Titu Maiorescu University, 189 Calea Văcăreşti Street, 040051, Bucharest, Romania.
Politehnica University of Timisoara, 14 Remus Street, Timisoara, Romania.
Environ Sci Pollut Res Int. 2018 Dec;25(35):35548-35554. doi: 10.1007/s11356-018-3444-6. Epub 2018 Oct 23.
One of the challenges brought by the circular economy requires a reconsideration of waste, which may under certain circumstances turn into genuine resources. By extension, soil pollution with heavy metal is a major concern since it directly affects the health of the population. The goal of the present research work is to analyze the impact of the use of waste from other technological processes in agriculture: fly ash (resulting ash from thermal power plants), zeolite bush (resulting from the processing of rock from zeolite quarries), and manure (garbage from zoo technical farms). In this respect, complex treatments based on inorganic substances (fly ash and volcanic indigenous tuff with 70% clinoptilolite) were applied to less-favored agricultural soils in the absence and in the presence of an organic fertilizer (manure), respectively. After cultivating sunflower (Helianthus annuus L.), a semi-early hybrid grown in the type of soil on which fly ash has been applied, there have been obtained seed crops 15.8% higher than the seed crops grown in the soil on which no fertilizer has been applied. The results obtained when combining fly ash and manure tend to amount to those obtained when combining manure with indigenous volcanic tuff with 70% clinoptilolite. The quality of the seed crops, obtained in the case of the three types of soil on which amendments were added in the absence/presence of the fertilizer, corresponds to the requirements of the national rules and allows their food processing.
循环经济带来的挑战之一要求重新考虑废物，在某些情况下，废物可能会变成真正的资源。因此，重金属土壤污染是一个主要关注点，因为它直接影响人口健康。本研究工作的目的是分析在农业中使用其他技术过程产生的废物的影响：粉煤灰（热电厂产生的灰烬）、沸石布什（沸石矿加工岩石产生的沸石）和粪便（动物园技术农场的垃圾）。在这方面，分别在缺乏和存在有机肥（粪便）的情况下，对贫农土壤应用了基于无机物质（粉煤灰和 70%斜发沸石的火山本土凝灰岩）的复杂处理。在种植向日葵（Helianthus annuus L.）之后，一种在施粉煤灰的土壤类型上生长的半早杂交种，其种子作物比未施有机肥的土壤上的种子作物高 15.8%。当将粉煤灰与粪便结合使用时所获得的结果，趋向于当将粪便与 70%斜发沸石的本土火山凝灰岩结合使用时所获得的结果。在添加了改良剂的三种土壤类型的情况下，无论是否添加了肥料，所获得的种子作物的质量都符合国家规则的要求，并允许对其进行食品加工。
