EFFECT OF EXOGENOUS ADDITIVES ON HEAVY METAL PASSIVATION AND NITROGEN RETENTION IN PIG MANURE COMPOSTING

IF 3.6 4区农林科学 Q1 AGRONOMY

Frontiers of Agricultural Science and Engineering Pub Date : 2023-01-01 DOI:10.15302/j-fase-2023487

Ziqi Wang, Guotao Sun, Jiamin Wang, Gongshe Yang

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Abstract

ABSTRACT The widespread use of feed additives in intensive and large-scale pig farming has resulted in high levels of heavy metals in pig manure. The long-term application of organic fertilizers containing high levels of heavy metals leads to the accumulation of heavy metals in the soil, which not only causes heavy metal pollution in the soil, and also affect food safety and endanger human health. Composting is an economical and effective technical measures to achieve environmentally-sustainable treatment of pig manure and is a practical method to reduce the problem of heavy metals and to improve the resource value of pig manure. The composting process is accompanied by high temperatures and the production and emission of gases, and also lead to changes in the nitrogen content of the compost and provide opportunity for heavy metal passivation additives. This paper summarizes the forms and types of heavy metals present in pig manure and reviews the progress of research as well as the techniques and problems of in the composting process, and provides recommendations for research on heavy metal passivation and nitrogen retention in pig manure composting.

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外源添加剂对猪粪堆肥中重金属钝化和氮滞留的影响

在集约化和规模化养猪业中，饲料添加剂的广泛使用导致猪粪中重金属含量高。长期施用重金属含量较高的有机肥，导致土壤中重金属积累，不仅造成土壤重金属污染，还会影响食品安全，危害人体健康。堆肥是实现猪粪环境可持续处理的一种经济有效的技术措施，是减少猪粪重金属污染、提高猪粪资源价值的实用方法。堆肥过程伴随着高温和气体的产生和排放，也导致堆肥中氮含量的变化，并为重金属钝化添加剂提供了机会。本文综述了猪粪中重金属的形态和类型，综述了研究进展以及堆肥过程中存在的技术和问题，并对猪粪堆肥中重金属钝化和留氮的研究提出了建议。

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来源期刊

Frontiers of Agricultural Science and Engineering AGRONOMY-

CiteScore

5.10

自引率

2.70%

发文量

期刊介绍： Frontiers of Agricultural Science and Engineering (FASE) is an international journal for research on agricultural science and engineering. The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science, Agricultural Biotechnology, Horticulture, Plant Protection, Agricultural Engineering, Forestry Engineering, Agricultural Resources, Animal Husbandry and Veterinary Medicine, Applied Ecology, Forestry and Fisheries. FASE is committed to provide a high level scientific and professional forum for researchers worldwide to publish their original findings and to utilize these novel findings to benefit the society.