Management strategies for anaerobic digestate of organic fraction of municipal solid waste: Current status and future prospects

Logan, Mohanakrishnan; Visvanathan, Chettiyappan

doi:10.1177/0734242x18816793

Cited by 217 publications

(108 citation statements)

References 39 publications

Supporting

Mentioning

106

Contrasting

Unclassified

Order By: Relevance

“…The volume of liquid digestate from dry AD is much lower than from the wet one, while the nutrients (mainly nitrogen and phosphorus) in the liquid digestate can be further recovered by various biorefinery technologies [85][86][87][88][89][90]. Solid digestate can be used as compost which provides the same value as organic conditioners in land amendment application [91][92][93], lessening the dependence on chemical fertilizers, enhancing soil moisture retention and reducing irrigation requirements [94][95][96][97][98]. Various technologies commonly known as digestate processing exist to refine the digestate quality for subsequent use in agricultural purposes in regard to carbon, nitrogen, phosphorus and some trace elements.…”

Section: Anaerobic Digestionmentioning

confidence: 99%

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

Tsui

Wong

2019

Waste Dispos. Sustain. Energy

143

View full text Add to dashboard Cite

Municipal solid waste (MSW) management has emerged as probably the most pressing issue many governments nowadays are facing. Traditionally, Waste-to-Energy(WtE) is mostly associated with incineration, but now, with the emergence of the bioeconomy, it embraces a broader definition comprising any processing technique that can generate electricity/heat or produce a waste-derived fuel. Under the ambit of the circular economy many nations are looking for, additional effort must be made to be sure of acquiring the most updated information and paving a sustainable path for managing MSW in such a frame. In this regard, we have undertaken a critical review of various technologies, with their updated progress, involved in the exploitation of MSW as a renewable resource, along with the critical advantages and limitations on energy and material cycling for sustainable MSW management. Incineration, the most widely used method, is nowadays difficult to further apply due to its dubious reputation and social opposition. Meanwhile, to address the organic fraction of MSW which currently is mostly unrecycled and causes disposal issues, the biological approach presents an attractive option. The new emphasis of bioeconomy leads us to understand how environmental biotechnologies should be better connected/integrated for more sustainable MSW management. This article is concluded with advances of future prospects, which can serve as a timely reminder to encourage competent authorities/researchers to work towards further improvement of the present MSW management system.

show abstract

Section: Anaerobic Digestionmentioning

confidence: 99%

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

Tsui

Wong

2019

Waste Dispos. Sustain. Energy

143

View full text Add to dashboard Cite

show abstract

“…However, to maintain low TS content in the reactor, it requires a large amount of water if it treats wastes with high TS content, such as lignocellulosic biomass, resulting in increase in reactor volume as well as generation of a huge volume of wastewater to be treated [9]. In addition, digested slurry is subjected to solid-liquid separation process [11] after wet anaerobic digestion for further processing.…”

Section: Introductionmentioning

confidence: 99%

Dry Anaerobic Digestion for Agricultural Waste Recycling

Riya¹,

Meng²,

Wang³

et al. 2021

Biogas - Recent Advances and Integrated Approaches

View full text Add to dashboard Cite

For sustainable agriculture, it is important to manage agricultural wastes, such as crop residues and livestock wastes. Anaerobic digestion has been gathering the attention to recycle these wastes into renewable energy (biogas) and fertilizer (soil amendment) (digestate). Dry anaerobic digestion is defined as digestion at higher than 20% of total solid (TS) content in the reactor, which is suitable for wastes with high TS content, such as agricultural wastes. In this chapter, we reviewed recent advances in biogas production and use of digestate as soil amendment from dry anaerobic digestion of agricultural wastes. It has been found that ammonia concentration, feed/inoculum (F/I) ratio, and TS content are important parameters for operation of dry anaerobic digestion. Several operation technologies have been in operation, while new operation strategies have been developed. Application of solid digestate into the soil is beneficial to increase soil properties; however it should be carefully operated because it has risks of nitrate leaching and soil pathogens.

show abstract

“…However, this co-product can also be further refined through various treatments and technologies, commonly known as digestate processing, including solid-liquid separation, drying, dilution, filtration, etc. [3,4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Digestate on Soil Organic Carbon and Plant-Available Nutrient Content Compared to Cattle Slurry and Mineral Fertilization

2020

View full text Add to dashboard Cite

Digestate contains many valuable nutrients, including nitrogen (N), phosphorus (P), and potassium (K); however, it is characterized by relatively little organic matter. The objective of this study was to assess the four-year impact of digestate (Dig) application, digestate + straw (Dig + St), cattle slurry (Csl), and mineral fertilization (NPK) on soil organic carbon (SOC), total nitrogen (TN), mineral N (Nmin), and the content of plant-available P and K. Fertilization did not have any significant influence on SOC, TN, and SOC/TN parameters. Yet, in comparison with control, there was an upward trend in the concentration of SOC and TN in the topsoil, where fertilizers were applied. In contrast to SOC and TN, fertilizer treatment significantly affected the content of P, K, and Nmin, and the differences depended on the soil depth and the fertilizer used. On average, the highest content of P was obtained in Csl treatment, but the highest content of K was observed in Dig + St. The effect of treatment on Nmin in spring was as follows: NPK = control < Csl = Dig + St < Dig. Straw plowing increased the bio-immobilization of N with digestate and, at the same time, lowered the content level of nitrates in soil.

show abstract

Management strategies for anaerobic digestate of organic fraction of municipal solid waste: Current status and future prospects

Cited by 217 publications

References 39 publications

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

A critical review: emerging bioeconomy and waste-to-energy technologies for sustainable municipal solid waste management

Dry Anaerobic Digestion for Agricultural Waste Recycling

Effect of Digestate on Soil Organic Carbon and Plant-Available Nutrient Content Compared to Cattle Slurry and Mineral Fertilization

Contact Info

Product

Resources

About