Removal of Chromium from a Contaminated Soil Using Oxalic Acid, Citric Acid, and Hydrochloric Acid
Dynamics, Mechanisms, and Concomitant Removal of Non-Targeted Metals
Bibliographic Data
| ID | 15499354 |
|---|---|
| Authors | Yuhuan Sun (0000-0002-9079-0733, Qingdao University of Science and Technology), Feng Guan (0000-0002-6251-2592, Qingdao University of Science and Technology), WeiWei Yang (0000-0001-9136-1597, Qingdao University of Science and Technology), Fayuan Wang (0000-0003-1345-256X, Qingdao University of Science and Technology, corresponding author) |
| Year | 2019 |
| Volume | 16 |
| Issue | 15 |
| Pages | 2771-2771 |
| Publication date | 2019-08-02 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Environmental Research and Public Health (JOURNAL) |
| Journal identifiers | ISSN: 1661-7827 • E-ISSN: 1660-4601 |
| Publisher | Multidisciplinary Digital Publishing Institute (PUBLISHER • CH) |
| DOI | 10.3390/ijerph16152771 |
| PMID | 31382525 |
| OpenAlex | W2965315416 |
| Language | EN |
| Citations received | 3 |
| References cited | 43 |
Soil leaching is an effective remediation technique using agents to leach the target pollutants from the soil. However, the dynamics and mechanisms for leaching of Cr and other non-pollutant metals from Cr-contaminated soils are not yet well understood. Here, column leaching experiments were conducted to determine the effect of hydrochloric acid (HCl), citric acid (CA), and oxalic acid (OX) on the leaching of Cr, as well as of Ca, Mg, Fe, and Mn, from a soil contaminated by a Cr slag heap. Acid leaching decreased soil pH and enhanced the mobility of all the surveyed metals. Leaching dynamics varied with both metals and acids. OX had the highest removal rates for Cr, Fe, Mn, and Mg, but had the poorest ability to leach Ca. HCl leached the largest amount of Ca, while CA leached similar amounts of Mg and Mn to OX, and similar amounts of Fe and Cr to HCl. Cr in the leachates was correlated with Ca, Mg, Fe, and Mn. Cr mainly interacted with soil mineral components and showed a punctate distribution in soil particles. The X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), and X-ray photoelectron spectroscopy (XPS) analyses showed soil mineralogical and morphological properties were differently altered after leaching by different acids. Complexation of Cr(III), competitive desorption, and reduction of Cr(VI) make significant contribution to Cr leaching by organic acids. In conclusion, OX can be applied in leaching remediation of Cr-contaminated soil, but the concomitant removal of other non-targeted metals should be taken into account because of the loss of soil minerals and fertility
Chromium · Citric acid · Contamination · Environmental remediation · Hydrochloric acid · Leaching (pedology · Nuclear chemistry · Oxalic acid · Soil contamination · Soil water · Chemistry · Chromium effects and bioremediation · Environmental remediation with nanomaterials · Heavy metals in environment · Environmental Chemistry · Geology · Inorganic Chemistry · Soil Science
Successful Outcome of Phytostabilization in Cr(VI) Contaminated Soils Amended with Alkalizing Additives
Isolation and Identification of Chromium Reducing Bacillus Cereus Species from Chromium-Contaminated Soil for the Biological Detoxification of Chromium
Pre-Drying of Chlorine–Organic-Contaminated Soil in a Rotary Dryer for Energy Efficient Thermal Remediation
| Unique citing works | 3 |
|---|---|
| Citations per year | 0.5 |
| Citation span | 2020 - 2022 (3) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 3 |