Chlorpyrifos-methyl solubilisation by humic acids used as bio-surfactants extracted from lignocelluloses and kitchen wastes.
Chlorpyrifos-methyl solubilisation by humic acids used as bio-surfactants extracted from lignocelluloses and kitchen wastes.
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DOI：
10.1016/j.chemosphere.2016.06.008
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发表时间：
2016-09
期刊：
影响因子：
8.8
通讯作者：
B. Scaglia;A. Baglieri;F. Tambone;M. Gennari;F. Adani
中科院分区：
文献类型：
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作者：
B. Scaglia;A. Baglieri;F. Tambone;M. Gennari;F. Adani
甲基毒死蜱（Chlorpyrifos-methyl, CLP-m）是一种广泛使用的有机磷杀虫剂，可在土壤中积累并对人体产生毒性。CLP-m可以通过合成表面活性剂的增溶作用从土壤中去除。然而，人工合成的表面活性剂本身就会在土壤中积累，造成污染现象。生物表面活性剂可以作为合成表面活性剂的替代品，降低成本和环境问题。在这项工作中，从原料生物质中提取的腐植酸（HA），即木质纤维素（HAL）和木质纤维素加厨房食物垃圾（HALF），相应的堆肥(C) （halc和HALFC）和莱纳迪酸（HAc），与商业表面活性剂（SDS， Tween 20和DHAB）进行了比较，测试了其对CLP-m的溶解作用。结果表明，只有生物质来源的HA、堆肥生物质来源的HA和SDS可溶解CLP-m: SDS = 0.006；hal = 0.007；HALC = 0.009 g；一半= 0.025；HALFC = 0.024) （g CLP-m g - 1表面活性剂）。木质纤维素HAs （HAL，HALF）对CLP-m的溶解效果与SDS一样好，而木质纤维素加厨房厨余HA （HALF，HALFC）对CLP-m的溶解能力是SDS的三倍。这种差异归因于更高浓度的烷基碳，在表面活性剂的疏水胶束核心中与CLP-m形成强连接。
Chlorpyrifos-methyl (CLP-m) is a widely used organophosphate insecticide that can accumulate in soil and become toxic to humans. CLP-m can be removed from soil by its solubilisation using synthetic surfactants. However, synthetic surfactants can accumulate in soil causing contamination phenomena themselves. Bio-surfactants can be used as an alternative to synthetic ones, reducing costs and environmental issues.In this work, humic acid (HA) extracted from raw biomasses, i.e. lignocelluloses (HAL) and lignocelluloses plus kitchen food waste (HALF), corresponding composts (C) (HALCand HALFC) and leonardite (HAc), were tested in comparison with commercial surfactants, i.e. SDS, Tween 20 and DHAB, to solubilize CLP-m.Results obtained indicated that only biomass-derived HA, composted biomass-derived HA, and SDS solubilized CLP-m: SDS = 0.006; HAL = 0.007; HALC = 0.009 g; HALF = 0.025; HALFC = 0.024) (g CLP-m g−1surfactant).Lignocelluloses HAs (HAL,HALF) solubilized CLP-m just as well as SDS while lignocellulosic plus kitchen food waste HA (HALF,HALFC) showed a three times higher CLP-m solubilisation capability. This difference was attributed to the higher concentration of alkyl-Carbon that creates strong links with CLP-m in the hydrophobic micelle-core of the surfactants.