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Al-Zawahreh K, Al-Degs Y, Barral MT, Paradelo R. Optimization of Direct Blue 71 sorption by organic rich-compost following multilevel multifactor experimental design. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103468] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Talebi SS, Javid AB, Roudbari AA, Yousefi N, Ghadiri SK, Shams M, Mousavi Khaneghah A. Defluoridationof drinking water by metal impregnated multi-layer green graphene fabricated from trees pruning waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:18201-18215. [PMID: 33410018 DOI: 10.1007/s11356-020-11743-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
A novel adsorbent with excellent adsorptive properties for fluoride was prepared through a green and cheap synthesis route. Populus caspica pruning wastes, a cheap agri-waste material, were reduced to multi-layer green graphene (MLG) and then post-modified to aluminum/iron modified multi-layer green graphene (AMLG and IMLG). Batch experiments revealed the effect of pH (3-11), contact time (0.5-12 h), and initial fluoride concentration (5-40 mg/L). The conversion of raw material to MLG increased the specific surface area about 120 times (from 4 to 475 m2/g). Furthermore, a significant improvement in zero points of charge (pHzpc) was attained for IMLG (7.1) and AMLG (8) compared with pristine MLG (4.3). Fluoride showed superior affinity to AMLG and IMLG compared with MLG. Fluoride removal increased gradually by pH from 3 to 8 and then decreased sharply up to pH 11. The study of process dynamics demonstrated the monolayer fluoride adsorption onto AMLG and IMLG controlled by the chemisorptions. The highest predicted adsorption capacities based on the Langmuir model were 31.52, 47.01, and 53.76 mg/g for MLG, IMLG, and AMLG, respectively. Considering economic and technical feasibility presents AMLG and IMLG as a promising candidate against water contamination by elevated fluoride. Graphical abstract.
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Affiliation(s)
- Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Allaah Bakhsh Javid
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ali Akbar Roudbari
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nader Yousefi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
- The environmental and occupational health research center, Shahroud University of Medical Sciences, Shahroud, Iran.
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, P.O. Box: 91735-951, Mashhad, Iran.
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering, State University of Campinas (UNICAMP), Campinas, São Paulo, 13083-862, Brazil.
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Sadeghi S, Zakeri HR, Saghi MH, Ghadiri SK, Talebi SS, Shams M, Dotto GL. Modified wheat straw-derived graphene for the removal of Eriochrome Black T: characterization, isotherm, and kinetic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:3556-3565. [PMID: 32918690 DOI: 10.1007/s11356-020-10647-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
A cost-effective and environment-benign adsorbent was prepared from an abundant agro-waste material. Wheat straw was reduced to graphene and then modified by crosslinking to epichlorohydrin. During the conversion process of wheat straw to graphene, the specific surface area increased more than 100 times (from 4 to 415 m2 g-1). The adsorption efficiency of raw wheat straw, graphene nanosheets, and modified graphene against Eriochrome Black T (EBT) were 8.0, 34.7, and 74.4%, respectively. The modified graphene was further investigated for the effect of environmental condition, i.e., pH (3 to 11), EBT concentration (25-100 mg L-1), adsorbent dosage (0.25-0.75 g L-1), contact time (5-60 min), and solution temperature (30-60 °C). The dye removal remained at a high level under a wide range of pH from 3 to 9. The EBT removal decreased from 87.3 to 54.5 by increasing dye concentration and increased from 38.2 to 85.4% by increasing adsorbent dose in the studied ranges. Dye removal also increased by mixing time from 5 to 30 min, whereas a slight drop was observed by continuing agitation up to 60 min. Conducting experiments at various temperatures revealed an endothermic process. Pseudo-first-order and pseudo-second-order models were adequate to represent the adsorption kinetics. Isotherm models suggest a multilayer adsorption of EBT molecules on heterogeneous modified graphene surface with a maximum adsorption capacity of 146.2 mg g-1. The present work demonstrated that the modified graphene obtained from available and low-cost agro-wastes could be used effectively as adsorbent against EBT from aqueous media.
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Affiliation(s)
- Shahram Sadeghi
- Environmental Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
- Spiritual Health Research Center, Research Institute for Health Development, Kurdistan University of Medical Sciences, Sanandaj, Iran
| | - Hamid Reza Zakeri
- Ferdows School of Paramedical and Health, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Hossien Saghi
- Non-Communicable Diseases Research Center, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran.
| | - Mahmoud Shams
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Guilherme Luiz Dotto
- Chemical Engineering Department, Federal University of Santa Maria, Santa Maria, RS, Brazil.
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Javid A, Roudbari A, Yousefi N, Fard MA, Barkdoll B, Talebi SS, Nazemi S, Ghanbarian M, Ghadiri SK. Modeling of chromium (VI) removal from aqueous solution using modified green-Graphene: RSM-CCD approach, optimization, isotherm, and kinetic studies. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2020; 18:515-529. [PMID: 33312580 PMCID: PMC7721790 DOI: 10.1007/s40201-020-00479-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 04/14/2020] [Indexed: 05/07/2023]
Abstract
BACKGROUND The aim of this study was to investigate the removal of Cr (VI) using Green-Graphene Nanosheets (GGN) synthesized from rice straw. METHODS Synthesis of the GGN was optimized using response surface methodology and central composite design (CCD). The effect of two independent variables including KOH-to-raw rice ash (KOH/RRA) ratio and temperature on the specific surface area of the GGN was determined. To have better removal of Cr (VI), GGN was modified using the grafting amine group method. In the Cr (VI) removal process, the effects of four independent variables including initial Cr (VI) concentration, adsorbent dosage, contact time, and initial solution pH were studied. RESULTS The results of this study showed that the optimum values of the KOH/RRA ratio and temperature for the preparation of GGN were 10.85 and 749.61 °C, respectively. The maximum amount of SSA obtained at optimum conditions for GGN was 551.14 ± 3.83 m 2 /g. The optimum conditions for Cr (VI) removal were 48.35 mg/L, 1.46 g/L, 44.30 min, and 6.87 for Cr (VI) concentration, adsorbent dosage, contact time, and pH, respectively. Based on variance analysis, the adsorbent dose was the most sensitive factor for Cr (VI) removal. Langmuir isotherm (R2 = 0.991) and Pseudo-second-order kinetic models (R2 = 0.999) were the best fit for the study results and the Q max was 138.89 mg/g. CONCLUSIONS It can be concluded that the predicted conditions from the GGN synthesis model and the optimum conditions from the Cr (VI) removal model both agreed with the experimental findings.
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Affiliation(s)
- Allahbakhsh Javid
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Aliakbar Roudbari
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Nader Yousefi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Alizadeh Fard
- Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI USA
| | - Brian Barkdoll
- Department of Civil and Environmental Engineering, Michigan Technological University, Houghton, MI USA
| | - Seyedeh Solmaz Talebi
- Department of Epidemiology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Saeed Nazemi
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Marjan Ghanbarian
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Seid Kamal Ghadiri
- Department of Environmental Health Engineering, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
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Aghajari N, Ghasemi Z, Younesi H, Bahramifar N. Synthesis, characterization and photocatalytic application of Ag-doped Fe-ZSM-5@TiO 2 nanocomposite for degradation of reactive red 195 (RR 195) in aqueous environment under sunlight irradiation. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2019; 17:219-232. [PMID: 31321045 PMCID: PMC6582101 DOI: 10.1007/s40201-019-00342-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 01/21/2019] [Indexed: 05/25/2023]
Abstract
BACKGROUND Most dyes have aromatic rings in their structures, which make them highly toxic for human being and aquatic life. Heterogeneous photodegradation using TiO2 nanoparticles is one of the most applied methods used for dye removal. The wide band gap of TiO2 nanoparticles disables its use of the visible light and thus the vast potential of sunlight. To overcome this deficiency, Ag doped TiO2 nanoparticles were loaded on Fe-ZSM-5. METHODS Fe-ZSM-5@TiO2-Ag photocatalyst was synthesized through sol-gel and hydrothermal methods to remove hazardous Reactive Red 195 (RR 195) from aqueous solution. RESULTS Pure phase of Fe-ZSM-5@TiO2-Ag with specific surface area of 332 m2/g was successfully synthesized. Formation of Ti-O-Ag functional group in the photocatalyst structure confirmed the nanocomposite form of the product. SEM and TEM images portrayed the synthesized zeolite and photocatalyst NPs in a size range of ≤100 nm with homogenous distribution of Ag doped TiO2 on Fe-ZSM-5 surface. The band-gap energy of Fe-ZSM-5@TiO2-Ag was calculated 1.97 eV at λ = 630 nm. Photocatalytic activity of the photocatalyst under natural sunlight was investigated through photodecomposition of RR 195 in an aqueous solution. The dye photodecomposition of about 98% was achieved at photocatalyst concentration of 400 mg/L, pH of 3, and dye concentration of 50 mg/L at ambient temperature after 120 min under sunlight using 0.5 ml of TiO2 and silver ammonium nitrate. The photocatalyst reusability was found significant after 5 frequent cycles. CONCLUSION The novel Ag-doped TiO2-Fe-ZSM-5 nanocomposite with sunlight sensitivity can be a promising candidate to purify wastewater containing organic pollutants.
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Affiliation(s)
- Nasrin Aghajari
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran
| | - Zahra Ghasemi
- Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Postal Code: 7916193145 Iran
| | - Habibollah Younesi
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran
| | - Nader Bahramifar
- Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran
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