生態農業：土壤碳蓄存之預測模型優化及驗證【土壤環境科學系/鄒裕民特聘教授、劉雨庭特聘教授】
| 論文篇名 | 英文：Thiol-functionalized black carbon as effective and economical materials for Cr(VI) removal: Simultaneous sorption and reduction 中文：硫醇功能化黑炭作為有效且經濟的Cr(VI)去除材料：同時吸附與還原 |
| 期刊名稱 | Journal of Environmental Management |
| 發表年份,卷數,起迄頁數 | 2024. 360:121074 |
| 作者 | Huangmee, Kamonchanok; Hsu, Liang-Ching; Tzou, Yu-Min(鄒裕民)*; Cho, Yen-Lin; Liao, Chih-Hao; Teah, Heng Yi; Liu, Yu-Ting(劉雨庭)* |
| DOI | 10.1016/j.jenvman.2024.121074 |
| 中文摘要 | 有害的Cr(VI)仍然對環境和公共健康構成嚴重威脅，迫切需要發展有效的復育方法。本研究提出硫醇功能化黑炭（S-BC）作為去除Cr(VI)的材料，通過在80°C下將硫代乙酸（TGA）與來自稻草殘渣的黑炭（BC）混合8小時製備而成。使用1:40（g mL⁻¹）的BC與TGA比例，所得的S-BC40樣品在pH值3.5、5.5和7.5條件下顯示出顯著增強的Cr(VI)吸附能力，分別為201.23、145.78和106.60 mg g⁻¹，較BC本身提高了2.0、2.3和2.2倍。此外，S-BC40在pH 5.5時將所有吸附的Cr轉化為Cr(III)物種，Cr(OH)₃與有機Cr(III)錯合物均勻分佈。然而，在pH 3.5和7.5下，約13%的吸附Cr仍以Cr(VI)形式存在於BC上。C-中心和S-中心的硫自由基可能有助於Cr(VI)的還原，但充足的C-S基團（通過硫醇功能化補充）是S-BC樣品在pH 5.5條件下完全還原Cr(VI)的關鍵。由於其卓越的Cr(VI)吸附能力、經濟性和可得性，硫醇功能化成為改良BC的有前景方法，提供了一個同時實現有效Cr(VI)修復和廢物回收的機會。 |
| 英文摘要 | Hazardous Cr(VI) continues to pose critical concerns for environmental and public health, demanding the development of effective remediation methods. In this study, thiol-functionalized black carbon (S-BC) was proposed for Cr(VI) removal by mixing thioglycolic acid (TGA) with black carbon (BC) derived from rice straw residue at 80 °C for 8 h. Using a 1:40 (g mL−1) BC-to-TGA ratio, the resulting S-BC40 sample demonstrated significantly enhanced Cr(VI) sorption capacities of 201.23, 145.78, and 106.60 mg g−1 at pH 3.5, 5.5, and 7.5, surpassing its BC counterpart by 2.0, 2.3, and 2.2 times. Additionally, S-BC40 converted all sorbed Cr into Cr(III) species at pH 5.5, resulting in an equal distribution of Cr(OH)3 and organic Cr(III) complexes. However, approximately 13% of Cr sorbed on BC remained as Cr(VI) at pH 3.5 and 7.5. Both C-centered and S-centered thiyl radicals might contribute to Cr(VI) reduction; however, sufficient C–S groups replenished via thiol-functionalization was the key for the complete Cr(VI) reduction on S-BC samples as pH 5.5. Thanks to the exceptional Cr(VI) sorption capacity, affordability, and accessibility, thiol-functionalization stands out as a promising modification method for BC. It presents a distinct opportunity to concurrently achieve the objectives of efficient Cr(VI) remediation and waste recycling. |
| 發表成果與本中心研究主題相關性 | 此研究與永續農業創新發展中心的相關性在於它對環境污染治理和資源回收的貢獻，尤其是在重金屬污染（Cr(VI)）復育方面。該研究通過硫醇功能化黑炭（來自稻草殘渣）有效去除Cr(VI)，提供了一種可行且經濟的解決方案，符合永續農業的理念。使用農業廢棄物如稻草殘渣製備黑炭，不僅促進了廢物回收利用，還將這些材料轉化為功能性產品，用於重金屬污染的復育，減少化學品使用並降低環境影響。這一過程符合永續農業中心關注的資源循環與可持續發展的目標，同時展示了廢棄物再利用和環境污染治理技術之間的協同效應。 |
