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Ahmed W, Mehmood S, Mahmood M, Ali S, Shakoor A, Núñez-Delgado A, Asghar RMA, Zhao H, Liu W, Li W. Adsorption of Pb(II) from wastewater using a red mud modified rice-straw biochar: Influencing factors and reusability. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 326:121405. [PMID: 36893974 DOI: 10.1016/j.envpol.2023.121405] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/26/2023] [Accepted: 03/05/2023] [Indexed: 06/18/2023]
Abstract
Efficient environmental remediation of toxic chemicals using effective sorbents has received considerable attention recently. For the present study, the synthesis of a red mud/biochar (RM/BC) composite was performed from rice straw with the aim of achieving Pb(II) removal from wastewater. Characterization was performed by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), energy dispersive spectroscopy (EDS), Zeta potential analysis, elemental mapping, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Results showed that RM/BC had higher specific surface area (SBET = 75.37 m2 g-1) than raw biochar (SBET = 35.38 m2 g-1). The Pb(II) removal capacity (qe) of RM/BC was 426.84 mg g-1 at pH 5.0, and the adsorption data well fitted pseudo second order kinetics (R2 = 0.93 and R2 = 0.98), as well as the Langmuir isotherm model (R2 = 0.97 and R2 = 0.98) for both BC and RM/BC. Pb(II) removal was slightly hindered with the increasing strength of co-existing cations (Na+, Cu2+, Fe3+, Ni2+, Cd2+). The increase in temperatures (298 K, 308 K, 318 K) favored Pb(II) removal by RM/BC. Thermodynamic study indicated that Pb(II) adsorption onto BC and RM/BC was spontaneous and primarily governed by chemisorption and surface complexation. A regeneration study revealed the high reusability (>90%) and acceptable stability of RM/BC even after five successive cycles. These findings indicate that RM/BC evidenced special combined characteristics of red mud and biochar, hence its use for Pb removal from wastewater offers a green and environmentally sustainable approach fitting the "waste treating waste" concept.
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Affiliation(s)
- Waqas Ahmed
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China
| | - Sajid Mehmood
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China
| | - Mohsin Mahmood
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China
| | - Sehrish Ali
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Awais Shakoor
- Teagasc, Environment, Soils and Land Use Department, Johnstown Castle, Co. Wexford, Y35 Y521, Ireland
| | - Avelino Núñez-Delgado
- Department of Soil Science and Agricultural Chemistry, Engineering Polytechnic School, Universidade de Santiago de Compostela, 27002 Lugo, Spain
| | | | - Hongwei Zhao
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China
| | - Wenjie Liu
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China
| | - Weidong Li
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province, Hainan University, Haikou, 570228, China; Centerfor Eco-Environment Restoration Engineering of Hainan Province, Hainan University, Haikou, 570228, China.
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Mohagheghian A, Besharati-Givi N, Ayagh K, Shirzad-Siboni M. Mineralization of diazinon by low-cost CuO-Kaolin nanocomposite under visible light based RSM methodology: Kinetics, cost analysis, reaction pathway and bioassay. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bayuo J, Rwiza M, Abukari MA, Pelig-Ba KB, Mtei K. Modeling and optimization of independent factors influencing lead(II) biosorption from aqueous systems: A statistical approach. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Bayuo J, Rwiza M, Mtei K. Response surface optimization and modeling in heavy metal removal from wastewater-a critical review. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:351. [PMID: 35396639 DOI: 10.1007/s10661-022-09994-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
The existence of hazardous heavy metals in aquatic settings causes health risks to humans, prompting researchers to devise effective methods for removing these pollutants from drinking water and wastewater. To obtain optimum removal efficiencies and sorption capacities of the contaminants on the sorbent materials, it is normally necessary to optimize the purification technology to attain the optimum value of the independent process variables. This review discusses the most current advancements in using various adsorbents for heavy metal remediation, as well as the modeling and optimization of the adsorption process independent factors by response surface methodology. The remarkable efficiency of the response surface methodology for the extraction of the various heavy metal ions from aqueous systems by various types of adsorbents is confirmed in this critical review. For the first time, this review also identifies several gaps in the optimization of adsorption process factors that need to be addressed. The comprehensive analysis and conclusions in this review should also be useful to industry players, engineers, environmentalists, scientists, and other motivated researchers interested in the use of the various adsorbents and optimization methods or tools in environmental pollution cleanup.
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Affiliation(s)
- Jonas Bayuo
- Department of Materials Science and Engineering, The Nelson Mandela African Institution of Science and Technology, Postal Box 447, Arusha, Tanzania.
- Department of Science Education, C. K. Tedam University of Technology and Applied Sciences, Navrongo, Postal Box 24, Upper East Region, Ghana.
| | - Mwemezi Rwiza
- Department of Materials Science and Engineering, The Nelson Mandela African Institution of Science and Technology, Postal Box 447, Arusha, Tanzania
| | - Kelvin Mtei
- Department of Materials Science and Engineering, The Nelson Mandela African Institution of Science and Technology, Postal Box 447, Arusha, Tanzania
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Rahnama Haratbar P, Ghaemi A, Nasiri M. Potential of hypercrosslinked microporous polymer based on carbazole networks for Pb(II) ions removal from aqueous solutions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:15040-15056. [PMID: 34622410 DOI: 10.1007/s11356-021-16603-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
In this research, porous adsorbents of hypercrosslinked microporous polymer based on carbazole networks (HCP-CN) were synthesized for Pb(II) elimination from wastewaters. The results demonstrated that the extreme HCP-CN adsorbents utilization in wastewater treatment could remove more than 99.88% of Pb (II) ions. Furthermore, the two consumed adsorbents similarly indicated rapid adsorption kinetics, and it merely took a while to achieve adsorption equilibrium. These characteristics showed that HCP-CN adsorbent was an outstanding candidate for Pb(II) elimination from wastewater. Besides, the thermodynamic characteristics involving Gibbs free energy change (∆G0), entropy change (∆S0), and enthalpy change (∆H0) of the adsorption procedure were evaluated, and the results affirmed that the adsorption process was exothermic and spontaneous. In addition, response surface methodology (RSM) as a statistical investigation was used to optimize adsorption factors to obtain maximum adsorption capacity and investigate the interactive effect of parameters using central composite design (CCD). Optimum conditions obtained by RSM for maximum adsorption capacity of 26.02 mg/g are 35 °C, 40 mg/L, 11, 60 min, and 99.88 for temperature, initial concentration, pH, time, and removal percent, respectively. In the kinetic modeling study, the second-order model was selected as the best model. The values R2 at temperatures 35 °C, 40 °C, and 55 °C are 0.997, 0.9997, and 0.998, respectively. In the isotherm modeling, Hill model with a value R2 of 0.9766 has a superior precision compared to the other isotherm models. Also, the values of ΔH and ΔS at Pb(II) concentration of 60 mg/L are 122.622 kJ/mol and 0.463 kJ/mole K, respectively.
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Affiliation(s)
| | - Ahad Ghaemi
- School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran.
| | - Masoud Nasiri
- Department of Chemical, Petroleum and Gas Engineering, Semnan University, Semnan, Iran
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Removal Mechanisms of Slag against Potentially Toxic Elements in Soil and Plants for Sustainable Agriculture Development: A Critical Review. SUSTAINABILITY 2021. [DOI: 10.3390/su13095255] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Potentially toxic element (PTE) pollution is a major abiotic stress, which reduces plant growth and affects food quality by entering the food chain, and ultimately poses hazards to human health. Currently, the use of slag in PTE-contaminated soils has been reported to reduce PTEs and toxicity in plants. This review highlights the role of slag used as a fertilizer for better crop production and sustainable agricultural development. The application of slag increased the growth, yield, and quality of crops under PTE toxicity. The mechanisms followed by slag are the immobilization of PTEs in the soil, enhancement of soil pH, changes in the redox state of PTEs, and positive changes in soil physicochemical and biological properties under PTE toxicity. Nevertheless, these processes are influenced by the plant species, growth conditions, imposition length of stress, and type of slag used. The current review provides an insight into improving plant tolerance to PTE toxicity by slag-based fertilizer application and highlights the theoretical basis for applying slag in PTE-contaminated environments worldwide.
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