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Dear Colleagues,

As carbon neutralization goals have been proposed worldwide, biomass, the only renewable carbon source, has gained increasing attention for preparing fuels, animal feeds, beneficial chemicals, and materials for environmental applications. Biomass conversion has no carbon dioxide emissions in life cycle applications. However, backward technology for utilizing biomass, such as non-standard combustion and general landfill, results in secondary pollution. The green, safe, and high-value utilization of biomass and solid waste has been proposed. Research on new advances in biomass conversion and its environmental implications requires intense efforts.

This Special Issue, entitled “New Advances in Biomass Conversion and the Environmental Implications-2nd Edition”, mainly covers research on the fundamental and applied sciences of biomass conversion, bio-materials, and utilization, with the aim of developing technologies for carbon neutrality and the control of environmental pollution. The scope of this Special Issue includes but is not limited to, the following topics: (1) fuel, fertilizer, and feed production from the optimized process of biomass, (2) advances in the conversion of biomass to chemicals and materials, (3) fundamental and applied sciences of biomass biochemical conversion, (4) the environmental implications of bio-materials, (5) low-carbon economy sustainability based on biomass processing, and (6) pollution control.

Dr. Peng Liu
Dr. Dongze Niu
Guest Editors

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Keywords

biomass conversion
energy production
pollution control
environmental implications
biomass biochemical conversion

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Research

13 pages, 2630 KiB

Open AccessArticle

Study on Nitrogen Migration during Co-Pyrolysis of Melamine-Impregnated Paper Waste and Camellia Oleifera Shell

by Zhen Zhuo, Yanling Li, Peng Liu, Tanglei Sun and Tingzhou Lei

Sustainability 2024, 16(3), 1197; https://doi.org/10.3390/su16031197 - 31 Jan 2024

Cited by 1 | Viewed by 535

Abstract

Melamine-impregnated paper waste (MIPW) is an unavoidable byproduct of the melamine-impregnated paper production process, and it must be urgently disposed. In this paper, due to its high N content, MIPW was used as a N source to co-pyrolyze with camellia oleifera shell (COS). By changing the proportion of MIPW in the raw materials, the migration path of the N was studied during the co-pyrolysis process. X-ray photoelectron spectroscopy (XPS), elemental analysis (EA), total nitrogen analysis (TN) and ultraviolet spectrophotometry were used to determine the content and the types of N-containing components in raw materials and products. The results showed that during the co-pyrolysis process, the N in MIPW and COS would be converted into different types of N-containing components, and the proportion of MIPW in raw materials directly impacts the product distribution and the N migration path. With the increase in the proportion of MIPW from 10 to 50 wt.% (daf, mass ratio), the proportion of N in raw materials that migrated into the solid phase decreased from 27.58 to 16.31 wt.%, while that which migrated to the gas and liquid phases increased from 24.92 and 47.50 wt.% to 25.97 and 57.72 wt.%, respectively. The proportions of N in the raw materials that changed into pyridinic-N, pyrrolic-N and graphitic-N in the solid phase and N₂-N in the gas phase were decreased. The proportions of NH₃-N and HCN-N in the gas phase and NH₃-N and organic-N in the liquid phase were increased. Moreover, synergies were observed during the co-pyrolysis process, which affected the N migration path in the raw material. This study will provide policy directions and theoretical support for the comprehensive utilization of MIPW and COS. Full article

(This article belongs to the Special Issue New Advances in Biomass Conversion and the Environmental Implications-2nd Edition)

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