Valorization of solid waste using advanced thermo-chemical process: A review

Bhatt, Mukesh; Chakinala, Anand G.; Joshi, Jyeshtharaj B.; Sharma, Anita; Pant, Kamal Kishore; Shah, Kalpit; Sharma, Abhishek

doi:10.1016/j.jece.2021.105434

Cited by 46 publications

(6 citation statements)

References 148 publications

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“…As the engineered P. putida chassis can directly co-utilise complex substrate mixtures, any hydrolysis reaction that can generate monomers that can be fed into metabolism could be incorporated. For instance, a mixture of non-biodegradable plastics was recently depolymerised by metal-catalysed autoxidation 20 , and various alternative pre-treatment methods exist for lignocellulose and plastics, such as chemical hydrolysis, chemical glycolysis or thermolysis 57,[86][87][88][89][90][91][92][93] . Further enzymatic optimisation efforts together with the discovery and engineering of novel enzymatic cocktails -especially those working under mild and mesophilic conditions, will aid the development of sustainable mixed MSW pre-treatment strategies 94 .…”

Section: Phamentioning

confidence: 99%

Complex waste stream valorisation through combined enzymatic hydrolysis and catabolic assimilation byPseudomonas putida

Gonzalez

Chacόn

Fisher

et al. 2023

Preprint

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Linear consumption models in combination with the poor waste management results in negative impact upon the climate and environment. Here we show an advanced biorefinery concept to produce biopolymers and recombinant therapeutic proteins from municipal solid waste. Careful selection and metabolic engineering of Pseudomonas putida was employed to permit efficient co-utilisation of complex, heterogenous substrate compositions derived from the most abundant municipal solid waste fractions. Enzymatic pre-treatment of the feedstock was performed, which afforded sufficient carbon for growth and bio-production of value-added products. Unlike current waste processing methods and supply of feedstocks for bio-based manufacturing, this biorefinery concept re-directs the carbon away from direct emissions and creates a land-use negative feedstock ideal for advanced biomanufacturing. We envisage this demonstration will lead to the creation of circular consumption solutions for waste and bio-production of a range of chemicals and materials in future resource finite scenarios.

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Section: Phamentioning

confidence: 99%

Complex waste stream valorisation through combined enzymatic hydrolysis and catabolic assimilation byPseudomonas putida

Gonzalez

Chacόn

Fisher

et al. 2023

Preprint

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“…30 Gasification is a second chemical recycling technology that is more flexible than pyrolysis in the valorization of feedstocks containing different types of polymers or plastics blended with other feedstocks. 31 The process of "gasification" enables the recycling of even the most complex plastic wastes into readily available gas fuel that may be employed for a variety of heating applications. 32 The capability to produce energy, chemicals (DME, fuels, and methanol), and energy carriers (such as H 2 ) from the generated syngas makes gasification attractive.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, diesel derived straight from hydrocarbon distilling has lower exhaust emissions than plastic pyrolysis oil . Gasification is a second chemical recycling technology that is more flexible than pyrolysis in the valorization of feedstocks containing different types of polymers or plastics blended with other feedstocks . The process of “gasification” enables the recycling of even the most complex plastic wastes into readily available gas fuel that may be employed for a variety of heating applications .…”

Section: Introductionmentioning

confidence: 99%

A Critical Outlook on Lignocellulosic Biomass and Plastics Co-Gasification: A Mini-Review

2022

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The generation of solid waste and lignocellulosic biomass (LCB) residues and their environmentally responsible disposal have emerged as major global challenges. A major part (around 12%) of solid waste is plastic, and the increased accumulation has become a serious public health and environmental hazard. For the combined management of residual LCB biomass and plastic waste, thermochemical conversion, particularly gasification, appears to be a potential alternative. Gasification is a process that turns high carbon-containing solid feedstocks into a combustible gas mixture known as syngas or producer gas based on the gasifying agent. Co-gasification (the gasification of two distinct feedstocks) has the potential to facilitate eco-friendly plastic waste disposal while also contributing to the production of green energy. The literature on the co-gasification of LCB and plastic waste is reviewed in the current study. These are mostly experimental studies on biomass and plastics carried out in various reactors with multiple gasifying mediums. The synergistic effects of various feedstock compositions and attributes are examined during co-gasification using experimental studies and reactor-level modeling. The impacts of operating parameters on the gas yield, tar formation, and gasifier performance are also analyzed. Finally, the challenges, research gaps, and the way toward commercialization in the context of co-gasification of various combinations of LCB and plastics are presented.

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“…Pre-treatment of waste requires several waste processing steps to achieve the required quality of the RDF. It incurs not only costs but also each activity needs energy for transportation and processing (Bhatt et al 2021). Therefore, the reverse supply chain can be analyzed in the context of energy consumption required in the collection, transportation, handling, and processing of waste (Youse oo and Babazadeh 2020; Hashemi 2021).…”

Section: Introductionmentioning

confidence: 99%

The evaluation of energy consumption in transportation and processing of municipal waste for recovery in a waste-to-energy plant: a case study of Poland

Nowakowski

Wala²

2022

Environ Sci Pollut Res

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Refuse-derived fuel (RDF) can be produced from combustible materials contained in municipal waste. After pre-treatment of waste it is possible shipping RDF a waste-to-energy plant (WtE). This article investigates energy and material ow of waste for different scenarios for production of RDF from bulky waste, separately collected waste, and mixed municipal solid waste (MSW). We compare the proportion of energy consumption in transportation, handling waste, and processing using data from the waste collection company in the South of Poland. The ndings show the components of the reverse supply chain consuming the highest value of the energy.A model of material and energy ow has taken into consideration collection of waste and transportation by two categories of waste collection vehicles light commercial vehicles and garbage trucks. The shipping of RDF from pre-treatment facility uses -tipper semi-trailers and walking oor trailers.The ndings of the study show production of RDF from municipal solid waste is consuming almost 10% of energy potential in RDF. Less energy is required for the production of RDF from bulky waste 2.2% -4.8% or separately collected waste 1.7% -4.1% depending on the e ciency of collection and selected vehicles. The transportation is consuming greatest portion of energy. For mixed municipal solid waste (MSW) it can reach 79%, for separated collection waste 90% and for bulky waste up to 92% of the total energy consumed. Comparing emissions for two categories of the collection vehicles there is no signi cant difference for the bulky waste collections. For mixed MSW and separately collected waste the emissions are higher for garbage trucks. As a recommendation for practitioners is optimization of routing to achieve higher collection rate for minimized route length. Transportation of RDF to WtE plant the vehicles with higher loading capacity are essential.

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Valorization of solid waste using advanced thermo-chemical process: A review

Cited by 46 publications

References 148 publications

Complex waste stream valorisation through combined enzymatic hydrolysis and catabolic assimilation byPseudomonas putida

Complex waste stream valorisation through combined enzymatic hydrolysis and catabolic assimilation byPseudomonas putida

A Critical Outlook on Lignocellulosic Biomass and Plastics Co-Gasification: A Mini-Review

The evaluation of energy consumption in transportation and processing of municipal waste for recovery in a waste-to-energy plant: a case study of Poland

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