Fuel

In this study, a sustainable two-stage air oxidation (TAO) was employed to prepare Fe modified MnOx-biochar catalyst (C-O2-MF-O2) instead of high temperature treatment and/or chemical activation for selective catalytic reduction of NO with NH3 (NH3-SCR). The collaborative effect of Fe modification and TAO on the physico-chemical properties and catalytic performance of catalysts was systematically studied. […]

Anaerobic digestion (AD) of the hydrothermal liquefaction aqueous phase is often inhibited by high levels of nitrogen heterocyclics, which hinder its valorization. Despite the potential benefits of conductive materials in promoting the degradation of toxic compounds through the establishment of direct interspecies electron transfer (DIET), there is still a gap in the understanding of their […]

Enhancing biochar’s adsorption and solidification performance in compound-polluted aqueous solutions remains a crucial task for achieving the cost-effective removal of heavy metals from water bodies. The study examined the removal performances and mechanisms of Cu(II) and Cr(III) using biochar prepared from food waste at tem-peratures of 350 degrees C, 450 degrees C, and 550 degrees […]

This study aims to demonstrate the general carbocatalytic conversion behaviors and reaction mechanisms of representative biomass-derived primary pyrolytic products towards product upgradation. Specifically, 4-Ethyl-guaiacol (4-EGC) and 5-hydroxymethylfurfural (5-HMF) were selected as lignin-and cellulose/hemicellulose-derived model compound, respectively, to elucidate the origin of products under different temperatures and biochar-reactant mixing ratios. Three reaction routes were distinguished, including […]

Mesophilic anaerobic bacteria rely on a relay degradation process to convert chitin-containing waste into methane. This study investigated the effects of biochar on the anaerobic digestion (AD) of shell waste (SW) and explored the impact on methane yield in the anaerobic co-digestion of food waste with SW. The biochar (BC) added for AD of SW […]

The combustion of pulverized fuels in industrial production is inefficient and aggravates haze formation. A novel and green approach via synergetic using two solid waste resources (waste bamboo powder and waste coke breeze) for producing formed biocoke products as a metallurgical coke substitute was proposed in this study. A biochar with high fixed carbon (87.32 […]

The application of biomass-based sources for energy generation has attracted much interest in recent times due to their environmental benefits. In this study, the potential use of rubber seed shells and eggshells in the synthesis of bi-functional catalysts for biodiesel production has been investigated. The catalyst was produced in a sequence of steps that included […]

Redundant CO2 produced during wet anaerobic digestion (AD) needs proper in-situ minimization, in which the amino groups in polyethyleneimine (PEI) can react with CO2 to form bicarbonate by diffusing into the liquid phase. Hence, the addition of PEI-grafted material may provide a novel way to in-situ supplement bicarbonate in the AD system, which could further […]

This report presents a novel system combining microcurrent-coupled magnetic layered double hydroxide and biochar to enhance the anaerobic degradation performance of highly-concentrated phenolic wastewater. The coupled system achieves removal efficiencies for COD and 2,4,6-trichlorophenol (2,4,6-TCP) of 71.1 % and 75.40 %, respectively, which are 2.25 and 2.50 times higher than those achieved by raw sludge. […]

The thermochemical utilization of biomass char is vital for addressing environmental pollution and the energy crisis. The carbonaceous structure plays a crucial role in this process, and understanding the conversion mechanism aids in optimizing biomass reactors. This study performs a comprehensive analysis of hightemperature rice husk char using 13C NMR, XPS, and FTIR techniques. The […]