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Fixed-bed column adsorption of fluoroquinolone antibiotic from aqueous solution onto sugarcane bagasse biochar
Abstract. The ability of the agricultural residue of sugarcane bagasse to serve as an absorbent material used to remove Ciprofloxacin (CIP), one of strong Fluoroquinolone antibiotic from aqueous solutions in fixed-bed columns was investigated. The properties of biochar sugarcane bagasse were characterized using scanning electron microscopy (SEM)...
12 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 499 | Lượt tải: 0
Treatment efficiency of piggery wastewater by surface and horizontal subsurface flow constructed wetlands
Abstract. Constructed wetlands (CWs) have been used to treat various types of wastewaters such as urban runoff, acid mine drainage, municipal, industrial, and livestock wastewaters. This study was conducted to evaluate the effectiveness of two constructed wetlands (surface and horizontal subsurface flows) for piggery wastewater treatment after b...
9 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 520 | Lượt tải: 0
Forecast of water quality of To Lich river based on scenarios of Ha Noi sewerage planning by using model QUAL2K
Abstract. To Lich River is well-known as a main drainage river and plays a vital role to the landscape distribution of Ha Noi city, which is currently polluted due to improperly untreated wastewater flow. Thanks to QUAL2K model, the variation of the river water quality has been forecasted by 4 particular scenarios. In the first scenario, the who...
9 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 558 | Lượt tải: 0
Heavy metals contamination in groundwater resource in Dak Nong province, Viet Nam
Abstract. This study aims to understand the concentrations of selected heavy metals including arsenic, iron, manganese, cadmium and mercury in groundwater used for domestic purposes in Dak Nong Province of Viet Nam. A total number of 572 groundwater samples including 61 duplicates were collected during October, 2018 – April, 2019. The collected ...
8 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 646 | Lượt tải: 0
Evaporation measurement from free water surface
Abstract. This paper aims to quantify the amount of water surface evaporation with special regard to the EWM evaporation pan and to relate the direct measurements to the Penman and other empirical equations. Based on the available 10-minute interval data on the EWM pan evaporation and the data on precipitation for the same intervals, the net wat...
13 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 544 | Lượt tải: 0
Sea surface temperature trends and the influence of ENSO on the southwest sea of Vietnam using remote sensing data and GIS
Abstract In this article, the sea surface temperature trends and the influence of ENSO on the southwest sea of Vietnam were analyzed using the continuous satellite-acquired data sequence of SST in the period of 2002– 2018. GIS and average statistical methods were applied to calculate the average monthly and seasonal sea surface temperature, the...
13 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 602 | Lượt tải: 0
Impacts of pollution discharges from Dinh Vu industrial zone on water quality in the Hai Phong coastal area
Abstract The hydrodynamic and water quality models (the Delft3D model) were established based on the measured data and the estimated pollution discharges from Dinh Vu industrial zones to Nam Trieu estuary. With seven separate simulation scenarios, the results show that in case of increased wastewater with the control of pollution discharge (wat...
15 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 563 | Lượt tải: 0
Characteristics of fish fauna in marine ecosystems in the World Biosphere Reserve of Cu Lao Cham - Hoi An
Abstract Assessments of fish fauna in the World Biosphere Reserve of Cu Lao Cham - Hoi An were based on analyses of data of visual censuses and samples collected at 5 sites of nipa palm, 9 sites of seagrass beds and 15 sites of coral reefs in June 2016, 200 samples from 25 fishing gears in wet and dry seasons (November 2015 and June 2016), and ...
16 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 659 | Lượt tải: 0
Initial evaluation of nitrogen uptake of Thalassia hemprichii in Nha Trang, Khanh Hoa
Abstract The uptake rate of nitrate by leaves and roots was simultaneously investigated in the seagrass T. hemprichii collected from Lo river, Nha Trang. The principle of nutrient uptake of seagrass was based on the approaches of the Michaelis-Menten model. The laboratory experiments of nitrate uptake were done the ranges of ambient nitrate con...
9 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 464 | Lượt tải: 0
Research on contradictions and priorities in integrated planning of the coastal space in Hai Hau - Nghia Hung districts, Nam Dinh province
Abstract Hai Hau - Nghia Hung are two coastal districts in the Southeast of Nam Dinh province with total area of 35,652.29 km2. Located in the middle between the Southern provinces of the Red river delta and the North Central provinces, Hai Hau and Nghia Hung are about 100 km from Hanoi along National Route 1A and 80 km from Hai Phong, in an ar...
7 trang | Chia sẻ: thanhle95 | Ngày: 10/07/2021 | Lượt xem: 513 | Lượt tải: 0