Converting digested residue eluted from dry anaerobic digestion of distilled grain waste into value-added fertilizer by aerobic composting

Wang, Ting Ting; Wang, Shi-Peng; Zhong, Xiao-Zhong; Sun, Zhao Yong; Huang, Yu-Lian; Li, Tan; Tang, Yue‐Qin; Kida, Kenji

doi:10.1016/j.jclepro.2017.08.075

Cited by 55 publications

(17 citation statements)

References 30 publications

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“…In addition, Jin et al (2016) studied aerobic digestion of sewage sludge under psychrophilic, mesophilic, and thermophilic temperatures. They observed a significant improvement in COD T removal with temperature increase, leading to high quality effluent that is satisfactory for land applicationwith sterilization being the only post-treatment requirement (Wang et al 2017). Similarly, in this study, upon raising the temperature of the aerobic digester to the mesophilic range, COD T dropped to below 10,000 mg L −1 , considered as a threshold to limit the impact of the land applied effluent on groundwater quality (Risse et al 2006).…”

Section: Effluent Qualitysupporting

confidence: 59%

Anaerobic-aerobic sequential treatment: Temperature optimization and cost implications

Ghanimeh

Khalil

Angelucci

et al. 2019

Journal of the Air & Waste Management Association

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Traditionally, aeration units, used as a polishing stage after anaerobic digestion (AD) of wastes, are operated at ambient temperature. Yet, when effluent quality is the main design criterion, raising the temperature of the aeration stage can be justified by improved removal efficiencies. In this study, an anaerobic-aerobic sequential system (AASS) was operated to co-digest raw wastewater and food waste. The aerobic compartment was tested under psychrophilic and mesophilic temperatures. At the design loading rate of 2 g VS L −1 d −1 , the anaerobic digester achieved removal efficiencies of 85 ± 2% of volatile solids (VS), 84 ± 3% of total chemical oxygen demand (COD T ) and a biogas yield of 1,035 ± 30 mL g VSfed −1 (50% methane). The aerobic reactor achieved additional removal of 8% COD T and 7 % VS. By raising the temperature of the aerobic reactor to the mesophilic range, COD and solids concentrations of the effluent dropped to approximately half their values. This was accompanied by an increase in nitrification (from 68% to 91%) and denitrification (from 10% to 16%). The energy analysis showed that total energy consumption slightly increases (from 0.45 to 0.49 kWh kg CODfed −1) by raising the temperature of the aerobic reactor to mesophilic range. A preliminary evaluation of the sludge disposal cost, revealed a saving increase of 5-6% under mesophilic operation with respect to psychrophilic conditions.Implications: In order to cope with the globally increasing constraints on the disposal of urban wastes, efficient post-processing of effluents becomes a crucial requirement for the anaerobic digestion industry. In this context, the submitted manuscript shows that the quality of the effluent, of an anaerobic digester, treating food waste with raw wastewater, can be substantially improved by optimizing the aerobic polishing stage. Raising the temperature of the aerobic reactor to the mesophilic range resulted in a drop of solids and COD concentrations to approximately half their values. Equally important, the implications on operational costs were found to be favorable, compared to traditional psychrophilic aerobic post-treatment, when taking into consideration indirect sludge treatment costs and energy selling revenues.

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Section: Effluent Qualitysupporting

confidence: 59%

Anaerobic-aerobic sequential treatment: Temperature optimization and cost implications

Ghanimeh

Khalil

Angelucci

et al. 2019

Journal of the Air & Waste Management Association

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“…BSGs have resulted in a good feedstock for anaerobic digestion processes. While the usual way to dispose of both brewers' and distillers' spent grains is to use them as feed for livestock [29,30] (with the limitations for DSGs of copper toxicity, especially for ovine and caprine livestock) or even for human consumption [31], a lot of interest has arisen lately for their use in biogas production [32,33], with a good final biomethane production and, as a by-product, a digestate with a good volumetric reduction and which could still be useful in agriculture as a fertilizer or as an organic amendment for soils [34]. This fact has lead to the appearance of several studies and works focused on its use.…”

Section: Discussionmentioning

confidence: 99%

Energetic Valorization of Solid Wastes from the Alcoholic Beverage Production Industry: Distilled Gin Spent Botanicals and Brewers’ Spent Grains

Montes

Rico

2021

Applied Sciences

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In this paper, the authors assess the possibilities of energetic valorization for two solid wastes from alcoholic beverage production. Distilled gin spent botanicals (DGSB) and brewers’ spent grains (BSG) are tested, both by themselves and as co-substrates, for their possibilities as substrates for anaerobic digestion in a system of box-type digesters, suited for the process. While BSGs show a good performance for anaerobic digestion, DGSBs, despite showing an acceptable biomethanogenic potential result as not suitable for the process. Experiments using DGSBs as substrate in the reactors result in failure. And, as a co-substrate, the biomethanogenic digestion process appears to be hampered and lagged. Possible explanations for this behavior are explored, as well as other possibilities for the use of the material as a power source given its high heating value.

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“…Operating condition of digester and characteristics of substrates was reported to be responsible for total moisture in the digestate. A total water content of 3. to 110% from 60% which increases its suitability as fertilizer and soil conditioner [117].…”

Section: Digestate Managementmentioning

confidence: 99%

“…It shows that design of the SSAD system and the operating condition for the digestate management is of sheer importance for further applications. In a reported study, Wang et al, also advocates that operating condition (here temperature) of SSAD will help to make the digestate pathogen free Wang et al, (2017). took digestate from a SSAD plant running on distiller's grain waste and provided aerobic treatment for value added products.…”

mentioning

confidence: 99%

Solid state anaerobic digestion of water poor feedstock for methane yield: an overview of process characteristics and challenges

Paritosh

Kumar

Pareek

et al. 2021

Waste Dispos. Sustain. Energy

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Solid state anaerobic digestion (SSAD) of water poor feedstock may be a promising technology for energy recovery. Feedstocks having high solid concentration like lignocellulosic biomass, crop residues, forestry waste and organic fraction of municipal waste may be the appropriate feedstock for its biochemical conversion into energy carries like biomethane through SSAD.Compared to liquid state anaerobic digestion (LSAD), SSAD can handle higher organic loading rates (OLR), requires a less water and smaller reactor volume, may have lower energy demand for heating or stirring and higher volumetric methane productivity. Besides these, pathogen inactivation may also be achieved in SSAD of biodegradable waste. Around 60% of recently built AD systems have adopted SSAD technology. However, the process stability of an SSAD system may have several constraints like limited mass transfer, process inhibitors and selection of digester type and should be addressed prior to the implementation of SSAD technology. In this article, a comprehensive overview of the key aspects influencing the performance of SSAD

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Converting digested residue eluted from dry anaerobic digestion of distilled grain waste into value-added fertilizer by aerobic composting

Cited by 55 publications

References 30 publications

Anaerobic-aerobic sequential treatment: Temperature optimization and cost implications

Anaerobic-aerobic sequential treatment: Temperature optimization and cost implications

Energetic Valorization of Solid Wastes from the Alcoholic Beverage Production Industry: Distilled Gin Spent Botanicals and Brewers’ Spent Grains

Solid state anaerobic digestion of water poor feedstock for methane yield: an overview of process characteristics and challenges

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