A new recycling material for removing phosphorus from water |
| |
| Authors: | CW Lee HB Kwon HP Jeon B Koopman |
| |
| Institution: | 1. Department of Environment Engineering, Kyungnam University, 449, Wolyoung-dong, Happo-gu, Masan, Kyungnam 631-701, Republic of Korea;2. Department of Environmental Engineering & Sciences, University of Florida, Gainesville, FL, USA;1. Shenzhen Academy of Environmental Sciences, Shenzhen 518001, China;2. School of Civil and Environmental Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518000, China;3. Huadong Engineering Corporation Limited, Hangzhou 311122, China;4. Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China;1. Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology, Sydney, Broadway, NSW 2007, Australia;2. Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Jinan 250100, PR China;3. Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan;4. Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology, District 10, Ho Chi Minh City, Viet Nam;5. Division of Environmental Engineering and Management, Ton Duc Thang University, District 7, Ho Chi Minh City, Viet Nam;1. Cyprus University of Technology, Department of Environmental Science and Technology, 95 Eirinis Str., P.O. BOX 50329, 3603, Lemesos, Cyprus;2. Cyprus University of Technology, Department of Mechanical Engineering and Materials Science and Engineering, Kitiou Kyprianou 45, 3041, Lemesos, Cyprus;3. Cyprus University of Technology, Research Unit for Nanostructured Materials Systems, Kitiou Kyprianou 36, 3041, Lemesos, Cyprus;4. Cyprus University of Technology, Cyprus International Institute for Environmental and Public Health, 95 Eirinis Str., 3041, Lemesos, Cyprus;1. Department of Environmental Science and Technology, University of Maryland, College Park, MD 20742, United States;2. University of Maryland Sea Grant Extension Program and College of Agriculture and Natural Resources, College Park, MD 20742, United States;1. College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian Province 350108, China;2. Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, P.O. Box 157, Lismore, NSW 2480, Australia |
| |
| Abstract: | In search of readily available and relatively inexpensive materials for phosphorus removal, waste oyster shell is a waste product from oyster-culturing farm and also presents a major disposal problem in itself. Activated oyster shell produced by pyrolysis at 750 °C exhibits promising performance as a suitable substance for phosphorus removal. The capacity of the activated oyster shell, in terms of equivalents of OH? per gram of material, is about 80% than that of calcium hydroxide. However, the granular nature of activated oyster shell (AOS) makes it much easier to handle than lime. This would be a very important advantage for treatment facilities that cannot afford specialized powder handling facilities necessary for lime. Another advantage of AOS is its time-release properties, which can allow it to be added to reactors intermittently and still achieve consistent phosphate precipitation. Distribution of phosphate after contact with AOS indicates that adsorption does not play a significant role in phosphate removal with AOS. Rather, it appears that the phosphate is precipitated in the presence of Ca2+ and high pH as a key mechanism. Since it is produced from a waste product of mariculture, AOS is a sustainable precipitant for phosphate removal. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
