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Liu SZ, Ding W, Zhang HW, Li ZS, Tian KC, Liu C, Geng ZC, Xu CY. Magnetized bentonite modified rice straw biochar: Qualitative and quantitative analysis of Cd(II) adsorption mechanism. CHEMOSPHERE 2024; 359:142262. [PMID: 38714252 DOI: 10.1016/j.chemosphere.2024.142262] [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: 01/28/2024] [Revised: 05/03/2024] [Accepted: 05/04/2024] [Indexed: 05/09/2024]
Abstract
Industrialization has caused a significant global issue with cadmium (Cd) pollution. In this study, Biochar (Bc), generated through initial pyrolysis of rice straw, underwent thorough mixing with magnetized bentonite clay, followed by activation with KOH and subsequent pyrolysis. Consequently, a magnetized bentonite modified rice straw biochar (Fe3O4@B-Bc) was successfully synthesized for effective treatment and remediation of this problem. Fe3O4@B-Bc not only overcomes the challenges associated with the difficult separation of individual bentonite or biochar from water, but also exhibited a maximum adsorption capacity of Cd(II) up to 241.52 mg g-1. The characterization of Fe3O4@B-Bc revealed that its surface was rich in C, O and Fe functional groups, which enable efficient adsorption. The quantitative calculation of the contribution to the adsorption mechanism indicates that cation exchange and physical adsorption accounted for 65.87% of the total adsorption capacity. In conclusion, Fe3O4@B-Bc can be considered a low-cost and recyclable green adsorbent, with broad potential for treating cadmium-polluted water.
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Affiliation(s)
- Shu-Zhi Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Wei Ding
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Hong-Wei Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Zhu-Shuai Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Ke-Chun Tian
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Ce Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China
| | - Zeng-Chao Geng
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Northwest Plant Nutrition and Agro-Environment in Ministry of Agriculture, PR China, Yangling, 712100, China.
| | - Chen-Yang Xu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, China; Key Laboratory of Northwest Plant Nutrition and Agro-Environment in Ministry of Agriculture, PR China, Yangling, 712100, China.
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Dokania P, Maity S, Patil PB, Sarkar A. Isothermal and Kinetics Modeling Approach for the Bioremediation of Potentially Toxic Trace Metal Ions Using a Novel Biosorbent Acalypha wilkesiana (Copperleaf) Leaves. Appl Biochem Biotechnol 2024; 196:2487-2517. [PMID: 37656353 DOI: 10.1007/s12010-023-04678-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 09/02/2023]
Abstract
The presence of trace metals in wastewater brings serious environmental pollution that threatens human health as well as the ecosystem throughout the world due to their non-biodegradability nature. The present study focuses on the bioremediation of toxic trace metals, namely arsenic (As), cadmium (Cd), and chromium (Cr), using Acalypha wilkesiana leaf raw biomass. The optimization of various process variables was done to determine the removal percentage of trace metal using Acalypha wilkesiana leaf raw biomass, and the optimum conditions were an adsorbent dose of 0.5 g, contact time 10 h, 8 h, and 10 h, process temperature 30 °C, initial concentration of trace metal as 30 µg/L, 30 mg//L, and 40 mg/L, and pH of 7.5, 7 and 7.5 for As5+, and Cd2+ and Cr6+, respectively. Acalypha wilkesiana leaf raw biomass is characterized using a scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and Fourier transformation infrared spectroscopy (FTIR), zeta potential before and after adsorption of the trace metal ions. The study was well fitted for the equilibrium data for Langmuir isotherm for As5+, Cd2+, and Cr6+, Freundlich for As5+, Dubinin-Radushkevinch (D-R) for Cr6+, and Temkin for As5+ and Cr6+. The adsorption of all three trace metals was confirmed by the kinetics and thermodynamic studies to be following pseudo-second-order kinetics with endothermic as well as spontaneous processes, respectively. Thus, the present study indicates Acalypha wilkesiana leaf raw biomass as an effective and efficient novel biosorbent to remediate different trace metals from aqueous systems with its possible application in existing and novel methods for wastewater management.
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Affiliation(s)
- Puja Dokania
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Pritam Bajirao Patil
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, India.
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Maity S, Dokania P, Goenka M, Rahul S, Are RP, Sarkar A. Techno-economic feasibility and life cycle assessment analysis for a developed novel biosorbent-based arsenic bio-filter system. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2024; 46:79. [PMID: 38367087 DOI: 10.1007/s10653-023-01839-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 12/18/2023] [Indexed: 02/19/2024]
Abstract
Significant aquifers around the world is contaminated by arsenic (As), that is regarded as a serious inorganic pollution. In this study, a biosorbent-based bio-filter column has been developed using two different plant biomasses (Colocasia esculenta stems and Artocarpus heterophyllus seeds) to remove total As from the aqueous system. Due to its natural origin, affordability, adaptability, removal effectiveness, and possibility for integration with existing systems, the biosorbent-based bio-filter column presents an alluring and promising method. It offers a practical and eco-friendly way to lessen the damaging impacts of heavy metal contamination on ecosystems and public health. In this system, As (III) is oxidized to As (V) using chlorine as an oxidant, after this post-oxidized As-contaminated water is passed through the bio-filter column to receive As-free water (or below World Health Organization permissible limit for As in drinking water). Optimization of inlet flow rate, interference of co-existing anions and cations, and life cycle of the column were studied. The maximum removal percent of As was identified to be 500 µg L-1 of initial concentration at a flow rate of 1.5 L h-1. Furthermore, the specifications of the biosorbent material was studied using elemental analysis and Zeta potential. The particle size distribution, morphological structures, and chemical composition before and after binding with As were studied using dynamic light scattering (DLS), scanning electron microscope-energy dispersive X-Ray spectroscopy (SEM-EDX), and fourier's transform infrared spectroscopy (FTIR) analysis, respectively. SuperPro 10 software was used to analyze the techno-economic viability of the complete unit and determine its ideal demand and potential. Life cycle assessment was studied to interpret the environmental impacts associated alongside the process system. Therefore, this bio-filtration system could have a potential application in rural, urban, and industrial sectors.
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Affiliation(s)
- Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Puja Dokania
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Manav Goenka
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - S Rahul
- Department of Biotechnology, Indian Institute of Technology, Madras, 600036, India
| | - Ramakrishna P Are
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela, Odisha, 769008, India.
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Poddar K, Sarkar D, Sahu JR, Patil PB, Pal SK, Sarkar A. Techno-economic assessment of doxycycline recovery using rice straw biochar: A circular economic execution. CHEMOSPHERE 2023; 338:139504. [PMID: 37453520 DOI: 10.1016/j.chemosphere.2023.139504] [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: 04/27/2023] [Revised: 07/03/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
The non-scientific disposal of antibiotics has resulted in massive contamination of the bioactive molecules in the aquatic ecosystem. The presence of antibiotics in the effluents limits the biodegradation of micropollutants by affecting the micro-ecological balance. Hence this study aims to remove doxycycline antibiotics from wastewater using biochar. Elemental analysis of the biochar revealed C, Si and N as most abundant content while BET analysis confirmed the mesoporous nature of the adsorbent. The XRD and Raman spectra confirmed amorphic sp2 carbon dominant structure in the biochar. The adsorption mechanism was predicted, correlating the charge distribution and FTIR analysis. The effects of different process parameters were studied using CCD, ANOVA, and RSM. Moreover, the different kinetic models revealed that the pseudo-second-order kinetics model was the best fit and film layer diffusion was the dominant contributor. The isotherm study indicated the high adsorption capacity of the biochar and its non-ionic nature. Thermodynamics study established the spontaneity and exothermic nature. The results suggested no significant change in antibiotic removal efficiency across different system (pond water (97.13%), river water (98.11%), seawater (96.84%), tap water (99.13%), and distilled water (99.74%)). For the desorption of the antibiotic from the biochar surface, 90% ethanol was the most efficient (98.9%), and upon recrystallization by solvent evaporation, 98.7% of the antibiotic of the initial load was recovered. Hence, the implementation of this described process would enable resource recovery along with water treatment, which is not possible with existing approaches. The cost analysis of the whole process revealed that biochar preparation was the bulk expense and the process would be self-sustainable even if the price of the recovered antibiotic would be set at less than half ($41/kg) of the current market price ($94/kg) of the API. Thus, the process endorses a successful circular economy approach toward societal and economic sustainability.
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Affiliation(s)
- Kasturi Poddar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
| | - Debapriya Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
| | - Jyotsna Rani Sahu
- Department of Botany and Biotechnology, Ravenshaw University, Odisha, 753003, India.
| | - Pritam Bajirao Patil
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
| | - Sumit Kumar Pal
- Department of Ceramic Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Odisha, 769008, India.
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Maity S, Sarkar D, Poddar K, Patil P, Sarkar A. Biofilm-Mediated Heavy Metal Removal from Aqueous System by Multi-Metal-Resistant Bacterial Strain Bacillus sp. GH-s29. Appl Biochem Biotechnol 2023; 195:4832-4850. [PMID: 36576655 DOI: 10.1007/s12010-022-04288-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 12/29/2022]
Abstract
Worldwide ever-augmenting urbanization, modernization, and industrialization have contributed to the release of pernicious compounds and a variety of pollutants into the environment. The pollutants discharged due to industrialization are of global concern. Industrial waste and effluent are comprised of hazardous organic and inorganic chemicals including heavy metals which pose a significant threat to the environment and may bring about numerous diseases or abnormalities in human beings. This brings on greater urgency for remediation of these polluted soil and water using sustainable approaches and mechanisms. In the present research, a multi-metal-resistant, gram-positive, non-virulent bacterial strain Bacillus sp. GH-s29 was isolated from contaminated groundwater of Bhojpur district, Bihar, India. The strain had the potential to develop a biofilm that was able to remediate different heavy metals [arsenic, cadmium, and chromium] from individual and multi-heavy metal solutions. Maximum removal for As (V), Cd (II), and Cr (VI) from individual-metal and the multi-metal solution was observed to be 73.65%, 57.37%, 61.62%, and 48.92%, 28.7%, and 35.46%, respectively. SEM-EDX analysis revealed the sequestration of multi-heavy metals by bacterial biofilm. Further characterization by FTIR analysis ensured that the presence of negatively charged functional groups on the biofilm-EPS such as hydroxyl, phosphate, sulfate, and carboxyl helps in binding to the positively charged metal ions. Thus, Bacillus sp. GH-s29 proved to be an effective and economical alternative for different heavy metal remediation from contaminated sites.
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Affiliation(s)
- Sourav Maity
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Debapriya Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Kasturi Poddar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Pritam Patil
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India
| | - Angana Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, Odisha, India.
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Khan AA, Naqvi SR, Ali I, Arshad M, AlMohamadi H, Sikandar U. Algal-derived biochar as an efficient adsorbent for removal of Cr (VI) in textile industry wastewater: Non-linear isotherm, kinetics and ANN studies. CHEMOSPHERE 2023; 316:137826. [PMID: 36640973 DOI: 10.1016/j.chemosphere.2023.137826] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/17/2022] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
Textile industries release effluent that contains the vast majority of heavy metals in which Cr (VI) is a toxic carcinogenic element that causes an environmental problem. The aim of the work is to synthesize algae-derived biochar derived from algae using slow pyrolysis at an operating temperature of 500 °C, a heating rate of 10 °C/min and a residence time of 60 min and to use it as an adsorbent to remove Cr (VI). The batch experiment was carried out using different concentrations of Cr (VI) (1, 10, 25, 50, 100, 125, 150 and 200 ppm) at different intervals of time (2.5, 5, 10, 15, 30, 60, 120 and 240 min). The maximum removal percentage of Cr (VI) is 97.88% for the metal concentration of 1 ppm exhibiting non-linear adsorption isotherm (Langmuir, Freundlich, Dubinin-Radushkevich, and Temkin models) and kinetic models (pseudo-first order, pseudo-second order, nth order, and intra-particle diffusion) were analyzed using a solver add-in of Microsoft Excel. According to the results, the Langmuir isotherm model (R2 = 0.999) and pseudo-nth order models are suitable to describe monolayer adsorption and the process kinetics, respectively. The maximum adsorption capacity of algal biochar to adsorb is 186.94 mg/g. For the prediction of the optimal removal efficacy, an artificial neural network of the MLP-2-7-1 model was used. The results obtained are useful for future work using algal biochar as an adsorbent of Cr (VI) from textile wastewater to achieve sustainable development goals.
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Affiliation(s)
- Abdul Ahad Khan
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan
| | - Salman Raza Naqvi
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan.
| | - Imtiaz Ali
- Department of Chemical and Materials Engineering, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Muazzam Arshad
- Department of Chemical Engineering, University of Engineering & Technology, KPK, Peshawar, Pakistan
| | - Hamad AlMohamadi
- Department of Chemical Engineering, Faculty of Engineering, Islamic University of Madinah, Madinah, Saudi Arabia
| | - Umair Sikandar
- Laboratory of Alternative Fuels & Sustainability, School of Chemical & Materials Engineering, National University of Sciences & Technology, H-12, Islamabad, Pakistan
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Lingamdinne LP, Choi JS, Choi YL, Chang YY, Koduru JR. Stable and recyclable lanthanum hydroxide-doped graphene oxide biopolymer foam for superior aqueous arsenate removal: Insight mechanisms, batch, and column studies. CHEMOSPHERE 2023; 313:137615. [PMID: 36572366 DOI: 10.1016/j.chemosphere.2022.137615] [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: 06/10/2022] [Revised: 11/17/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
In this study, a graphene oxide-based lanthanum hydroxide/chitosan foam (CSGOL foam) was synthesized for arsenate (As(V)) remediation in surface water. The synthesized CSGOL foam texture and purity was assessed using scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) studies. The results proved that the foam was highly porous, stable, and had high surface functionality that facilitated adsorption for water pollutant removal. The sorption results proved that the As(V) removal was high (146.20 mg/g at pH 6 with 0.5 g/L CSGOL foam) when compared to the similar type of materials, endothermic chemisorption due to the production of monodentate and bidentate inner-sphere complexes. Furthermore, continuous column results indicated that the As(V) concentration in real surface waters was reduced to WHO standards (less than 10 μg As/L of water) of As(V) in drinking water for up to 10,000 bed volume. Further it can be used up to four cycles without loss of efficacy less than 93%. Because of its excellent removal capabilities and simple synthesis technique, CSGOL foam shows significant promise for treating As(V)-containing water. Further, the XPS analysis and batch studies results suggests that As(V) removal mechanism was involved electrostatic and surface complexation through chemical interaction predominately.
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Affiliation(s)
| | - Jong-Soo Choi
- Environmental Engineering Department, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Yu-Lim Choi
- Environmental Engineering Department, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Yoon-Young Chang
- Environmental Engineering Department, Kwangwoon University, Seoul, 01897, Republic of Korea.
| | - Janardhan Reddy Koduru
- Environmental Engineering Department, Kwangwoon University, Seoul, 01897, Republic of Korea.
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Chu KH, Hashim MA, Bashiri H, Debord J, Harel M, Bollinger JC. The Flory–Huggins Isotherm and Water Contaminant Adsorption: Debunking Some Modeling Fallacies. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Khim Hoong Chu
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur50603, Malaysia
| | - Mohd Ali Hashim
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur50603, Malaysia
| | - Hadis Bashiri
- Department of Physical Chemistry, Faculty of Chemistry, University of Kashan, Kashan8731753153, Iran
| | - Jean Debord
- Service de Pharmacologie-Toxicologie, Hôpital Dupuytren, 87042Limoges, France
| | - Michel Harel
- Laboratoire Vie-Santé UR 24 134, Faculté de Médecine, Université de Limoges, 87025Limoges, France
- Institut de Mathématiques de Toulouse, UMR CNRS 5219, 31062Toulouse, France
| | - Jean-Claude Bollinger
- Laboratoire E2Lim, Faculté des Sciences & Techniques, Université de Limoges, 87060Limoges, France
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Lima ÉC, Pinto D, Schadeck Netto M, Dos Reis GS, Silva LFO, Dotto GL. Biosorption of Neodymium (Nd) from Aqueous Solutions Using Spirulina platensis sp. Strains. Polymers (Basel) 2022; 14:polym14214585. [PMID: 36365577 PMCID: PMC9654694 DOI: 10.3390/polym14214585] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 11/16/2022] Open
Abstract
Rare earth elements such as neodymium (Nd) are important elements used mainly in developing new technologies. Although they are found in low concentrations in nature, they can be obtained by extracting solid samples such as phosphogypsum. Among the techniques, adsorption has been used successfully with several adsorbent materials. In this work, two strains of Spirulina platensis (LEB-18 and LEB-52) were employed as biosorbents for efficiently removing the Nd element from the aqueous media. Biosorption tests were carried out in a batch system, and the results of the biosorption kinetics showed that for both materials, the biosorption of Nd was better described by the Avrami model. Moreover, it could be considered that 80 min would be necessary to attain the equilibrium of Nd(III) using both biosorbents. The result of the biosorption isotherms showed that for both strains, the best-fitted model was the Liu model, having a maximum biosorption capacity of 72.5 mg g−1 for LEB-18 and 48.2 mg g−1 for LEB-52 at a temperature of 298 K. Thermodynamics of adsorption showed that for both LEB-18 and LEB-52 the process was favorable (∆G° < 0) and exothermic (∆H° −23.2 for LEB-18 and ∆H° −19.9 for LEB-52). Finally, both strains were suitable to uptake Nd, and the better result of LEB-18 could be attributed to the high amount of P and S groups in this biomass. Based on the results, a mechanism of electrostatic attraction of Nd3+ and phosphate and sulfate groups of both strains of Spirulina platensis was proposed.
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Affiliation(s)
- Éder C. Lima
- Institute of Chemistry, Federal University of Rio Grande do Sul, Porto Alegre 90040-060, Brazil
| | - Diana Pinto
- Department of Civil and Environmental, Universidad De La Costa, Calle 58 # 55-66, Barranquilla 080002, Colombia
| | - Matias Schadeck Netto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Santa Maria 97105-900, Brazil
| | - Glaydson S. Dos Reis
- Department of Forest Biomaterials and Technology, Biomass Technology Centre, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Luis F. O. Silva
- Department of Civil and Environmental, Universidad De La Costa, Calle 58 # 55-66, Barranquilla 080002, Colombia
- Correspondence: (L.F.O.S.); (G.L.D.)
| | - Guilherme L. Dotto
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Santa Maria 97105-900, Brazil
- Correspondence: (L.F.O.S.); (G.L.D.)
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