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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:

用死猪粉对不同混合物进行全尺寸堆肥:过程监控,堆肥质量和毒性。

摘要大型养猪业的副产品,例如屠宰场的污泥和屠体,需要进行适当的处​​理,以防止直接在露天环境中直接处置产生负面影响。这项研究旨在通过理化分析和植物毒性分析来评估死猪粪便堆肥的效率。测试了五种处理方法,全部包括50%的木屑:T1,屠宰场污泥为50%(对照); T1为50%。T2,屠宰场污泥为20%,死猪的饲料为30%;T3,屠宰场污泥为10%,死猪的饲料为40%;T4,有20%的有机稳定堆肥和30%的死猪粉和T5,有30%的有机稳定堆肥和20%的死猪粉。植物毒性测定使用生菜,黄瓜,西莉亚,大豆,大米和小麦作为生物指示剂。尽管嗜热峰持续时间超过50天,并且最终的堆肥显示氮和磷含量高,但从死猪中吸收饲料与降低pH,降低C / N比,降低湿度和降低堆内温度有关。与对照相比,在所有测试的处理中生物指示剂的发芽都减少了。包括死猪饲料在内的处理产生的堆肥呈现出可接受的营养成分,这可能表明它们已用作有机肥料。但是,在4个月后,所有与此类堆肥接触的生物指示剂均发芽受损。图形摘要补充信息在线版本包含补充材料,网址为10.1007 / s12649-021-01422-0。尽管嗜热性峰的持续时间超过50天,并且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剂的发芽都减少了。包括死猪饲料在内的处理产生的堆肥呈现出可接受的营养成分,这可能表明它们已用作有机肥料。但是,在4个月后,所有与此类堆肥接触的生物指示剂均发芽受损。图形摘要补充信息在线版本包含补充材料,网址为10.1007 / s12649-021-01422-0。尽管嗜热性峰的持续时间超过50天,并且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剂的发芽都减少了。包括死猪饲料在内的处理产生的堆肥呈现出可接受的营养成分,这可能表明它们已用作有机肥料。但是,在4个月后,所有与此类堆肥接触的生物指示剂均发芽受损。图形摘要补充信息在线版本包含补充材料,网址为10.1007 / s12649-021-01422-0。包括死猪饲料在内的处理产生的堆肥呈现出可接受的营养成分,这可能表明它们已用作有机肥料。但是,在4个月后,所有与此类堆肥接触的生物指示剂均发芽受损。图形摘要补充信息在线版本包含补充材料,网址为10.1007 / s12649-021-01422-0。包括死猪饲料在内的处理产生的堆肥呈现出可接受的营养成分,这可能表明它们已用作有机肥料。但是,在4个月后,所有与此类堆肥接触的生物指示剂均发芽受损。图形摘要补充信息在线版本包含补充材料,网址为10.1007 / s12649-021-01422-0。
更新日期:2021-03-21
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