Pyrolysis of textile dyeing sludge in fluidized bed and microwave-assisted auger reactor: Comparison and characterization of pyrolysis products

Liu, Yang; Ran, Chunmei; Siddiqui, Azka Rizwana; Xiao, Mao; Kang, Qinhao; Fu, Jie; Deng, Zeyu; Song, Yongmeng; Jiang, Zhuangde; Zhang, Tianhao; Dai, Jianjun

doi:10.1016/j.jhazmat.2018.07.055

Cited by 45 publications

(20 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu et al [101] evaluated the different results achieved using MWs and classical heating in a fluidized bed auger type reactor. The authors clearly reported a decrement in carbon dioxide content in the gas recovered during MAP.…”

Section: Map Of Woody Biomassmentioning

confidence: 99%

A Review of Bio-Oil Production through Microwave-Assisted Pyrolysis

et al. 2021

View full text Add to dashboard Cite

The issue of sustainability is a growing concern and has led to many environmentally friendly chemical productions through a great intensification of the use of biomass conversion processes. Thermal conversion of biomass is one of the most attractive tools currently used, and pyrolytic treatments represent the most flexible approach to biomass conversion. In this scenario, microwave-assisted pyrolysis could be a solid choice for the production of multi-chemical mixtures known as bio-oils. Bio-oils could represent a promising new source of high-value species ranging from bioactive chemicals to green solvents. In this review, we have summarized the most recent developments regarding bio-oil production through microwave-induced pyrolytic degradation of biomasses.

show abstract

Section: Map Of Woody Biomassmentioning

confidence: 99%

A Review of Bio-Oil Production through Microwave-Assisted Pyrolysis

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, sewage sludge can do harm to the environment as it contains undesirable components, such as various toxic organic compounds, pathogens and heavy metals (Laurent et al 2011;Zhang et al 2014;Ali et al 2018). Among them, heavy metals are non-degradable, persistent and bio-accumulative, which restrict the use of sewage sludge as fertilizer or soil regenerator (Dong et al 2013;Liu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Migration and transformation of heavy metals during the microwave-assisted thermal hydrolysis of sewage sludge

Qiu

Zheng

Wang

et al. 2021

Water Science and Technology

View full text Add to dashboard Cite

The migration, transformation and ecological risk of heavy metals (Cr, As, Ni, Cu, Zn, Cd and Pb) in the sewage sludge during the microwave-assisted thermal hydrolysis process were investigated under different temperatures (80 °C, 100 °C, 120 °C, 140 °C, and 160 °C). The potential relationship between the bio-availability of heavy metals and the variables of microwave treatment, including pH, ammonium-nitrogen, soluble chemical oxygen demand, pH, soluble protein, soluble polysaccharide and volatile solid, was also explored. The results showed that the migration of heavy metals between solid-liquid phase mainly depended on the temperature. The percentage of all heavy metals (except Cu) in mobile (acid-soluble/exchangeable and reducible) forms decreased after microwave-assisted thermal hydrolysis treatment. The solubilization of compounds with C = O and O-H accompanied with the generation of organic and inorganic metal halides were also observed in the treated sludge through fourier transform infrared spectroscopy analysis. NH4+-N showed the highest negative correlation to the bio-availability of most heavy metals (except Cu and Cr) with coefficients (absolute value) over 0.87 (P < 0.05). VS showed a positive correlation to the bio-availability of most heavy metals (except Cu). The total potential ecological risk index (RI) decreased by 46.65% after microwave treatment at 160 °C.

show abstract

“…The results of such efforts has indicated that sewage sludge can be used as an alternative energy source and that its biochar can be applied for pollution adsorption . Microwave‐assisted pyrolysis has been shown to achieve high yields of condensate products and char and lower yields of non‐condensable gas compared to fluidized bed pyrolysis processes …”

Section: Introductionmentioning

confidence: 99%

“…11 Microwave-assisted pyrolysis has been shown to achieve high yields of condensate products and char and lower yields of non-condensable gas compared to fluidized bed pyrolysis processes. 12 In this study, two biosludge cakes were selected from petrochemical industry and chemical industry wastewater treatment plants. Microwave pyrolysis was conducted to treat the sludge in order to produce liquid oil and sludge residues.…”

Section: Introductionmentioning

confidence: 99%

Microwave pyrolysis of sludge for potential use as land application and biofuel

Lin

Zeng

Chiang

2019

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

BACKGROUND A microwave pyrolysis was conducted to treat two sludge cakes for the production of liquid oil and sludge residues. The application of pyrolysis technology, the safety of land disposal of pyrolysis residue, and the quality of the derived biofuel were evaluated. RESULTS Results indicated that the total pore volume increased with increases in the mesopore size range in the case of both sludge residues after increasing the pyrolysis temperature. Low carbon, hydrogen, and sulfur content and high nitrogen content were observed in the oil derived from the chemical industry sludge. As a result, the pyrolysis liquid chemical sludge oils had heat values of 9600 to 9700 kcal kg−1 at 673–1073 K, which was slightly lower than the 9800–10 000 kcal kg−1 found for the petrochemical sludge. CONCLUSION After pyrolysis, the amount of 16 polyaromatic hydrocarbons (PAHs) in the residue and oil were significantly reduced in both the chemical sludge and petrochemical sludge at 673–1073 K. The high pyrolysis liquid oil heat values for both types of sludge indicated their potential for use as a biofuel to produce energy. The 16 PAH content in the pyrolysis residues was higher than the European standard of 6 mg kg−1, and they were thus not acceptable for soil and agricultural applications. However, as reported in the literature, using a pyrolysis temperature above 1073 K may further reduce the PAH content of the pyrolysis residue to meet regulatory standards. © 2019 Society of Chemical Industry

show abstract

Pyrolysis of textile dyeing sludge in fluidized bed and microwave-assisted auger reactor: Comparison and characterization of pyrolysis products

Cited by 45 publications

References 53 publications

A Review of Bio-Oil Production through Microwave-Assisted Pyrolysis

A Review of Bio-Oil Production through Microwave-Assisted Pyrolysis

Migration and transformation of heavy metals during the microwave-assisted thermal hydrolysis of sewage sludge

Microwave pyrolysis of sludge for potential use as land application and biofuel

Contact Info

Product

Resources

About