AI Article Synopsis
- - The study investigates recycling fruit peel resources as a method for extracting heavy metals (HMs) using a custom composite extractant made from fruit peels and chemicals.
- - The most effective combinations identified were CR-NO5 and CL-NT4, achieving extraction rates of 92.6% for cadmium (Cd) and 98.4% for zinc (Zn) under specific conditions.
- - Additionally, the use of these extractants enhanced the nutrient content of sludge and increased the soluble components of HMs, suggesting potential for safe treatment of HMs and better resource use of fruit peel waste.
Article Abstract
The recycling of fruit peel resources is a current research hotspot. This study screened and configured a composite extractant consisting of peel and chemical extractant through extraction experiments and explored the heavy metals(HMs) release effect. The results showed that (CR), (CL), 0.16 mol·L nitrilotriacetic acid(NTA) with 0.04 mol·L oxalic acid(NO5), and 0.12 mol·LNTA with 0.08 mol·Ltartaric acid(NT4) had the strongest extraction ability. After the cross-combination was optimized, CR-NO5 (1:50, 6 h, 35 °C) and CL-NT4 (1:50, 36 h, 45 °C) had the highest extraction rates for Cd and Zn, which were 92.6 % and 98.4 %, respectively. The CL series increased the nutrient content of sludge (157.75-177.88 g·kg). The four combined extractants increased the proportion of soluble components of HMs in sludge (14-36 %). Therefore, the combined leaching agent will provide a valuable reference for the harmless treatment of HMs in sludge and the resource utilization of peel waste.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11401087 | PMC |
| http://dx.doi.org/10.1016/j.fochx.2024.101760 | DOI Listing |
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