1
|
da Silva TL, da Costa TB, de Carvalho Neves HS, da Silva MGC, Guirardello R, Vieira MGA. Adsorption and ion exchange of toxic metals by Brazilian clays: clay selection and studies of equilibrium, thermodynamics, and binary ion exchange modeling. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024:10.1007/s11356-024-34496-z. [PMID: 39098971 DOI: 10.1007/s11356-024-34496-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Accepted: 07/22/2024] [Indexed: 08/06/2024]
Abstract
In this study, four Brazilian clays (Bofe, Verde-lodo, commercial Fluidgel, and expanded commercial vermiculite) were evaluated for their adsorptive capacity and removal percentage in relation to different toxic metals (Ni2+, Cd2+, Zn2+, and Cu2+). The best results were obtained by expanded vermiculite, with cadmium removal reaching values of 95%. The most promising clay was modified by the sodification process, and the metal cadmium was used to evaluate the ion exchange process. The clays expanded vermiculite (EV) and VNa-sodified vermiculite were evaluated by equilibrium study at 25, 35, and 45 °C. At 25 °C, EV obtained a maximum adsorption capacity of 0.368 mmol/g and sodified vermiculite 0.480 mmol/g, which represents an improvement of 30.4% in modified clay capacity. At 45 °C, the sodified vermiculite reached 0.970 mmol/g adsorption capacity. The Langmuir, Redlich-Peterson Freundlich, and Dubinin-Raduskevich models were adjusted to the results. Langmuir provided the best fit among the models. The thermodynamic quantities (ΔS, ΔH, and ΔG) demonstrated that the process is spontaneous and endothermic and the metal is captured by physisorption and chemisorption in the studied temperature range. For the ion exchange equilibrium, the binary Langmuir and binary Langmuir-Freundlich models were adjusted to the expanded vermiculite and sodified vermiculite isotherms, respectively. Both models were predictive. Thermal analysis indicated good heat resistance even after material modification. The apparent and real densities demonstrated that after each treatment or contamination, the clayey material undergoes contraction in its structure. An improved efficiency of the adsorbent was found after sodification.
Collapse
Affiliation(s)
- Thiago Lopes da Silva
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, São Paulo, 13083-852, Brazil
| | - Talles Barcelos da Costa
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, São Paulo, 13083-852, Brazil
| | | | - Meuris Gurgel Carlos da Silva
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, São Paulo, 13083-852, Brazil
| | - Reginaldo Guirardello
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, São Paulo, 13083-852, Brazil
| | - Melissa Gurgel Adeodato Vieira
- School of Chemical Engineering, University of Campinas, Av. Albert Einstein, 500, Campinas, São Paulo, 13083-852, Brazil.
| |
Collapse
|
2
|
Su X, Zhu X, Liang Z, Bao Z, Zhang J, Guo J, Guo H. Biochemical, histological and transcriptional response of intestines in Litopenaeus vannamei under chronic zinc exposure. CHEMOSPHERE 2024; 354:141646. [PMID: 38452979 DOI: 10.1016/j.chemosphere.2024.141646] [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: 11/12/2023] [Revised: 03/01/2024] [Accepted: 03/03/2024] [Indexed: 03/09/2024]
Abstract
Zinc (Zn) is an essential trace element for the normal physiological function of aquatic organisms, but it could become toxic to organisms when the concentration increased in water. As the first line of defense, the shrimp intestines are the most susceptible organ to environmental stress. In this study, the chronic toxicity of 0 (control, IC), 0.01(IL), 0.1(IM) and 1 mg/L (IH) Zn in intestines of Litopenaeus vannamei was investigated from the perspectives of biochemical, histological and transcriptional changes after exposure for 30 days. The results showed that the intestinal tissue basement membrane is swollen in the IM and IH groups and detached in the IH group. The total antioxidant capacities (T-AOC) were reduced while the content of malondialdehyde (MDA) were increased significantly in IM and IH groups. The production of reactive oxygen species (ROS) was increased significantly in IH group. Many differentially expressed genes (DEGs) were identified in IL, IM and IH groups, respectively. GO and KEGG enrichment analyses were conducted on the DEGs to obtain the underlying biological processes and pathways. The gene modules related to the sample were identified by weighted gene co-expression network analysis (WGCNA), and genes in modules highly corelated with IH group were mainly enriched in immune related pathways. Nine DEGs were selected for validation by quantitative real time PCR (qRT-PCR) and the expression profiles of these DEGs kept a well consistent with the high-throughput data, which confirmed reliability of transcriptome results. Additionally, 10 DEGs were screened to detect the changes of expression level in different groups. All these results indicated that Zn exposure could damage the intestinal barrier, provoke oxidative stress, reduce the immune function, increase the susceptibility to bacterial infections of L. vannamei and cause inflammation, ultimately result in cell apoptosis. Our study provides more perspective on the stress response of crustacean under Zn exposure.
Collapse
Affiliation(s)
- Xianbin Su
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China
| | - Xiaowen Zhu
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, 524088, China
| | - Zhi Liang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China
| | - Zhiming Bao
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China
| | - Jiayuan Zhang
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China
| | - Jieyu Guo
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China
| | - Hui Guo
- College of Fisheries, Guangdong Ocean University, Zhanjiang 524025, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, 524088, China.
| |
Collapse
|
3
|
Rahaman MH, Islam MR, Islam R, Alam SMN, Rahman MS, Rahman MA, Begum BA. Preparation, characterization, and adsorption kinetics of graphene oxide/chitosan/carboxymethyl cellulose composites for the removal of environmentally relevant toxic metals. Int J Biol Macromol 2024; 257:128357. [PMID: 38035970 DOI: 10.1016/j.ijbiomac.2023.128357] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/02/2023]
Abstract
This study attempted to develop a low-cost and eco-friendly bio-based composite adsorbent that is highly efficient in capturing potential toxic metals. The bio-composite adsorbent was prepared using graphene oxide (GO), carboxymethyl cellulose (CMC) and chitosan (CS); and characterized using FTIR, SEM-EDX and WAXD techniques. Metal-ion concentration in an aqueous solution was measured by ICP-OES. This article reveals that the adsorption of heavy metal ions varied according to the adsorbent quantity, initial metal concentration, pH, and interaction time. The metal ions' adsorption capacity (mg/g) was observed to increase when the interaction time and metal concentration increased. Conversely, metal ions adsorption was decreased with an increase in adsorbent dosages. The effect of pH on metal ions' adsorption was ion-specific. The substantial adsorption by GO/CMC/CS composite for Co2+, CrO42-, Mn2+ and Cd2+, had the respective values of 43.55, 77.70, 57.78, and 91.38 mg/g under acidic conditions. The metal ions experimental data were best fitted with pseudo-second-order (PSO) kinetics, and Freundlich isotherm model (except Co2+). The separation factors (RL) value in the present investigation were found between 0 and 1, meaning that the metal ions adsorption onto GO/CS/CMC composite is favorable. The RL and sorption intensity (1/n) values fitted well to the adsorption isotherm.
Collapse
Affiliation(s)
- Md Hafezur Rahaman
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia 7003, Bangladesh.
| | - Md Rakibul Islam
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia 7003, Bangladesh
| | - Rafiquel Islam
- Department of Applied Chemistry and Chemical Engineering, Islamic University, Kushtia 7003, Bangladesh
| | - S M Nur Alam
- Department of Chemical Engineering, Jashore University of Science and Technology, Jashore 7408, Bangladesh
| | - Md Safiur Rahman
- Atomic Energy Centre (AECD) Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh
| | - Md Aminur Rahman
- Department of Public Health Engineering, Zonal Laboratory, Khulna 9100, Bangladesh
| | - Bilkis A Begum
- Atomic Energy Centre (AECD) Bangladesh Atomic Energy Commission, Dhaka 1000, Bangladesh
| |
Collapse
|
4
|
Mokokwe G, Letshwenyo MW. Investigation of clay brick waste for the removal of copper, nickel and iron from aqueous solution: batch and fixed - bed column studies. Heliyon 2022; 8:e09963. [PMID: 35874057 PMCID: PMC9304740 DOI: 10.1016/j.heliyon.2022.e09963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 04/09/2022] [Accepted: 07/12/2022] [Indexed: 11/10/2022] Open
Abstract
The adsorption of copper, iron and nickel ions from an aqueous solution using Makoro granite clay brick waste through batch and fixed – bed column modes was investigated. The adsorbent was characterised using X-Ray Fluorescence, X-Ray Diffraction (XRD), Thermogravimetric Analysis, and Scanning Electron Microscopy (SEM). XRD results revealed crystalline peaks of Quartz (51.28 %) and mullite (23.40%) in fresh and loaded adsorbent with unnotable changes before and after adsorption. SEM images indicate the presence of micro pores and irregularly distributed surfaces. Batch kinetic maximum adsorption capacities for iron, copper, and nickel are 7.60, 6.70 and 6.20 mg g−1 media respectively with 60 min as the optimum time. The maximum adsorption capacities at adsorbent dosage of 5 g L−1 were 10.0, 7.60 and 7.20 mg L−1 for iron, copper and nickel ions. The corresponding adsorption capabilities from the fixed-bed column reactor were 2.23, 2.22 and 0.74 mg g−1 media respectively. The thermodynamics parameters of enthalpy change (ΔH) were 5.21, 9.32 and 5.22 kJ mol−1 respectively for Copper, iron and nickel ions and the corresponding entropy change (ΔS) were -0.04, -0.05 and -0.03 kJmol−1K−1respectively and the process being non-spontaneous and exothermic. Thomas and Yoon-Nelson models yielded similar low coefficient of determination (R2) values (0.06 and 0.07) for copper and iron ions. Further investigations such as the use of real wastewater, competition of anions and further media characterisation and modifications are recommended.
Collapse
Affiliation(s)
- Gobusaone Mokokwe
- Botswana International University of Science and Technology, Faculty of Engineering and Technology, Botswana.,Department of Civil and Environmental Engineering, Private Bag 16, Palapye, Botswana
| | - Moatlhodi Wise Letshwenyo
- Botswana International University of Science and Technology, Faculty of Engineering and Technology, Botswana.,Department of Civil and Environmental Engineering, Private Bag 16, Palapye, Botswana
| |
Collapse
|
5
|
Alharbi NK, Al-Zaban MI, Albarakaty FM, Abdelwahab SF, Hassan SHA, Fawzy MA. Kinetic, Isotherm and Thermodynamic Aspects of Zn 2+ Biosorption by Spirulina platensis: Optimization of Process Variables by Response Surface Methodology. Life (Basel) 2022; 12:life12040585. [PMID: 35455076 PMCID: PMC9027641 DOI: 10.3390/life12040585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/10/2022] [Accepted: 04/11/2022] [Indexed: 02/05/2023] Open
Abstract
The aim of this study was to assess the efficiency of Spirulina platensis for removing Zn2+ ions from the aqueous solutions. The optimized conditions of 4.48 g/L algal dose, pH of 6.62 and initial zinc concentration of 29.72 mg/L obtained by response surface methodology were employed for Zn2+ biosorption by S. platensis and up to 97.90% Zn2+ was removed, showing that there is a favorable harmony between the experimental data and model predictions. Different kinetic and equilibrium models were used to characterize the biosorption manner of Spirulina as a biosorbent. The kinetic manner of Zn2+ biosorption was well characterized by the pseudo-second-order, implying that the adsorption process is chemical in nature. The Langmuir and Dubinin-Radushkevich isotherm models were best fit to the equilibrium data. The maximum adsorption capacity of the Langmuir monolayer was 50.7 mg/g. Furthermore, the thermodynamic analysis revealed that Zn2+ biosorption was endothermic, spontaneous and feasible. As a result of biosorption process, FTIR, SEM, and EDX investigations indicated noticeable alterations in the algal biomass's properties. Therefore, the dried Spirulina biomass has been shown to be cost-effective and efficient for removing the heavy metals, particularly zinc ions from wastewater, and the method is practicable, and environmentally acceptable.
Collapse
Affiliation(s)
- Nada K. Alharbi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (N.K.A.); (M.I.A.-Z.)
| | - Mayasar I. Al-Zaban
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia; (N.K.A.); (M.I.A.-Z.)
| | - Fawziah M. Albarakaty
- Department of Biology, Faculty of Applied Science, Umm Al-Qura University, P.O. Box 715, Makkah Al Mukarramah 21955, Saudi Arabia;
| | - Sayed F. Abdelwahab
- Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Sedky H. A. Hassan
- Department of Biology, College of Science, Sultan Qaboos University, Muscat 123, Oman;
- Department of Botany and Microbiology, Faculty of Science, New Valley University, El-Kharga 72511, Egypt
| | - Mustafa A. Fawzy
- Biology Department, Faculty of Science, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
- Correspondence: ; Tel.: +966-669594732248
| |
Collapse
|
6
|
Samanta M, Roychowdhury S, Mitra D. Studies on sorption kinetics and sorption isotherm for pervaporative separation of benzene from model pyrolysis gasoline using insitu nano silver/polyvinyl alcohol membrane. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:1397-1408. [PMID: 34852721 DOI: 10.1080/10934529.2021.2002094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Pyrolysis gasoline (Py gas) is used as an octane enhancer of gasoline as it is rich in aromatics. However, removal of carcinogenic benzene from Py gas before blending with gasoline is important to meet the fuel specifications. The main focus of this present study is to determine the sorption kinetics and sorption isotherm of a fabricated insitu nano silver/polyvinyl alcohol (insitu nano Ag/PVA) membrane for pervaporative separation of benzene from model Py gas [mixture of benzene (aromatic) and 1-octene (aliphatic)]. The thickness, surface morphological structure (Atomic Force Microscopy) and degree of swelling of the fabricated membrane were determined. The highest pervaporation separation index achieved for the selected system was 14.259 kg/m2/h at 303 K, with 30 volume% benzene in model Py gas using a downstream pressure of 1 mm of Hg. The sorption kinetics of benzene in insitu nano Ag/PVA membrane obeyed the Elovich model while the Temkin isotherm model fitted the experimental data of the chosen system most accurately.
Collapse
Affiliation(s)
- Monalisha Samanta
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| | - Sayan Roychowdhury
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| | - Debarati Mitra
- Department of Chemical Technology, University of Calcutta, Kolkata, India
| |
Collapse
|
7
|
Brazdis RI, Fierascu I, Avramescu SM, Fierascu RC. Recent Progress in the Application of Hydroxyapatite for the Adsorption of Heavy Metals from Water Matrices. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6898. [PMID: 34832297 PMCID: PMC8618790 DOI: 10.3390/ma14226898] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 12/27/2022]
Abstract
Wastewater treatment remains a critical issue globally, despite various technological advancements and breakthroughs. The study of different materials and technologies gained new valences in the last years, in order to obtain cheap and efficient processes, to obtain a cleaner environment for future generations. In this context, the present review paper presents the new achievements in the materials domain with highlights on apatitic materials used for decontamination of water loaded with heavy metals. The main goal of this review is to present the adsorptive removal of heavy metals using hydroxyapatite-based adsorbents, offering a general overview regarding the recent progress in this particular area. Developing the current review, an attempt has been made to give appropriate recognition to the most recent data regarding the synthesis methods and targeted pollutants, including important information regarding the synthesis methods and precursors, morphological characteristics of the adsorbent materials and effectiveness of processes.
Collapse
Affiliation(s)
- Roxana Ioana Brazdis
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| | - Irina Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania;
- Faculty of Horticulture, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania
| | - Sorin Marius Avramescu
- Research Center for Environmental Protection and Waste Management, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
- Department of Organic Chemistry, Biochemistry and Catalysis, Faculty of Chemistry, University of Bucharest, 90-92 Soseaua Panduri, 050663 Bucharest, Romania
| | - Radu Claudiu Fierascu
- National Institute for Research & Development in Chemistry and Petrochemistry—ICECHIM, 060021 Bucharest, Romania;
- Department of Science and Engineering of Oxide Materials and Nanomaterials, University “Politehnica” of Bucharest, 011061 Bucharest, Romania
| |
Collapse
|
8
|
Multivariate Optimization of Pb 2+ Adsorption onto Ethiopian Low-Cost Odaracha Soil Using Response Surface Methodology. Molecules 2021; 26:molecules26216477. [PMID: 34770886 PMCID: PMC8588123 DOI: 10.3390/molecules26216477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 11/18/2022] Open
Abstract
Lead pollution is a severe health concern for humankind. Utilizing water contaminated with lead can cause musculoskeletal, renal, neurological, and fertility impairments. Therefore, to remove lead ions, proficient, and cost-effective methods are imperative. In this study, the Odaracha soil which is traditionally used by the local community of the Saketa District was used as a novel low-cost technology to adsorb lead ions. Odaracha adsorbent was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The adsorption process followed the batch adsorption experiment. The response surface method was implemented to derive the operating variables’ binary interaction effect and optimize the process. According to the study’s experimental result, at optimum experimental conditions Odaracha adsorbent removes 98.17% of lead ions. Based on the result of the central composite design model, the Pb2+ ion removal efficiency of Odaracha was 97.193%, indicating an insignificant dissimilarity of the actual and predicted results. The coefficient of determination (R2) for Pb2+ was 0.9454. According to the factors’ influence indicated in the results of the central composite design model, all individual factors and the interaction effect between contact time and pH has a significant positive effect on lead adsorption. However, other interaction effects (contact time with dose and pH with dose) did not significantly influence the removal efficiency of lead ions. The adsorption kinetics were perfectly fitted with a pseudo-second-order model, and the adsorption isotherm was well fitted with the Freundlich isotherm model. In general, this study suggested that Odaracha adsorbent can be considered a potential adsorbent to remove Pb2+ ions and it is conceivable to raise its effectiveness by extracting its constituents at the industrial level.
Collapse
|
9
|
Selmi A, Khiari R, Snoussi A, Bouzouita N. Analysis of Minerals and Heavy Metals Using ICP-OES and FTIR Techniques in Two Red Seaweeds (Gymnogongrus griffithsiae and Asparagopsis taxiformis) from Tunisia. Biol Trace Elem Res 2021; 199:2342-2350. [PMID: 32808067 DOI: 10.1007/s12011-020-02335-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
Abstract
In this study, the mineral and heavy metals (arsenic (As), cadmium (Cd), copper (Cu), iron (Fe), mercury (Hg), potassium (K), manganese (Mn), sodium (Na), phosphorus (P), and lead (Pb)) in two red Tunisian seaweeds Gymnogongrus griffithsiae (G. griffithsiae) and Asparagopsis taxiformis (A. taxiformis), were evaluated. Mineral and trace element analyses were achieved using inductively coupled plasma optical emission spectrometry (ICP-OES). Fourier transform infrared (FTIR) spectroscopy was used to predict the major functional groups that would be implicated in the seaweeds mineral uptake. Our results showed that the studied A. taxiformis species had much higher mineral and heavy metal concentrations than G. griffithsiae. Na (200.60 mg/kg) was the most abundant element followed by K (137.84 mg/kg) > P (35.93 mg/kg) for A. taxiformis species. However, only Na (165.23 mg/kg) and P (51.19 mg/kg) were detected in G. griffithsiae alga. As regards heavy and toxic metals, allowable concentrations have been found in both seaweeds. The concentration ranges for the most undesirable heavy metals were as follows: Pb (0.39-0.51 mg/kg), As (0.11-0.40 mg/kg), Cd (0.01-0.02 mg/kg), and Hg (0.00-0.02 mg/kg). According to FTIR analysis, the major functional groups present in the studied seaweeds were carboxyl, hydroxyl, sulfate, and phosphate groups that are considered as excellent binding sites for metal retention.
Collapse
Affiliation(s)
- Aida Selmi
- Higher School of Food Industries of Tunis (ESIAT), University of Carthage, 58 Avenue Alain Savary, 1003, Tunis El Khadra, Tunisia.
- Laboratory of Organic and Structural Chemistry, Faculty of Sciences of Tunis (FST) El Manar, Campus Universitaire El-Manar, 2092, El Manar Tunis, Tunisia.
| | - Ramla Khiari
- Higher School of Food Industries of Tunis (ESIAT), University of Carthage, 58 Avenue Alain Savary, 1003, Tunis El Khadra, Tunisia
- Laboratory of Wind Energy Management and Waste Energy Recovery, Research and Technology Center of Energy (CRTEn), B.P. N°95, 2050, Hammam-Lif, Tunisia
| | - Ahmed Snoussi
- Higher School of Food Industries of Tunis (ESIAT), University of Carthage, 58 Avenue Alain Savary, 1003, Tunis El Khadra, Tunisia
- Laboratory of Organic and Structural Chemistry, Faculty of Sciences of Tunis (FST) El Manar, Campus Universitaire El-Manar, 2092, El Manar Tunis, Tunisia
| | - Nabiha Bouzouita
- Higher School of Food Industries of Tunis (ESIAT), University of Carthage, 58 Avenue Alain Savary, 1003, Tunis El Khadra, Tunisia
- Laboratory of Organic and Structural Chemistry, Faculty of Sciences of Tunis (FST) El Manar, Campus Universitaire El-Manar, 2092, El Manar Tunis, Tunisia
| |
Collapse
|
10
|
Ezeonuegbu BA, Machido DA, Whong CM, Japhet WS, Alexiou A, Elazab ST, Qusty N, Yaro CA, Batiha GES. Agricultural waste of sugarcane bagasse as efficient adsorbent for lead and nickel removal from untreated wastewater: Biosorption, equilibrium isotherms, kinetics and desorption studies. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2021; 30:e00614. [PMID: 33912404 PMCID: PMC8063741 DOI: 10.1016/j.btre.2021.e00614] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 11/30/2022]
Abstract
The aim of this study was to evaluate the removal of Pb (II) and Ni (II) from untreated waste water using sugarcane bagasse and possible desorption of the metal ions from the adsorbent for effective re-use. The effects of pH (4-6), temperature (30-70 °C), contact time (30-150 min) and adsorbent dosage (0.3-0.7 g) were examined. Optimum conditions for the removal efficiencies of Pb (89.31 %) and Ni (96.33 %) were pH, 6.0; temperature, 30 °C; contact time, 90 min. and adsorbent dosage, 0.5 g. The maximum monolayer adsorption capacities of Pb (II) and Ni (II) were 1.61 mg/g and 123.46 mg/g respectively, by fitting the equilibrium data to the Langmuir isotherm model. Freundlich isotherm and pseudo second order kinetic models were best fitted for Pb (II) and Ni (II) uptake. Desorption of the metal ions from the metal-loaded bagasse was best performed by HNO3 with removal efficiency of 85.2 %. Therefore, sugarcane bagasse has a high potential for removal of heavy metals from waste water and can be re-used at any time after desorption without losing its efficiency.
Collapse
Affiliation(s)
| | | | | | | | - Athanasios Alexiou
- Novel Global Community Educational Foundation, Australia and AFNP Med, Austria
| | - Sara T. Elazab
- Department of Pharmacy, Faculty of Veterinary Medicine, Mansoura University, Mansoura 33516, Egypt
| | - Naeem Qusty
- Medical Laboratories Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, Mecca, Saudi Arabia
| | - Clement Ameh Yaro
- Department of Animal and Environmental Biology, University of Uyo, Akwa Ibom State, Nigeria
| | - Gaber El-Saber Batiha
- Department of Pharmacology and Therapeutics, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22511, AlBeheira, Egypt
| |
Collapse
|
11
|
Design of PAMAM grafted chitosan dendrimers biosorbent for removal of anionic dyes: Adsorption isotherms, kinetics and thermodynamics studies. Int J Biol Macromol 2021; 177:306-316. [PMID: 33621567 DOI: 10.1016/j.ijbiomac.2021.02.118] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/13/2021] [Accepted: 02/15/2021] [Indexed: 01/19/2023]
Abstract
PAMAM grafted chitosan as biocompatible adsorbent was synthesized through Michael addition of methyl acrylate followed by amidation of ethylenediamine on the chitosan backbone. Then, the adsorption capacity of bioadsorbents were assessed by employing two anionic dyes. The adsorption experiments were carried out using a batch adsorption system. The influence of various operational variables such as different PAMAM generations, pH, adsorbent dosage, contact time, initial dye concentration and temperature on the maximum adsorption capacity (qm) were investigated. The adsorbent consists of second generation of PAMAM (CS-PAMAM G2) demonstrated high removal efficiency for both dyes. The maximum adsorption capacity of CS-PAMAM G2 for Congo Red at certain operational conditions was 559.3 mg/g; while the maximum adsorption capacity for Amido Black 10B at certain operational conditions was 489.8 mg/g; which revealed endothermic and exothermic nature of adsorption process for Congo Red and Amido Black 10B, respectively. These results were then well confirmed by thermodynamics studies. Also, kinetic studies showed that the dye adsorption process followed a pseudo-second-order kinetic model. Moreover, among various applied isotherms, the experimental data were well-fitted by Sips model. Consequently, CS-PAMAM G2 showed superior potential for the removal of dyes from aqueous phase.
Collapse
|
12
|
Li J, Liu Y, Campos LC, Coppens MO. Increased E. coli bio-adsorption resistance of microfiltration membranes, using a bio-inspired approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:141777. [PMID: 32871317 DOI: 10.1016/j.scitotenv.2020.141777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/15/2020] [Accepted: 08/16/2020] [Indexed: 06/11/2023]
Abstract
Cells have inherent anti-fouling properties. The mechanisms underpinning these natural properties inform the design of an anti-biosorption coating for a polyethersulfone microfiltration membrane, which includes polydopamine and chitosan layers. This tri-layered membrane is created using quick and easy synthesis method. Its ability to resist bio-adsorption and membrane extracellular polymeric substances (EPS) formation is investigated using the bacterium E. coli (ATCC 11775, 1.5 × 107 CFU/mL). In addition, the proliferative bio-adsorption process is explored on the microfiltration membrane surface, using natural water under static and shaken conditions, while monitoring the bio-adsorption kinetics and EPS dynamic changes. The characterization results show that the modification by polydopamine and chitosan change the membrane surface morphology and increase its hydrophilicity. After 10 min dipping in 5 g/L chitosan solution, the pure water flux of the modified membrane is 5469 ± 30 L/(m2·h) (0.2 bar) and the contact angle decreases to 36.7 ± 1.0°, compared with 9889 ± 23 L/(m2·h) (0.2 bar) and 60.3 ± 1.5° for the unmodified polyethersulfone membrane, respectively. In proliferative bio-adsorption tests, the modified membrane is shown to decrease bio-adsorption by 0.4-2.3 orders of magnitude. However, no antimicrobial function is observed, probably due to the alkaline environment and insufficient functional amino groups. A series of linear and non-linear kinetic models is applied to fit the proliferative bio-adsorption process. The pseudo-second-order model is found to describe the proliferative bio-adsorption process best. Neither total organic carbon (TOC) nor protein is detected on the modified membrane surface. In contrast, on the unmodified PES membrane the ratios of protein/TOC (%), TOC/abundance ((μg/cm2)/CFU (log)) and protein/abundance ((μg/cm2)/CFU(log)) are 10%-16%, 0.17-0.28 and 0.02-0.04, respectively. No significant difference (p > 0.05) is found between static and shaken conditions. All these results point to improved anti-biosorption properties for water treatment applications, encouraging further studies on this membrane.
Collapse
Affiliation(s)
- Jianan Li
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK
| | - Yanan Liu
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK
| | - Luiza C Campos
- Department of Civil, Environmental & Geomatic Engineering, University College London, London WC1E 6BT, UK
| | - Marc-Olivier Coppens
- Department of Chemical Engineering, Centre for Nature-Inspired Engineering, University College London, London WC1E 7JE, UK.
| |
Collapse
|
13
|
Insights into methyl orange adsorption behavior on a cadmium zeolitic-imidazolate framework Cd-ZIF-8: A joint experimental and theoretical study. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2020.11.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
14
|
Mahmoud EN, Fayed FY, Ibrahim KM, Jaafreh S. Removal of Cadmium, Copper, and Lead From Water Using Bio-Sorbent From Treated Olive Mill Solid Residue. ENVIRONMENTAL HEALTH INSIGHTS 2021; 15:11786302211053176. [PMID: 34707362 PMCID: PMC8543703 DOI: 10.1177/11786302211053176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/24/2021] [Indexed: 05/10/2023]
Abstract
Olive Mill Solid Residue (OMSR) can be utilized as a bio-sorbent in wastewater treatment. Even though several studies on OMSR as a bio-sorbent were carried out, there is still a need to investigate a simple and relatively inexpensive OMSR treatment that increases pollutant removal. In this study; OMSR is used in batch experiments to remove toxic heavy metals from aqueous solutions including Cd2+, Cu2+, and Pb2+ ions. The effect of OMSR treatment (untreated; OMSR-U, treated with n-hexane; OMSR-H, and treated with water; OMSR-W) was investigated by chemical oxygen demand and cation exchange capacity. It was confirmed by both tests that OMSR-W was the best treatment. The same result was re-confirmed by batch uptake experiments of the heavy metal ions. Using OMSR-W as a bio-sorbent; the effect of several parameters such as pH, contact time, bio-sorbent concentration, metal ions concentration, and the presence of other metal species were studied to figure their influence on the metal ions uptake. The optimum conditions for single metal systems were found to occur at pH 5.5, an initial metal concentration of 50 mg/L, a shaking time of 60 minutes, a bio-sorbent concentration of 20 g/L. In binary metal ions solutions; Cd2+ uptake was increased in presence of Cu2+ or Pb2+. However, the uptake of Cu2+ and Pb2+ was decreased in presence of other metals. The equilibrium sorption data for single metal systems were described by the Langmuir isotherm model. The highest value of maximum uptake was found for Pb2+ (4.587 mg/g) followed by Cd2+ (4.525 mg/g) and Cu2+ (4.367 mg/g). These results show that OMSR-W, which has a very low economical value, could be used for the treatment of wastewater contaminated with heavy metals.
Collapse
Affiliation(s)
- Enas N Mahmoud
- Department of Chemistry, Faculty of
Science, The Hashemite University, Zarqa, Jordan
| | - Fidaa’ Y Fayed
- Department of Earth Sciences and
Environment, Prince El-Hassan bin Talal Faculty for Natural Resources and
Environment, The Hashemite University, Zarqa, Jordan
| | - Khalil M Ibrahim
- Department of Earth Sciences and
Environment, Prince El-Hassan bin Talal Faculty for Natural Resources and
Environment, The Hashemite University, Zarqa, Jordan
| | - Sawsan Jaafreh
- Department of Chemistry, Faculty of
Science, The Hashemite University, Zarqa, Jordan
- Sawsan Jaafreh, Department of Chemistry,
Faculty of Science, The Hashemite University, P.O. Box 330127, Zarqa 13133,
Jordan.
| |
Collapse
|
15
|
Bisiriyu IO, Meijboom R. Adsorption of Cu(II) ions from aqueous solution using pyridine-2,6-dicarboxylic acid crosslinked chitosan as a green biopolymer adsorbent. Int J Biol Macromol 2020; 165:2484-2493. [DOI: 10.1016/j.ijbiomac.2020.10.150] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 11/24/2022]
|
16
|
Photochemical Oxidation Process of Copper from Electroplating Wastewater: Process Performance and Kinetic Study. Processes (Basel) 2020. [DOI: 10.3390/pr8101276] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
An investigation of the process of ozone combined with ultraviolet radiation has been carried out in order to establish the kinetics for photochemical oxidation of copper (Cu) from electroplating wastewater. The effects of operating parameters, including initial Cu concentration, ozone dosage, UV irradiation intensity, and pH value on the photochemical oxidation of Cu have been studied comprehensively. The Cu concentration during the reaction was identified using atomic absorption spectroscopy (AAS) method. The solid product was analyzed using X-ray diffraction (XRD) and scanning electron microscope–energy-dispersive X-ray (SEM–EDX) methods. It was found that the UV-Ozone process has high performance on Cu removal compared to UV and Ozone processes due to the high production rate of HO• radicals. It was also found that the solid product from the UV-Ozone process was CuO monoclinic crystal phase. The initial Cu concentration, ozone dosage, and pH value were significantly affected the Cu removal efficiency. On the other hand, the UV irradiation intensity was not significant; however, it has responsibility in promoting the ozone photolysis. The kinetics model for the photochemical oxidation of Cu was established following the first-order kinetic model. Furthermore, the reaction mechanism was also developed.
Collapse
|
17
|
Desoky ESM, Merwad ARM, Semida WM, Ibrahim SA, El-Saadony MT, Rady MM. Heavy metals-resistant bacteria (HM-RB): Potential bioremediators of heavy metals-stressed Spinacia oleracea plant. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 198:110685. [PMID: 32387845 DOI: 10.1016/j.ecoenv.2020.110685] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/19/2020] [Accepted: 04/26/2020] [Indexed: 06/11/2023]
Abstract
Microorganism technologies can provide a potential alternative to traditional methods of removing heavy metals to conserve agricultural soils. This study aimed to identify and characterize heavy metals-resistant bacteria (HM-RB) isolated from industry-affected soil and their desired impact as bioremediators of heavy metals-stressed spinach plants. Three of 135 isolates were selected based on a high level of resistance to heavy metals. Based on morphological and biochemical characteristics, the selected isolates were identified as Bacillus subtilis subsp. spizizenii DSM 15029 T DSM (MA3), Paenibacillus jamilae DSM 13815 T DSM (LA22), or Pseudomonas aeruginosa DSM 1117 DSM (SN36). Experiments were implemented to investigate the three isolated HM-RB ability on improving attributes of growth, physio-biochemistry, and components of the antioxidant defense system of spinach plant exposed to the stress of cadmium (Cd2+; 2 mM), lead (Pb2+; 2 mM) or 2 mM Cd2++2 mM Pb2+. Compared to control, Cd2+ or Pb2+ stress markedly lowered plant fresh and dry weights, leaf contents of chlorophylls and carotenoids, rates of transpiration (Tr), net photosynthesis (Pn) and stomatal conductance (gs), relative water content (RWC), and membrane stability index (MSI). In contrast, contents of α.tochopherol (α.TOC), ascorbic acid (AsA), glutathione (GSH), proline, soluble sugars, Cd2+, and Pb2+, as well as activities of enzymatic and non-enzymatic antioxidants were markedly elevated. The application of HM-RB promoted the tolerance to heavy metal stress in spinach plants by improving Tr, Pn, gs, RWC, and MSI, while activities of enzymatic and non-enzymatic antioxidants were suppressed. These results reflected positively in promoting plant growth under heavy metal stress. Therefore, the application of HM-RB as potential bioremediators may be a promising strategy for promoting plant growth and productivity under heavy metal stress.
Collapse
Affiliation(s)
- El-Sayed M Desoky
- Botany Department, Faculty of Agriculture, Zagazig University, 44511, Zagazig, Egypt
| | - Abdel-Rahman M Merwad
- Soil Science Department, Faculty of Agriculture, Zagazig University, 44511, Zagazig, Egypt
| | - Wael M Semida
- Horticulture Department, Faculty of Agriculture, Fayoum University, 63514, Fayoum, Egypt
| | - Seham A Ibrahim
- Botany Department, Faculty of Agriculture, Zagazig University, 44511, Zagazig, Egypt
| | - Mohamed T El-Saadony
- Microbiology Department, Faculty of Agriculture, Zagazig University, 44511, Zagazig, Egypt
| | - Mostafa M Rady
- Botany Department, Faculty of Agriculture, Fayoum University, 63514, Fayoum, Egypt.
| |
Collapse
|
18
|
GÖKIRMAK SÖĞÜT E, ÇALIŞKAN KILIÇ N. Equilibrium and Kinetic Studies of a Cationic Dye Adsorption Onto Raw Clay. JOURNAL OF THE TURKISH CHEMICAL SOCIETY, SECTION A: CHEMISTRY 2020. [DOI: 10.18596/jotcsa.657621] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
|
19
|
Mukherjee A, Sarkar S, Parvin R, Bera D, Roy U, Gachhui R. Remarkably high Pb 2+ binding capacity of a novel, regenerable bioremediator Papiliotrema laurentii RY1: Functional in both alkaline and neutral environments. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110439. [PMID: 32182528 DOI: 10.1016/j.ecoenv.2020.110439] [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: 09/02/2019] [Revised: 02/13/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
The ability of P. laurentii strain RY1 to remediate lead (Pb2+) from water was investigated in batch and column studies. The lead removal ability of non-viable biomass, non-viable biomass immobilised on agar-agar (biobeads) and agar-agar at different pH was compared in batch studies. It was found that among the three, biobeads have maximum ability to remove Pb2+ followed by biomass and agar-agar beads. Maximum and almost equal lead removal by biobeads was observed at both neutral and alkaline pH making it a novel and more applicable bioremediator as all other reported bioremediators have a single pH for optimum activity. Studies were performed to determine the optimum conditions for lead removal from aqueous solutions for biobeads. The physical and chemical characterization of the biobeads before and after Pb2+ biosorption was done by using S.E.M. and F.T.I.R. respectively. The adsorption of Pb2+ on biobeads obeyed the Langmuir adsorption isotherm and pseudo first order kinetics. These mean that the Pb2+ binding sites are identical, located on the surface of the adsorbant and the rate of Pb2+ removal from aqueous solution is directly proportional to the number of Pb2+ binding sites on the biobeads. The thermodynamics of the biosorption process is also investigated. The binding capacity of the biobeads in batch study was found to be 52.91mg/gm which is higher in comparison to other reported yeast bioremediators. The used biobeads can be desorbed using 0.1(M) CaCl2. The desorbed biobeads can be used subsequently for several cycles of lead removal making it cost-effective. Column studies were also performed for biobeads with the help of Thomas model for examining its suitability for industrial application. Maximum specific lead uptake of the biobeads when applied in the column was found to be 58.26mg/gm which being promising makes it suitable for application in industries involved in the treatment of wastewater contaminated with high amounts of lead. The high mass transfer co-efficient indicate that small sized column can be used effectively to remove high amounts of lead which makes the bioremediation process by the biobeads more economical and advantageous for industrial application. Several factors like effectiveness of the biobeads in Pb2+removal at both neutral and alkaline pH, reusability, high mass transfer co-efficient, regenerability and high binding capacity makes it a novel versatile, cost-effective and high utility bioremediator.
Collapse
Affiliation(s)
- Avishek Mukherjee
- Department of Life Science and Biotechnology, Jadavpur University, 188,Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Soumyadev Sarkar
- Division of Biology, Kansas State University, Manhattan, KS, USA
| | - Rubia Parvin
- Department of Life Science and Biotechnology, Jadavpur University, 188,Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Debbethi Bera
- Department of Physics, Jadavpur University, 188,Raja S.C. Mallick Road, Kolkata, 700032, India
| | - Uttariya Roy
- Department of Environmental Science, Budge Budge College, University of Calcutta, 7,Deshbandhu Chittaranjan Das Road, Shyampur, Budge Budge, Kolkata, 700137, West Bengal, India
| | - Ratan Gachhui
- Department of Life Science and Biotechnology, Jadavpur University, 188,Raja S.C. Mallick Road, Kolkata, 700032, India.
| |
Collapse
|
20
|
Removal of phenol from aqueous solution by adsorption onto hematite (α-Fe2O3): Mechanism exploration from both experimental and theoretical studies. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.03.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
|
21
|
Engineering Functionalized Chitosan-Based Sorbent Material: Characterization and Sorption of Toxic Elements. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9235138] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The present study reports the engineering of functionalized chitosan (CH)-based biosorbent material. Herein, a two-step reaction was performed to chemically modify the CH using 1,4-bis(3-aminopropyl) piperazine to incorporate nitrogen basic centers for cations sorption from the aqueous environment. The resultant functionalized chitosan-based sorbent material was designated as CH-ANP and characterized using various analytical techniques, including elemental analysis, Fourier-transform infrared spectroscopy (FTIR), 13C NMR (in solid-state), X-ray diffraction, and thermal analysis. Then, the newly engineered CH-ANP was employed for the removal of copper, lead, and cadmium in the aqueous medium. Langmuir sorption isotherm analysis revealed that the highest sorption abilities achieved were 2.82, 1.96, and 1.60 mmol g−1 for copper, cadmium, and lead, respectively. Linear and nonlinear regression methods were deployed on the sorption data to study the behavior of the Langmuir, the Freundlich, and the Temkin sorption isotherms. Among the four different forms, the Langmuir isotherm type 1 fit well to the experimental data as compared to the other models. It also showed the lowest values of error, and a higher correlation coefficient than the Freundlich and Temkin models; thus it was the best fit with the experimental data compared to the latter two models. In conclusion, the findings suggest that chemically modified novel materials with enhanced Lewis basic centers are useful and promising candidates for the sorption of various toxic cations in aqueous solution.
Collapse
|
22
|
Haq S, Rehman W, Waseem M, Rehman MU, Shah KH. Modeling, Thermodynamic Study and Sorption Mechanism of Cadmium Ions onto Isopropyl Alcohol Mediated Tin Dioxide Nanoparticles. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01256-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
23
|
Salman SM, Ali A, Khan B, Iqbal M, Alamzeb M. Thermodynamic and kinetic insights into plant-mediated detoxification of lead, cadmium, and chromium from aqueous solutions by chemically modified Salvia moorcroftiana leaves. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:14339-14349. [PMID: 30868463 DOI: 10.1007/s11356-019-04611-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Accepted: 02/18/2019] [Indexed: 06/09/2023]
Abstract
Thermodynamic and kinetic aspects for the biosorptive removal of Pb, Cd, and Cr metals from water using Chemically Modified Leaves of Salvia moorcroftiana (CMSML) were determined. Different parameters including pH, temperature, metal's initial concentration, biomass dosage, and contact time were optimized. Optimum biosorptions of Pb, Cd, and Cr were attained at pH values of 6.0, 7.0, and 3.0 respectively. Batch experiments showed maximum removal of both Pb and Cd at 40 °C and that of Cr at 30 °C. Biosorption capability of CMSML was observed to decrease with raising temperature. Optimal equilibrium times for Pb, Cd, and Cr uptake were 120, 60, and 120 min respectively. Based on the values of regression correlation coefficients (R2), the current data is explained better by applying Langmuir isotherms than the Freundlich model. Maximum biosorbent capabilities (qmax) for Pb, Cd, and Cr were approximately 270.27, 100.00, and 93.45 mg/g respectively. Thermodynamically, removal of all the three metal ions was shown to be exothermic and spontaneous.
Collapse
Affiliation(s)
- Syed Muhammad Salman
- Department of Chemistry, Islamia College University, Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan.
| | - Asad Ali
- Department of Chemistry, Islamia College University, Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
- Collaborative Innovation Center of Sustainable Energy Materials, Guangxi University, Nanning, 530004, People's Republic of China
| | - Behramand Khan
- Department of Chemistry, Islamia College University, Peshawar, Khyber Pakhtunkhwa, 25120, Pakistan
| | - Mehmood Iqbal
- Pakistan Council of Scientific and Industrial Research (PCSIR) Lab Complex, Jamrud road, Peshawar, 25120, Pakistan
| | - Muhammad Alamzeb
- Department of Chemistry, Faculty of Sciences, University of Kotli, Kotli, Azad Jammu and Kashmir, 11100, Pakistan
| |
Collapse
|
24
|
Popoola LT. Characterization and adsorptive behaviour of snail shell-rice husk (SS-RH) calcined particles (CPs) towards cationic dye. Heliyon 2019; 5:e01153. [PMID: 30723831 PMCID: PMC6351435 DOI: 10.1016/j.heliyon.2019.e01153] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Revised: 12/27/2018] [Accepted: 01/18/2019] [Indexed: 12/07/2022] Open
Abstract
In this study, a low-cost composite adsorbent was prepared from snail shell and rice husk (SS-RH) through calcination for brilliant green dye (BGD) adsorption from aqueous solution. Six two-parameter and three three-parameter isotherm models were used to fit the experimental data by both linear and non-linear regression methods using ten error functions. Linear and non-linear regression analysis coupled with linear and non-linear fit error functions all revealed Langmuir and Sip as two- and three-parameter isotherm models well-fitted for BGD uptake from aqueous solution using calcined particles (CPs) of SS-RH. Chi-square (χ2) error function proved to be the best applicable predictive error function for the two-parameter isotherm study while sum of absolute error (EABS), hybrid functional error (HYBRID) and normalized standard deviation (NSD) are the best error functions for non-linear Redlich-Peterson, Sips and Toth three-parameter isotherm models respectively. Irregular surface texture was observed for the calcined particles of SS-RH as revealed by SEM with BGD filling the opening pores after adsorption. FTIR revealed shift in spectrum broad peaks after adsorption. EDS exhibited active mixed metal oxides formation before adsorption with the observance of weight percent change after adsorption.
Collapse
Affiliation(s)
- Lekan Taofeek Popoola
- Department of Chemical and Petroleum Engineering, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| |
Collapse
|
25
|
Study on Adsorption of Cu and Ba from Aqueous Solutions Using Nanoparticles of Origanum ( OR) and Lavandula ( LV). Bioinorg Chem Appl 2018; 2018:3936178. [PMID: 30271429 PMCID: PMC6151223 DOI: 10.1155/2018/3936178] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 07/31/2018] [Indexed: 11/18/2022] Open
Abstract
Wild herbs (Origanum (OR) and Lavandula (LV)) were used as environment-friendly adsorbents in this study. The adsorbents were used for adsorption of Cu and Ba from water. The adsorption of heavy metals onto OR and LV was dependent on particle size, dose, and solution pH. The diameter of adsorbent particles was less than 282.8 nm. The adsorption follows second-order kinetics. Langmuir and Freundlich models have been applied to describe the equilibrium data, and the thermodynamic parameters, the Gibbs free energy, ∆G°, enthalpy, ∆H°, and entropy, ∆S°, have been determined. The positive value of ∆H° suggests that the adsorption of heavy metals by the wild herbs is endothermic. The negative values of ∆G° at all the studied temperatures indicate that the adsorption is a spontaneous process. It can be concluded that OR and LV are promising adsorbents for the removal of heavy metals from aqueous solutions over a range of concentrations.
Collapse
|
26
|
Effects and Mechanisms of Microbial Remediation of Heavy Metals in Soil: A Critical Review. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8081336] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The use of microbes to change the concentration of heavy metals in soil and improve the ability of plants to deal with elevated metals concentrations has significant economic and ecological benefits. This paper reviews the origins and toxic effects of heavy metal pollution in soil, and describes the heavy metal accumulation mechanisms of microbes, and compares their different bioconcentration abilities. Biosorption, which depends on the special structure of the cell wall, is found to be the primary mechanism. Furthermore, Escherichia coli are found to adsorb more heavy metals than other species. Factors influencing microbial treatment of wastewater and soil containing heavy metals include temperature, pH, and different substrates. Finally, problems in the application of microbial treatment of heavy metal contamination are considered, and possible directions for future research are discussed.
Collapse
|
27
|
Hydrogeochemical Evolution and Heavy Metal Contamination in Groundwater of a Reclaimed Land on Zhoushan Island. WATER 2018. [DOI: 10.3390/w10030316] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
28
|
Singh PC, Srivastava S, Shukla D, Bist V, Tripathi P, Anand V, Arkvanshi SK, Kaur J, Srivastava S. Mycoremediation Mechanisms for Heavy Metal Resistance/Tolerance in Plants. Fungal Biol 2018. [DOI: 10.1007/978-3-319-77386-5_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
29
|
Adsorption of Pb 2+ , Ni 2+ , Cu 2+ , Co 2+ metal ions from aqueous solution by PPI/SiO 2 as new high performance adsorbent: Preparation, characterization, isotherm, kinetic, thermodynamic studies. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.04.117] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
|
30
|
Aqueous sodium borohydride induced thermally stable porous zirconium oxide for quick removal of lead ions. Sci Rep 2016; 6:23175. [PMID: 26980545 PMCID: PMC4793254 DOI: 10.1038/srep23175] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/29/2016] [Indexed: 11/08/2022] Open
Abstract
Aqueous sodium borohydride (NaBH4) is well known for its reducing property and well-established for the development of metal nanoparticles through reduction method. In contrary, this research paper discloses the importance of aqueous NaBH4 as a precipitating agent towards development of porous zirconium oxide. The boron species present in aqueous NaBH4 play an active role during gelation as well as phase separated out in the form of boron complex during precipitation, which helps to form boron free zirconium hydroxide [Zr(OH)4] in the as-synthesized condition. Evolved in-situ hydrogen (H2) gas-bubbles also play an important role to develop as-synthesized loose zirconium hydroxide and the presence of intra-particle voids in the loose zirconium hydroxide help to develop porous zirconium oxide during calcination process. Without any surface modification, this porous zirconium oxide quickly adsorbs almost hundred percentages of toxic lead ions from water solution within 15 minutes at normal pH condition. Adsorption kinetic models suggest that the adsorption process was surface reaction controlled chemisorption. Quick adsorption was governed by surface diffusion process and the adsorption kinetic was limited by pore diffusion. Five cycles of adsorption-desorption result suggests that the porous zirconium oxide can be reused efficiently for removal of Pb (II) ions from aqueous solution.
Collapse
|