Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal

Hong Ha Thi Vu, Mohd Danish Khan, Ramakrishna Chilakala, Tuan Quang Lai, Thriveni Thenepalli, Ji Whan Ahn, Dong Un Park and Jeongyun Kim
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Hong Ha Thi Vu: Center for Carbon Mineralization, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Gajeong-dong, Yuseong-gu, Daejeon 34132, Korea
Mohd Danish Khan: Resources Recycling Department, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
Ramakrishna Chilakala: Department of Bio-Based Materials, School of Agriculture and Life Science, Chungnam National University Daejeon-34132, Korea
Tuan Quang Lai: Resources Recycling Department, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
Thriveni Thenepalli: Center for Carbon Mineralization, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Gajeong-dong, Yuseong-gu, Daejeon 34132, Korea
Ji Whan Ahn: Center for Carbon Mineralization, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Gajeong-dong, Yuseong-gu, Daejeon 34132, Korea
Dong Un Park: Center for Climate Technology Cooperation, 17th Floor, Namsan Square Bldg., 173, Toegye-ro, Jung-gu, Seoul 04554, Korea
Jeongyun Kim: Center for Carbon Mineralization, Mineral Resources Division, Korea Institute of Geoscience and Mineral Resources, 124 Gwahak-ro, Gajeong-dong, Yuseong-gu, Daejeon 34132, Korea

Sustainability, 2019, vol. 11, issue 6, 1-11

Abstract: In this study, we utilized lime mud waste from paper mills to synthesize calcium hydroxide (Ca(OH) 2 ) nanoparticles (NPs) and investigate their application for the removal of phosphorus from aqueous solution. The NPs, composed of green portlandite with hexagonal shape, were successfully produced using a precipitation method at moderately high temperature. The crystal structure and characterization of the prepared Ca(OH) 2 nanoparticles were analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The effects of Ca(OH) 2 NP dosage and contact time on removal of phosphorus were also investigated. The results show that the green portlandite NPs can effectively remove phosphorus from aqueous solution. The phosphorus removal efficiencies within 10 min are 53%, 72%, 78%, 98%, and 100% with the different mass ratios of Ca(OH) 2 NPs/phosphorus (CNPs/P) of 2.2, 3.5, 4.4, 5.3, and 6.2, respectively. Due to the efficient phosphorus removal, the calcium hydroxide nanoparticles (CNPs) could be a potential candidate for this application in domestic or industrial wastewater treatment.

Keywords: calcium hydroxide; lime mud; nanoparticles; phosphorus removal (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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