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4 A schematic diagram of the process concept of the batch system with external methanogenesis of GICON. M. Qian, R. Li, J. Li, H. Wedwitschka, M. Nelles, W. Stinner, et al., Industrial scale garage-type dry fermentation of municipal solid waste to biogas, Bioresour. Technol. 217 (2016) 82À89.
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The depletion of nonrenewable energy sources drives the exploration for renewable energy sources as an alternation route of energy generation. Hence, in the past decade, research efforts have been employed to explore potential renewable energy sources utilizing waste biomass. Anaerobic digestion (AD) is considered as an efficient technique to treat...
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One of the anaerobic digestion process products in an agricultural biogas plant is digestate (digested pulp). Large quantities of digestate generated in the process of biogas production all over the world require proper management. Fertilization is the main management of this substrate, so it is essential to look for new alternatives. The work aims...
Citations
... Designing of a suitable reactor is necessary to enhance the performance of dry anaerobic digestion processes through which maximum amount of substrate will be digested. As digestate of SSAF contains low moisture, it can be used as the fertilizer which is much easier to handle than the effluent generated from liquid-state anaerobic fermentation (Yousuf et al. 2020). ...
Press mud cake (PMC) is one of the world’s most abundant sugarcane-based wastes, and in an Indian context, 8–10 million tonnes per annum is produced. The current use of PMC is restricted to use as filler material in bio-composting process or directly as fertilizer to improve soil fertility without any previous recovery of value-added products. However, considering its potential, only fertilizer use is not the best valorization route. Due to lack of transportation, press mud is unused and left in piles in most sugar mills, leading to blockage of drains and becoming a cause of water pollution. At the same time, increasing consumption of fossil fuels and environmental concern has led to increased use of compressed natural gas (CNG) in the transportation sector. Keeping in view limited resources of CNG, biogas is advised as potential fuel to provide continuous supply of CNG in the form of bio-CNG or Compressed Biogas (CBG). Therefore, to decrease the imports of crude oil and natural gas requirement and to increase the economic sustainability of sugar mills, utilization of wastes (spent wash and PMC)for biogas production through anaerobic digestion (AD) and further purification to produce CBG (a purified form of Biogas) will definitely generate additional revenue for sugar mills in India. This paper aims to produce a strong outlook on the importance of CBG production through anaerobic digestion and its purification. Further, an out sketch of five models has been designed showing the possibility to produce maximum CBG using existing biogas plant (sugar mill complex) with addition of a new biogas plant. Production of value-added CBG and recycle of digestate on organic fertilizer are perfect case of bio-circular economy.
