期刊论文

中文

农业环境科学学报

1672-2043

2014

33

7

1429-1435

10.11654/jaes.2014.07.025

环境保护部公益性行业科研专项“重金属污染耕地农业利用风险控制技术研究”（201009047）；

本校为第一机构

为了探讨利用超声和酸化来去除猪粪中的重金属,本文采用含固率为3%的猪粪溶液研究了超声和酸对其中Cu、Zn的去除以及影响因素。结果表明:酸可以去除猪粪中的Cu、Zn,且随着酸溶液加入量和加入无机酸后反应时间的增加,猪粪中Cu、Zn的去除率提升,在猪粪溶液中加入酸调pH达到0.70,反应3 h后猪粪中Cu、Zn的去除率可以达到58.70%、81.85%;超声也可以去除猪粪中的Cu、Zn,随着超声频率和超声时间的增加,猪粪中Cu、Zn的去除率提升,在40 kHz超声90 min,猪粪中Cu、Zn的去除率可分别达到87.43%、76.48%。超声与酸结合作用时,猪粪中Cu、Zn的去除率大于单独用酸或超声时的去除率。

Use of heavy metals-containing additives in animal feed has caused heavy metal contamination in pig manure. This study was to assess the effects of acids and ultrasound on Cu and Zn in the pig manure from aspects of removal rates and influence factors. Both acids and ultrasound could remove Cu and Zn from the pig manure. The removal of Cu and Zn by acids increased with increasing amount of acid and reaction time. The removal rate was 58.70% for Cu and 81.85% for Zn after 3 h reaction at pH 0.70. At 40 kHz of ultrasonic frequency and 90 rain of ultrasonic time, ultrasound removed Cu by 87.43% a...