ISCF WAVE 1 AGRI TECH: Formulating novel fertilisers and land conditioners from bioenergy wastes

ISCF WAVE 1 AGRI TECH：利用生物能源废物配制新型肥料和土地改良剂

• 批准号: BB/R021619/1
• 负责人: Kirk Semple
• 金额: $ 5.58万
• 依托单位: Lancaster University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=BB%2FR021619%2F1
• 关键词: ISCF; WAVE; AGRI; TECH; Formulating

In the face of finite sources of conventional phosphorus, and highly energy-intensive and price-sensitive nitrogen, agriculture is challenged to maintain or increase food production and simultaneously reduce its carbon impact. Fertiliser prices are strongly influenced by the crude oil price, reflecting the energy intensity of the manufacturing process. Finite nutrient sources are being depleted, whilst nutrients are lost from the land through crop harvest. It is therefore necessary to identify alternative sources of nutrients which can be safely applied to crops to sustain food production which can be produced with lower carbon impacts, and less environmental damage. The proliferation of the renewable energy sector, as a means of reducing carbon emissions, has resulted in the growth of biomass to energy schemes. Agricultural land is the "expected" sink for digestate in the UK according to government policy since these waste sources are nutrient-rich. However, a number of limitations restrict the use digestate: highly variable composition (both spatially and temporally); undesirable compounds and contaminants presence (excessive metals; plastics residues); lower nutrient content than in manufactured fertilisers (higher volumes applied); logistical constraints (spatial dispersion from source); temporal constraints (application limited to certain periods, thus need for interim storage); uncertainties of crop responses. These undesirable factors have resulted in it being a disposal cost to the AD operator (average £3.73/t in 2013). Ash is similarly plagued by inconsistent composition and other undesirable characteristics and so significant quantities are being disposed of in landfill. For both digestate and ash, their disposal means that nutrients are lost from the cycle, incurring high costs to the renewable energy industry. These limitations present a clear need for development of an alternative product or process which can present an attractive solution to both the bio-energy and agricultural sectors alike.The overarching objective is to develop commercially viable, high quality, consistent, sustainable fertilisers from bioenergy residues. Four main considerations are central to understanding the behaviour of the feedstocks in making a product: nutrient retention, form, and stability of the nutrient during processing; and whether the nutrient will be supplemented by other sources to meet a specification. Considering the aforementioned statements, the overall aim will be achieved through the following:(i) Physico-chemical characterisation of individual waste streams (ash and digestate) and putative fertiliser products, including the identification of other suitable wastes(ii) Assessment of the effects of reaction conditions on nutrient availability and potentially toxic elements presence on the fertiliser product, especially to understand in detail nitrogen retention, Phosphorus speciation and availability and long term stability controlling factors. (iii) Quantification of the impact of ash and digestate mixtures on plant growth and comparison against traditional inorganic fertilisers.(iv) Identification of legislative requirements and commercial considerations of the putative fertiliser products for use in agriculture as factual alternatives to conventional fertiliser applicationsExtensive testing on selected treatments and reaction conditions in the laboratory and plant growth in glasshouse trials will represent and step towards the applicability, commercialisation and viability of the formulated product in an agricultural setting. Benefits of such scenario are reduction in the dependence on phosphorus and nitrogen finite fertiliser resources, contribution to food security and compliance with waste hierarchy and resource recovery.

面对有限的常规磷资源，以及高度能源密集型和对价格敏感的氮气，农业面临着保持或增加粮食产量，同时减少其碳影响的挑战。化肥价格受到原油价格的强烈影响，反映了制造过程的能源密集度。有限的养分来源正在耗尽，而由于作物收割，土地上的养分也在流失。因此，有必要确定可以安全地应用于农作物的替代营养来源，以维持粮食生产，这些粮食生产可以以较低的碳影响和较少的环境破坏来生产。作为减少碳排放的一种手段，可再生能源部门的激增导致了生物质能源转换计划的增长。根据政府政策，农业用地是英国垃圾处理厂的“预期”下水道，因为这些废物来源富含养分。然而，一些限制因素限制了数字肥料的使用：高度多变的组成(在空间和时间上都是如此)；有害化合物和污染物的存在(过量金属；塑料残留)；养分含量低于人造肥料中的养分含量(施用量较大)；后勤限制(从源头开始的空间分散)；时间限制(只在某些时期使用，因此需要临时储存)；作物反应的不确定性。这些不受欢迎的因素导致它成为AD运营商的处置成本(2013年平均为3.73 GB/吨)。灰烬也同样受到成分不一致和其他不良特性的困扰，因此大量的灰烬被丢弃在垃圾填埋场。对于沼气和灰烬来说，它们的处置意味着养分在循环中损失，给可再生能源行业带来了高昂的成本。这些限制表明，显然需要开发一种替代产品或工艺，为生物能源和类似的农业部门提供一个有吸引力的解决方案。总体目标是从生物能源残留物中开发出商业上可行的、高质量的、始终如一的、可持续的肥料。四个主要考虑因素对于理解原料在制造产品中的行为至关重要：营养物质在加工过程中的保留量、形态和稳定性；营养物质是否会得到其他来源的补充以满足规格要求。考虑到上述陈述，总体目标将通过以下方式实现：(I)个别废物(灰烬和沼气)和假定的肥料产品的物理化学特征，包括确定其他合适的废物；(Ii)评估反应条件对养分可获得性的影响以及对肥料产品的潜在有毒元素的存在，特别是详细了解氮保留、磷的形态和有效性以及长期稳定性控制因素。(Iii)量化灰分和沼渣混合物对植物生长的影响，并将其与传统无机肥料进行比较。(Iv)确定在农业中作为传统肥料应用的实际替代品的假定化肥产品的立法要求和商业考虑在实验室中对选定的处理和反应条件进行的深入测试以及在温室试验中的植物生长将代表并逐步实现配方产品在农业环境中的适用性、商业化和可行性。这种情景的好处是减少了对磷和氮的依赖，有限的化肥资源，对粮食安全的贡献，以及遵守废物等级和资源回收。

项目成果

Resource Recovery from Wastes - Towards a Circular Economy

废物资源回收 - 迈向循环经济

• DOI: 10.1039/9781788016353-00113
• 发表时间: 2019
• 作者: Lag-Brotons A

Impact of sulphuric, hydrochloric, nitric, and lactic acids in the preparation of a blend of agro-industrial digestate and wood ash to produce a novel fertiliser

• DOI: 10.1016/j.jece.2020.105021
• 发表时间: 2021-01-12
• 期刊: JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
• 影响因子: 7.7
• 作者: Abelenda, Alejandro Moure;Semple, Kirk T.;Aiouache, Farid
• 通讯作者: Aiouache, Farid

esource Recovery from Wastes: Towards a Global Circular Economy

废物资源回收：迈向全球循环经济

• 发表时间: 2019
• 作者: Marshall R.

Effects of Wood Ash-Based Alkaline Treatment on Nitrogen, Carbon, and Phosphorus Availability in Food Waste and Agro-Industrial Waste Digestates

• DOI: 10.1007/s12649-020-01211-1
• 发表时间: 2020-08
• 期刊: Waste and Biomass Valorization
• 影响因子: 3.2
• 作者: Alejandro Moure Abelenda;K. Semple;A. Lag-Brotons;B. Herbert;G. Aggidis;F. Aiouache

The Nutritional Effects of Digested and Undigested Organic Wastes Combined with Wood Ash Amendments on Carrot Plants

消化和未消化的有机废物与木灰改良剂相结合对胡萝卜植物的营养影响

• DOI: 10.1007/s42729-019-00131-x
• 发表时间: 2019
• 期刊: Journal of Soil Science and Plant Nutrition
• 影响因子: 3.9
• 作者: Ibeto C