Henan Tianguan Group Co.

Nanyang, China

Henan Tianguan Group Co.

Nanyang, China
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Zhong C.,Nanjing University of Technology | Wang C.,Nanjing University of Technology | Wang F.,Nanjing University of Technology | Jia H.,Nanjing University of Technology | And 2 more authors.
RSC Advances | Year: 2016

Lignocelluloses featuring complicated structure and poor degradability usually require pretreatments prior to their utilization; synergistic microbial systems are ubiquitous in nature and now exhibit appealing features that inspire mounting interest in developing functional microbial consortia for biotechnology development. In this study, we introduced a microbial consortium composed of bacteria and fungi that synergistically exhibited great abilities of lignocellulose degradation. A pretreatment of lignocelluloses by using this functional microbial consortium was designed and results showed that enhanced degradability in wheat straw and the broth containing amounts of organic materials (e.g. volatile fatty acids and carbohydrates) that could be used for biogas synthesis were detected in the pretreatment system. A subsequent anaerobic fermentation with the application of the pretreated system showed a 39.24% and 80.34% increase in total biogas and methane yield as well as a faster startup in a 20 day production process compared to the process based on the untreated system. © 2016 The Royal Society of Chemistry.


Zhong C.,Nanjing University of Technology | Wang C.,Nanjing University of Technology | Wang F.,Nanjing University of Technology | Jia H.,Nanjing University of Technology | And 2 more authors.
Journal of Chemical Technology and Biotechnology | Year: 2015

BACKGROUND: As one of the most abundant natural resources, lignocellulosic biomass is usually utilized at low efficiencies because of its complicated structure and poor degradability, and pretreatments prior to utilization are therefore considered necessary. To overcome the disadvantages of traditional pretreatments for lignocellulosic biomass, a method based on the application of quaternary ammonium hydroxide was investigated. RESULTS: Remarkable structural transformation and compositional changes were detected in pretreated biomass, presenting significant removal of lignin and decreased cellulose crystallinity, which could contribute to enhanced degradability. Significant factors in this process were investigated by single-factor experiment and response surface methodology, and optimum conditions were calculated as: reaction time 7.0 h, temperature 51.6 °C, and concentration of solvent 16.8%. Biomass pretreated under these conditions presented a maximum saccharification yield of 73.71%, which was a 3-fold increase compared with the untreated sample. In addition, the solvent quaternary ammonium hydroxide was recycled five times for biomass pretreatment with high activity retained. CONCLUSIONS: Enhanced saccharification efficiency of lignocellulosic biomass was achieved by pretreatment with quaternary ammonium hydroxide. © 2014 Society of Chemical Industry.


Chen G.,Guangzhou University | Li B.,Guangzhou Kejing Chemical Co. | Zhao J.,Shenzhen Sungallon Rubber and Plastic Co. | Gan L.,Henan Tianguan Group Co. | And 3 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2013

The blends of high molecular weight poly(propylene carbonate) (PPC) and poly(butylene succinate) (PBS) were prepared by melt blending using 4, 4', 4″-triphenylmethane triisocyanate (TTI) as reactive coupling agent. TTI also serves as compatibilizer for PPC/PBS blends. the properties of PPC/PBS blends were investigated through the measurements of melt flow rate, Vicat softening temperature, tensile testing and impact testing. The increase of torque during melt blending and the decrease of melt flow rate indicate the reaction of chain extension. The enhancement of thermal and mechanical properties of PPC/PBS blends demonstrates the improvement of compatibility between PPC and PBS. When 0.36 phr TTI was added, the elongation at break of PPC/35PBS blends increases from 46.3% to 212.0%, the Charpy impact strength increases from 4.5 kJ/m2 to 9.0 kJ/m2, and the Vicat softening temperature improves from 57.6°C to 68.7°C.


Chen G.,Guangzhou University | Zhao J.,Shenzhen Sungallon Rubber and Plastic Co. | Li B.,Guangzhou Kejing Chemical Co. | Gan L.,Henan Tianguan Group Co. | And 3 more authors.
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | Year: 2013

Completely biodegradable composites of poly(propylene carbonate) (PPC) and poly(lactic acid) (PLA) were melt blended using 4, 4-methylene diphenyl diisocyanate (MDI) as reactive coupling agent. The compatible blend was calendered into films with different degree of orientation. SEM observations reveal that the films exhibit obvious orientation only in machine direction (MD). WAXD measurements indicate that the degree of orientation in MD increases with the roller speed increasing. Static mechanical tests show that tensile strength in MD and tear strength in TD increase with the degree of orientation increasing. When the degree of orientation increases from 0.058 to 0.102, the tensile strength in MD increases from 38.8 MPa to 48.6 MPa, and the tear strength in TD improves from 142.2 N/mm to 185.3 N/mm.


Zhong C.,Nanjing University of Technology | Wang C.,Nanjing University of Technology | Wang F.,Nanjing University of Technology | Jia H.,Nanjing University of Technology | And 2 more authors.
Carbohydrate Polymers | Year: 2016

Cellulose isolation, a promising way for lignocellulosic biomass utilization, is always restricted by the poor solubility of cellulose. In this paper, tetra-n-methylammonium hydroxide (TMAH) was confirmed to be capable of readily dissolving/regenerating cellulose without chemical modification at room temperature. Meanwhile, cellulose isolation from lignocellulosic biomass by initially dissolving the biomass in TMAH followed by cellulose precipitation was proposed, and the isolated substance with average cellulose purity of 92.1 ± 0.3% could be obtained throughout this process under the optimum conditions: temperature 52°C, time 60 min, and loading ratio of TMAH/biomass (w/w) 7.2:1. Besides, high efficiency cellulose isolation (i.e. >70% cellulose purity) could be continuously remained during 4-round cycles by using the recycled TMAH solvent without distinct activity loss. © 2015 Elsevier Ltd.


PubMed | Henan Tianguan Group Co. and Nanjing University of Technology
Type: | Journal: Carbohydrate polymers | Year: 2015

Cellulose isolation, a promising way for lignocellulosic biomass utilization, is always restricted by the poor solubility of cellulose. In this paper, tetra-n-methylammonium hydroxide (TMAH) was confirmed to be capable of readily dissolving/regenerating cellulose without chemical modification at room temperature. Meanwhile, cellulose isolation from lignocellulosic biomass by initially dissolving the biomass in TMAH followed by cellulose precipitation was proposed, and the isolated substance with average cellulose purity of 92.1 0.3% could be obtained throughout this process under the optimum conditions: temperature 52 C, time 60 min, and loading ratio of TMAH/biomass (w/w) 7.2:1. Besides, high efficiency cellulose isolation (i.e. >70% cellulose purity) could be continuously remained during 4-round cycles by using the recycled TMAH solvent without distinct activity loss.

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