Assess the denitrification potential of fermented biosolids based on their specific denitrification rate (sdnr)There are some conclusions that can be drawn from this experiment: 1. The larger scale of the same conditions of earlier fermentation and dark-fermentation batch tests, despite produced a higher C/N ratio of 10.34 ± 0.17 and 10.14 ± 0.12; however once again confirmed that even at optimum condition, the C/N ratio of fermented biosolids would stil...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 830 | Lượt tải: 0
Water management and methane emission from rice cultivation: a case study in An Giang province, Viet NamAt the beginning of the crop (5 days after sowing), the CH4 emission increased gradually and there were no significant differences among treatments (p<0.05). In this stage, all plots were stagnant to keep soil anaerobic and limit grass germination. In the tillering stage (30-40 days after sowing), CH4 emission was the highest in the 3 treatments...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 930 | Lượt tải: 0
A two-Year field study of phyto remediation using solanum nigrum l. in Dongnai, VietnamThe results of the second year are similar to those of the first year. The Cd concentrations decreased in surface soils in all plots with S. nigrum growth. The Cd concentrations in the soils of the seven remediation plots decreased from an average of 2.33 mg kg-1 to an average of 1.53 mg kg-1, and the reduction ranged from 10 % to 14 %. The sta...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 888 | Lượt tải: 0
Determination of properties and elemental composition of municipal solid waste in order to proposal of waste-To-energy project in Binh Duong province - Phung Chi SyDomestic solid wastes were classified by screening through suitable diameters sieves into 10 samples of 04 groups with different sizes: 2 samples with sizes under and over 120 mm (M1- 1, M1-2); 2 samples with sizes under and over 80 mm (M2-1, M2-2); 2 samples with sizes under and over 40 mm (M3-1, M3-2); 4 samples with sizes under 40 mm, 40 to 8...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 902 | Lượt tải: 0
Energy recovery from active sludge of wastewater treatment plants - Nguyen Vo Chau NganThe testing of applying anaerobic digestion process as an additional step to a wastewater treatment system at aquatic product processing factories showed the following results: - The biogas yield after 30 days of treatments with sludge from fish processing factory was from 305.3 to 444.2 L/kg ODMfermented in treatment of C 95-98 and of C 85-90. ...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 971 | Lượt tải: 0
Impact assessment of the extended production responsibility implementation in Vietnam: a study on electronic waste management - Duc Quang NguyenIn this study, 3 scenarios are developed and assessed based on the obtained benefit, which is supposed to be a major dynamic factor for the system, as summarized in Table 2. It is found that, despite of the hazardous waste, the obtained benefits from electronic appliances are almost similar in case of large home appliances excluding the desktop ...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 1011 | Lượt tải: 0
Application of iron-Based adsorbent (feooh) to remove hydrogen sulfide (h2s) from biogas - Do Kha UanIn Vietnam, there are about 17,000 pig farms with over 500 pigs and less than 0.3 percent of them have a biogas facility. Biogas production from this size is about 50,000 m3/year. Therefore, developing the biogas purification technology plays an important role in biogas market in Vietnam. In this study, iron-based adsorbent (FeOOH) were tested a...
7 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 895 | Lượt tải: 0
Anaerobic digestion of sludge in wastewater treatment plant for energy recovery – a case study of Hanoi urban district - Thi Thuy BuiThe analysis and comparison between two scenarios of sewerage sludge management in the case of Long Bien district, Hanoi city have shown the benefits in energy aspect of mesophylic anaerobic digestion by producing a large amount of biogas. The digested sludge in the process has been post-treated for soil application or/and energy generation. The...
6 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 925 | Lượt tải: 0
Screening of peptide receptor sequences for amitrol detection using chromatographic biopanning - Nguyen Thi Lien ThuongChromatographic biopanning was successfully used to screen for high affinity peptide sequences to amitrol, a hardly detected endocrine disrupting chemical. The combination of chromatographic biopanning, pH gradient washing buffer (pH 8- pH 2.2), and elution by sonication were applied during the screening. No phage was seen in washing buffer of s...
8 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 754 | Lượt tải: 0
Removal of cod and ammonium from landfill leachate by using a modified eco - Bio – block material in anoxic-oxic systemThe ability of the COD and NH4+ removal from the leachate by the modified EBB has been investigated. The input COD and NH4+ were in the ranges from 600 mg/L – 1500 mg/L and 25 mg/L – 90 mg/L, respectively, the input flow rates from phase 1 to phase 3 increased from 0.25 L/hr to 1 L/hr and HRT were 74.4 hr, 37.2 hr and 18.6 hr. The experimental r...
5 trang | Chia sẻ: honghp95 | Ngày: 02/12/2020 | Lượt xem: 843 | Lượt tải: 0
