Pyrolytic characteristics of sweet potato vine

Wang, Tipeng; Dong, Xiaochen; Jin, Zaixing; Su, Wenjing; Ye, Xiaoning; Chen, Dong; Lü, Qiang

doi:10.1016/j.biortech.2015.05.018

Cited by 15 publications

(3 citation statements)

References 17 publications

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“…Gaseous product yields increased as the temperature increased from 350 • C to 450 • C, while liquid product yields increased from 450 • C to 550 • C and peaked at 550 • C. The highest yields of liquid products were 42.33% and 46.92% for RMS and AMS, respectively. During pyrolysis at low temperatures, the unstable chemical bonds of biomass break quickly and primarily produce non-condensable gases, while the ring cracking reactions in lignin and char were much stronger at higher temperatures and a large amount of tar are generated [50]. More surface folds and structural cracking were observed in SEM images from high-temperature pyrolysis (Figure 4).…”

Section: Distribution Of Pyrolysis Productsmentioning

confidence: 99%

Nitrogen Migration during Pyrolysis of Raw and Acid Leached Maize Straw

Mou

Zou

et al. 2021

Sustainability

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Solid biofuel is considered as a possible substitute for coal in household heat production because of the available and sustainable raw materials, while NOx emissions from its combustion have become a serious problem. Nitrogen-containing compounds in pyrolysis products have important effects on the conversion of fuel-N into NOx-N. Understanding these converting pathways is important for the environmentally friendly use of biomass fuels. The nitrogen migration during pyrolysis of raw and acid leached maize straw at various temperatures was investigated in this study. Thermal gravimetric analysis and X-ray photoelectron spectroscopy were used to investigate the performances of thermal decomposition and pyrolysis products from samples. The main nitrogen functional groups in biomass and biochar products were N-A (amine-N/amide-N/protein-N), pyridine-N, and pyrrole-N, according to the findings. The most common gaseous NOx precursor was NH3, which was produced primarily during the conversion of N-A to pyridine-N and pyrrole-N. The formation of HCN mainly came from the secondary decomposition of heterocyclic-N at high temperatures. Before the pyrolysis temperature increased to 650 °C, more than half of the fuel-N was stored in the biochar. At the same pyrolysis temperature, acid-leached maize straw yielded more gas-N and char-N than the raw biomass. The highest char-N yield of 76.39 wt% was obtained from acid-leached maize straw (AMS) pyrolysis at 350 °C. Low pyrolysis temperature and acid-leaching treatment can help to decrease nitrogen release from stable char structure, providing support for reducing nitrogenous pollutant emissions from straw fuel.

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Section: Distribution Of Pyrolysis Productsmentioning

confidence: 99%

Nitrogen Migration during Pyrolysis of Raw and Acid Leached Maize Straw

Mou

Zou

et al. 2021

Sustainability

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“…A large amount of sweet potato vine is produced annually in the field. A small part of them is used as animal feed, and most of them are discarded as agricultural waste and underutilised [ 17 , 18 ], which leads to resource waste and environmental pollution. Dried SPV is rich in cellulose (33.01%), hemicellulose (12.25%), and lignin (7.85%) [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

“…A small part of them is used as animal feed, and most of them are discarded as agricultural waste and underutilised [ 17 , 18 ], which leads to resource waste and environmental pollution. Dried SPV is rich in cellulose (33.01%), hemicellulose (12.25%), and lignin (7.85%) [ 18 ]. Therefore, the use of SPV as a raw material to develop PC is worth considering.…”

Section: Introductionmentioning

confidence: 99%

Sweet-Potato-Vine-Based High-Performance Porous Carbon for Methylene Blue Adsorption

et al. 2023

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In this study, sweet-potato-vine-based porous carbon (SPVPC) was prepared using zinc chloride as an activating and pore-forming agent. The optimised SPVPC exhibited abundant porous structures with a high specific surface area of 1397.8 m2 g−1. Moreover, SPVPC exhibited excellent adsorption characteristics for removing methylene blue (MB) from aqueous solutions. The maximum adsorption capacity for MB reached 653.6 mg g−1, and the reusability was satisfactory. The adsorption kinetics and isotherm were in good agreement with the pseudo-second-order kinetics and Langmuir models, respectively. The adsorption mechanism was summarised as the synergistic effects of the hierarchically porous structures in SPVPC and various interactions between SPVPC and MB. Considering its low cost and excellent adsorption performance, the prepared porous carbon is a promising adsorbent candidate for dye wastewater treatment.

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Mycelium Composites for Sustainable Development in Developing Countries: The Case for Africa

Akromah,

Chandarana,

Eichhorn

2023

Advanced Sustainable Systems

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The socio‐economic struggles in Africa are partly attributed to the low productivity of the agricultural sector. The Sustainable Development Goals Centre for Africa (SDGC/A) and the African Development Bank Group (AfDBG) both agree that the continent needs sustainable interventions to boost agricultural productivity, employment, and income. In this regard, mycelium composite production can present one potential solution. The added value to agricultural waste used to produce mycelium composites can generate additional revenue for farmers, serving as an incentive to increase agricultural productivity. Furthermore, the establishment of mycelium composite start‐ups can increase employment and income, especially for women and the youth. Mycelium composites can also aid in mitigating environmental and health challenges caused by some of the current waste management practices in Africa. This review offers valuable insights into the potential use of mycelium composites as a sustainable alternative for Africa. It explores the potential use of locally accessible resources, the potential applications for the composites in Africa, and the potential challenges that may arise with this technology. It further assesses the potential contribution of this technology to sustainable development in Africa in line with the Sustainable Development Goals (SDGs) set by the United Nations (UN).

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Pyrolytic characteristics of sweet potato vine

Cited by 15 publications

References 17 publications

Nitrogen Migration during Pyrolysis of Raw and Acid Leached Maize Straw

Nitrogen Migration during Pyrolysis of Raw and Acid Leached Maize Straw

Sweet-Potato-Vine-Based High-Performance Porous Carbon for Methylene Blue Adsorption

Mycelium Composites for Sustainable Development in Developing Countries: The Case for Africa

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