Microwave-assisted pyrolysis of agricultural residues: current scenario, challenges, and future direction

Fodah, Ahmed Elsayed Mahmoud; Ghosal, M. K.; Behera, D.

doi:10.1007/s13762-020-03099-9

Cited by 35 publications

(12 citation statements)

References 143 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, there is a lack of long-term field studies demonstrating the effectiveness of biochar for controlling soil erosion. The quality of biochar produced from MAP is likely to be better (than conventional pyrolysis) in the basic characteristics such as surface area, porosity and carbon content [83,155,156]. Guo et al (2019) [157] observed that the MAP produced biochar, due to its environmental stability, high water and nutrient retention properties, is an excellent soil conditioner for increasing vegetation and improving soil properties [156].…”

Section: Future Scopementioning

confidence: 99%

“…The quality of biochar produced from MAP is likely to be better (than conventional pyrolysis) in the basic characteristics such as surface area, porosity and carbon content [83,155,156]. Guo et al (2019) [157] observed that the MAP produced biochar, due to its environmental stability, high water and nutrient retention properties, is an excellent soil conditioner for increasing vegetation and improving soil properties [156]. Alam et al (2020) [158], while enumerating the various benefits of using biochar, also pointed out that biochar helps mitigate drought conditions due to its high WHC.…”

Section: Future Scopementioning

confidence: 99%

See 1 more Smart Citation

Reviewing role of biochar in controlling soil erosion and considering future aspect of production using microwave pyrolysis process for the same

Wani

Narde

Huang

et al. 2021

Biomass Conv. Bioref.

View full text Add to dashboard Cite

Microwave-assisted pyrolysis (MAP) is considered as one of the improved biochar production options given its cost efficiency, efficient heat transfer and better-quality control. Researchers have observed that biochar can be considered as an alternative erosion control material due to its high porosity, surface area, and surface functional groups. However, as per the available literature, contradictions exist regarding some erosion control mechanisms of biochar with respect to water holding capacity (WHC), bulk density, and aggregate formation. Further, there is a lack of exploration as to how biochar produced using MAP can be adopted for erosion control. The objective of this study is to critically review existing literature on the usage of biochar for erosion control in various types of soils. In addition, the use of the MAP technique for producing biochar for erosion control is explored. Based on the review, the available experimentation research is generally of short duration with the least consideration of the long-term ageing effects of biochar. The studies on erosion control using biochar have been mostly conducted in the shallower zone (i.e., within 20 cm). The effect of different types of biochars on various soils does not seem to have been investigated systematically. It has been observed that the mechanism of washing away biochar particles and nutrients is rarely taken into account while measuring erosion. Further, the comparative analysis of biochar types produced from various feedstocks, including their physiochemical properties, is rarely explored for their applications in soil erosion. This study aims to critically analyze available literature for the erosion suppressing mechanism of biochar, limitations and the feasibility of microwave-assisted biochar production for the purpose of soil erosion control.

show abstract

Section: Future Scopementioning

confidence: 99%

Section: Future Scopementioning

confidence: 99%

Reviewing role of biochar in controlling soil erosion and considering future aspect of production using microwave pyrolysis process for the same

Wani

Narde

Huang

et al. 2021

Biomass Conv. Bioref.

View full text Add to dashboard Cite

show abstract

“…Technologies has been introduced into the drying process, including hot air drying, contact drying, infrared drying, and microwave drying. Especially microwave energy, which is used in many fields such as agriculture [6], medicine [7], and is widely used to dry the various materials. In the past, microwave energy was mainly used for drying food, fruit, agricultural products and engineering materials [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The forming biomass energy rod from the leaf sheath of sugarcane during drying process using microwave energy

Keangin

Charoenlerdchanya²

2023

E3S Web of Conf.

View full text Add to dashboard Cite

The leaf sheath of sugarcane are agricultural residues. In the past, the agriculturists used to burn leaf sheath of sugarcane which caused pollution. This research aims to develop the management process of leaf sheath of sugarcane and to reduce the burning of sugarcane. In addition, to eliminate the leaf sheath of sugarcane to effectively utilize suitable for agriculture and agro-industry as well as to add value to the leaf sheath of sugarcane. This research has developed biomass energy rod from the leaf sheath of sugarcane using natural rubber as binder during drying process by microwave energy. The ingredients for forming biomass energy rod using the designed machine are sugarcane leaves of 19 %w/w, water of 57 %w/w, tapioca flour of 6 %w/w and natural latex of 19 %w/w. The biomass energy rod has diameter of 5 cm, length of 10 cm, and weighs between 150-153 g is required. The effects of heat source namely microwave drying, hot air drying and microwave-hot air drying is studied. The drying time, net heating value and residual moisture content of biomass energy rod are compared with each drying heat source. The results showed that in case study 2 using microwave energy (8 microwave sources are turned on, 250 W each) in the drying process has the lowest drying time, highest net heating value and has the lowest residual moisture content of biomass energy rod when compared to each drying heat source. The results of this research help to develop innovations in the forming and drying process of biomass energy rod using agricultural products such as leaf sheath of sugarcane.

show abstract

“…The typical temperature range for hydrothermal carbonization is 150–300 °C [ 13 ]. Many different ways of technical realizations exist for all of the processes mentioned above, including the use of microwave [ 14 , 15 ] and solar heating [ 16 ]. Some of the processes are optimized for the production of liquid and gaseous fuels with biochar as a by-product [ 17 ], others are optimized for producing designed chars.…”

Section: Introductionmentioning

confidence: 99%

Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

Ilić

Haegel²,

Lolić³

et al. 2022

PLoS ONE

View full text Add to dashboard Cite

The knowledge of the structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness test for the analytical methods used in this study. Specific problems connected with the pretreatment of samples and drawbacks of some methods for some types of chars could be identified in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main elements, including that of oxygen, and of inorganic components for adequate results. The combination of X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy allows a rough characterization of surface functional groups, but cannot discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spectroscopy did not well correlate with the amount of sp2 hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in conjunction with extensive analytical characterization.

show abstract

Microwave-assisted pyrolysis of agricultural residues: current scenario, challenges, and future direction

Cited by 35 publications

References 143 publications

Reviewing role of biochar in controlling soil erosion and considering future aspect of production using microwave pyrolysis process for the same

Reviewing role of biochar in controlling soil erosion and considering future aspect of production using microwave pyrolysis process for the same

The forming biomass energy rod from the leaf sheath of sugarcane during drying process using microwave energy

Surface functional groups and degree of carbonization of selected chars from different processes and feedstock

Contact Info

Product

Resources

About