Methane production and nitrogen mineralization in paddy soil treated with sludge from anaerobic digestion enhanced by hyperthermophilic pretreatment
Methane production and nitrogen mineralization in paddy soil treated with sludge from anaerobic digestion enhanced by hyperthermophilic pretreatment
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超高温预处理增强厌氧消化污泥处理水稻土的甲烷产量和氮矿化
DOI：
10.1007/s10333-019-00740-3
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发表时间：
2019
影响因子：
2.2
通讯作者：
Fumiko Oritate
中科院分区：
文献类型：
--
作者：
Masato Nakamura;Taira Hidaka;Masaru Yamaoka;Fumiko Oritate
超嗜热预处理（80℃，24 h）是一种在污泥厌氧消化过程中促进甲烷产量的技术。然而，关于污泥厌氧消化与超嗜热预处理作为肥料的特性以及使用污泥作为肥料的环境影响的信息很少。在本研究中，我们进行了培养实验，研究了厌氧消化污泥经超嗜热预处理后处理水稻土的甲烷生成和氮矿化特征。在15、25、30和35°C下消化的污泥样品，采用和不采用超嗜热预处理。实验中使用了60毫升的小瓶。每个小瓶装5克风干水稻土，10毫升脱气水和消化污泥。然后用丁基橡胶塞盖住，用N2代替顶空空气，在30℃下孵育。分别于7、14、28、46、57、70和84 d后测定小瓶顶空甲烷浓度。在0、14、28和84 d后测定土壤中NH4-N的浓度。结果表明，与未经预处理的污泥相比，经过超嗜热预处理的厌氧消化污泥处理的土壤产生的甲烷相对较多。另一方面，由于有机氮在超热预处理下已被分解，因此在所有消化温度下，超热预处理消化的污泥都释放出少量的NH4-N。因此，在污泥作为肥料使用时，可根据消化污泥中的NH4-N来确定超嗜热预处理污泥的适宜施用量，而不考虑施用后氮矿化的问题。
Hyperthermophilic pretreatment (80 °C, 24 h) is a technology that promotes methane yield in the anaerobic digestion of sewage sludge. However, little information is available on the characteristics of sludge anaerobically digested with hyperthermophilic pretreatment as a fertilizer and on the environmental impact of using the sludge as a fertilizer. In this study, we conducted incubation experiments to examine the characteristics of methane production and nitrogen mineralization in paddy soil treated with sludge from anaerobic digestion that was enhanced by hyperthermophilic pretreatment. Sludge samples digested under 15, 25, 30 and 35 °C with and without hyperthermophilic pretreatment were used. Sixty-mL vials were used in the experiment. Each vial was filled with 5 g of air-dried paddy soil, 10 mL of degassed water and digested sludge. It was then covered with a butyl rubber stopper, its headspace air was replaced by N2, and it was incubated at 30 °C. Methane concentrations in the headspace of the vials were measured after 7, 14, 28, 46, 57, 70 and 84 days. NH4-N concentrations in the soil were also measured after 0, 14, 28 and 84 days. The results indicated that relatively more methane tended to be produced in soil treated with sludge from anaerobic digestion that was enhanced by hyperthermophilic pretreatment than in non-pretreated sludge. On the other hand, a small amount of NH4-N was released from sludge digested with hyperthermophilic pretreatment at all digestion temperatures because organic nitrogen had been decomposed under hyperthermophilic pretreatment. Therefore, the appropriate application rate of sludge digested with hyperthermophilic pretreatment can be determined based on NH4-N in digested sludge without consideration of nitrogen mineralized after application when the sludge is used as a fertilizer.
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影响因子：
11.4
作者：
Lee, Myungyeol;Hidaka, Taira;Tsuno, Hiroshi
通讯作者：
Tsuno, Hiroshi
热预处理和停留时间对厌氧消化中活化废物降解的影响
DOI：
10.2965/jswe1978.12.112
发表时间：
1989
期刊：
Journal of Japan Society on Water Environment
影响因子：
--
作者：
Y. Li;T. Noike
通讯作者：
T. Noike
固体废物的生物回收
DOI：
--
发表时间：
1977
期刊：
--
影响因子：
--
作者：
C. Golueke
通讯作者：
C. Golueke
小型污水处理厂污泥资源化及高浓度混合甲烷发酵技术（专题：节能污水处理及资源化技术）
影响因子：
0.2
作者：
Taira Hidaka;Y. Takabe;Jun Tsumori;Ryoko Yamamoto;T. Togari
通讯作者：
T. Togari