Incorporating biowaste into circular bioeconomy: A critical review of current trend and scaling up feasibility

Cheng, Sze Yin; Tan, Xuefei; Show, Pau Loke; Rambabu, K.; Banat, Fawzi; Ashokkumar, Veeramuthu; Lau, Beng Fye; Ng, Eng-Poh; Ling, Tau Chuan

doi:10.1016/j.eti.2020.101034

Cited by 66 publications

(22 citation statements)

References 118 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recycling plastics to be utilized as an energy source can be an alternative solution to overcome the current scenario, but there are some delays in executing it. Most recycling technologies are highly sensitive to purity ( Lee et al., 2019 ; Cheng et al., 2020 ). The energy from recycled plastic or recycled waste can be utilized in the future as a replacement for fossil fuels.…”

Section: Face Maskmentioning

confidence: 99%

The COVID-19 pandemic face mask waste: A blooming threat to the marine environment

et al. 2021

Self Cite

View full text Add to dashboard Cite

Section: Face Maskmentioning

confidence: 99%

The COVID-19 pandemic face mask waste: A blooming threat to the marine environment

et al. 2021

Self Cite

View full text Add to dashboard Cite

“…Moreover, the way waste is produced and distributed makes its collection and further application even less attractive. The cost of collecting and processing the waste from the point of generation to disposal proves very costly as a large workforce is required [101]. This is a significant setback in the use of lignocelluloses-based waste as raw material for industrial processes.…”

Section: Challenges Impeding the Use Of Lignocellulolytic Enzymesmentioning

confidence: 99%

“…While the use of enzymes offers a promising option for unlocking the usefulness in lignocellulosic biomass, without pre-treatment, lignin remains a barrier that makes it impossible to reach cellulose which will undergo further enzymatic action and then be converted to fermentable sugars [102]. Pre-treatment is considered by many to be the most expensive processing step throughout the conversion of lignocellulosic biomass to fermentable sugars [101]. It is a major hurdle in the adoption of lignocellulose-based processes, and Table 3 shows the five major groups of pre-treatment, citing their limitations and advantages.…”

Section: Challenges Impeding the Use Of Lignocellulolytic Enzymesmentioning

confidence: 99%

Lignocellulolytic Enzymes in Biotechnological and Industrial Processes: A Review

et al. 2020

View full text Add to dashboard Cite

Tons of anthropological activities contribute daily to the massive amount of lignocellulosic wastes produced annually. Unfortunately, their full potential usually is underutilized, and most of the biomass ends up in landfills. Lignocellulolytic enzymes are vital and central to developing an economical, environmentally friendly, and sustainable biological method for pre-treatment and degradation of lignocellulosic biomass which can lead to the release of essential end products such as enzymes, organic acids, chemicals, feed, and biofuel. Sustainable degradation of lignocellulosic biomass via hydrolysis is achievable by lignocellulolytic enzymes, which can be used in various applications, including but not limited to biofuel production, the textile industry, waste treatment, the food and drink industry, personal care industry, health and pharmaceutical industries. Nevertheless, for this to materialize, feasible steps to overcome the high cost of pre-treatment and lower operational costs such as handling, storage, and transportation of lignocellulose waste need to be deployed. Insight on lignocellulolytic enzymes and how they can be exploited industrially will help develop novel processes that will reduce cost and improve the adoption of biomass, which is more advantageous. This review focuses on lignocellulases, their use in the sustainable conversion of waste biomass to produce valued-end products, and challenges impeding their adoption.

show abstract

“…Moreover, fresh overviews devoted to the state of the art of adsorbents for CO 2 removal have been focused on biomass derived porous carbons (Singh et al, 2019;Xu and Strømme, 2019;Sher et al, 2020). However, much of the research lacks the use of biomass-derived adsorbents employed themselves as keymaterials to capture CO 2 and upgrade biogas to bio-CH 4 by adsorption-based processes (PSA), in a concept of a circulareconomy (Cheng et al, 2020;Sherwood, 2020;D'Adamo et al, 2021;Kumar and Verma, 2021). Hence, this mini-review offers a succinct summary of this topic presenting the most recent literature (2020-2021) of CO 2 uptake with biomass-derived porous carbons and the last 5 years literature of biocarbons application in PSA technology for biogas upgrading.…”

Section: Introductionmentioning

confidence: 99%

Biomass Valorization to Produce Porous Carbons: Applications in CO2 Capture and Biogas Upgrading to Biomethane—A Mini-Review

et al. 2021

View full text Add to dashboard Cite

Porous carbon materials, derived from biomass wastes and/or as by-products, are considered versatile, economical and environmentally sustainable. Recently, their high adsorption capacity has led to an increased interest in several environmental applications related to separation/purification both in liquid- and gas-phases. Specifically, their use in carbon dioxide (CO2) capture/sequestration has been a hot topic in the framework of gas adsorption applications. Cost effective biomass porous carbons with enhanced textural properties and high CO2 uptakes present themselves as attractive alternative adsorbents with potential to be used in CO2 capture/separation, apart from zeolites, commercial activated carbons and metal-organic frameworks (MOFs). The renewable and sustainable character of the precursor of these bioadsorbents must be highlighted in the context of a circular-economy and emergent renewable energy market to reach the EU climate and energy goals. This mini-review summarizes the current understandings and discussions about the development of porous carbons derived from bio-wastes, focusing their application to capture CO2 and upgrade biogas to biomethane by adsorption-based processes. Biogas is composed by 55–65 v/v% of methane (CH4) mainly in 35–45 v/v% of CO2. The biogas upgraded to bio-CH4 (97%v/v) through an adsorption process yields after proper conditioning to high quality biomethane and replaces natural gas of fossil source. The circular-economy impact of bio-CH4 production is further enhanced by the use of biomass-derived porous carbons employed in the production process.

show abstract

Incorporating biowaste into circular bioeconomy: A critical review of current trend and scaling up feasibility

Cited by 66 publications

References 118 publications

The COVID-19 pandemic face mask waste: A blooming threat to the marine environment

The COVID-19 pandemic face mask waste: A blooming threat to the marine environment

Lignocellulolytic Enzymes in Biotechnological and Industrial Processes: A Review

Biomass Valorization to Produce Porous Carbons: Applications in CO2 Capture and Biogas Upgrading to Biomethane—A Mini-Review

Contact Info

Product

Resources

About