Electrochemical Properties and Electrode Reversibility Studies of Palm Shell Activated Carbon for Heavy Metal Removal

2017 ◽  
Vol 249 ◽  
pp. 96-103 ◽  
Author(s):  
Hawaiah Imam Maarof ◽  
Mohammed A. Ajeel ◽  
Wan Mohd Ashri Wan Daud ◽  
Mohamed Kheireddine Aroua
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Electrochemical Properties ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Palm Shell

scholarly journals Adsorption of Hexavalent Chromium and Divalent Lead Ions on the Nitrogen-Enriched Chitosan-Based Activated Carbon

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1907
Author(s):  
Fatma Hussain Emamy ◽  
Ali Bumajdad ◽  
Jerzy P. Lukaszewicz
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Metal Removal ◽  
High Surface ◽  
Heavy Metal Removal ◽  
High Surface Area ◽  
Kinetics Of Adsorption ◽  
Removal Of Heavy Metals ◽  
Pseudo Second Order

Optimizing the physicochemical properties of the chitosan-based activated carbon (Ch-ACs) can greatly enhance its performance toward heavy metal removal from contaminated water. Herein, Ch was converted into a high surface area (1556 m2/g) and porous (0.69 cm3/g) ACs with large content of nitrogen (~16 wt%) using K2CO3 activator and urea as nitrogen-enrichment agents. The prepared Ch-ACs were tested for the removal of Cr(VI) and Pb(II) at different pH, initial metal ions concentration, time, activated carbon dosage, and temperature. For Cr(VI), the best removal was at pH = 2, while for Pb(II) the best pH for its removal was in the range of 4–6. At 25 °C, the Temkin model gives the best fit for the adsorption of Cr(VI), while the Langmuir model was found to be better for Pb(II) ions. The kinetics of adsorption of both heavy metal ions were found to be well-fitted by a pseudo-second-order model. The findings show that the efficiency and the green properties (availability, recyclability, and cost effectiveness) of the developed adsorbent made it a good candidate for wastewaters treatment. As preliminary work, the prepared sorbent was also tested regarding the removal of heavy metals and other contaminations from real wastewater and the obtained results were found to be promising.

Evaluation of an activated carbon from olive stones used as an adsorbent for heavy metal removal from aqueous phases

2015 ◽  
Vol 18 (1) ◽  
pp. 88-99 ◽  
Author(s):  
Thouraya Bohli ◽  
Abdelmottaleb Ouederni ◽  
Nuria Fiol ◽  
Isabel Villaescusa
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Olive Stones

Overview of activated carbon derived from biomass for heavy metal removal

2020 ◽  
Author(s):  
Z. Nur Aimi Nadhirah ◽  
M. Rabiatul Manisah ◽  
Norizah Abd. Karim ◽  
Faizul Che Pa
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Removal ◽  
Heavy Metal Removal

scholarly journals Removal of Pb(II), Fe(II) and Zn(II) using activated carbon produced from foxtail palm fruit chemically activated by KOH and H3PO4.

2019 ◽  
Vol 7 (1) ◽  
pp. 19-22
Author(s):  
Nur Sabiha Sairan ◽  
Noor Syuhadah Subki ◽  
Nik Raihan Nik Yusoff
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Phosphoric Acid ◽  
Potassium Hydroxide ◽  
Adsorption Process ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Sorption Process ◽  
Palm Fruit ◽  
Main Factor

The increasing rate of urbanization and continuous developments are the main factor which led to heavy metals contamination into the environment especially in the water bodies. However, the contamination of heavy metal can be treated using adsorption process using activated carbon. Thus, this study was based on using powdered activated carbon, which prepared from foxtail palm fruit and chemically activated using potassium hydroxide and phosphoric acid. The main parameters such as effect of chemical activating agent, effect of initial concentration of heavy metal and effect of sorbent dosage that influenced the sorption process were studied. From the result, activated carbon that was chemically activated by phosphoric acid shown the best removal compared to activated carbon that was chemically activated by potassium hydroxide. The percentage removal of Pb(II), Fe(II) and Zn(II) were 95.8%, 99.9% and 22.8% respectively using 0.5 g of activate carbon. The result indicates that the adsorption process using activated carbon that produced from plant can be applied for heavy metal removal from aqueous solution.

scholarly journals Oil palm empty fruit bunch valorization for activated and non-activated carbon nanoparticles and its heavy-metal-removal efficiency

2021 ◽  
Author(s):  
Salma Zubaidah ◽  
Adisti Permatasari Putri Hartoyo ◽  
Januard Kristian Sihombing ◽  
Elis Nina Herliyana ◽  
Saptadi Darmawan ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Activated Carbon ◽  
Oil Palm ◽  
Carbon Nanoparticles ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Activation Process ◽  
Empty Fruit Bunch

Abstract In this study, we examined activated and non-activated carbon nanoparticles (CNPs) derived from oil palm empty fruit bunch (OPEFB) fibers for their nanomaterial characteristics and their potential effectiveness in heavy metal removal. To investigate these properties, transmission electron microscopy, scanning electron microscopy (SEM), EDX, Fourier transform infrared spectroscopy, particle size analysis, X-ray diffraction, and atomic absorption spectrophotometry were employed. This study shows that both the activated and the non-activated CNPs were in the form of well-dispersed and aggregated particles. As analyzed using SEM, the external surfaces of the non-activated CNPs were determined to be irregular, while those of the activated CNPs had a more circular shape without aggregation. Carbon was the most dominant element observed in these CNPs, and the occurrence of its activation process altered the chemical functional groups of the non-activated CNPs by shifting their wavenumbers and intensities. Additionally, the activation process increased the crystallinity domain in the activated CNPs. OPEFB fibers could be valorized to obtain both activated and non-activated CNPs that had the potential efficiency to remove heavy metals, including copper (Cu), lead (Pb), iron (Fe), and zinc (Zn) at certain times. Based on the analysis of the Langmuir and Freundlich models, the activated and non-activated CNPs were found to have shown favorable adsorption to Cu, Pb, and Fe, with a percentage of heavy metal removal of over 84%. The adsorption of heavy metals was carried out via a chemical process.

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