Institute of Environment and Sustainable Development in Agriculture, Caas

Lixin Zhao

Zonglu Yao

Juan Luo

Jiadong Yu

Yi Liang

Junyi Ma

Yulei Zhang

Ruixia Shen

Yuxuan Sun

Jixiu Jia

Lili Huo

Teng Xie

Provided are a carbon composite and a preparation method thereof. The preparation method includes: distilling a bio-tar to obtain a distilled substrate; mixing the distilled substrate and a biochar material to obtain a polymerization starting material; polymerizing the polymerization starting material to obtain a polymer; and mixing the polymer with an activator to obtain a mixture and subjecting the mixture to activation to obtain the carbon composite; wherein the distilling is conducted at a temperature of 120° C. to 150° C.; the activator includes sodium bicarbonate, and a mass ratio of the polymer to the activator is in a range of 1:1 to 1:4; and the activation is conducted at an activation temperature of 700° C. to 800° C. in an anoxic atmosphere for 1 h to 2 h, and the activation temperature is obtained by heating at a speed of 5° C./min to 10° C./min.

Carbon composite, and preparation method and use thereof

Provided are a three-dimensional carbon-based copolymerization composite, and a preparation method and use thereof. The preparation method includes dissolving a hydroxyquinone compound and a diamine compound to obtain a dissolved system, and subjecting the dissolved system to first reaction to obtain first reaction system; mixing the first reaction system and monomer, and subjecting a resulting mixed system to amidation to obtain an amidation reaction system; subjecting a graphitized carbon to first dispersion, ball milling, and second dispersion sequentially to obtain a graphitized carbon dispersion; and mixing the amidation reaction system, the graphitized carbon dispersion, a cross-linking agent, and an initiator, and subjecting a resulting mixture to polymerization to obtain the three-dimensional carbon-based copolymerization composite, wherein a molar ratio of the diamine compound to the hydroxyquinone compound is 1:(2-3); and the monomer comprises a carboxyl group and a double bond in a structure thereof.

Three-dimensional carbon-based copolymerization composite, and preparation method and use thereof

The present disclosure provides a method for two-phase partitioning production of a medium-chain fatty acid (MCFA) by dry anaerobic digestion. In the present disclosure, due to a slow heat transfer of the dry anaerobic digestion, a same dry anaerobic digestion device is naturally divided into two phases, and the MCFA is synthesized while producing electron acceptors and electron donors in the same dry anaerobic digestion device. Meanwhile, the dry anaerobic digestion device is provided with a high-efficiency decomposing microbial inoculant on an upper part and inoculated with sludge having a carbon chain extension function on a lower part. In this way, a material residence time is regulated, and cycles of hydrolytic acidification and carbon chain extension are shortened, thereby achieving the high-value conversion of agricultural waste while increasing a conversion rate of organic acids in the dry anaerobic digestion.

Method for two-phase partitioning production of medium-chain fatty acid (MCFA) by dry anaerobic digestion

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Beijing, China

Lixin Zhao