title: Porous Ca-based bead sorbents for simultaneous removal of SO₂, fine particulate matters, and heavy metals from pilot plant sewage sludge incineration.
abstract: In this study, a porous calcium-based sorbent was prepared for simultaneous removal of SO2, particulate matter (PM), and heavy metals generated during incineration of sewage sludge. The prepared sorbent was confirmed to have a 3-dimensional-network pore structure, a high specific surface area of 68.5m(2)/g, and gas permeability of 1.12 × 10(-10)m(2). Laboratory-scale tests indicated that there was an improvement in the performance of SO2 removal as the porosity and the specific surface area of the sorbent increased. Additionally, increasing reaction temperature led to greater SO2 removal. Meanwhile, the SL-4 and LS-3 sorbents prepared in this study were installed for operation during pilot tests treating the sewage sludge combustion gas generated by a fluidized incinerator in order to compare and evaluate their feasibility for use in industrial applications. The results showed that the reactivity between SO2 and the starting material of the sorbent (Ca(OH)2>CaCO3), as well as the high specific surface area of the sorbent, were confirmed to be critical factors that improved the performance of SO2 removal. Notably, the results confirmed that both fine PM (≤ 1 μm) and heavy metals were simultaneously removed with increasing efficiency over the time of operation.
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea.
authors.forename: Yosep
authors.initials: Y
authors.lastname: Han
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea.
authors.forename: Gukhwa
authors.initials: G
authors.lastname: Hwang
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea.
authors.forename: Donghyun
authors.initials: D
authors.lastname: Kim
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea.
authors.forename: Soyeon
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Mineral Resources and Energy Engineering, Chonbuk National University, 567, Baekje-daero, Deokjin-gu, Jeonju, Jeonbuk 561-756, Republic of Korea. Electronic address: kshjkim@jbnu.ac.kr.
authors.forename: Hyunjung
authors.initials: H
authors.lastname: Kim
mesh_terms: D000327:Adsorption; D000393:Air Pollutants / Q000032:analysis; D000397:Air Pollution / Q000517:prevention & control*; D017610:Calcium Compounds / Q000737:chemistry; D017745:Incineration; D019216:Metals, Heavy / Q000032:analysis*; D052638:Particulate Matter / Q000032:analysis; D016062:Porosity; D012722:Sewage / Q000737:chemistry*; D013458:Sulfur Dioxide / Q000032:analysis*; D013499:Surface Properties
chemical_list: D000393:Air Pollutants; D017610:Calcium Compounds; D019216:Metals, Heavy; D052638:Particulate Matter; D012722:Sewage; D013458:Sulfur Dioxide
keywords: Ca-based sorbents; Fine particulate matters; Heavy metals; SO(2); Sewage sludge incineration