气候变化领域集成服务门户(CCPortal): The peculiar role of C/N and initial pH in anaerobic digestion of lactating and non-lactating water buffalo manure

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DOI	10.1016/j.wasman.2019.12.008
	The peculiar role of C/N and initial pH in anaerobic digestion of lactating and non-lactating water buffalo manure
	Carotenuto C.; Guarino G.; D'Amelia L.I.; Morrone B.; Minale M.
发表日期	2020
ISSN	0956053X
起始页码	12
结束页码	21
卷号	103
英文摘要	Manure from lactating and non-lactating water buffaloes was separately collected from a single dairy farm and anaerobically digested under mesophilic conditions in batch mode to produce biogas. This substrate, scarcely studied in the literature, showed two peculiarities regarding two fundamental parameters in the digestion processes: C/N ratio and initial pH. Typically, optimal C/N varies from 20 to 30, but in this work an almost negligible role of this ratio is observed. We demonstrated it by investigating a very large C/N interval, from 9.7 to 50.1, not by adding selected nutrients to the system, but exploiting the natural variation of the substrate. Concerning the pH, we show that also typically considered unfavorable conditions are feasible for this substrate. In fact, though neutral-basic initial pH is proved to be optimal to run the digestion process, in line with many other kinds of dungs, also acid initial pH leads to satisfactory CH4 yield. This is principally related to the capability of water buffalo manure of auto-modifying the pH to neutrality during the digestion, when initial pH of 5.0 and 6.0 are considered. This aspect may be relevant in co-digestion processes with acid wastes, since it may allow not adding neither a buffer, nor a pH regulator to the system. All the digestion conditions are separately tested with lactating and non-lactating water buffaloes and no statistical meaningful differences exist between the two kinds of cattle. Elsevier Ltd
英文关键词	Anaerobic fermentation; Bio-methane; Biogas; Buffalo manure; CH4/CO2 ratio
scopus关键词	Biogas; Fertilizers; Manures; Anaerobic fermentation; Batch modes; CH4/CO2 ratio; Codigestion; Dairy farms; Digestion process; Mesophilic condition; Natural variation; Anaerobic digestion; biogas; carbon; methane; nitrogen; biofuel; anaerobic digestion; carbon; carbon dioxide; fermentation; manure; methane; nitrogen; pH; anaerobic metabolism; Article; batch process; biotechnological procedures; carbon nitrogen ratio; chemical composition; chemical reaction; chemical reaction kinetics; lactation; manure; nonhuman; pH measurement; physical chemistry; physical parameters; priority journal; process optimization; quantitative analysis; temperature measurement; water buffalo; anaerobic growth; animal; bioreactor; bovine; buffalo; female; lactation; pH; Bos; Bubalus; Anaerobiosis; Animals; Biofuels; Bioreactors; Buffaloes; Cattle; Female; Hydrogen-Ion Concentration; Lactation; Manure; Methane
来源期刊	Waste Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176672
作者单位	Dipartimento di Ingegneria, Università della Campania “Luigi Vanvitelli”, Via Roma 29, Aversa, Caserta 81031, Italy
推荐引用方式 GB/T 7714	Carotenuto C.,Guarino G.,D'Amelia L.I.,et al. The peculiar role of C/N and initial pH in anaerobic digestion of lactating and non-lactating water buffalo manure[J],2020,103.
APA	Carotenuto C.,Guarino G.,D'Amelia L.I.,Morrone B.,&Minale M..(2020).The peculiar role of C/N and initial pH in anaerobic digestion of lactating and non-lactating water buffalo manure.Waste Management,103.
MLA	Carotenuto C.,et al."The peculiar role of C/N and initial pH in anaerobic digestion of lactating and non-lactating water buffalo manure".Waste Management 103(2020).