Scholarlink

<p>Swine farming produces a large amount of organic waste, which can be effectively treated using anaerobic digestion. However, swine mortality waste, particularly bones and teeth, poses additional challenges, potentially resulting in blockages, accumulation in the biodigesters, and reduced efficiency. This study investigated the degradation of these materials in covered lagoon biodigesters (CLB) in both laboratory and full-scale settings. Under laboratory conditions, bone mass decreased by approximately 35% over 180 days, while tooth mass decreased by 22%. The degradation rate decreased over time as the organic fraction was consumed. SEM revealed structural changes, such as crack formation and loss of integrity. At real-scale conditions, there was minimal mass loss, indicating particle accumulation in bone pores. The annual accumulation of fixed solids in a CLB was calculated to be 3.4% of the biodigester’s total volume. These findings emphasize the importance of effective carcass shredding and sludge management strategies for preventing sedimentation and preserving biodigesters performance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Investigation of swine bone and tooth degradation in covered lagoon biodigesters

  • 期刊论文

  • 发表日期：

    2025年11月26日

查看全文
  • João Fernando Ferri da Silva,
  • Deisi Cristina Tápparo,
  • Ana Claudia Lazaroto,
  • Sinara Calza,
  • Karina Cesca,
  • Ricardo Radis Luís Steinmetz,
  • Marco Di Luccio,
  • Airton Kunz

摘要

Swine farming produces a large amount of organic waste, which can be effectively treated using anaerobic digestion. However, swine mortality waste, particularly bones and teeth, poses additional challenges, potentially resulting in blockages, accumulation in the biodigesters, and reduced efficiency. This study investigated the degradation of these materials in covered lagoon biodigesters (CLB) in both laboratory and full-scale settings. Under laboratory conditions, bone mass decreased by approximately 35% over 180 days, while tooth mass decreased by 22%. The degradation rate decreased over time as the organic fraction was consumed. SEM revealed structural changes, such as crack formation and loss of integrity. At real-scale conditions, there was minimal mass loss, indicating particle accumulation in bone pores. The annual accumulation of fixed solids in a CLB was calculated to be 3.4% of the biodigester’s total volume. These findings emphasize the importance of effective carcass shredding and sludge management strategies for preventing sedimentation and preserving biodigesters performance.