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In recent years, the nitrogen controlled atmosphere (N2-CA) storage technology is being extensively investigated to minimize post-harvest losses by using nitrogen gas for achieving a N2-CA and maintaining a high level of nitrogen in the container through periodic nitrogen filling. Herein, our work demonstrated the ability of application of N2-CA...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 474 | Lượt tải: 0
In this study, ZnO nanoparticles made by hydrothermal method for adsorption of phosphate from water. These ZnO nanorods are characterized by a powder X-ray diffraction spectroscopy (XRD), scanning electron microscope (SEM), specific surface area (BET), energy dispersive X-ray spectroscopy (EDS). The ZnO materials were applied for adsorption of p...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 431 | Lượt tải: 0
In this study, ZnO nanoparticles made by hydrothermal method for adsorption of phosphate from water The adsorption of phosphate on ZnO nanomaterials follows the isothermal adsorption models Langmuir, Tempkin and Freundlich, single-layer adsorption, in the condition of heterogeneous material surface, there is weak interaction between adsorbent an...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 522 | Lượt tải: 0
Contamination status of 16 polycyclic aromatic hydrocarbons (PAHs) were examined in settled dust samples collected from working (ELV-W) and living (ELV-L) areas of end-of-life vehicle processing workshops and from urban houses (U-H) in northern Vietnam. Levels of 16 PAHs in the ELV-W samples ranged from 1200 to 3600 (median 3100) ng/g, which wer...
7 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 407 | Lượt tải: 0
Fe-C materials are made from powder Fe and graphite carbon powder, then determine the characteristics of surface morphology, structure, composition by Scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDX). Materials Fe-C is used removal of phenol from aqueous solution by internal microelectrolysi...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 567 | Lượt tải: 0
Organoclays synthesized from Indian bentonite (bent-A) and propyltriphenylphosphonium bromide (PTPB) according to [2] has been studied for its effect on methylene blue adsorption capacity compared to bent-A due to some of its factors. The results show that, under the survey conditions: time to reach adsorption equilibrium is 90 minutes (bent-A) ...
6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 513 | Lượt tải: 0
The nanocomposites photocatalyst of TiO2-WO3 was prepared by sol-gel and combined with calcination method at 425oC in one hour. The mesoporous WO3-TiO2 photocatalysts with different loadings of W (12, 14, 15, 17 and 20) wt% were used to remove methylene blue (MB 20%) from aqueous solution. The prepared photocatalysts were characterized by XRD, F...
7 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 530 | Lượt tải: 0
In this research, an iteration approximation algorithm based on the data of potentiometric titration and the least squares method to determine equilibrium constants of (5,6-dioxo-3-sulfoquinoline-7- yloxyl)acetic acid in aqueous solution is described. The ionic strength of all solutions were maintained by 1.0 M of KCl solution. The value of equi...
7 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 471 | Lượt tải: 0
To assess the accumulation of some heavy metals in sediment and axillary species Lanceolaria sp. The samplesn collected in 5 sites along Cau River in Hai Duong province from May to December 2018 were analysed for the concentration of Cu, Pb, Zn, Cd and Cr in sediment and Lanceolaria sp. The results showed the concentration of heavy metals in dri...
7 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 428 | Lượt tải: 0
Tóm tắt Bài báo này chỉ ra một kỹ thuật được sử dụng để xác định bề dày hữu dụng có bắt giữ i-ốt của hộp phin lọc than hoạt tính thường dùng hiện nay trong lấy mẫu không khí. Phương tiện chính sử dụng trong kỹ thuật này là một chương trình chuyển đổi hiệu suất ghi trong đo đạt hoạt độ phóng xạ. Kết quả của nghiên cứu cho thấy kỹ thuật này có ưu...
8 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 526 | Lượt tải: 0