Browsing by Author Nguyen, Manh Khai

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  • TC_02643.pdf.jpg
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  • Authors: Chu, Anh Dao; Pham, Manh Con; Nguyen, Manh Khai (2010)

  • Reusing domestic wastewater for irrigation is a common practice in peri -urban areas in Vietnam. This study investigates the characteristic of domestic wastewater in Hanoi City in terms of nutritive value and potential risk in using for agriculture. The wastewater samples were collected in four main drainage rivers of the City including Lu, Set, Ki m Nguu, and To Lich River during March to May 2010. We found that the wastewater of Hanoi City is seriously polluted by organic matters. The nutrient parameters were reall y high and which is suitable for agricultural irrigation. The wastewater mi ght supply...

  • TC_02612.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Quang Ha; Nguyen, Cong Vinh; Gustafsson, Jon Petter; Öborn, Ingrid (2008)

  • The application of biosolids as a fertilizerin agricultural cultivation are common practices in many countries. This study investigates the effects of such practices in field experiments on Fluvisol and Acrisol soils in peri-urban Hanoi City. We compared biosolid-fertilized vegetable/rice-dominated systems (biosolids applied as chicken manure (Acrisol in Vinh Phuc Province) or composted pig manure mixed with rice straw (Fluvisol in Ha Tay Province). The biosolids were applied at six different rates representing from 0 to 450% of the normal annual dose used by local farmers. The application of biosolids had highly significant positive effects on organic carbon (TOC%) and t...

  • TC_02600.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Thanh Tuan; Nguyen, Cong Vinh; Oborn, Ingrid  (2008)

  • Reusing domestic wastewater for irrigation and applying biosolids as a fertiliser in crop  production are common practices in peri‐urban areas of Vietnam. This study investigates the effects  of using domestic wastewater in field experiments on Fluvisols soils in peri‐urban areas of Hanoi  and Nam Dinh cities. We compared long‐term (30‐50 years) wastewater‐irrigated rice‐dominated  farming systems. Using wastewater for irrigation significantly affected pH, electrical conductivity  (EC), exchangeable K and Na and reverse aqua regia‐digestible (Rev Aq Reg) copper (Cu), lead (Pb)  and zinc (Zn) in the investigated areas compared with control plots irrigated using river water.  Th...

  • e33.2.7.pdf.jpg
  • Article


  • Authors: Nguyen, Thi The Nguyen; Pham, Van Hoang; Nguyen, Manh Khai (2017)

  • Emissions of greenhouse gases such as CO2 and CH4 from artificial reservoirs, especially wide lakes in the tropics as the Son La hydropower reservoir, are leading to global warming. CO2 and CH4 gases in hydropower reservoirs are caused by the decomposition of organic matter in the lakes. In this study, regression analysis was used for estimating the relationships among water quality parameters measured at the Son La hydropower reservoir and the fluxes of greenhouse gas emissions from the reservoir. The regression analysis was also applied to develop regression equations predicting emissions of greenhouse gases from the lake. Results of study showed that the CO2 emission from the Son L...

  • TC_001047.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Thanh Tuan; Nguyen, Cong Vinh; Oborn, Ingrid (2008)

  • Reusing domestic wastewater for irrigation and applying biosolids as a fertiliser in crop production are common practices in peri-urban areas of Vietnam. This study investigates the effects of using domestic wastewater in field experiments on Fluvisols soils in peri-urban areas of Hanoi and Nam Dinh cities. We compared long-term (30-50 years) wastewater-irrigated rice-dominated farming systems. Using wastewater for irrigation significantly affected pH, electrical conductivity (EC), exchangeable K and Na and reverse aqua regia-digestible (Rev Aq Reg) copper (Cu), lead (Pb) and zinc (Zn) in the investigated areas compared with control plots irrigated using river water. There were no sig...

Browsing by Author Nguyen, Manh Khai

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 5 of 5
  • TC_02643.pdf.jpg
  • Article


  • Authors: Chu, Anh Dao; Pham, Manh Con; Nguyen, Manh Khai (2010)

  • Reusing domestic wastewater for irrigation is a common practice in peri -urban areas in Vietnam. This study investigates the characteristic of domestic wastewater in Hanoi City in terms of nutritive value and potential risk in using for agriculture. The wastewater samples were collected in four main drainage rivers of the City including Lu, Set, Ki m Nguu, and To Lich River during March to May 2010. We found that the wastewater of Hanoi City is seriously polluted by organic matters. The nutrient parameters were reall y high and which is suitable for agricultural irrigation. The wastewater mi ght supply...

  • TC_02612.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Quang Ha; Nguyen, Cong Vinh; Gustafsson, Jon Petter; Öborn, Ingrid (2008)

  • The application of biosolids as a fertilizerin agricultural cultivation are common practices in many countries. This study investigates the effects of such practices in field experiments on Fluvisol and Acrisol soils in peri-urban Hanoi City. We compared biosolid-fertilized vegetable/rice-dominated systems (biosolids applied as chicken manure (Acrisol in Vinh Phuc Province) or composted pig manure mixed with rice straw (Fluvisol in Ha Tay Province). The biosolids were applied at six different rates representing from 0 to 450% of the normal annual dose used by local farmers. The application of biosolids had highly significant positive effects on organic carbon (TOC%) and t...

  • TC_02600.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Thanh Tuan; Nguyen, Cong Vinh; Oborn, Ingrid  (2008)

  • Reusing domestic wastewater for irrigation and applying biosolids as a fertiliser in crop  production are common practices in peri‐urban areas of Vietnam. This study investigates the effects  of using domestic wastewater in field experiments on Fluvisols soils in peri‐urban areas of Hanoi  and Nam Dinh cities. We compared long‐term (30‐50 years) wastewater‐irrigated rice‐dominated  farming systems. Using wastewater for irrigation significantly affected pH, electrical conductivity  (EC), exchangeable K and Na and reverse aqua regia‐digestible (Rev Aq Reg) copper (Cu), lead (Pb)  and zinc (Zn) in the investigated areas compared with control plots irrigated using river water.  Th...

  • e33.2.7.pdf.jpg
  • Article


  • Authors: Nguyen, Thi The Nguyen; Pham, Van Hoang; Nguyen, Manh Khai (2017)

  • Emissions of greenhouse gases such as CO2 and CH4 from artificial reservoirs, especially wide lakes in the tropics as the Son La hydropower reservoir, are leading to global warming. CO2 and CH4 gases in hydropower reservoirs are caused by the decomposition of organic matter in the lakes. In this study, regression analysis was used for estimating the relationships among water quality parameters measured at the Son La hydropower reservoir and the fluxes of greenhouse gas emissions from the reservoir. The regression analysis was also applied to develop regression equations predicting emissions of greenhouse gases from the lake. Results of study showed that the CO2 emission from the Son L...

  • TC_001047.pdf.jpg
  • Article


  • Authors: Nguyen, Manh Khai; Pham, Thanh Tuan; Nguyen, Cong Vinh; Oborn, Ingrid (2008)

  • Reusing domestic wastewater for irrigation and applying biosolids as a fertiliser in crop production are common practices in peri-urban areas of Vietnam. This study investigates the effects of using domestic wastewater in field experiments on Fluvisols soils in peri-urban areas of Hanoi and Nam Dinh cities. We compared long-term (30-50 years) wastewater-irrigated rice-dominated farming systems. Using wastewater for irrigation significantly affected pH, electrical conductivity (EC), exchangeable K and Na and reverse aqua regia-digestible (Rev Aq Reg) copper (Cu), lead (Pb) and zinc (Zn) in the investigated areas compared with control plots irrigated using river water. There were no sig...