Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption
Abstract Ammonium ions (NH4 +) are commonly found in contaminated water and are a contributing factor to water eutrophication. Carbonized rice husk, derived from various biomass sources, possesses a porous structure, and its characteristics are influenced by the feedstock and pyrolysis conditions. H...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-08-01
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| Series: | Applied Biological Chemistry |
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| Online Access: | https://doi.org/10.1186/s13765-023-00806-1 |
| _version_ | 1827633411600154624 |
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| author | Yun-Gu Kang Jae-Han Lee Jun-Yeong Lee Jun-Ho Kim Taek-Keun Oh Jwa-Kyung Sung |
| author_facet | Yun-Gu Kang Jae-Han Lee Jun-Yeong Lee Jun-Ho Kim Taek-Keun Oh Jwa-Kyung Sung |
| author_sort | Yun-Gu Kang |
| collection | DOAJ |
| description | Abstract Ammonium ions (NH4 +) are commonly found in contaminated water and are a contributing factor to water eutrophication. Carbonized rice husk, derived from various biomass sources, possesses a porous structure, and its characteristics are influenced by the feedstock and pyrolysis conditions. Hence, this study aimed to investigate the applicability of carbonized rice husk as an absorbent for NH4 + removal. The adsorption kinetics were analyzed using the Pseudo-first-order and Pseudo-second-order models, while the adsorption characteristics were assessed using the Langmuir and Freundlich isotherms. The adsorption rate of NH4 + by carbonized rice husk increased until 240 min and then gradually approached equilibrium state. Notably, the highest NH4 + adsorption rate was observed in pH 7.1 carbonized rice husk 36.045 mg/g∙min. Moreover, the NH4 + adsorption capacity exhibited an increase with increasing concentration and quantity of the solution. The pH of the carbonized rice husk was found to influence the NH4 + adsorption process, with higher pH values corresponding to increased NH4 + adsorption rates. The NH4 + sorption rate carbonized rice husk was higher in pH 11.0 at 31.440 mg/g compared to pH 6.1 (7.642 mg/g) and pH 7.1 (10.761 mg/g). These findings highlight the impact of pyrolysis conditions on the adsorption characteristics of carbonized rice husk. |
| first_indexed | 2024-03-09T14:59:22Z |
| format | Article |
| id | doaj.art-be77da2182e4409ebfaa8f001f9f8c43 |
| institution | Directory Open Access Journal |
| issn | 2468-0842 |
| language | English |
| last_indexed | 2024-03-09T14:59:22Z |
| publishDate | 2023-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Applied Biological Chemistry |
| spelling | doaj.art-be77da2182e4409ebfaa8f001f9f8c432023-11-26T14:02:16ZengSpringerOpenApplied Biological Chemistry2468-08422023-08-0166111010.1186/s13765-023-00806-1Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorptionYun-Gu Kang0Jae-Han Lee1Jun-Yeong Lee2Jun-Ho Kim3Taek-Keun Oh4Jwa-Kyung Sung5Department of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National UniversityDepartment of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National UniversityDepartment of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National UniversityDepartment of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National UniversityDepartment of Bio-Environmental Chemistry, College of Agriculture and Life Science, Chungnam National UniversityDepartment of Crop Science, College of Agriculture, Life Science and Environmental Chemistry, Chungbuk National UniversityAbstract Ammonium ions (NH4 +) are commonly found in contaminated water and are a contributing factor to water eutrophication. Carbonized rice husk, derived from various biomass sources, possesses a porous structure, and its characteristics are influenced by the feedstock and pyrolysis conditions. Hence, this study aimed to investigate the applicability of carbonized rice husk as an absorbent for NH4 + removal. The adsorption kinetics were analyzed using the Pseudo-first-order and Pseudo-second-order models, while the adsorption characteristics were assessed using the Langmuir and Freundlich isotherms. The adsorption rate of NH4 + by carbonized rice husk increased until 240 min and then gradually approached equilibrium state. Notably, the highest NH4 + adsorption rate was observed in pH 7.1 carbonized rice husk 36.045 mg/g∙min. Moreover, the NH4 + adsorption capacity exhibited an increase with increasing concentration and quantity of the solution. The pH of the carbonized rice husk was found to influence the NH4 + adsorption process, with higher pH values corresponding to increased NH4 + adsorption rates. The NH4 + sorption rate carbonized rice husk was higher in pH 11.0 at 31.440 mg/g compared to pH 6.1 (7.642 mg/g) and pH 7.1 (10.761 mg/g). These findings highlight the impact of pyrolysis conditions on the adsorption characteristics of carbonized rice husk.https://doi.org/10.1186/s13765-023-00806-1AdsorptionAmmonium ion (NH4 +)BiocharPyrolysis condition |
| spellingShingle | Yun-Gu Kang Jae-Han Lee Jun-Yeong Lee Jun-Ho Kim Taek-Keun Oh Jwa-Kyung Sung Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption Applied Biological Chemistry Adsorption Ammonium ion (NH4 +) Biochar Pyrolysis condition |
| title | Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption |
| title_full | Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption |
| title_fullStr | Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption |
| title_full_unstemmed | Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption |
| title_short | Effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient NH4 + adsorption |
| title_sort | effect of pyrolysis conditions on chemical properties of carbonized rice husks for efficient nh4 adsorption |
| topic | Adsorption Ammonium ion (NH4 +) Biochar Pyrolysis condition |
| url | https://doi.org/10.1186/s13765-023-00806-1 |
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