Department of Forest and Wood Science, Federal University of Espírito Santo, Governador Lindemberg, 316, 29550-000, Jerônimo Monteiro, Espírito Santo, Brazil.
Center for Higher Studies of Itacoatiara, Amazonas State University (CESIT/UEA), Avenida Mário Andreazza, São Francisco, 69100-000, Itacoatiara, Amazonas, Brazil.
Chemosphere. 2022 Jan;286(Pt 1):131629. doi: 10.1016/j.chemosphere.2021.131629. Epub 2021 Jul 22.
The aim of this study was to evaluate the efficacy of biological and chemical remediation of chromated copper arsenate (CCA) treated Corymbia citriodora poles, removed from service after 30 years. The presence of arsenic (As), chromium (Cr) and copper (Cu) was quantified by inductively coupled plasma optical emission spectrometry (ICP-OES). Twelve species of decay fungi were used for the biological remediation assay. For chemical remediation oxalic, citric, maleic and ethylenediamine tetraacetic (EDTA) acids were used for 24 and 48 h. In biological remediation, copper-tolerant brown-rot fungi, Wolfiporia cocos, Antrodia xantha and Fibroporia radiculosa, performed the best results, with the highest removals for As (59-85 %) and Cr (38-61 %). Cu was the most easily extracted, with removals above 60 % among the tested fungi, with the best results (90-98 %) for F. radiculosa, Coniophora puteana, Antrodia vaillantii and Postia placenta. In chemical remediation, the extraction time of 48 h was the most effective, and oxalic acid generally reached the highest removals. The EDTA + oxalic acid combination reached the highest value for Cu extraction (98 %).
本研究旨在评估生物和化学修复铬酸铜砷（CCA）处理的蓝花楹杆的效果，这些蓝花楹杆在使用 30 年后被移除。电感耦合等离子体发射光谱法（ICP-OES）定量测定砷（As）、铬（Cr）和铜（Cu）的含量。使用了 12 种腐朽真菌进行生物修复试验。对于化学修复，使用草酸、柠檬酸、马来酸和乙二胺四乙酸（EDTA）酸进行 24 和 48 小时处理。在生物修复中，耐铜褐腐真菌，如密粘褶菌、黄韧革菌和粗皮纤孔菌，表现出最好的效果，对 As（59-85%）和 Cr（38-61%）的去除率最高。Cu 是最容易提取的，在所测试的真菌中，去除率超过 60%，其中 F. radiculosa、粗皮纤孔菌、密粘褶菌和糙皮侧耳的去除率最高（90-98%）。在化学修复中，48 小时的提取时间最为有效，草酸通常达到最高的去除率。EDTA+草酸的组合对 Cu 的提取率最高（98%）。
