Large-scale soil application of hydrochar: Reducing its polycyclic aromatic hydrocarbon content and toxicity by heating.

The beneficial roles of hydrochar in carbon sequestration and soil improvement are widely accepted. Despite few available reports regarding polycyclic aromatic hydrocarbons (PAHs) generated during preparation, their potential negative impacts on ecosystems remain a concern. A heating treatment method was employed in this study for rapidly removing PAHs and reducing the toxicity of corn stover-based hydrochar (CHC).

Fabrication of Anatase TiO/PVDF Composite Membrane for Oil-in-Water Emulsion Separation and Dye Photocatalytic Degradation.

At present, the types of pollutants in wastewater are more and more complicated, however, the multifunctional membrane materials are in short supply. To prepare a membrane with both high efficient oil-in-water emulsion separation performance and photocatalytic degradation performance of organic dyes, the bifunctional separation membrane was successfully prepared by electrostatic spinning technology of PVDF/PEMA and in situ deposition of anatase TiO nanoparticles containing Ti and oxygen vacancies (O). The prepared composite membrane has excellent hydrophilic properties (WCA = 15.

Liquid-solid ratio during hydrothermal carbonization affects hydrochar application potential in soil: Based on characteristics comparison and economic benefit analysis.

Returning straw-like agricultural waste to the field by converting it into hydrochar through hydrothermal carbonization (HTC) is an important way to realize resource utilization of waste, soil improvement, and carbon sequestration. However, the large-scale HTC is highly limited by the large water consumption and waste liquid pollution. Here, we propose strategies to optimize the liquid-solid ratio (LSR) of HTC, and comprehensively evaluate the stability, soil application potential, and economic benefits of corn stover-based hydrochar under different LSRs.

[Analysis of the bacterial diversity in intestines of Hepialus gonggaensis larvae].

Objective: We investigated the intestinal microbial diversity in the larval gut of Hepialus gonggaensis, an economically important insect.

Methods: We used morphological, physiological, chemotaxonomic characteristics and 16S rRNA analysis method, and the molecular method of PCR-DGGE (denaturing gradient gel electrophoresis) analysis based on the sequence of 16S rRNA V3 region gene.

Results: By the traditional isolation method, 8 genera of bacteria were identified from 11 isolated bacterial populations.

[Analysis of fungal diversity in intestines of Hepialus gonggaensis larvae].

Objective: Studied fungi diversity in the guts of larval Hepialus gonggaensis using culture-independent and traditional culturing methods.

Methods: For the culture-independent method, the total DNA of fungus was extracted from the intestinal contents and internal transcribed spacer (ITS) regions were amplified with fungal universal primers. A near-full length ITS gene library was constructed.

Analysis of the intestinal microflora in Hepialus gonggaensis larvae Using 16S rRNA sequences.

Gut microbial diversity provides insight into the basic function of a gut microbial ecosystem. In this study, restriction fragment length polymorphism 16S rRNA sequences was used to detect the intestinal microbial diversity of Hepialus gonggaensis larvae. The total DNA of microorganisms was extracted from the intestinal contents and 16S rRNA was amplified.