Waste ashes from burned sunflower hulls as new fertilising materials

环境工程 Pub Date : 2024-01-31 DOI:10.37023/ee.10.1-2.3

Jordana Ninkov, Snežana Jakšić, Predrag Nenin, Marija Gvozdenović, B. Mijić, Biljana Radović, Stanko Milić

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引用次数: 0

Abstract

Closing the loop – An EU action plan for the circular economy identified the Fertilisers Regulation revision as a key legislative proposal to boost the market for secondary raw materials. The European Commission has adopted recently EU Fertilising Products Regulation EU 2019/1009 expanding its scope to secondary-raw-material-based products (from biogenic wastes and other secondary raw materials). During the industrial processing of sunflowers, sunflower husks used as alternative fuels resulting in the generation of waste ash. Sunflower ash is a known material as a good and cheap source of potassium. In present study the tested samples of ashes is characterized as a starting raw material for the producing fertilizers in an accredited and authorized Laboratory for fertilisers quality. The tested samples is not loaded with heavy metals and the risk of recycling contaminants has not been assessed. According to the content of available (water-soluble) elements, the content of soluble phosphorus and micronutrients is very low, while potassium is completely water-soluble (40 to 50% K2O m/m), therefore, the tested ashes can be regarded as a good raw material as a source of potassium component in the final product. The pH reaction of the samples is extremely alkaline, therefore it is necessary to neutralize pH reaction in the industrial processing of this raw material, or to restrict the final product for use on acid reaction soils.

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将向日葵壳烧焦后的废灰作为新的肥料材料

闭环--欧盟循环经济行动计划将《肥料条例》修订案确定为促进二次原材料市场发展的关键立法提案。欧盟委员会最近通过了《欧盟肥料产品条例》（EU 2019/1009），将其范围扩大到以二次原材料为基础的产品（来自生物废料和其他二次原材料）。在向日葵的工业加工过程中，葵花籽壳被用作替代燃料，从而产生废灰。众所周知，葵花籽灰是一种优质廉价的钾源。在本研究中，经认可和授权的肥料质量实验室对测试的灰烬样品进行了鉴定，将其作为生产肥料的起始原料。测试样品不含重金属，也没有评估回收污染物的风险。根据可用（水溶性）元素的含量，可溶性磷和微量元素的含量非常低，而钾是完全水溶性的（40% 至 50% K2O m/m），因此，测试的灰烬可被视为最终产品中钾成分来源的良好原料。样品的 pH 反应呈强碱性，因此在对这种原料进行工业加工时，有必要中和 pH 反应，或限制最终产品用于酸性反应土壤。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

环境工程

自引率

0.00%

发文量

10962

期刊介绍： Environmental Engineering is a source journal of the Chinese Science Citation Database (CSCD), a source journal of Chinese scientific and technological papers statistics, and a dual-effect journal of the Chinese Journal Matrix. It is selected into the "Chinese Core Journals Overview" and is included in the American Chemical Abstracts (CA), Japanese JSTChina, and Chinese Biomedical Literature (CBM) databases. It mainly covers water pollution prevention and control, air pollution prevention and control, solid waste treatment and disposal, monitoring and evaluation, clean production and energy conservation and emission reduction, soil remediation, etc. Over the years, it has always had a strong team of authors and a wide readership, providing a communication platform for scientific and technological workers and college teachers and students in various fields such as scientific research, engineering design, environmental management, and construction implementation in the field of environmental engineering science.