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Comparing sorption characteristics of Tetrabromobisphenol-A, bisphenol-A, and 2,6-dibromophenol in a single-aolute aystem

100%

Li X., Peng X., Zhang Z., Jia X.

Polish Journal of Environmental Studies

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2016

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tom 25

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nr 5

Tetrabromobisphenol-A (TBBPA) and its analogue compounds (bisphenol-A (BPA) and 2,6-dibromophenol (2, 6-DBP)) sorption on CTMAB-clays was investigated in this paper through bath experiments. Montmorillonite and kaolinite modified by CTAMB, as the adsorbent, were firstly characterized by XRD, FTIR and SEManalysis. The surface areas was determined using N2 (77K) sorption-desorption analysis. Kinetic studies showed that sorption reached equilibrium in 5 hours and followed the pseudosecond order kinetic model. The intra-particle diffusion model for sorption was also investigated and compared to identify the sorption mechanism. The sorption isotherms, well fitted by Freundlich model, were changed from being non-linear to being linear with intercalating CTMAB into clays, which indicated that CTMAB increased the partition interaction. A combination of partition and specific sorption might be contributed to TBBPA and its composition products sorption mechanism. The Freundlich coefficients (kF) and distribution coefficients (kd) for both two adsorbents were primarily increased by increasing amount of adsorbed CTMAB, while the organic carbon normalized sorption coefficients (koc) did not follow this trend. Meanwhile, 100%CEC-CTMAB-Montmorillonite showed an advantage of removal of the selected compounds than 100%CEC-CTAMB-Kaolinite. The sorption capacity of BPA was bigger than that of 2,6-DBP in spite of their similar hydrophobicity, which indicated some molecule properties might influence the sorption on CTMAB-clays. Moreover, the negative ΔG0 and ΔH0 indicated the spontaneous and exothermal process. The TBBPA sorption on CTMAB-clays was considerably enhanced in the acid condition.

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Contrasted effects of biochar on maize growth and N use efficiency depending on soil conditions

100%

Zhu Q., Peng X., Huang T.

International Agrophysics

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2015

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tom 29

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nr 2

Biochar amendment may improve crop growth through its nutrients and indirect fertility. However, this improvement varies in a wide range of biochars, crops, and soils. Our objectives were to determine the response of crop growth to biochar amendment and to assess the N use efficiency relative to the biochar and the soil types. In this pot experiment, we investi-gated five typical agricultural soils in China amended with two biochars. Four treatments were designed: the soil itself as a control, the soil amended with 1% biochar, the soil with fertilizer NPK, and the soil with added biochar and fertilizer. Biochar amendment increased the maize biomass and the N use efficiency in the red soil (p<0.05) but not in the other four soils (p>0.05). In the red soil, the biomass under biochar+NPK was 2.67-3.49 times higher than that of only NPK, and 1.48-1.62 times higher than that of only biochar amendment, 21-36 and 35-42% of which were contributed from biochar fertility and indirect fertility, respectively. This study indicates that biochar amendment is very plausible for the red soil but has a minor or even negative effect on the other four soils in China.

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Responsiveness comparison of three stress inducible promoters in transgenic rice

88%

Teng H., Shen B., Liu E., Zhang J., Peng X.

Acta Physiologiae Plantarum

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2018

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tom 40

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nr 10

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Effects of euploid blastocyst morphological development on reproductive outcomes

76%

Peng X., Yu M., Li L., Fu W., Chen H., Sun X., Chen J.

Reproductive Biology

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2020

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tom 20

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nr 4

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Tests and analyses on mechanical characteristics of dwarf-dense-early major cotton variety stalks

64%

Liang R., Chen X., Zhang B., Peng X., Meng H., Jiang P., Li J., Zhou P., Kan Z.

International Agrophysics

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2020

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tom 34

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nr 3

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MicroRNA transcriptome analysis of poly I:C-stimulated and PRRSV-infected porcine alveolar macrophages

64%

Wu J., Ji Z., Qiao M., Peng X., Wu H., Song Z., Zhao H., Liu G., Li F., Mei S.

Journal of Applied Genetics

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2019

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tom 60

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nr 3-4

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Genome-wide identification of allele-specific expression in response to Streptococcus suis 2 infection in two differentially susceptible pig breeds

52%

Wu H., Gaur U., Mekchay S., Peng X., Li L., Sun H., Song Z., Dong B., Li M., Wimmers K., Ponsuksili S., Li K., Mei S., Liu G.