Nitrogen/palladium-codoped TiO² for efficient visible light photocatalytic dye degradation
- Kuvarega, Alex T., Krause, Rui W. M., Mamba, Bhekie B.
- Authors: Kuvarega, Alex T. , Krause, Rui W. M. , Mamba, Bhekie B.
- Date: 2011
- Subjects: Photocatalytic dye degradation , Water pollution control , Photocatalysis , Nitrogen , Palladium
- Type: Article
- Identifier: uj:5807 , ISSN 1932-7455 , http://hdl.handle.net/10210/7815
- Description: Please refer to full text to view abstract
- Full Text:
- Authors: Kuvarega, Alex T. , Krause, Rui W. M. , Mamba, Bhekie B.
- Date: 2011
- Subjects: Photocatalytic dye degradation , Water pollution control , Photocatalysis , Nitrogen , Palladium
- Type: Article
- Identifier: uj:5807 , ISSN 1932-7455 , http://hdl.handle.net/10210/7815
- Description: Please refer to full text to view abstract
- Full Text:
Vermicomposting of soybean and maize straw residues as an agro waste management initiative
- Manyuchi, Musaida Mercy, Mbohwa, Charles, Muzenda, Edison
- Authors: Manyuchi, Musaida Mercy , Mbohwa, Charles , Muzenda, Edison
- Date: 2017
- Subjects: Bio fertiliser , Earthworms , Nitrogen
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260136 , uj:27384 , Citation: Manyuchi, M.M, Mbohwa, C. & Muzenda, E. 2017. Vermicomposting of soybean and maize straw residues as an agro waste management initiative.
- Description: Abstract: In this study, maize waste and soy bean residue were vermicomposted as a way of harnessing bio products from agro waste in a bid to promote sustainability and proper waste management to bio fertilizers. Maize and soy bean residues were vermicomposted in a 9m by 1m vermicomposting bed over a period of 30 days using Eisenia Fetida earthworms at standard conditions. The physicochemical parameters of the organic waste including the organic loading (OC), nitrogen, phosphorous and potassium (NPK) content as well as trace elements such as calcium (Ca), magnesium (Mg) and sodium (Na) were determined using standard methods. The behavior of the earthworms in terms of mass and length was also quantified. Upon increase in the vermicomposting period, the OC increased by 38%, NPK composition by 50%, 50% and 35% respectively. The Ca, Mg and Na composition by 10%, 23% and 30% respectively. The earthworms mass and length increased by 60% and 20% respectively. From the results obtained, vermicomposting offers a sustainable opportunity for crop waste management to bio fertilizers.
- Full Text:
- Authors: Manyuchi, Musaida Mercy , Mbohwa, Charles , Muzenda, Edison
- Date: 2017
- Subjects: Bio fertiliser , Earthworms , Nitrogen
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/260136 , uj:27384 , Citation: Manyuchi, M.M, Mbohwa, C. & Muzenda, E. 2017. Vermicomposting of soybean and maize straw residues as an agro waste management initiative.
- Description: Abstract: In this study, maize waste and soy bean residue were vermicomposted as a way of harnessing bio products from agro waste in a bid to promote sustainability and proper waste management to bio fertilizers. Maize and soy bean residues were vermicomposted in a 9m by 1m vermicomposting bed over a period of 30 days using Eisenia Fetida earthworms at standard conditions. The physicochemical parameters of the organic waste including the organic loading (OC), nitrogen, phosphorous and potassium (NPK) content as well as trace elements such as calcium (Ca), magnesium (Mg) and sodium (Na) were determined using standard methods. The behavior of the earthworms in terms of mass and length was also quantified. Upon increase in the vermicomposting period, the OC increased by 38%, NPK composition by 50%, 50% and 35% respectively. The Ca, Mg and Na composition by 10%, 23% and 30% respectively. The earthworms mass and length increased by 60% and 20% respectively. From the results obtained, vermicomposting offers a sustainable opportunity for crop waste management to bio fertilizers.
- Full Text:
What ecotechnologies exist for recycling carbon and nutrients from domestic wastewater? A systematic map protocol
- Haddaway, Neal R., Johannesdottir, Solveig L., Piniewski, Mikołaj, Macura, Biljana
- Authors: Haddaway, Neal R. , Johannesdottir, Solveig L. , Piniewski, Mikołaj , Macura, Biljana
- Date: 2018
- Subjects: Circular economy , Energy recovery , Nitrogen
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/289962 , uj:31470 , Citation: Haddaway, N.R. et al. 2018. What ecotechnologies exist for recycling carbon and nutrients from domestic wastewater? A systematic map protocol. Haddaway et al. Environ Evid (2019) 8:1 https://doi.org/10.1186/s13750-018-0145-z
- Description: Abstract: Background: Pollution of the Baltic Sea continues to be a problem. Major terrestrial sources of nutrient emissions to the Baltic Sea are agriculture and wastewater, both major causes of eutrophication. Wastewater contains nutrients and organic matter that could constitute valuable products such as agricultural fertilizers and source of energy. With the EU’s action plan for circular economy, waste management and resource utilization is central. Thus the integration of resource recovery to wastewater management could create benefits beyond the wastewater sector. There is a growing interest in resource recovery from wastewater. However, there is no systematic overview of the literature on technologies to recover nutrients and carbon from wastewater sources done to date. Methods: This systematic map will identify a representative list of studies on ecotechnologies for reusing carbon and nutrients (nitrogen and phosphorus) from domestic wastewater, which includes e.g. sewage sludge and wastewater fractions. Searches will be performed in five bibliographic databases, one search engine and 38 specialist websites. Searches will mainly be performed in English, search for literature in specialist websites will also include Finnish, Polish and Swedish. Coding and meta-data extraction will include information on ecotechnology name and short description, reuse outcome (i.e. reuse of carbon, nitrogen and/or phosphorus), type of reuse (i.e. whether it is explicit or implicit), study country and location, latitude and longitude. All screening and coding will be done after initial consistency checking. The outcomes of this systematic map will be a searchable database of coded studies. Findings will be presented in a geo-informational system (i.e. an evidence atlas) and knowledge gaps and clusters will be visualised via heat maps.
- Full Text:
- Authors: Haddaway, Neal R. , Johannesdottir, Solveig L. , Piniewski, Mikołaj , Macura, Biljana
- Date: 2018
- Subjects: Circular economy , Energy recovery , Nitrogen
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/289962 , uj:31470 , Citation: Haddaway, N.R. et al. 2018. What ecotechnologies exist for recycling carbon and nutrients from domestic wastewater? A systematic map protocol. Haddaway et al. Environ Evid (2019) 8:1 https://doi.org/10.1186/s13750-018-0145-z
- Description: Abstract: Background: Pollution of the Baltic Sea continues to be a problem. Major terrestrial sources of nutrient emissions to the Baltic Sea are agriculture and wastewater, both major causes of eutrophication. Wastewater contains nutrients and organic matter that could constitute valuable products such as agricultural fertilizers and source of energy. With the EU’s action plan for circular economy, waste management and resource utilization is central. Thus the integration of resource recovery to wastewater management could create benefits beyond the wastewater sector. There is a growing interest in resource recovery from wastewater. However, there is no systematic overview of the literature on technologies to recover nutrients and carbon from wastewater sources done to date. Methods: This systematic map will identify a representative list of studies on ecotechnologies for reusing carbon and nutrients (nitrogen and phosphorus) from domestic wastewater, which includes e.g. sewage sludge and wastewater fractions. Searches will be performed in five bibliographic databases, one search engine and 38 specialist websites. Searches will mainly be performed in English, search for literature in specialist websites will also include Finnish, Polish and Swedish. Coding and meta-data extraction will include information on ecotechnology name and short description, reuse outcome (i.e. reuse of carbon, nitrogen and/or phosphorus), type of reuse (i.e. whether it is explicit or implicit), study country and location, latitude and longitude. All screening and coding will be done after initial consistency checking. The outcomes of this systematic map will be a searchable database of coded studies. Findings will be presented in a geo-informational system (i.e. an evidence atlas) and knowledge gaps and clusters will be visualised via heat maps.
- Full Text:
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