Gasification filter cake reduces the emissions of ammonia and enriches the concentration of phosphorous in Caragana microphylla residue compost. (November 2020)

• Record Type: Journal Article
• Authors: Wang, Xingyi; Zheng, Wende; Ma, Yongjie; Ma, Jiawei; Gao, Yan ming; Zhang, Xueyan; Li, Jianshe
• Is Part Of: Bioresource technology. Volume 315(2020)
• Publication Date: 2020-11
• Subjects: Caragana compost -- Gasification filter cake -- Nitrogen loss -- Greenhouse gases -- Phosphorus enrichment; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.123832
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Gasification filter cake (GFC) accelerated the composting of Caragana microphylla . Addition of 25% GFC enriched total and available P in compost. Addition of 12.5% GFC decreased NH3 emissions from compost. Except at 50%, GFC reduced the % loss of total organic C and total N. GFC can be used to improve compost quality and protect the environment. Abstract: Nutrient loss is a major problem during agricultural waste composting. This study investigated the impact of gasification filter cake (GFC) addition on gaseous emissions and nutrient loss during composting of chicken manure mixed with Caraganna microphylla straw. The GFC was added to the composting mix at dry weight rates of 0% (GFC0 ), 6.25% (GFC6.25 ), 12.5% (GFC12.5 ), 25% (GFC25 ) and 50% (GFC50 ). Overall, GFC12.5 and GFC25 efficiently enhanced organic matter decomposition, reduced N loss and enriched P and K concentrations during composting, as compared to GFC0 . However, GFC6.25 did not show a significant effect on organic matter decomposition, while GFC50 had no effect on N loss. As a result, an overall enhancement of nutrient contents was observed in the final composts of GFC12.5 and GFC25 . These results suggest that the addition of GFC at moderate-rates (i.e. 12.5% and 25%) can enhance nutrient retention and thereby result in a nutrient-rich compost.