I. Širić, S. K. Alhag, Eman A. Al-Shahari, Željko Andabaka, Pankaj Kumar, Sami Abou Fayssal, B. Adelodun, E. Eid
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引用次数: 0
摘要
在现代废物管理实践中,寻找可持续的生物固体(又称城市污水污泥)利用方法是一项紧迫的挑战。因此,本研究旨在评估在田间条件下,污泥添加剂对三叶草(Trifolium alexandrinum L.)饲料作物的生长、生化、近似和重金属生物累积参数的影响。采用不同的 SS 混合率(即 T0:0%,作为不施用 SS 的对照;T1:5%;T2:10%)栽培三叶草。结果表明,随着 SS 混合率的增加,T. alexandrinum 的生长、生化和近似参数都有明显增加(p < 0.05)。与对照处理相比,T2 处理的 T. alexandrinum 饲料产量最高(1.92 kg m -2 fw)。T. alexandrinum嫩枝和根部的重金属分析表明,八种元素(镉 0.02-0.13、钴 0.04-0.08、铜 5.94-0.05、铬 0.43-1.68、铁 7.08-15.93、镍 0.89-2.90、锰 1.62-5.38、锌 3.30-7.04)的含量(mg kg -1 )随 SS 混合率的增加而显著增加(p < 0.05)。生物累积系数(BAF)低于 1,但铜和锌除外,这表明经 SS 处理过的土壤中的植物能快速吸收这两种元素。不过,膳食摄入模型(DIM < 1)和健康风险指数(HRI < 1)研究表明,任何 SS 处理中的重金属含量都没有超过允许限值。总体而言,SS 改良剂对 T. alexandrinum 的生长、生化、近似物和重金属特性有积极影响。因此,这项研究提出了一种低成本土壤施肥和饲料作物生产的策略,可持续促进废物回收利用。
Application of biosolid for berseem clover fertilization: Fodder characteristics and health risk assessment
Finding sustainable methods for utilizing biosolids, also known as municipal sewage sludge (SS), presents a pressing challenge in modern waste management practices. Therefore, this study aimed to evaluate the impact of SS amendment on growth, biochemical, proximate, and heavy metal bioaccumulation parameters of berseem clover ( Trifolium alexandrinum L.) fodder crop under field conditions. Trifolium alexandrinum was cultivated using different rates of SS mixing (i.e., T0: 0% as control with no SS application, T1: 5%, and T2: 10%). The results obtained showed a significant (p < 0.05) increment in growth, biochemical, and proximate parameters of T. alexandrinum with an increasing SS mixing rate. The highest productivity of T. alexandrinum fodder (1.92 kg m -2 fw) was observed in the T2 treatment as compared to the control treatment. The heavy metal analysis of shoot and root parts of T. alexandrinum showed that the contents (mg kg -1 ) of eight elements (Cd 0.02-0.13, Co 0.04-0.08, Cu 5.94-0.05, Cr 0.43-1.68, Fe 7.08-15.93, Ni 0.89-2.90, Mn 1.62-5.38, and Zn 3.30-7.04) increased significantly (p < 0.05) with SS mixing rate. The bioaccumulation factor (BAF) was below 1 except for Cu and Zn exhibiting their rapid uptake by plants from SS-treated soils. However, dietary intake modeling (DIM < 1) and health risk index (HRI < 1) studies showed that the levels of heavy metals did not exceed the permissible limits in any SS treatment. Overall, SS amendment has a positive impact on the growth, biochemical, proximate, and heavy metal characteristics of T. alexandrinum . Therefore, this study suggested a strategy for low-cost soil fertilization and fodder crop production which could sustainably benefit waste recycling.
期刊介绍:
ChileanJAR publishes original Research Articles, Scientific Notes and Reviews of agriculture, multidisciplinary and agronomy: plant production, plant protection, genetic resources and biotechnology, water management, soil sciences, environment, agricultural economics, and animal production (focused in ruminant feeding). The editorial process is a double-blind peer reviewing, Editorial Office checks format, composition, and completeness, which is a requirement to continue the editorial process. Editorial Committee and Reviewers evaluate relevance and scientific merit of manuscript.