期刊论文

Luo, L;Chen, T

英文

Separation and Purification Technology

1383-5866

2023

317

123864

10.1016/j.seppur.2023.123864

Considering the potential release of Cr(VI) during the Fenton oxidation of Cr(pic)3, the reductive degradation of Cr(pic)3 was first evaluated. Oxalic acid (H2C2O4), dosed at 50 – 400 times higher than that of Cr(pic)3 (i.e., 1.0 – 4.0 mM), was used as the reductant. However, Cr(pic)3 was barely degraded during the 2.0 h reaction (Fig. S3). Thus, degradation of Cr(pic)3 is difficult to occur under reducing conditions, and oxidative degradation is necessary. Solution pH is one of the most

本校为第一且通讯机构

Chromium picolinate (Cr(pic)3) is widely used for feeding animals. Most Cr(pic)3 administered to animals is excreted without change. The land use of animal waste introduces Cr(pic)3 to the environment. Transformation of Cr(pic)3 in the environment releases hexavalent chromium (Cr(VI)), posing a chromium contamination risk. Because chromium (in trivalent valent) is complexed by picolinic acid (pic), removal of chromium in Cr(pic)3 form via direct adsorption and precipitation methods is rather difficult. Release of chromium from Cr(pic)3 first and then removal of it through the combination of ad...