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xuedong78

木虫 (小有名气)

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[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 ]

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goodtimega

铁杆木虫 (著名写手)

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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
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.