Special Issue "Biochar Based Materials for a Green Future"

Submission Deadline: 30 June 2022
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Guest Editors
Zhen Fang, Professor, Nanjing Agricultural University, China.
Zhen Fang is a Professor and Leader of the Biomass Group at Nanjing Agricultural University. Professor Fang specializes in thermal/biochemical conversion of biomass, nanocatalyst synthesis and their applications, pretreatment of biomass for biorefineries, and supercritical fluid processes. He holds Ph.D.s from China Agricultural University and McGill University.

Lijian Leng, Professor, School of Energy Science and Engineering, Central South University, China.
Lijian Leng is a Professor at the School of Energy Science and Engineering, Central South University, Changsha, China. His interest focuses on biochar/hydrochar production from biomass and the upgrading of theses carbon materials for applications in energy and environment.

Buchun Si, Associate Professor, College of Water Resource and Civil Engineering, China Agricultural University, China.
Buchun Si is an Associate Professor at the College of Water Resource and Civil Engineering, China Agricultural University, Beijing, China. His current researches concentrate on hydrothermal conversion of biowaste for biofuels and value-added products production, and biochar accelerated anaerobic conversion.

Tengfei Wang, Assistant Professor, Faculty of Geosciences and Environmental Engineering, Southwest JiaoTong University, China.
Dr. Tengfei Wang is an Assistant Professor at the Faculty of Geosciences and Environmental Engineering, Southwest JiaoTong University, Chengdu, China. His current work focuses on hydrochar for biofuel production, activated carbon preparation, upgrading and modification of biochar/hydrochar, electrochemical materials, and catalysts.

Summary

Over the past 20 years, thermal conversion techniques have been developed as effective ways for the valorization of biowaste and biomass to valuable products and minimization of the environmental burden. As one of the most critical products, bio/hydro-char shows advantages in the fields of environmental remediation, energy storage, carbon-based materials, and chemical catalysis. In particular, the natural diversity of biomass and post modifications brings infinite possibilities to the utilization of bio/hydro-char materials. The material science and engineering is expecting the fast development of green process and sustainable precursors such as renewable biomass.

 

This special issue aims to collect recent outstanding works in the field. Topics of interest include but not limited to pyrolysis and hydrothermal conversion or a catalytical process for biochar production, and potential applications of bio/hydro-char material that are related to biodegradation, carbon capture and CO2 adsorption, enhancement of anaerobic digestion, soil remediation and crop productivity improvement, electrochemical materials preparation, activated carbon preparation for environmental pollutants removal including organics and heavy metals and organics, energy storage and solid biofuel, nano-biochar materials utilizations and co-work with nano materials.

 

This thematic issue will provide guidance for new knowledge and development of a green future for bio/hydro-char materials applications in environmental protection and energy sustainability.


Keywords
Biomass and biowaste; Thermal conversion; Bio/Hydro-char materials; Energy storage; Biofuel

Published Papers
  • Magnetic Wakame-Based Biochar/Ni Composites with Enhanced Adsorption Performance for Diesel
  • Abstract In this study, the magnetic wakame biochar/Ni composites were prepared with three activating reagents of H3PO4, ZnCl2 and KOH by one-step pyrolysis activation, characterized by BET, SEM, TEM, FI-IR, XRD, Raman, and elemental analyzer, and their adsorption performance for diesel were also analyzed. The results showed that wakame biochar/Ni composites had larger specific surface area, abundant porous structure, and various reactive groups, rendering its enhancement of adsorption efficiency. The adsorption experiments indicated that the maximum adsorption capacities for diesel using WBPA 0.5, WBHZ 0.5 and WBPH 0.5 were 4.11, 8.83, and 13.47 g/g, respectively. The Langmuir model was more suitable… More
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  • A Novel Magnetic Carbon Based Catalyst Synthesized from Reed Straw and Electric Furnace Dust for Biodiesel Production
  • Abstract In the era of serious greenhouse gas emission and energy shortage, it is necessary to use solid waste to prepare new renewable materials. In this work, the potential application of reed straw and electric furnace dust was explored. Firstly, magnetic carbon carrier (EFD&C) was prepared by high temperature calcination, and then magnetic carbon catalyst (SM@EFD&C) was prepared by activation of sodium methoxide. The catalyst was used to prepare biodiesel by transesterification reaction to test its activity and stability. Reed biochar, EFD&C and SM@EFD&C were detected by Diffraction of X-rays (XRD), Fourier transform infrared (FT-IR), Inductively coupled plasma (ICP), Scanning electron… More
  • Graphical Abstract

    A Novel Magnetic Carbon Based Catalyst Synthesized from Reed Straw and Electric Furnace Dust for Biodiesel Production
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  • Short-Term and Long-Term Effects of Natural and Artificial Carbonaceous Substrates on Greenhouse Gas Fluxes
  • Abstract The emissions of two greenhouse gases (GHG), carbon dioxide (CO2) and nitrous oxide (N2O), from six substrates with different carbonaceous content were compared in short and long-term incubation experiments. Three natural soils and three artificial chars were mixed with carbon (C) poor soil (Cambisol) to simulate real conditions after application of char to farmland. The natural soils were a Cambisol, an Anthrosol and a Histosol with C contents of 1.3%, 4.4% and 13.2%, respectively. The three chars produced through thermal conversion of wood chips by hydrothermal carbonisation (HTC), fluidized bed gasification and pyrolysis had C contents of 56.9%, 75.4% and… More
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  • The Estimation of the Higher Heating Value of Biochar by Data-Driven Modeling
  • Abstract Biomass is a carbon-neutral renewable energy resource. Biochar produced from biomass pyrolysis exhibits preferable characteristics and potential for fossil fuel substitution. For time- and cost-saving, it is vital to establish predictive models to predict biochar properties. However, limited studies focused on the accurate prediction of HHV of biochar by using proximate and ultimate analysis results of various biochar. Therefore, the multi-linear regression (MLR) and the machine learning (ML) models were developed to predict the measured HHV of biochar from the experiment data of this study. In detail, 52 types of biochars were produced by pyrolysis from rice straw, pig manure,… More
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  • Heavy Metal Remediation in Sludge Compost: Recent Progress
  • Abstract The safe and efficient disposal and utilization of sludge are major issues to be solved in solid waste treatment and environmental protection due to the complex characteristics of sludge and the low rate of innocuous treatments. Composting is a process of decomposing organic matter and transformed low-molecular organic acids into high-molecular humus substances under the action of microorganisms. Although land-use after composting has become an important direction for sludge treatment, heavy metal pollution is still the bottleneck problem restricting land use of sludge compost. Adding zeolite, hydroxyapatite, and other conditioning agents to the composting process affects the concentration or form… More
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