Development of vermicast from sludge and powdered oyster shell |
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| Authors: | Y.T. Kwon C.W. Lee J.H. Yun |
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| Affiliation: | 1. Área de Edafoloxía e Química Agrícola. Departamento de Bioloxía Vexetal e Ciencia do Solo. Univ. Vigo. Facultade de Ciencias, Ourense, 32004 Ourense, Spain;2. Departamento de Edafoloxía e Química Agrícola. Univ. Santiago de Compostela. Escola Politécnica Superior, campus univ. s/n, 27002 Lugo, Spain;1. Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia;2. Environmental Science Department, Faculty of Science, Port-Said University, Port-Said, Egypt;3. Zoology Department, Faculty of Science, Port-Said University, Port-Said, Egypt;1. Department of Chemical and Materials Engineering, University of Auckland, Private Bag 92019, Auckland Mail Centre, Auckland 1142, New Zealand;2. Laboratory for Nanostructured and Tuneable Materials, Department of Chemical Engineering and Centre for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom;1. School of Resources and Environmental Science, Quanzhou Normal University, 362000, Quanzhou, PR China;2. Beijing GeoEnviron Engineering & Technology, Inc., 100095, Beijing, PR China;3. Environmental Monitoring Station of Quanzhou, 362000, Quanzhou, PR China;4. Guangxi Scientific Experiment Center of Mining, Metallurgy and Environment, Guilin University of Technology, 541004, Guilin, PR China;1. Faculty of Bioengineering, Sathyabama Institute of Science and Technology, Rajiv Gandhi Salai, Chennai, 600119, Tamil Nadu, India;2. Department of Botany, Government Arts College, Salem, 636 007, Tamil Nadu, India;3. Department of Microbiology and Immunology, Institute of Biomedical Sciences, College of Health Sciences, Mekelle University, Mekelle, 1871, Ethiopia;4. Department of Biotechnology, Vinayaka Mission''s Research Foundation, Aarupadi Veedu Institute of Technology, Paiyanoor, Chennai, 600 128, Tamil Nadu, India;5. Arulmigu Meenakshi Amman College of Engineering, Kanchipuram, 604 410, Tamil Nadu, India;1. Laboratório de Processos (LaPro), Centro de Tecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil;2. Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Università di Napoli Federico II, P.leTecchio, 80, 80125 Napoli, Italy;3. Laboratório de Eletroquímica Aplicada (LEAP), Insituto de Química e Biotecnologia, Universidade Federal de Alagoas, Maceió, AL, Brazil |
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| Abstract: | Soil acidification is one of the rising land degradation issues facing world agriculture. The risk of acidification is currently being assessed as part of agriculture productivity and sustainable theme. This study was conducted to produce a new vermicomposting cast as a recycling resource derived from municipal sewage sludge and waste oyster shell. The earthworm, Eisenia Andrei, was fed under different conditions. The most suitable mixture was 77:23 w/w% of sewage sludge and waste oyster shell. Powdered oyster shell (POS) sludge blend provided a stable pH, due to its buffering capacity during vermiculture because of the Ca2+ and OH? release effect. The vermicast products fulfilled the cast standards of Korea Ministry of Environment for all the parameters such as moisture content, pH, salinity, organic carbon, TKN, Phosphate, and heavy metals. Slowly released organic matter when added to soil improves the capacity of the soil to hold nutrients for plants, improve soil aeration for roots, and improves soil drainage. This product will be an addition to already-commercialized sludge vermicast as a higher value product. |
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