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Su P, Zhao P, Wang H, Zhou K, Guo Y, Liu S, Lu H, Chen H, Zhang L, He Z, Xia M, Zhao S. Preparation and application of alkali-activated cementitious materials in solidification/stabilization of chromite ore processing residue. RSC Adv 2024; 14:19912-19921. [PMID: 38903665 PMCID: PMC11187811 DOI: 10.1039/d4ra01270d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/15/2024] [Indexed: 06/22/2024] Open
Abstract
Chromite ore processing residue (COPR) is a typical hazardous waste, which contains Cr(vi) and poses a great threat to the ecological environment and human health. In this study, solidification/stabilization (S/S) of COPR was carried out by using blast furnace slag (BFS) and fly ash (FA) to prepare alkali-activated cementitious materials (AACM). The influence of different factors (water glass modulus, liquid-solid ratio, alkali-solid content and curing temperature) on compressive strength was investigated by single-factor experiment. Additionally, solidification effect of AACM was determined according to the compressive strength and the leaching concentration of chromium (Cr(vi) and total Cr). According to the optimal conditions of the single-factor experiment, the highest compressive strength of 147.6 MPa was obtained after using the water glass modulus 1.0, liquid-solid ratio 0.28, alkali-solid content 8%, curing temperature 45 °C. The COPR was solidified in the AACM sample having highest compressive strength. The solidified body still has a good mechanical property (38.2 MPa) with 60% addition COPR. According to leaching tests, the leaching of Cr(vi) and total Cr of solidified body with 50% COPR was far lower than the limit value, which met the purpose of construction and landfill disposal. X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) analysis proved that heavy metal chromium was solidified in AACM by physical and chemical means.
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Affiliation(s)
- Pengyue Su
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Pan Zhao
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Hao Wang
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Kun Zhou
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Yicheng Guo
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Sha Liu
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Huicheng Lu
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Haiyu Chen
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Lanjun Zhang
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
| | - Ziqiang He
- Key Laboratory of Electromechanical Equipment Security in Western Complex Environment for State Market Regulation, Chongqing Special Equipment Inspection and Research Institute Chongqing 401121 China
| | - Ming Xia
- School of Environmental and Chemical Engineering, Jiangsu Ocean University Lianyungang 222005 China
- Jiangsu Institute of Marine Resources Development, Jiangsu Ocean University Lianyungang 222005 China
- Jiangsu Key Laboratory of Function Control Technology for Advanced Materials, Jiangsu Ocean University Lianyungang 222005 China
| | - Shujie Zhao
- School of Safety Science and Engineering, Anhui University of Science and Technology Huainan 232001 China
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Peng G, Zhang P, Zeng L, Yu L, Li D. Immobilization of chromium ore processing residue by alkali-activated composite binders and leaching characteristics. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27409-z. [PMID: 37162678 DOI: 10.1007/s11356-023-27409-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 04/30/2023] [Indexed: 05/11/2023]
Abstract
Chromium ore processing residue (COPR) is classified as hazardous solid waste because of the leachable Cr(VI). Cementitious materials are often used to solidify and stabilize heavy metals. However, most of them focus on the leaching concentration of particles after solidification and stabilization and lack research on leaching characteristics. This study investigated the leaching characteristics of heavy metals in three simulated environments (HJ557-2010, HJ/T299-2007, TCLP) after immobilizing COPR with composite binders. Industrial solid waste coal fly ash and lead-zinc smelting slag are used to prepare composite binders through alkali activation technology. Compressive strength, particle leaching toxicity, acid neutralization capability, and semi-dynamic leaching test are used to evaluate the performance of the solidified body. The solidified body can be applied to building materials or treated as general industrial waste. Heavy metals are mainly released from the matrix by surface washing at a low rate. The analysis results, including XRD, FTIR, and SEM-EDS, show that chemical binding and physical encapsulation are the main immobilizing mechanisms to realize the coordinated disposal of Zn and Cr(VI).
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Affiliation(s)
- Guangjun Peng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Pengpeng Zhang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Linghao Zeng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Lin Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
| | - Dongwei Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China.
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Zhang P, Zeng L, Zhang S, Li C, Li D. Solidification/stabilization of chromite ore processing residue via co-sintering with hazardous waste incineration residue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:29392-29406. [PMID: 36417072 DOI: 10.1007/s11356-022-24318-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 11/15/2022] [Indexed: 06/16/2023]
Abstract
In order to realize the harmless and resource disposal of hazardous waste incineration residue (HWIR) and chromite ore processing residue (COPR), this paper prepares glass-ceramics by HWIR. The COPR was co-sintered with the base glass of HWIR to realize the solidification and stabilization of COPR. The results shown that the single-stage sintering method has a simple process and low energy consumption, while the two-stage sintering method has better mechanical properties. Chromium in COPR may be solidified/stabilized by physical encapsulation and chemical fixation. When the content of COPR reaches 50%, the leaching concentration of Cr and Cr(VI) in the solidified body of HWIR solidified COPR (IRSC) is less than 5 mg/L, which satisfies the US EPA and CN GB5085.3 standard limits. This study achieves waste control by waste and prepares solidified bodies (IRSC) with good mechanical properties, chemical corrosion resistance, and low leaching concentration of heavy metals, which provides feasibility for its engineering application.
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Affiliation(s)
- Pengpeng Zhang
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
| | - Linghao Zeng
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
| | - Shihao Zhang
- School of Architecture and Urban Planning, Chongqing University, Chongqing, 400044, China
| | - Chuanwei Li
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China
| | - Dongwei Li
- College of Resource and Safety Engineering, Chongqing University, Chongqing, 400044, China.
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, China.
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Zeng L, Zhang P, Li J, Yu Q, Zheng Y, Li D. Study on combined technology of glutathione reduction and alkali solidification of chromium-containing sludge. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114221. [PMID: 36288638 DOI: 10.1016/j.ecoenv.2022.114221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 09/25/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Chromium-containing sludge (CCS) is a solid hazardous waste containing various heavy metals, threatening the human body and the environment. In this study, CCS was solidified/stabilized by a combined method of glutathione (GSH) prereduction of Cr(VI) and alkali-excited blast furnace slag (BFS) preparation of geopolymer/gel. To explore the prospect of glutathione treatment of solid waste and combination with solidification/stabilization technology. The appropriate dosage and initial pH value of GSH were obtained through experiments (the dosage of GSH was 0.5%, and the initial pH value was 1). The preparation parameters (content of alkali activator 13%, modulus of alkali activator 1.7, initial curing temperature 25 ℃, liquid-solid ratio 0.26) and mechanism of geopolymer/gel were studied. GSH pre-reduction technology significantly increases the maximum dosage of CCS in the solidified body, and increases the proportion of heavy metals in the residual state. The solidified product meets landfill requirements and holds promise as a building material. According to XRD, FTIR, SEM-EDS, Geopolymers/gels solidify heavy metals utilizing physical encapsulation, chemical encapsulation, charge balance, and bonding.
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Affiliation(s)
- Linghao Zeng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Pengpeng Zhang
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Jing Li
- School of Chemical and Pharmaceutical Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China
| | - Qiu Yu
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Yi Zheng
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Dongwei Li
- State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; College of Resource and Safety Engineering, Chongqing University, Chongqing 400044, China.
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Yu L, Fang L, Zhang P, Zhao S, Jiao B, Li D. The Utilization of Alkali-Activated Lead-Zinc Smelting Slag for Chromite Ore Processing Residue Solidification/Stabilization. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18199960. [PMID: 34639258 PMCID: PMC8508533 DOI: 10.3390/ijerph18199960] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/16/2021] [Accepted: 09/18/2021] [Indexed: 12/03/2022]
Abstract
Lead–zinc smelting slag (LZSS) is regarded as a hazardous waste containing heavy metals that poses a significant threat to the environment. LZSS is rich in aluminosilicate, which has the potential to prepare alkali-activated materials and solidify hazardous waste, realizing hazardous waste cotreatment. In this study, the experiment included two parts; i.e., the preparation of alkali-activated LZSS (pure smelting slag) and chromite ore processing residue (COPR) solidification/stabilization. Single-factor and orthogonal experiments were carried out that aimed to explore the effects of various parameters (alkali solid content, water glass modulus, liquid–solid ratio, and initial curing temperature) for alkali-activated LZSS. Additionally, compressive strength and leaching toxicity were the indexes used to evaluate the performance of the solidified bodies containing COPR. As a result, the highest compressive strength of alkali-activated LZSS reached 84.49 MPa, and when 40% COPR was added, the strength decreased to 1.42 MPa. However, the leaching concentrations of Zn and Cr from all the solidified bodies were far below the critical limits (US EPA Method 1311 and China GB5085.3-2007). Heavy-metal ions in LZSS and COPR were immobilized successfully by chemical and physical means, which was detected by analyses including environmental scanning electron microscopy with energy-dispersive spectrometry, Fourier transform infrared spectrometry, and X-ray diffraction.
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Affiliation(s)
- Lin Yu
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Lu Fang
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Pengpeng Zhang
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Shujie Zhao
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
| | - Binquan Jiao
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
- Correspondence: (B.J.); (D.L.)
| | - Dongwei Li
- State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China; (L.Y.); (L.F.); (P.Z.); (S.Z.)
- School of Resources and Safety Engineering, Chongqing University, Chongqing 400044, China
- Correspondence: (B.J.); (D.L.)
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Lin H, Zhang P, Zeng L, Jiao B, Shiau Y, Li D. Preparation of Glass-Ceramics via Cosintering and Solidification of Hazardous Waste Incineration Residue and Chromium-Containing Sludge. ACS OMEGA 2021; 6:23723-23730. [PMID: 34568652 PMCID: PMC8459372 DOI: 10.1021/acsomega.1c01659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Indexed: 05/10/2023]
Abstract
Residues from the incineration of hazardous wastes are classified as hazardous byproducts because they contain heavy metals. Chromium-containing sludge (CCS) is industrial sludge produced during the electroplating process and includes heavy metals, such as Cr, Pb, and Cu. These heavy metals can infiltrate natural ecosystems and cause significant environmental damage. To limit the toxicity of leached products, hazardous waste incineration residues (HWIRs) can be repurposed as raw materials for producing glass-ceramics. In this study, we designed an orthogonal experiment to optimize the heat treatment process, yielding glass-ceramics with excellent properties and realizing heavy metal solidification. The toxic characteristic leaching procedure was used to determine the leaching toxicity of the cosintered solidified heavy metals, revealing that their solidification efficiencies exceed 90%. Moreover, X-ray diffraction analysis indicates that certain heavy metals participate in the formation of heavy-metal-containing crystal lattices (FeCr2O4 and PbFe12O19), thereby reducing their leaching concentration. These results show that cosintering HWIR and CCS is an effective approach for heavy metal solidification and provides valuable insights into its utilization for producing building materials.
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Affiliation(s)
- Huirong Lin
- State
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- College
of Resource and Safety Engineering, Chongqing
University, Chongqing 400044, China
| | - Pengpeng Zhang
- State
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- College
of Resource and Safety Engineering, Chongqing
University, Chongqing 400044, China
| | - Linghao Zeng
- State
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- College
of Resource and Safety Engineering, Chongqing
University, Chongqing 400044, China
| | - Binquan Jiao
- State
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- College
of Resource and Safety Engineering, Chongqing
University, Chongqing 400044, China
| | - YanChyuan Shiau
- Deparment
of Construction Management, Chung Hua University, No. 707, Wufu Road, Sec. 2, Hsinchu 30012, Taiwan
| | - Dongwei Li
- State
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China
- College
of Resource and Safety Engineering, Chongqing
University, Chongqing 400044, China
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