دورية أكاديمية
Pit-lake remediation by chemically activated Chlorocardium rodiei: Simultaneous metal ion removal from acidic waters
| العنوان: | Pit-lake remediation by chemically activated Chlorocardium rodiei: Simultaneous metal ion removal from acidic waters |
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| المؤلفون: | Hamant E. France, O.L.K. Strong, Kevin M. Scotland, Tyler M. Roy, Andrew J. Vreugdenhil |
| المصدر: | Sustainable Chemistry for the Environment, Vol 6, Iss , Pp 100103- (2024) |
| بيانات النشر: | Elsevier, 2024. |
| سنة النشر: | 2024 |
| المجموعة: | LCC:Chemistry LCC:Environmental technology. Sanitary engineering |
| مصطلحات موضوعية: | Chemically activated carbon, Tropical waste wood, Acidic lake, Antagonistic interaction, Greenheart, Chemistry, QD1-999, Environmental technology. Sanitary engineering, TD1-1066 |
| الوصف: | The current study investigates the valorization of waste wood from a tropical hardwood found in Guyana (Greenheart – Chlorocardium rodiei) to high surface area activated carbons (AC). We subsequently deployed these adsorbents to sequester Mn 2+, Fe3+, and Al3+ from the acidic waters of a recreational bauxite pit-lake. We studied the impact of activation parameters such as temperature, impregnation ratio and acid concentration on the texture and surface chemistry of ACs and demonstrate that optimized low pH at point-of-zero charge (pHpzc) ACs are efficient adsorbents for the target ions. A mesoporous AC with specific surface area of 2208 m2/g, 11 % surface oxygen and pHpzc of 1.98 was produced under optimized conditions. ACs removed 93–100 % of target ions from pit-lake waters at a native pH of 3.1. Al3+ exerted an antagonistic effect on Mn2+ adsorption in synthetic binary ion systems reducing adsorption by as much as 56 %. The Sips Model fitted the adsorption data best predicting maximum adsorption capacities for Mn2+, Fe3+ and Al3+ of 17.8 mg/g, 23.7 mg/g, and 6.12 mg/g for these low pHpzc optimized materials. These materials show great promise in removing heavy metals from acidic waters. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2949-8392 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2949839224000464; https://doaj.org/toc/2949-8392 |
| DOI: | 10.1016/j.scenv.2024.100103 |
| URL الوصول: | https://doaj.org/article/65d90847691140c581d372a7525a68ea |
| رقم الأكسشن: | edsdoj.65d90847691140c581d372a7525a68ea |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 29498392 |
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| DOI: | 10.1016/j.scenv.2024.100103 |