Scholarlink

<p>The continuous increase in green waste (GW) and food waste (FW) generation presents significant challenges for urban solid waste management. Composting is an effective technology for organic waste recycling. However, limited research has addressed greenhouse gas (GHG) emissions and ammonia (NH₃) emissions during the co-composting of GW and FW. This study examined the emission characteristics of GHGs and NH₃ during composting at four GW: FW mixing ratios (10:0, 9:1, 7:3, and 5:5, w/w). Results showed that FW addition markedly increased composting temperatures and enhanced organic matter degradation. The GF91 treatment achieved the most favorable emission balance, reducing cumulative CH₄ and N₂O emissions by 28.45% and 31.94%, respectively, compared to GW-only composting. Total GHG emissions decreased by 3.64%, with no significant increase in NH₃ emissions. Redundancy analysis (RDA) indicated that CO₂ and CH₄ emissions were primarily influenced by organic matter content and degradation dynamics, whereas NH₃ emissions were closely associated with NH₄⁺-N levels. These findings suggest that co-composting GW with FW at a 9:1 ratio can effectively reduce environmental emissions. This study provides a scientific basis for optimizing GW and FW co-composting strategies in urban waste management.</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

Greenhouse gas and ammonia emissions from co-composting of green waste and food waste

  • 期刊论文

  • 发表日期：

    2026年6月18日

查看全文
  • Binru Song,
  • Suyan Li,
  • Xiangyang Sun,
  • Junhao Gu,
  • Di Wang,
  • Yalin Li,
  • Hui Wang

摘要

The continuous increase in green waste (GW) and food waste (FW) generation presents significant challenges for urban solid waste management. Composting is an effective technology for organic waste recycling. However, limited research has addressed greenhouse gas (GHG) emissions and ammonia (NH₃) emissions during the co-composting of GW and FW. This study examined the emission characteristics of GHGs and NH₃ during composting at four GW: FW mixing ratios (10:0, 9:1, 7:3, and 5:5, w/w). Results showed that FW addition markedly increased composting temperatures and enhanced organic matter degradation. The GF91 treatment achieved the most favorable emission balance, reducing cumulative CH₄ and N₂O emissions by 28.45% and 31.94%, respectively, compared to GW-only composting. Total GHG emissions decreased by 3.64%, with no significant increase in NH₃ emissions. Redundancy analysis (RDA) indicated that CO₂ and CH₄ emissions were primarily influenced by organic matter content and degradation dynamics, whereas NH₃ emissions were closely associated with NH₄⁺-N levels. These findings suggest that co-composting GW with FW at a 9:1 ratio can effectively reduce environmental emissions. This study provides a scientific basis for optimizing GW and FW co-composting strategies in urban waste management.