Dry Co-Digestion of Poultry Manure with Agriculture Wastes

Abstract

This study tested the effect on thermophilic and mesophilic digestion of poultry manure (PM) or treated poultry manure (TPM) by the addition of agriculture wastes (AWS) as a co-substrate under dry conditions. PM was co-digested with a mixture of AWS consisting of coconut waste, cassava waste, and coffee grounds. Results were increased methane content in biogas, with decreased ammonia accumulation and volatile acids. The highest performance occurred under mesophilic conditions, with a 63 and 41.3 % increase in methane production from addition of AWS to TPM (562 vs. 344 mL g VS(-1) from control) and PM (406 vs. 287 mL g VS(-1) from control), respectively. Thermophilic conditions showed lower performance than mesophilic conditions. Addition of AWS increased methane production by 150 and 69.6 % from PM (323.4 vs. 129 mL g VS(-1) from control) and TPM (297.6 vs. 175.5 mL g VS(-1) from control), respectively. In all experiments, 100 % acetate produced was degraded to methane. Maximum ammonia accumulation was lowered to 43.7 % by mixing of AWS (range 5.35-8.55 vs. 7.81-12.28 g N kg(-1) bed). The pH was held at 7.3-8.8, a range suitable for methanogenesis.

Enhanced Biogas Production of Cassava Wastewater Using Zeolite and Biochar Additives and Manure Co-Digestion

“…The observed increase in CH 4 production with co-digestion of CW within the first two weeks was consistent with other findings, which emphasized the advantages of co-digestion over single digestion of substrates [2,32,[35][36][37]. Panichnumsin et al [2] examined the potential of co-digestion of cassava pulp and swine manure in a semi-continually fed stirred tank reactor in mesophilic conditions (37 • C) at a constant organic loading rate of 3.5 kg VS/m 3 d for 15 days and reported a 41% increase in CH 4 yield compared with digestion of swine manure alone.…”

Evaluating the co-digestion effects on chicken manure and rotten potatoes in batch experiments

“…The results of VFAs and biogas analysis of co-digestion are encouraging for not only improving biogas production but also stabilizing the digestion system. VFAs analysis showed acetate accumulation as a major component of the media with other components it consumed (Acetate 100% degradation) as cited in other finding (Abouelenien et al, 2016…”

“…This study enhanced the concept of CM using as favorite co-substrate due to its buffering capacity so it helps in maintaining the pH which are decreased due to temporary VFAs accumulation (Abouelenien et al, 2016). Each BMP of substrates has compared with BMP values ( (Gou et al, 2014), headspace volume of flasks (Zhang Cunsheng et al, 2014) and finally S/I ratio (Abouelenien et al, 2016).…”

The Reaserch of Dry Chicken MANURE Methanogenesis Stability

“…Production of methane in thermophilic conditions in this study was higher than in our previous study, which is associated with a longer period of the process. The highest methane production rates were obtained by Abouelenien et al Thus, in their study the production of methane of chicken manure with 20 % of dry matter content at 55 °C was 139.6 ml/g TS [3].…”