24小时热门版块排行榜

返回列表

当前主题已经存档。

当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖

xuedong78

木虫 (小有名气)

应助: 1 (幼儿园)
金币: 3003.2
红花: 1
帖子: 282
在线: 138.9小时
虫号: 659535
注册: 2008-11-21
性别: GG
专业: 环境工程固废处理

[交流] 【求助完毕】60金币求助各位高手进行一段摘要及结论的润色. 多谢关注！

Abstract :
Composting is an effective pretreatment technology for pig manure (PM) land application. However, nitrogen loss through NH3 volatilization during the thermophilic stage is one of the major drawbacks of composting. The presence of Cu and Zn in compost which come from pig feed additives is also a trouble. In this study bamboo charcoal (BC) and bamboo vinegar (BV) were added into composting piles to investigate their effects on nitrogen conservation and immobility of Cu and Zn during PM composting. During composting, total Kjeldahl nitrogen (TKN) loss decreased with the increasing amount of BC addition and appropriate combinative addition of BV. After composting, TKN loss could be decreased most by 74% with the addition of 3% BC + 0.4% BV, compared with control. Mobility of Cu and Zn also decreased with the increasing amount of BC. The combinative addition of BV could further enhance the immobilization of Cu and Zn. Mobility of Cu and Zn could be decreased most by 35 and 39%, respectively, with 9% BC addition, compared with control. Results of the experiment indicated that adding of BC or BC + BV into PM composting material could be an effective method to reduce TKN loss and mobility of Cu and Zn.

Conclusions:
The addition of BC or BC + BV into PM composting material influenced the parameter changes. It shorted the time to entering thermophilic phase, decreased pH value at the thermophilic phase, and increased GI of the composting material. Mainly the addition of BC or BC + BV reduced TKN loss and mobility of Cu and Zn in PM composting material. TKN loss could be reduced most by 74% in treatment 3% BC + 0.4% BV. Mobility of Cu and Zn could be reduced most by 35 and 39% in treatment 9% BC. This indicated that the addition of BC or BC + BV into PM composting material were an effective method to reduce negative effects in PM composting.

[ Last edited by qingshaojun0823 on 2009-11-16 at 23:28 ]

回复此楼

» 猜你喜欢

遇见不省心的家人很难过已经有24人回复
依托企业入选了国家启明计划青年人才。有无高校可以引进的。已经有6人回复
博士延得我，科研能力直往上蹿已经有9人回复
天津大学招2026.09的博士生，欢迎大家推荐交流（博导是本人）已经有6人回复
AI 太可怕了，写基金时，提出想法，直接生成的文字比自己想得深远，还有科学性已经有6人回复
有院领导为了换新车，用横向课题经费买了俩车已经有9人回复
酰胺脱乙酰基已经有13人回复
同年申请2项不同项目，第1个项目里不写第2个项目的信息，可以吗已经有4人回复
有时候真觉得大城市人没有县城人甚至个体户幸福已经有10人回复

1楼 2009-09-07 11:38:41

已阅关注TA 给TA发消息送TA红花 TA的回帖

goodtimega

铁杆木虫 (著名写手)

翻译EPI: 4
应助: 1 (幼儿园)
金币: 8138.7
散金: 570
红花: 1
帖子: 1489
在线: 527.5小时
虫号: 820248
注册: 2009-08-02
专业: 高分子材料结构与性能

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
xuedong78(金币+20,VIP+0):同样很感激热心相助，好些地方在我看来都很精彩。有些地方还需向您请教：1.abstract:remains an issue，issue是不是不常用啊，我想表达类似“猪粪堆肥中的铜、锌有其环境安全隐患是个麻烦”的意思。2.abstract: substituted into好像不太合适，我想表达“加入”3.abstrace 中decreasing up to及conclusion 中reduces up to 的up to,我想表达增加或减少了多少，是不是应该用by啊？再次谢谢相助 9-7 22:32
xuedong78(金币+9,VIP+0):感谢您的回复 9-8 10:22

Abstract :
Composting is an effective pretreatment technology for pig manure land application. However, nitrogen loss through NH3 volatilization during the thermophilic stage is one of the major drawbacks of composting. The presence of Cu and Zn in compost arising from pig feed additives remains an issue. In the present study the efect of bamboo charcoal and bamboo vinegar substituted into composting piles on nitrogen conservation and immobility of Cu and Zn during PM composting is investigated. During composting, total Kjeldahl nitrogen loss decreases with the increasing amount of BC addition and appropriate combinative BV addition. After composting, TKN loss decreases by 74% with the addition of 3% BC + 0.4% BV. Correspondingly mobility of Cu and Zn decreases with the increasing amount of BC. The combinative addition of BV further enhances the immobilization of Cu and Zn, with the associated mobility of Cu and Zn decreasing up to 35 and 39%, respectively, in accordance with 9% BC addition. Results of the experiment indicate that adding of BC or BC + BV into PM composting material stands for an effective method to reduce TKN loss and mobility of Cu and Zn.

Conclusions:
The addition of BC or BC + BV into PM composting material influenced the parameter changes. It reduces the time to entering thermophilic phase, decreases pH value at the thermophilic phase, and increases GI of the composting material. The predominant addition of BC or BC + BV reduces TKN loss and mobility of Cu and Zn in PM composting material. TKN loss reduces up to 74% in treatment 3% BC + 0.4% BV. Mobility of Cu and Zn reduces up to 35 and 39% in treatment 9% BC. This indicates that the addition of BC or BC + BV into PM composting material constitutes an effective method to reduce negative effects in PM composting.