-based activated carbon. These three samples were also analyzed for their C, H, N, O and Si contents using CHN elemental analyzer and FESEM/EDX. The textural properties of rice husk-based activated carbon, i.e. surface area (253 m2/g) and pore volume (0.17 cm2/g), were determined by N2adsorption. The adsorption studies using rice husk-based activated carbon as an adsorbent to remove Pb (II) ion from aqueous solution were carried out at a fixed initial concentration of Pb (II) ion (150 ppm) with varying adsorbent dose as a function of contact time at room temperature. The concentration of Pb (II) ion was determined by atomic absorption spectrophotometer (AAS). The removal of Pb (II) ion from aqueous solution increased from 35 % to 82 % when the amount of rice husk-based activated carbon was increased from 0.05 g to 0.30 g. The equilibrium data obtained from adsorption studies was found to fit both Langmuir and Freundlich adsorption isotherms.


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