当前位置：
X-MOL 学术
›
ACS ES&T Water
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
H2O2-Free Sunlight-Promoted Photo-Fenton-Type Removal of Hexavalent Chromium Using Reduced Iron Oxide Dust
ACS ES&T Water ( IF 4.8 ) Pub Date : 2022-12-20 , DOI: 10.1021/acsestwater.2c00514 Jaidev Kaushik 1 , Twinkle 1 , Satyesh Raj Anand 1 , Shyam Kumar Choudhary 2 , Sumit Kumar Sonkar 1
ACS ES&T Water ( IF 4.8 ) Pub Date : 2022-12-20 , DOI: 10.1021/acsestwater.2c00514 Jaidev Kaushik 1 , Twinkle 1 , Satyesh Raj Anand 1 , Shyam Kumar Choudhary 2 , Sumit Kumar Sonkar 1
Affiliation
|
Herein, we explored a simple approach to using readily available low-cost industrial waste from steel industries known as red-colored iron oxide dust (IOD). After that, it was used for the sunlight-assisted photo removal of another toxic waste material (hexavalent chromium (Cr(VI)) from the aqueous medium showing the photo-Fenton-type mechanism, importantly without using hydrogen peroxide. The photoactive properties of chemically reduced IOD (r-IOD) have been explored to remove toxic Cr(VI) in the presence of two different sources of light (sunlight and artificial bulb light). Kinetic studies and various control experiments have been performed to check the comparative photocatalytic performance of IOD versus r-IOD nanoparticles. The values of the half-life of Cr(VI) removal strongly support the significant influence of the sun on the faster rate for the removal of ∼250 mg L–1 Cr(VI). To maintain the lower pH needed for Cr(VI) reduction, a small quantity of formic acid was used, which can be removed easily by forming CO2 and H2O. The radical trapping experiments and spectroscopic investigations of residue products obtained after the photoreduction process have been explored to support the mechanistic investigation involved in the sunlight-promoted photoreduction of Cr(VI).
中文翻译：
无 H2O2 阳光促进光芬顿型使用还原氧化铁粉尘去除六价铬
在此，我们探索了一种简单的方法来使用来自钢铁行业的现成的低成本工业废料，即红色氧化铁粉尘 (IOD)。之后，它被用于光辅助光从水介质中去除另一种有毒废料（六价铬（Cr（VI）），显示光芬顿型机制，重要的是不使用过氧化氢。已探索化学还原 IOD (r-IOD) 在存在两种不同光源（阳光和人造灯泡）的情况下去除有毒的 Cr(VI)。已进行动力学研究和各种控制实验以检查比较光催化性能IOD 与 r-IOD 纳米颗粒的比较。–1 Cr(VI)。为了保持 Cr(VI) 还原所需的较低 pH，使用了少量甲酸，甲酸可以通过形成 CO 2和 H 2 O 轻松去除。光还原后残留产物的自由基捕获实验和光谱研究已经探索了过程以支持涉及阳光促进的 Cr(VI) 光还原的机理研究。
更新日期：2022-12-20
中文翻译：
无 H2O2 阳光促进光芬顿型使用还原氧化铁粉尘去除六价铬
在此，我们探索了一种简单的方法来使用来自钢铁行业的现成的低成本工业废料，即红色氧化铁粉尘 (IOD)。之后，它被用于光辅助光从水介质中去除另一种有毒废料（六价铬（Cr（VI）），显示光芬顿型机制，重要的是不使用过氧化氢。已探索化学还原 IOD (r-IOD) 在存在两种不同光源（阳光和人造灯泡）的情况下去除有毒的 Cr(VI)。已进行动力学研究和各种控制实验以检查比较光催化性能IOD 与 r-IOD 纳米颗粒的比较。–1 Cr(VI)。为了保持 Cr(VI) 还原所需的较低 pH，使用了少量甲酸，甲酸可以通过形成 CO 2和 H 2 O 轻松去除。光还原后残留产物的自由基捕获实验和光谱研究已经探索了过程以支持涉及阳光促进的 Cr(VI) 光还原的机理研究。
京公网安备 11010802027423号