【學術亮點】Enhancement of Reactive Black 5 adsorption uptake from aqueous solutions using onion skin biochar under near infrared radiation illumination
Recycling Agriculture: Valorization of Agricultural Residual Materials【Department of Environmental Engineering / Lin, Kun-Yirew / Distinguished Professor】
循環農業：農業剩餘資材及生質衍生物高值化轉換再利用【環境工程學系/林坤儀特聘教授】
| 論文篇名 | 英文： Enhancement of Reactive Black 5 adsorption uptake from aqueous solutions using onion skin biochar under near infrared radiation illumination 中文：近紅外線輻射照射下使用洋蔥皮生物炭增強活性黑5從水溶液中的吸附吸收 |
| 期刊名稱 | Energy & Environment |
| 發表年份,卷數,起迄頁數 | 2025 |
| 作者 | Chen, Yi-Chun; Jiang, Xin-Yu; Chen, Ku-Fan; Liang, Chih-Chao; Lai, Chia-Hsiang; Lin, Kun-Yi Andrew(林坤儀)*; Lin, Chia-Hua |
| DOI | 10.1177/0958305X251322897 |
| 中文摘要 | 活性黑5（Reactive Black 5，RB5）是一種偶氮染料，在開發中國家被大量排放至水體系統中，對生態系統與人類健康造成嚴重影響。本研究探討了將農業廢棄物——洋蔥皮轉化為生物炭（onion skin biochars, OSBs）的可行性。洋蔥皮經在氮氣氣氛下於500°C至700°C之間熱解（分別標記為OSB500–OSB700），並以傅立葉轉換紅外光譜（FTIR）、掃描式電子顯微鏡（SEM）、ζ電位分析及Brunauer–Emmett–Teller（BET）比表面積測定進行全面表徵。 結果顯示，OSB700對RB5的吸附能力最高，去除率達92.0%，顯著優於OSB500（33.9%）與OSB600（35.6%）。在酸性條件（pH 3）下，由於有利的ζ電位作用，其去除效率進一步提升。當結合近紅外線（near-infrared, NIR）光熱加熱（5 W·cm⁻²）時，OSB700的RB5吸附性能顯著增強，在RB5濃度為1000 ppm時可達81.09%的去除率，同時溶液溫度於7分鐘內由27.1°C上升至70°C。 細胞毒性測試結果顯示，OSB700具有良好的生物相容性，即使在100 μg·mL⁻¹的濃度下，也不會對人類血管內皮細胞（EA.hy926）造成細胞毒性。此外，RB5對EA.hy926細胞造成的毒性（1000 ppm時細胞存活率僅37.5%）在經NIR照射下的OSB700處理後，顯著改善至91.9%的細胞存活率。 綜合而言，本研究表明OSBs是一種具潛力且低成本的吸附劑，可用於水相中RB5染料的去除。特別是當OSB700結合NIR照射時，顯示出更佳的RB5吸附活性，並能有效減緩RB5所引起的細胞毒性。 |
| 英文摘要 | Reactive Black 5 (RB5), an azo dye, is released in large quantities in the water systems of developing countries, affecting many ecosystems and humans. This study explored converting onion skin, an agricultural waste product, into biochar (onion skin biochars, OSBs) through pyrolysis at 500°C to 700 °C (OSB500–OSB700) under nitrogen flow and comprehensively characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, zeta potential analysis, and Brunauer–Emmett–Teller surface area measurements. Among these, OSB700 exhibited the highest adsorption capacity for RB5 (92.0%), significantly outperforming OSB500 (33.9%) and OSB600 (35.6%). The removal efficiency was optimized under acidic conditions (pH 3) due to favorable zeta potential interactions. When combined with near-infrared radiation (NIR) photothermal heating at 5 W cm2-1, OSB700 demonstrated enhanced RB5 adsorption (81.09% removal at 1000 ppm RB5) and a photothermal-induced rise in solution temperature from 27.1°C to 70°C within 7 minutes. The cellular toxicity results indicated that OSB700 possesses a high level of biocompatibility. Even at a concentration of 100 μg mL−1, OSB700 did not induce cytotoxicity in human vascular endothelial EA.hy926 cells. Moreover, RB5-induced cytotoxicity in EA.hy926 cells (37.5% viability at 1000 ppm) was significantly alleviated to 91.9% viability after treatment with NIR-exposed OSB700. These results suggest that OSBs has considerable potential as a low-cost sorbent for removing RB5 from aqueous phases. When OSB700 was combined with NIR irradiation, it displayed enhanced RB5 adsorption activity and reduced RB5-induced cytotoxicity. |
| 發表成果與本中心研究主題相關性 | 透過本研究可進一步建立開發本研究計算所需之觸媒材料，並釐清可適合應用之環境條件! |
