Laboratory for Industrial Water and Ecotechnology (LIWET), Department of Green Chemistry and Technology, Ghent University Campus Kortrijk, Sint-Martens-Latemlaan 2B, B-8500, Kortrijk, Belgium.
Key Laboratory of Plant Nutrition and the Agri-Environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling, 712100, China.
Chemosphere. 2024 Sep;364:143262. doi: 10.1016/j.chemosphere.2024.143262. Epub 2024 Sep 3.
This study explored Mason pine-derived hydrochar (MPHC) as an effective adsorbent and persulfate (PS) activator for degrading bisphenol A (BPA). Increasing MPHC dosage from 0.25 to 2.0 g L raised BPA removal from 42% to 87%. Similarly, at the same MPHC dosage range and fixed PS concentration (8 mM), BPA removal by MPHC/PS increased from 66% to 91%. Additionally, at a fixed MPHC dosage (1.0 g L), higher PS concentrations (2-32 mM) resulted in an overall BPA removal increase from 78% to 99%. The optimal pH for BPA removal by MPHC was at pH 3, while for MPHC/PS was at pH 9. BPA degradation by MPHC was optimal at pH 3, whereas MPHC/PS was at pH 3 and pH 9. Additionally, pH 7 favored BPA adsorption for both MPHC and MPHC/PS. The study also considered the influence of coexisting anions and humic acid (HA). PO and NO influence adsorption on MPHC, but these anions' effect on MPHC/PS is limited. Furthermore, the existence of HA had minimal influence on BPA removal by MPHC/PS. The contributions of different reactive species by MPHC for BPA degradation are as follows: electron-hole (h) 2%, singlet oxygen (O) 7%, superoxide radicals (O) 13%, electron (e) 2%, hydroxyl radical (OH) 3%, whereas the remaining 48% removal was the contribution of adsorption. For MPHC/PS, adsorption accounted for 39 %, more reactive species were involved in degradation, and the donations are (h) 3%, sulfate radicals (SO) 3%, (O) 19%, (O) 15%, (e) 2%, and (OH) 2%. Additionally, the performance of MPHC remains stable after three operational cycles. The preparation cost of MPHC is 3.01 € kg. These results highlight the potential of MPHC as an environmentally friendly material for activating PS and removing organic pollutants, suggesting its promising application in future environmental remediation efforts.
本研究探讨了源自辐射松的水热炭（MPHC）作为一种有效的吸附剂和过硫酸盐（PS）活化剂，用于降解双酚 A（BPA）。增加 MPHC 用量从 0.25 增加到 2.0 g/L，BPA 的去除率从 42%提高到 87%。同样，在相同的 MPHC 用量范围和固定的 PS 浓度（8 mM）下，MPHC/PS 对 BPA 的去除率从 66%提高到 91%。此外，在固定的 MPHC 用量（1.0 g/L）下，较高的 PS 浓度（2-32 mM）导致 BPA 的整体去除率从 78%增加到 99%。MPHC 去除 BPA 的最佳 pH 值为 3，而 MPHC/PS 的最佳 pH 值为 9。MPHC 对 BPA 的降解最佳 pH 值为 3，而 MPHC/PS 的最佳 pH 值为 3 和 9。此外，pH 7 有利于 MPHC 和 MPHC/PS 对 BPA 的吸附。该研究还考虑了共存阴离子和腐殖酸（HA）的影响。PO 和 NO 对 MPHC 的吸附有影响，但这些阴离子对 MPHC/PS 的影响有限。此外，HA 的存在对 MPHC/PS 去除 BPA 的影响很小。MPHC 对 BPA 降解产生的不同活性物质的贡献如下：电子空穴（h）2%，单线态氧（O）7%，超氧自由基（O）13%，电子（e）2%，羟基自由基（OH）3%，而其余 48%的去除是吸附的贡献。对于 MPHC/PS，吸附占 39%，更多的活性物质参与降解，贡献为（h）3%，硫酸根自由基（SO）3%，（O）19%，（O）15%，（e）2%和（OH）2%。此外，MPHC 在三个操作循环后性能保持稳定。MPHC 的制备成本为 3.01 欧元/千克。这些结果突出了 MPHC 作为一种环保材料，用于激活 PS 和去除有机污染物的潜力，表明其在未来环境修复工作中具有广阔的应用前景。
