Guangxi Bossco Environmental Protection Technology Co.

Nanning, China

Guangxi Bossco Environmental Protection Technology Co.

Nanning, China
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Wei J.,Guangxi University | Liu K.,Guangxi University | Du C.,Guangxi University | Zhou Y.,Guangxi Bossco Environmental Protection Technology Co. | Lin C.,Guangxi University
Proceedings of the National Academy of Sciences India Section A - Physical Sciences | Year: 2017

A novel Mannich derivative of protocatechuic acid, 3-diethylaminomethyl-4,5-dihydroxy-benzoic acid (PADE), was synthesized for the first time. The structure of PADE was confirmed by infrared spectrum, mass spectrum, and X-ray crystallography. The derivative PADE crystallizes in the monoclinic space group P2(1)/c with cell parameters of a = 8.820(2) Ǻ, b = 11.469(3) Ǻ, c = 14.227(4) Ǻ, β = 107.128(3)°, V = 1375.3(6) Ǻ3 and Z = 4. The average H···A distance is 1.980 Ǻ, which indicates the existence of strong hydrogen bond. The intermolecular and intramolecular hydrogen bonds generate the Mannich derivative PADE into a three-dimensional architecture. The antioxidant activity of PADE was evaluated by scavenging 1,1-diphenyl-2-picrylhydrazyl (DPPH) and reducing power determination. The results showed that PADE displayed dose-dependency in DPPH radical scavenging and reducing power assays. DPPH radical scavenging activity of PADE (IC50, 1.2 × 10−5 mol/l) was higher than that of protocatechuic acid (5.2 × 10−5 mol/l) and ascorbic acid (2.5 × 10−5 mol/l). The reducing power of PADE was higher than that of ascorbic acid but weaker than that of the raw material protocatechuic acid. The 3D structure of PADE is stabilized by intermolecular and intramolecular hydrogen bonds, which may raise its antioxidant activity. © 2017, The National Academy of Sciences, India.

Chen Y.-L.,Guangxi University | Liu Y.,Guangxi University | Wang S.-F.,Guangxi University | Song H.-N.,Guangxi Bossco Environmental Protection Technology Co. | And 2 more authors.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2014

In this paper the composition and properties of EfOM in biological effluent of pulp and paper wastewater and the removal behavior of EfOM by Fenton process were studied. Results showed that hydrophobic organic fractions predominated in EfOM, especially hydrophobic acid, its CODCr and UV254 were 64% and 53%, respectively. The EfOM mainly contained the substances with apparent molecular weight (AMW) higher than 10000. EfOM was effectively removed by Fenton process. The recommended dosage was 0.5 Qth, pH was 3, [H2O2]:[Fe2+] was 5:1, and the reaction time was 20 min, the effluent of Fenton process could meet the discharge requirement of the regulation. The main organic matter of effluent of Fenton process was hydrophobic acid, the next was hydrophilic matters, the organic matters with high molecular weight were removed effectively, about 60% of organic matters of the effluent were with AMW lower than 3000. ©, 2014, China Technical Association of Paper Industry. All right reserved.

Huang Z.,Guangxi University | Ding S.,Guangxi University | Li Z.,Guangxi University | Lin H.,Guangxi Bossco Environmental Protection Technology Co. | And 6 more authors.
International Journal of Hydrogen Energy | Year: 2016

Stearic acid (SA) was dispersed in tetralin (a hydrogen donor) and hydrotreated in a batch reactor over a fabricated sulfided NiMo/γ-Al2O3-β-zeolite catalyst to obtain a diesel-range fuel product. NiMo/γ-Al2O3-β-zeolite catalysts were prepared by loading the active components NiO and MoO3 onto a mechanically mixed γ-Al2O3 and β-zeolite support, followed by a sulfurization procedure. The effects of the catalytic properties and reaction conditions on the hydrodeoxygenation of SA were investigated. The results showed that increasing the β-zeolite in the support leads to a decrease in SA conversion and an increase in the isomerization of products; increasing the NiO and MoO3 mass fraction tends to promote the formation of alkene hydrocarbons and increase the level of isomerization; increasing the Ni molar fraction helps to promote both conversion and isomerization; and temperatures above 330 °C promoted the activities of the catalysts and tetralin. A nearly 90% SA conversion was achieved at 350 °C under H2 at a pressure of 0.8 MPa for 2 h in tetralin. The total content of C16C18 alkanes and alkenes in the products was about 98%, and the isomerized compounds accounted for 10-40 wt%. © 2016 Hydrogen Energy Publications LLC.

Huang Y.-M.,Nanning Sugar Industry Co. | Zhou M.-X.,Guangxi Bossco Environmental Protection Technology Co. | Xu C.-S.,Guangxi Bossco Environmental Protection Technology Co. | Chen S.-Y.,Nanning Sugar Industry Co. | And 2 more authors.
Chung-kuo Tsao Chih/China Pulp and Paper | Year: 2012

ECF technology has been successfully applied in bagasse pulp bleaching, the quality of the pulp is improved after bleaching, and the pollution load of the wastewater is decreased compared with the conventional process. The mill adopting ECF bleaching technology realizes cleaned production and strengthens the core competitiveness.

Chen Y.L.,Guangxi University | Zhou Y.X.,Guangxi Bossco Environmental Protection Technology Co. | Wang S.F.,Guangxi University | Liu Y.,Guangxi University | And 3 more authors.
Asian Journal of Chemistry | Year: 2014

A new synthesis iron oxide coated sand catalyst (SCS) was synthesized by oil bath evaporation method. The physicochemical characteristics of the SCS were evaluated by various techniques such as SEM and ASAP. Particle size is about 100 nm; specific surface area is 3.1347m2/g; surface iron oxide crystalline is hematite (a-Fe2O3). Synthetic iron oxide coated sand catalyst had well acidic and alkali resistances and the contents of Fe was determined by atomic spectrophotometer was 8.014 mg Fe/g.

Wang X.Y.,Guangxi University | Wu Q.,University of Jinan | Wu Q.,Guangxi Bossco Environmental Protection Technology Co. | Wang B.B.,University of Jinan | And 3 more authors.
Applied Mechanics and Materials | Year: 2014

Cr6+ wastewater treatment by the self-designed the electric flocculation device has been investigated. This paper analyzed the factors such as the reaction time, reaction voltage, Electrode current, the electrolyte concentration, as well as Reaction pH on the effect of Cr6+ wastewater treatment. Comparison of previous studies: Under neutral condition, reaction current was 4.5A, reaction voltage was 25V, electrolytic time was 25 minutes. After processing Cr6+down to concentration of 0.02mg/l, which reached the national sewage discharge standards (GB8978-2002). © (2014) Trans Tech Publications, Switzerland.

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