Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon
The level of contamination in industrial wastewater has been a serious environmental challenge of our time. Various researchers have reported that the adsorption process using different adsorbents is a promising technique for treating heavy metal-contaminated wastewater. This study investigated the...
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Sumy State University
2024-07-01
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| Series: | Журнал інженерних наук |
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| Online Access: | https://jes.sumdu.edu.ua/adsorptive-removal-of-lead-ii-pollutants-from-wastewater-using-corncob-activated-carbon/ |
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| author | Sunusi Aliyu Nurudeen Salahudeen A. A. Rasheed |
| author_facet | Sunusi Aliyu Nurudeen Salahudeen A. A. Rasheed |
| author_sort | Sunusi Aliyu |
| collection | DOAJ |
| description | The level of contamination in industrial wastewater has been a serious environmental challenge of our time. Various researchers have reported that the adsorption process using different adsorbents is a promising technique for treating heavy metal-contaminated wastewater. This study investigated the adsorptive removal of lead (II) from wastewater using corncob-activated carbon. Activated carbon was synthesized from a raw corncob. The synthesized activated carbon was applied as a sorbent in batch lead (II) adsorption in an aqueous lead (II) solution. Scanning electron microscopy, Fourier transformed infrared (FTIR), and Brunauer–Emmett–Teller (BET) theory characterized the synthesized activated carbon. A batch adsorption study investigated the effects of dosage, contact time, and the initial concentration of lead (II) on the sorption of Pb2+ on the synthesized activated carbon. The highest removal of lead recorded was 95 % at an adsorbent dosage of 2.5 g/L in 2 h. The highest adsorption capacity was 16.46 mg/g at the same conditions. The results showed that percentage removal increased with dosage and contact time but decreased with the initial metal ion concentration. Adsorption kinetics were best described with the pseudo-second-order kinetics, while the Langmuir isotherm model best fitted equilibrium adsorption in the study. The FTIR results showed the presence of several functional groups like carboxyl, hydroxyl, and amino, indicating good interaction with lead metal ions. The BET characterization revealed the activated corncob’s specific surface area and pore volume to be 249 m2/g and 0.164 cm3/g. This work shows that activated carbon can be synthesized from agricultural waste such as corncob and be used as an effective adsorbent for heavy metal removal, such as lead, from wastewater. |
| format | Article |
| id | doaj-art-8fb64e0d4cce41b0bb0f49f8b6a57f6f |
| institution | OA Journals |
| issn | 2312-2498 2414-9381 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Sumy State University |
| record_format | Article |
| series | Журнал інженерних наук |
| spelling | doaj-art-8fb64e0d4cce41b0bb0f49f8b6a57f6f2025-08-20T01:58:37ZengSumy State UniversityЖурнал інженерних наук2312-24982414-93812024-07-01112H1H1010.21272/jes.2024.11(2).h1Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated CarbonSunusi Aliyu0https://orcid.org/0009-0009-4033-6143Nurudeen Salahudeen1https://orcid.org/0000-0002-7537-8011A. A. Rasheed2Department of Chemical and Petroleum Engineering, Bayero University, PMB 3011, Kano, NigeriaDepartment of Chemical and Petroleum Engineering, Bayero University, PMB 3011, Kano, NigeriaDepartment of Chemical and Petroleum Engineering, Bayero University, PMB 3011, Kano, NigeriaThe level of contamination in industrial wastewater has been a serious environmental challenge of our time. Various researchers have reported that the adsorption process using different adsorbents is a promising technique for treating heavy metal-contaminated wastewater. This study investigated the adsorptive removal of lead (II) from wastewater using corncob-activated carbon. Activated carbon was synthesized from a raw corncob. The synthesized activated carbon was applied as a sorbent in batch lead (II) adsorption in an aqueous lead (II) solution. Scanning electron microscopy, Fourier transformed infrared (FTIR), and Brunauer–Emmett–Teller (BET) theory characterized the synthesized activated carbon. A batch adsorption study investigated the effects of dosage, contact time, and the initial concentration of lead (II) on the sorption of Pb2+ on the synthesized activated carbon. The highest removal of lead recorded was 95 % at an adsorbent dosage of 2.5 g/L in 2 h. The highest adsorption capacity was 16.46 mg/g at the same conditions. The results showed that percentage removal increased with dosage and contact time but decreased with the initial metal ion concentration. Adsorption kinetics were best described with the pseudo-second-order kinetics, while the Langmuir isotherm model best fitted equilibrium adsorption in the study. The FTIR results showed the presence of several functional groups like carboxyl, hydroxyl, and amino, indicating good interaction with lead metal ions. The BET characterization revealed the activated corncob’s specific surface area and pore volume to be 249 m2/g and 0.164 cm3/g. This work shows that activated carbon can be synthesized from agricultural waste such as corncob and be used as an effective adsorbent for heavy metal removal, such as lead, from wastewater.https://jes.sumdu.edu.ua/adsorptive-removal-of-lead-ii-pollutants-from-wastewater-using-corncob-activated-carbon/metal-contaminated wastewater treatmentadsorptioncorncob agro-wastelead ionadsorbentisothermkinetics |
| spellingShingle | Sunusi Aliyu Nurudeen Salahudeen A. A. Rasheed Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon Журнал інженерних наук metal-contaminated wastewater treatment adsorption corncob agro-waste lead ion adsorbent isotherm kinetics |
| title | Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon |
| title_full | Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon |
| title_fullStr | Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon |
| title_full_unstemmed | Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon |
| title_short | Adsorptive Removal of Lead (II) Pollutants from Wastewater Using Corncob-Activated Carbon |
| title_sort | adsorptive removal of lead ii pollutants from wastewater using corncob activated carbon |
| topic | metal-contaminated wastewater treatment adsorption corncob agro-waste lead ion adsorbent isotherm kinetics |
| url | https://jes.sumdu.edu.ua/adsorptive-removal-of-lead-ii-pollutants-from-wastewater-using-corncob-activated-carbon/ |
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