Characterization of topsoils subjected to poorly controlled olive oil mill wastewater pollution in West Bank and Israel
Characterization of topsoils subjected to poorly controlled olive oil mill wastewater pollution in West Bank and Israel
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西岸和以色列遭受控制不善的橄榄油厂废水污染的表土特征
DOI：
10.1016/j.agee.2014.08.025
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Hassan
中科院分区：
文献类型：
--
作者：
Peikert;Benjamin;Schaumann;Gabriele Ellen;Yonatan;Bukhanovsky;Nadezhda;Borisover;Mikhail;Abo Garfha;Mahmoud;Hassan
橄榄磨坊废水（OMW）的不受控制的土地处置可能会导致土壤污染，因为它的高化学和生化需氧量和高浓度的植物毒性酚类化合物。虽然OMW对土壤质量的正面和负面影响已被报道，没有明确的共识，其对土壤疏水性或土壤有机质（SOM）质量的直接影响是显而易见的。扩大目前的表征方法，包括SOM的稳定性和物理化学性质的测定，将有利于提高对SOM质量的任何变化的理解。在这项筛选研究中，我们调查了在约旦河西岸和以色列的网站，已受到显着的OMW处置数年的表土。在大多数情况下，数量和处置方法都是未知的。除了斥水性和吸附能力等性能外，还测试了碳同位素比（δ 13 C）、热稳定性指数（TS）和接触角张力测定等新方法。所有污染土壤均表现出较强的斥水性，在许多情况下，对农用化学品的吸附能力较高，δ 13 C亏损。这与较高的有机碳和水可提取的有机物含量相吻合，其影响程度明显强于一般报告的有机废物控制处置。污染土壤的可提取有机质中含有较高数量的非芳香族化合物，如脂肪酸和糖比他们的控制。热分析表明，相对减少的柠檬酸盐的OM相比，控制，虽然有趣的是，个人的热值高于那些未受污染的控制。斥水性与同位素碳比和热值的柠檬酸OM，这两个有用的指标的OMW有机质的分解程度。柠檬酸有机质的热值也有助于描述有机质污染土壤的疏水性。
Uncontrolled land disposal of olive mill waste water (OMW) can potentially result in soil pollution as a consequence of its high chemical and biochemical oxygen demand and high concentration of phytotoxic phenolic compounds. Although both positive and negative effects of OMW on soil quality have been reported, no clear consensus regarding its direct influence on soil hydrophobicity or soil organic matter (SOM) quality is apparent. An improved understanding of any changes in SOM quality would benefit from expanding current characterization approaches to include the determination of SOM stability and physico-chemical properties. In this screening study we investigated topsoils of sites in West Bank and Israel which have been subjected to a significant OMW disposal for several years. In most cases, amounts and disposal method are unknown. In addition to properties such as water repellency and sorption capacity, novel approaches that included carbon isotope ratio (δ13C), thermostability index (TS) and contact angle tensiometry were tested. All polluted soils exhibited stronger water repellency and, in multiple cases, higher sorptive capacity for agrochemicals and were depleted inδ13C. This coincided with higher organic carbon and water extractable organic matter contents with the magnitude of effects clearly stronger than those generally reported for controlled OMW disposal. Extractable organic matter of polluted soils contained higher amounts of non-aromatic compounds like fatty acids and sugars than their controls. Thermal analysis indicated a relative reduction of the recalcitrant OM compared to the controls although interestingly, individual calorific values were higher than those of the unpolluted controls. Water repellency correlated with the isotopic carbon ratio and with the calorific value of the recalcitrant OM, which are both useful indicators for the degree of decomposition of OMW organic matter. The calorific value of recalcitrant OM may also help describe the hydrophobic potential of OMW polluted soils.
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