A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Coupling Extracts of Plant Coagulants With Solar Disinfection Showed a Complete Inactivation of Faecal Coliforms
The small treated volume of water in polyethylene terephthalate (PET) bottles used in solar water disinfection (SODIS), and incomplete inactivation of bacteria at high water turbidity of ≥30 nephelometric turbidity units (NTU) are the major drawbacks of solar water treatment techniques. To address these problems, field experiments are conducted to inactivate faecal coliforms under natural sunlight. To assess the efficacy of large volumes, 3, 5, and 10‐L transparent plastic containers are used along with standard PET bottles (2 L) as SODIS reactors. To reduce the turbidity of the water, extracts of natural coagulants from tubers ofMaerua subcordataand seeds ofMoringa stenopetalaare used. The results revealed that the turbidity of water and volume of containers affect the efficiency of SODIS, where the highest bacterial inactivation is observed at 10 NTU and a 0.5‐L PET bottle. However, the combined water treatment experiments of coagulation with extracts of eitherM. subcordataorM. stenopetalafollowed by SODIS on turbid water (150 NTU) showed 100% reduction of faecal coliforms with 4 h of exposure. This research demonstrates that a 10‐L container filled with water can be treated combining plant extracts with SODIS. The technology can be used for provision of safe and adequate drinking water for rural communities in developing countries.
Coupling Extracts of Plant Coagulants With Solar Disinfection Showed a Complete Inactivation of Faecal Coliforms
The small treated volume of water in polyethylene terephthalate (PET) bottles used in solar water disinfection (SODIS), and incomplete inactivation of bacteria at high water turbidity of ≥30 nephelometric turbidity units (NTU) are the major drawbacks of solar water treatment techniques. To address these problems, field experiments are conducted to inactivate faecal coliforms under natural sunlight. To assess the efficacy of large volumes, 3, 5, and 10‐L transparent plastic containers are used along with standard PET bottles (2 L) as SODIS reactors. To reduce the turbidity of the water, extracts of natural coagulants from tubers ofMaerua subcordataand seeds ofMoringa stenopetalaare used. The results revealed that the turbidity of water and volume of containers affect the efficiency of SODIS, where the highest bacterial inactivation is observed at 10 NTU and a 0.5‐L PET bottle. However, the combined water treatment experiments of coagulation with extracts of eitherM. subcordataorM. stenopetalafollowed by SODIS on turbid water (150 NTU) showed 100% reduction of faecal coliforms with 4 h of exposure. This research demonstrates that a 10‐L container filled with water can be treated combining plant extracts with SODIS. The technology can be used for provision of safe and adequate drinking water for rural communities in developing countries.
Coupling Extracts of Plant Coagulants With Solar Disinfection Showed a Complete Inactivation of Faecal Coliforms
CLEAN Soil Air Water
Megersa, Moa (author) / Beyene, Abebe (author) / Ambelu, Argaw (author) / Triest, Ludwig (author)
2019-01-01
Article (Journal)
Electronic Resource
English
Rapid Detection of Faecal Coliforms in Coastal Waters
| British Library Conference Proceedings | 1993
Extended Acid Digestion for Inactivation of Fecal Coliforms
| Wiley | 2006
Regrowth of faecal coliforms and salmonellae in stored biosolids and soil amended with biosolids
| British Library Conference Proceedings | 1997