• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>IWA(International Water Association) International Conference on Environmental Biotechnology; 20031209-10; Kuala Lumpur(MY) >Simultaneous metal leaching and aerobic digestion of livestock sludge: effects of sulfur concentration
【24h】

Simultaneous metal leaching and aerobic digestion of livestock sludge: effects of sulfur concentration

机译：牲畜污泥的金属浸出和需氧消化同时进行：硫浓度的影响

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The application of livestock sludge on agricultural lands as soil conditioners or fertilizers has the benefits of resource recycling and waste minimization of livestock farm. High concentrations of heavy metal in livestock sludge limit the land application of livestock sludge. A simultaneous metal leaching and aerobic digestion process of livestock sludge was developed and the effects of sulfur concentration on this process were investigated in this study. It was found that the rate of pH reduction increased with increasing sulfur concentration. The metabolic end product of sulfur oxidation, sulfate, was produced linearly with time and the rate of sulfate production increased with an increase in sulfur concentration. For different sulfur concentration (1-5 g/l), 2-61% of Cu; 6-66% of Zn; 41-98% of Mn; 3-51% of Cr and 24-58% of Ni were leached from livestock sludge in this study. The process with more sulfur concentration had higher rate and efficiency of metal solubilization. On the other hand, 26-32% of organic matters in livestock sludge were reduced for different sulfur concentration. There was a decrease in organic matter reduction as the sulfur concentration increased.
机译：在农业用地上使用牲畜污泥作为土壤改良剂或肥料，具有资源循环利用和牲畜场废物最小化的好处。牲畜污泥中高浓度的重金属限制了牲畜污泥在土地上的应用。研究了畜禽污泥同时进行金属浸出和好氧消化的过程，并研究了硫浓度对这一过程的影响。发现pH降低的速率随着硫浓度的增加而增加。硫氧化的代谢终产物硫酸盐随时间线性生成，硫酸盐生成速率随硫浓度的增加而增加。对于不同的硫浓度（1-5 g / l），需要2-61％的Cu；锌的6-66％; Mn的41-98％;本研究从牲畜污泥中浸出了3-51％的Cr和24-58％的Ni。硫浓度更高的过程具有更高的金属溶解速率和效率。另一方面，由于不同的硫含量，牲畜污泥中的有机物减少了26-32％。随着硫浓度的增加，有机物减少量减少。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号