Co-pyrolysis between microalgae and textile dyeing sludge by TG–FTIR: Kinetics and products

Peng, Xiaowei; Ma, Xiaoqian; Lin, Yousheng; Guo, Zhenge; Hu, Shengmin; Ning, Xingxing; Cao, Yawen; Zhang, Yaowei

doi:10.1016/j.enconman.2015.05.025

Cited by 202 publications

(32 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The complete absence of oxygen required during the pyrolysis process was ensured by supplying the furnace with a constant nitrogen flowrate of 60 mL/min. The constant heating rates selected to increase the temperature during pyrolysis were10,13,16,19,22,25,30,35, and 40 K/min. According to Soria-Verdugo et al[84], the use of nine different TGA pyrolysis curves, obtained at nine different heating rates, provides accurate values for the kinetic parameters of the pyrolysis process, i.e., the activation energy E and the pre-exponential factor A.…”

mentioning

confidence: 99%

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

et al. 2018

View full text Add to dashboard Cite

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model, Algal Research 32 (2018) 11-29. AbstractThe pyrolysis kinetics of the microalgae Chlorella Vulgaris (CV), Isochrysis Galbana (IG), Nannochloropsis Gaditana (NG), Nannochloropsis Limnetica (NL), Phaeodactylum Tricornutum (PT), and Spirulina Platensis (SP) were studied by non-isothermal thermogravimetric analysis conducted at nine different constant heating rates. The kinetic parameters of each microalgae species were calculated using several kinetic methods, such as those of Kissinger, Friedman, Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), Vyazovkin, and the simplified Distributed Activation Energy Model (DAEM). The results show that the kinetic parameters calculated from the integral isoconversional methods OFW, KAS and Vyazovkin are similar to those determined by applying the simplified DAEM. In contrast, application of the differential isoconversional method of Friedman led to moderate deviations in the activation energies and pre-exponential factors computed, whereas the unique values of the kinetic parameters determined by the Kissinger method resulted in the highest deviations.

show abstract

mentioning

confidence: 99%

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The maximum release rate for CH 4 was located at about 450 C. Previous research found that the degradation of long-chain fatty acids at lipid fraction was the major source of CH 4 [48]. Additionally, the pyrolysis of heterocyclic aromatic compounds, such as indoles, pyrroles and pyridines also lead to CeH stretch.…”

Section: Evolving Characteristics Of Typical Gaseous Productsmentioning

confidence: 92%

Thermal cracking behavior, products distribution and char/steam gasification kinetics of seawater Spirulina by TG-FTIR and Py-GC/MS

2020

View full text Add to dashboard Cite

In this study, fast pyrolysis of seawater Spirulina, is carried out to evaluate the potential of deriving valuable chemicals and fuel molecules from this seawater algae variety. The devolatilization behavior and gaseous product evolution of seawater Spirulina were carried out by TG-FTIR. Py-GC-MS was employed to investigate the composition and distribution of volatile products formed from the seawater Spirulina through high-temperature fast pyrolysis process. Finally, the seawater Spirulina char gasification reactivity and kinetic parameters were evaluated using advanced methods of volume, shrinking core and random pore. Results indicate that the thermal cracking process of seawater Spirulina mainly consisted of three reaction stages, including dehydration and drying stage, fast pyrolysis stage and residues slow decomposition stage. High heating rate has significant effect on the performance of devolatilization profiles. H 2 O, CH 4 , CO 2 , HNCO, NH 3 , HCN, CO, CeO bond and C]O bond were the typical gaseous products released from the fast pyrolysis stage of seawater Spirulina. The maximum release rate of seawater Spirulina for CH 4 was located at about 450 C, corresponding to the main pyrolysis of long-chain fatty acids from lipid fraction. The high temperature fast pyrolysis of seawater Spirulina resulted in aliphatic (alkanes, alkenes) and aromatic hydrocarbons, esters, oxygenates (carboxylic acids, aldehydes, ketones, and alcohols), phenolics, and nitrogen-and sulfur-containing organic compounds. Above 750 C was considered as the optimum temperature, which can reduce the generation of oxygenated compounds, and the content of nitrogen and phenolic compounds were decreased, maximum yield of quantified hydrocarbons was observed. The increase of gasification temperature can obviously improve the gasification reactivity of seawater Spirulina chars. The activation energies of the VM, SCM and RPM models of seawater Spirulina chars were 187.95, 173.14 and 154.34 kJ/mol, respectively. RPM displays a significant fitness with the experimental data than those of the other two models.

show abstract

“…In principle, energy policy promotes the use of biomass and locally generated waste as fuel to support the carbon economy (Otero et al, 2007). Previous researchers (Peng et al, 2015a) found a synergistic interaction between microalgae and TDS in co-combustion, which could avoid the drawbacks of each fuel and improve their combustion performance. The co-combustion of TDS with coal, under appropriate control, may be a secure method, and it may also generate profits through energy recovery.…”

Section: Introductionmentioning

confidence: 99%

“…Because of the limited knowledge of the combustion and pyrolysis characteristics of TDS, the objective of this work was to experimentally quantify the impact of different atmospheres (N 2 /O 2 ,C O 2 /O 2 , and N 2 /CO 2 ) for TDS. Although the cocombustion and co-pyrolysis of TDS with microalgae has been studied to some extent (Peng et al, 2015a;Peng et al, 2015b), coal will still make a great contribution to China's economic growth in the long term. Thus, it is necessary to study the combustion characteristics of the blends of TDS and coal under different sludge weight percentages, after which the kinetics parameters were calculated to give an appraisal of the cocombustion of coal with TDS.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Zhuo

Liu

Sun

et al. 2018

Water Environment Research

View full text Add to dashboard Cite

The combustion characteristics of textile dyeing sludge (TDS) in N2/O2, CO2/O2, and N2/CO2 atmospheres, and blends of TDS with coal were analyzed using TGA (thermogravimetric analysis). Results showed that the replacement of N2 by CO2 resulted in negative effects on the combustion and pyrolysis of TDS. Comparing N2/O2 and CO2/O2 atmospheres, combustion of TDS was easier in a N2/O2 atmosphere, but the residual mass after TDS pyrolysis in pure CO2 was less than that in N2 by approximately 4.51%. When the proportion of TDS was 30-50% in the blends of coal with TDS, a synergistic interaction clearly occurred, and it significantly promoted combustion. In considering different combustion parameters, the optimal proportion of TDS may be between 20-30%. The activation energy Ea value decreased from 155.6 kJ/mol to 53.35 kJ/mol with an increasing TDS proportion from 0% to 50%, and it rapidly decreased when the TDS proportion was below 20%.

show abstract

Co-pyrolysis between microalgae and textile dyeing sludge by TG–FTIR: Kinetics and products

Cited by 202 publications

References 38 publications

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

Thermal cracking behavior, products distribution and char/steam gasification kinetics of seawater Spirulina by TG-FTIR and Py-GC/MS

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal

Contact Info

Product

Resources

About

Co-pyrolysis between microalgae and textile dyeing sludge by TG–FTIR: Kinetics and products

Cited by 202 publications

References 38 publications

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

Analyzing the pyrolysis kinetics of several microalgae species by various differential and integral isoconversional kinetic methods and the Distributed Activation Energy Model

Thermal cracking behavior, products distribution and char/steam gasification kinetics of seawater Spirulina by TG-FTIR and Py-GC/MS

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N2/CO2/O2 Atmospheres and its Combustion Model with Coal

Contact Info

Product

Resources

About

Thermogravimetric Analysis of Textile Dyeing Sludge (TDS) in N₂/CO₂/O₂ Atmospheres and its Combustion Model with Coal