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Full-Scale Composting of Different Mixtures with Meal from Dead Pigs: Process Monitoring, Compost Quality and Toxicity.
Waste and Biomass Valorization ( IF 2.6 ) Pub Date : 2021-03-21 , DOI: 10.1007/s12649-021-01422-0
Lucas L C Guidoni 1 , Gabriel A Martins 2 , Miguel F Guevara 1 , João N Brandalise 3 , Thomaz Lucia 4 , Michel D Gerber 5 , Luciara B Corrêa 1 , Érico K Corrêa 1
Affiliation  

ABSTRACT Abundant by-products of large swine industries, such as slaughterhouse sludge and carcasses, require adequate treatment to prevent negative effects of their direct disposal in the open environment. This study is aimed to evaluate the efficiency of composting using meal from dead pigs through physicochemical analyses and phytotoxic assays. Five treatments were tested, all including 50% sawdust: T1, with 50% slaughterhouse sludge (control); T2, with 20% slaughterhouse sludge and 30% meal from dead pigs; T3, with 10% slaughterhouse sludge and 40% meal from dead pigs; T4, with 20% organic stabilizing compost and 30% meal from dead pigs and T5, with 30% organic stabilizing compost and 20% meal from dead pigs. The phytotoxicity assays used lettuce, cucumber, celia, soybean, rice and wheat as bioindicators. Inclusion of meal from dead pigs was related to reduction in pH, C/N ratio, humidity and temperatures inside the pile, although thermophilic peaks lasted longer than 50 days and the final composts showed high content of nitrogen and phosphorous. The germination of bioindicators was reduced in all tested treatments, compared to the control. The composts from treatments that included meal from dead pigs presented acceptable nutrient content, which may indicate their use as organic fertilizers. However, after 4 months, all bioindicators in contact with such composts presented impaired germination. GRAPHIC ABSTRACT SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s12649-021-01422-0.

中文翻译:

不同混合物与死猪粉的全面堆肥:过程监控、堆肥质量和毒性。

摘要:大型养猪业的大量副产品,如屠宰场污泥和屠体,需要进行充分的处理,以防止它们在开放环境中直接处置的负面影响。本研究旨在通过理化分析和植物毒性测定来评估使用死猪粉进行堆肥的效率。测试了五种处理方法,均包括 50% 锯末: T1,含 50% 屠宰场污泥(对照);T2,含 20% 的屠宰场污泥和 30% 的死猪粉;T3,含 10% 的屠宰场污泥和 40% 的死猪粉;T4,含 20% 有机稳定堆肥和 30% 死猪粉;T5,含 30% 有机稳定堆肥和 20% 死猪粉。植物毒性试验使用莴苣、黄瓜、西莉亚、大豆、大米和小麦作为生物指示剂。死猪饲料的加入与堆内 pH、C/N 比、湿度和温度的降低有关,尽管嗜热峰持续时间超过 50 天,最终堆肥显示出高含量的氮和磷。与对照相比,在所有测试的处理中,生物指示物的萌发都减少了。包括死猪膳食在内的处理堆肥具有可接受的营养成分,这可能表明它们可用作有机肥料。然而,在 4 个月后,所有与此类堆肥接触的生物指示剂都表现出发芽受损。图形摘要补充信息 在线版本包含可在 10.1007/s12649-021-01422-0 获得的补充材料。尽管嗜热峰持续时间超过 50 天,最终的堆肥显示出高含量的氮和磷。与对照相比,在所有测试的处理中,生物指示物的萌发都减少了。包括死猪膳食在内的处理堆肥具有可接受的营养成分,这可能表明它们可用作有机肥料。然而,在 4 个月后,所有与此类堆肥接触的生物指示剂都表现出发芽受损。图形摘要补充信息 在线版本包含可在 10.1007/s12649-021-01422-0 获得的补充材料。尽管嗜热峰持续时间超过 50 天,最终的堆肥显示出高含量的氮和磷。与对照相比,在所有测试的处理中,生物指示物的萌发都减少了。包括死猪膳食在内的处理堆肥具有可接受的营养成分,这可能表明它们可用作有机肥料。然而,在 4 个月后,所有与此类堆肥接触的生物指示剂都表现出发芽受损。图形摘要补充信息 在线版本包含可在 10.1007/s12649-021-01422-0 获得的补充材料。包括死猪膳食在内的处理堆肥具有可接受的营养成分,这可能表明它们可用作有机肥料。然而,在 4 个月后,所有与此类堆肥接触的生物指示剂都表现出发芽受损。图形摘要补充信息 在线版本包含可在 10.1007/s12649-021-01422-0 获得的补充材料。包括死猪膳食在内的处理堆肥具有可接受的营养成分,这可能表明它们可用作有机肥料。然而,在 4 个月后,所有与此类堆肥接触的生物指示剂都表现出发芽受损。图形摘要补充信息 在线版本包含可在 10.1007/s12649-021-01422-0 获得的补充材料。
更新日期:2021-03-21
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