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He L, Qi X, Wei W, Zhang X, Wang J, Gao Z. Biomass-activated carbon-based superhydrophobic sponge with photothermal properties for adsorptive separation of waste oil. JOURNAL OF HAZARDOUS MATERIALS 2024; 477:135222. [PMID: 39038375 DOI: 10.1016/j.jhazmat.2024.135222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 07/09/2024] [Accepted: 07/14/2024] [Indexed: 07/24/2024]
Abstract
The increasing discharge of oily wastewater from life poses a serious threat to the ecological environment and human health. To develop green, efficient, and low-cost materials for oil-water separation, a superhydrophobic photothermal oil-absorbing sponge (CAC-PDA@MF) was prepared by using nanoscale coconut shell activated carbon (CAC) loaded on a melamine sponge in this study. The sponge had excellent superhydrophobicity (WCA of 159.53°) due to the reduction of surface energy by grafting long-chain silanes. The adsorption capacity of the sponge was 69.04 g/g-158.27 g/g for a wide range of oils and organic solvents, and the sponge had excellent mechanical properties for multiple adsorption and recovery of oil. After 50 cycles of oil-water separation, its separation efficiency was maintained at over 98 %. In addition, the material had high acid, alkali, and salt resistance as well as excellent photothermal conversion properties. Its surface temperature rose rapidly to 100 °C and above, at a light intensity of 1.0 kW/m2. The material was capable of adsorbing and recovering high-viscosity oils that were solid or semi-solid at room temperature. Its versatility and commercial value made it a promising candidate for a wide range of applications.
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Affiliation(s)
- Lan He
- School of Food Science and Engineering, Hainan University, Haikou 570228, PR China
| | - Xinyu Qi
- School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Weijie Wei
- School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Xiaqing Zhang
- School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Jiang Wang
- School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China
| | - Zhuwei Gao
- School of Chemistry and Chemical Engineering, Hainan University, Haikou 570228, PR China.
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2
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Song Z, He J, Kouzehkanan SMT, Oh TS, Olshansky Y, Duin EC, Carroll KC, Wang D. Enhanced sorption and destruction of PFAS by biochar-enabled advanced reduction process. CHEMOSPHERE 2024; 363:142760. [PMID: 38969229 DOI: 10.1016/j.chemosphere.2024.142760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/02/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
The biochar-enabled advanced reduction process (ARP) was developed for enhanced sorption (by biochar) and destruction of PFAS (by ARP) in water. First, the biochar (BC) was functionalized by iron oxide (Fe3O4), zero valent iron (ZVI), and chitosan (chi) to produce four biochars (BC, Fe3O4-BC, ZVI-chi-BC, and chi-BC) with improved physicochemical properties (e.g., specific surface area, pore structure, hydrophobicity, and surface functional groups). Batch sorption experimental results revealed that compared to unmodified biochar, all modified biochars showed greater sorption efficiency, and the chi-BC performed the best for PFAS sorption. The chi-BC was then selected to facilitate reductive destruction and defluorination of PFAS in water by ARP in the UV-sulfite system. Adding chi-BC in UV-sulfite ARP system significantly enhanced both degradation and defluorination efficiencies of PFAS (up to ∼100% degradation and ∼85% defluorination efficiencies). Radical analysis using electron paramagnetic resonance (EPR) spectroscopy showed that sulfite radicals dominated at neutral pH (7.0), while hydrated electrons (eaq-) were abundant at higher pH (11) for the efficient destruction of PFAS in the ARP system. Our findings elucidate the synergies of biochar and ARP in enhancing PFAS sorption and degradation, providing new insights into PFAS reductive destruction and defluorination by different reducing radical species at varying pH conditions.
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Affiliation(s)
- Ziteng Song
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Jianzhou He
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | | | - Tae-Sik Oh
- Department of Chemical Engineering, Auburn University, Auburn, AL, 36849, USA
| | - Yaniv Olshansky
- Department of Crop, Soil, and Environmental Sciences, Auburn, AL, 36849, USA
| | - Evert C Duin
- Department of Chemistry and Biochemistry, Auburn, AL, 36849, USA
| | - Kenneth C Carroll
- Department of Plant and Environmental Sciences, New Mexico State University, NM, 88003, USA
| | - Dengjun Wang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA.
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Behnami A, Pourakbar M, Ayyar ASR, Lee JW, Gagnon G, Zoroufchi Benis K. Treatment of aqueous per- and poly-fluoroalkyl substances: A review of biochar adsorbent preparation methods. CHEMOSPHERE 2024; 357:142088. [PMID: 38643842 DOI: 10.1016/j.chemosphere.2024.142088] [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: 01/21/2024] [Revised: 03/25/2024] [Accepted: 04/18/2024] [Indexed: 04/23/2024]
Abstract
Per- and poly-fluoroalkyl substances (PFAS) are synthetic chemicals widely used in everyday products, causing elevated concentrations in drinking water and posing a global challenge. While adsorption methods are commonly employed for PFAS removal, the substantial cost and environmental footprint of commercial adsorbents highlight the need for more cost-effective alternatives. Additionally, existing adsorbents exhibit limited effectiveness, particularly against diverse PFAS types, such as short-chain PFAS, necessitating modifications to enhance adsorption capacity. Biochar can be considered a cost-effective and eco-friendly alternative to conventional adsorbents. With abundant feedstocks and favorable physicochemical properties, biochar shows significant potential to be applied as an adsorbent for removing contaminants from water. Despite its effectiveness in adsorbing different inorganic and organic contaminants from water environments, some factors restrict its effective application for PFAS adsorption. These factors are related to the biochar properties, and characteristics of PFAS, as well as water chemistry. Therefore, some modifications have been introduced to overcome these limitations and improve biochar's adsorption capacity. This review explores the preparation conditions, including the pyrolysis process, activation, and modification techniques applied to biochar to enhance its adsorption capacity for different types of PFAS. It addresses critical questions about the adsorption performance of biochar and its composites, mechanisms governing PFAS adsorption, challenges, and future perspectives in this field. The surge in research on biochar for PFAS adsorption indicates a growing interest, making this timely review a valuable resource for future research and an in-depth exploration of biochar's potential in PFAS remediation.
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Affiliation(s)
- Ali Behnami
- Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran; Department of Environmental Health Engineering, Maragheh University of Medical Sciences, Maragheh, Iran
| | - Mojtaba Pourakbar
- Department of Environmental Health Engineering, Maragheh University of Medical Sciences, Maragheh, Iran; Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Ji-Woong Lee
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Copenhagen, Denmark; Novo Nordisk CO2 Research Center, Aarhus, Denmark
| | - Graham Gagnon
- Centre for Water Resources Studies, Department of Civil & Resource Engineering, Dalhousie University, Halifax, NS, Canada
| | - Khaled Zoroufchi Benis
- Department of Process Engineering and Applied Science, Dalhousie University, Halifax, NS, Canada.
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4
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Shehata FA, El-Kalliny AS, Abdel-Wahed MS, Attia MS, Gad-Allah TA. Highly effective and reusable Ni-Al oxide/Zn 0.4Co 0.6Fe 2O 4 superparamagnetic aerogel for oil-water separation. CHEMOSPHERE 2024; 355:141668. [PMID: 38490614 DOI: 10.1016/j.chemosphere.2024.141668] [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: 12/23/2023] [Revised: 02/19/2024] [Accepted: 03/06/2024] [Indexed: 03/17/2024]
Abstract
Oily wastewater from the oil industry and oil spill accidents has become a serious environmental problem and has attracted worldwide attention. The present study reports on the successful preparation of a novel magnetic Ni-Al oxide/Zn0.4Co0.6F2O4 mesoporous aerogel (MNA) as a highly selective adsorbent for oil removal from water. Oleic acid (OA) and Triton X-100 (TX) were used as hydrophobic agents for MNA surface modification. It was found that the attached amount of OA on the mesoporous MNA aerogel is 3.5 times larger than that of TX, giving an advantage to MNA-OA in oil separation. The MNA-OA displayed superhydrophobicity (contact angle ∼150°) and superparamagnetism properties that allowed the adsorbent to be used selectively for oil removal. The MNA-OA was found to have a high oil removal efficiency of ∼97% with an adsorption capacity of ∼2 g/g. Furthermore, the produced magnetic adsorbent has high stability due to the strong chemical binding of OA, which is demonstrated by its good reusability performance. Throughout five separate runs, the MNA-OA was shown to be a very efficient and reusable adsorbent for oily wastewater.
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Affiliation(s)
- Fagr A Shehata
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, 12622, Giza, Egypt
| | - Amer S El-Kalliny
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, 12622, Giza, Egypt
| | - Mahmoud S Abdel-Wahed
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, 12622, Giza, Egypt
| | - Mohamed S Attia
- Chemistry Department, Faculty of Science, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Tarek A Gad-Allah
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, 12622, Giza, Egypt.
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Nazar M, Ahmad A, Hussain SMS, Moniruzzaman M. Binary mixture of ionic liquid and span 80 for oil spill remediation: Synthesis and performance evaluation. MARINE POLLUTION BULLETIN 2024; 202:116311. [PMID: 38574502 DOI: 10.1016/j.marpolbul.2024.116311] [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: 12/12/2023] [Revised: 02/24/2024] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
The synthesis of new surfactants helps to mitigate the environmental and financial effects of oil spills by providing efficient cleanup options. Herein, this study provides the development of a binary mixture of Span 80 and Choline myristate [Cho][Mys], a surface-active ionic liquid (SAIL) as green dispersant for oil spill remediation. The synergistic interaction at a 60:40 (w/w) ratio significantly lowered the critical micelle concentration (cmc) to 0.029 mM. Dispersion efficiency tests with Arab crude oil showed optimal performance at a 60:40 ratio of Span 80 and [Cho][Mys] (1:25 dispersant to oil ratio, v/v), achieving 81.16 % dispersion effectiveness in the baffled flask test. The binary mixture demonstrated superior emulsion stability (6 h) and the lowest interfacial tension (1.12 mN/m). Acute toxicity experiments revealed the dispersant's practical non-toxicity with an LC50 value of 600 mg/L. Overall, this environmentally benign surfactant combination shows promise as a safe and effective oil spill dispersant.
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Affiliation(s)
- Masooma Nazar
- Center for Integrative Petroleum Research (CIPR), College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
| | - Aqeel Ahmad
- Center for Refining & Advanced Chemicals, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.
| | - Syed Muhammad Shakil Hussain
- Center for Integrative Petroleum Research (CIPR), College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
| | - Muhammad Moniruzzaman
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia.
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6
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Li P, Zhao Z, Zhang M, Su H, Zhao T, Feng W, Zhang Z. Exploring the Potential of Biochar Derived from Chinese Herbal Medicine Residue for Efficient Removal of Norfloxacin. Molecules 2024; 29:2063. [PMID: 38731553 PMCID: PMC11085230 DOI: 10.3390/molecules29092063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
One-step carbonization was explored to prepare biochar using the residue of a traditional Chinese herbal medicine, Atropa belladonna L. (ABL), as the raw material. The resulting biochar, known as ABLB4, was evaluated for its potential as a sustainable material for norfloxacin (NOR) adsorption in water. Subsequently, a comprehensive analysis of adsorption isotherms, kinetics, and thermodynamics was conducted through batch adsorption experiments. The maximum calculated NOR adsorption capacity was 252.0 mg/g at 298 K, and the spontaneous and exothermic adsorption of NOR on ABLB4 could be better suited to a pseudo-first-order kinetic model and Langmuir model. The adsorption process observed is influenced by pore diffusion, π-π interaction, electrostatic interaction, and hydrogen bonding between ABLB4 and NOR molecules. Moreover, the utilization of response surface modeling (RSM) facilitated the optimization of the removal efficiency of NOR, yielding a maximum removal rate of 97.4% at a temperature of 304.8 K, an initial concentration of 67.1 mg/L, and a pH of 7.4. Furthermore, the biochar demonstrated favorable economic advantages, with a payback of 852.5 USD/t. More importantly, even after undergoing five cycles, ABLB4 exhibited a consistently high NOR removal rate, indicating its significant potential for application in NOR adsorption.
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Affiliation(s)
- Pengwei Li
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Ziheng Zhao
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Miaomiao Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Hang Su
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Ting Zhao
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Weisheng Feng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
| | - Zhijuan Zhang
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, China; (P.L.); (Z.Z.); (M.Z.); (H.S.); (T.Z.); (W.F.)
- Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou 510632, China
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7
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Zhang W, Zhang M, Chen Q, Liu X. Stereo-complex polylactide composite aerogel for crude oil adsorption. Int J Biol Macromol 2024; 263:130283. [PMID: 38378113 DOI: 10.1016/j.ijbiomac.2024.130283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 01/25/2024] [Accepted: 02/16/2024] [Indexed: 02/22/2024]
Abstract
Adsorption materials are a cost-effective and simple method for oil spill remediation, but their efficiency is limited by high crude oil viscosity. Additionally, non-degradable materials pose another risk of secondary pollution, such as microplastic debris. Here, an environmentally-friendly stereo-complex polylactide composite (SCC) aerogel were developed via water-assisted thermally induced phase separation. The SCC with 3 wt% carbon nanotubes had a hierarchical structure of micro/nanoscale pores and high content of stereo-complex crystallites (35.7 %). Along with the excellent water repellency (water contact angle: 157°), SCC aerogel was 2.7 times as resistant to hydrolysis than poly(l-lactide) aerogel (Ph = 13, 37 °C). Additionally, a maximum absorption capacity of 41.2 g g-1 and over 97 % oil/water separation efficiency after 10 cycles were obtained in low viscosity conditions; while in high viscosity conditions, it displayed excellent photothermal performance, reaching a surface temperature of 85 °C under 1 sunlight, reducing crude oil absorption time from 42 min to 60 s (97.6 %-time savings). Moreover, it facilitated continuous crude oil spill recovery under sunlight with an adsorption rate of 3.3 × 104 kg m-3 h-1. The SCC aerogel presents a potential route for utilizing solar energy in crude oil adsorption applications without additional environmental burden.
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Affiliation(s)
- Weijian Zhang
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China; State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China
| | - Mingtao Zhang
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
| | - Qiang Chen
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Xianhu Liu
- State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou 450002, China.
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Monteverde G, Bianco F, Papetti P, Komínková D, Spasiano D, Paolella G, Muscetta M, Varjani S, Han N, Esposito G, Race M. Reuse of polymeric waste for the treatment of marine water polluted by diesel. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120529. [PMID: 38490006 DOI: 10.1016/j.jenvman.2024.120529] [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: 08/22/2023] [Revised: 10/23/2023] [Accepted: 02/29/2024] [Indexed: 03/17/2024]
Abstract
Accidental diesel spills can occur in marine environments such as harbors, leading to adverse effects on the environmental compartment and humans. This study proposes the surgical mask as an affordable and sustainable adsorbent for the remediation of diesel-contaminated seawater to cope with the polymeric waste generated monthly in hospital facilities. This approach can also be helpful considering a possible future pandemic, alleviating the pressure on the waste management system by avoiding improper mask incineration and landfilling, as instead occurred during the previous COVID-19. Batch adsorption-desorption experiments revealed a complete diesel removal from seawater after 120 min with the intact laceless mask, which showed an adsorption capacity of up to 3.43 g/g. The adsorption curve was better predicted via Weber and Morris's kinetic (R2 = 0.876) and, in general, with Temkin isotherm (R2 = 0.965-0.996) probably due to the occurrence of chemisorption with intraparticle diffusion as one of the rates-determining steps. A hysteresis index of 0.23-0.36 was obtained from the desorption isotherms, suggesting that diesel adsorption onto surgical masks was faster than the desorption mechanism. Also, the effect of pH, ionic strength and temperature on diesel adsorption was examined. The results from the reusability tests indicated that the surgical mask can be regenerated for 5 consecutive cycles while decreasing the adsorption capacity by only approximately 11%.
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Affiliation(s)
- Gelsomino Monteverde
- Department of Economics and Law, Territorial and Products Analysis Laboratory, University of Cassino and Southern Lazio, Via S. Angelo, Folcara, 03043, Cassino, Italy
| | - Francesco Bianco
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy.
| | - Patrizia Papetti
- Department of Economics and Law, Territorial and Products Analysis Laboratory, University of Cassino and Southern Lazio, Via S. Angelo, Folcara, 03043, Cassino, Italy
| | - Dana Komínková
- Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, Prague-Suchdol, 165 00, Czech Republic
| | - Danilo Spasiano
- Department of Civil, Environmental, Land, Building Engineering and Chemistry, Polytechnic University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Giulia Paolella
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Marica Muscetta
- Department of Chemical, Materials and Production Engineering (DICMaPI), University of Naples Federico II, Piazzale V. Tecchio 80, 80125, Naples, Italy
| | - Sunita Varjani
- School of Engineering, University of Petroleum and Energy Studies, Dehradun 248 007, Uttarakhand, India; Institute of Chartered Waste Managers, Gopalpura Bypass, Jaipur 302019, Rajasthan, India
| | - Ning Han
- Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001, Leuven, Belgium
| | - Giovanni Esposito
- Department of Civil, Architectural and Environmental Engineering, University of Napoli Federico II, Via Claudio 21, 80125, Napoli, Italy
| | - Marco Race
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Via Di Biasio 43, 03043, Cassino, Italy
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Shafiq F, Liu C, Zhou H, Chen H, Yu S, Qiao W. Stearic acid-modified hollow hydroxyapatite particles with enhanced hydrophobicity for oil adsorption from oil spills. CHEMOSPHERE 2024; 348:140651. [PMID: 37995975 DOI: 10.1016/j.chemosphere.2023.140651] [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: 02/20/2023] [Revised: 10/12/2023] [Accepted: 11/06/2023] [Indexed: 11/25/2023]
Abstract
Oil spills lead to a substantial depletion of aquatic biodiversity. The mitigation of an oil spill can entail considerable financial outlays, give rise to consequential environmental impacts, and present formidable operational complexities. In this research, hollow hydroxyapatite particles with enhanced oil adsorption characteristics were prepared by surface modification with stearic acid. Peanut and vacuum pump oils were used to imitate oil spills and conduct adsorption tests. The 50% stearic acid-modified hydroxyapatite (Sa/HAP) adsorbent showed superior hydrophobic properties with respect to water contact angle data. Adsorption isotherm analysis revealed that the adsorption processes of peanut and vacuum pump oils matched well with the Sips isotherm model, with regression coefficients of 0.992 and 0.996, respectively. The oil adsorption by the modified hydroxyapatite (HAP) adsorbent was found to be 9.85 g·g-1 for peanut oil and 12.13 g·g-1 for vacuum pump oil. Furthermore, the adsorption kinetics performance was determined by chemical interaction, whereas the adsorption equilibrium capacities were 8.97 g·g-1 and 11.41 g·g-1, respectively. Recycling of the spent adsorbent was performed with toluene stripping. The synthesized oil-adsorbents were analyzed by SEM, FTIR, XRD, contact angle, and TGA analyses. Hence, the efficacy of the Sa/HAP material as a potential adsorbent for the purification of oil-contaminated water was established, attributed to its commendable oil adsorption capability.
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Affiliation(s)
- Farishta Shafiq
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Chenyu Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China.
| | - Hengjun Zhou
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Hailiang Chen
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Simiao Yu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China
| | - Weihong Qiao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, PR China.
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10
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Lin SL, Zhang H, Chen WH, Song M, Kwon EE. Low-temperature biochar production from torrefaction for wastewater treatment: A review. BIORESOURCE TECHNOLOGY 2023; 387:129588. [PMID: 37558107 DOI: 10.1016/j.biortech.2023.129588] [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: 06/13/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/11/2023]
Abstract
Biochar, a carbon-rich and por ous material derived from waste biomass resources, has demonstrated tremendous potential in wastewater treatment. Torrefaction technology offers a favorable low-temperature biochar production method, and torrefied biochar can be used not only as a solid biofuel but also as a pollutant adsorbent. This review compares torrefaction technology with other thermochemical processes and discusses recent advancements in torrefaction techniques. Additionally, the applications of torrefied biochar in wastewater treatment (dyes, oil spills, heavy metals, and emerging pollutants) are comprehensively explored. Many studies have shown that high productivity, high survival of oxygen-containing functional groups, low temperature, and low energy consumption of dried biochar production make it attractive as an adsorbent for wastewater treatment. Moreover, used biochar's treatment, reuse, and safe disposal are introduced, providing valuable insights and contributions to developing sustainable environmental remediation strategies by biochar.
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Affiliation(s)
- Sheng-Lun Lin
- Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan
| | - Hongjie Zhang
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 70101, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan.
| | - Mengjie Song
- School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Eilhann E Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
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11
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Shen L, Jin R, Chen W, Qi D, Zhai S. Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6155. [PMID: 37763433 PMCID: PMC10532710 DOI: 10.3390/ma16186155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/02/2023] [Accepted: 09/07/2023] [Indexed: 09/29/2023]
Abstract
Oil agents produced from the degreasing treatment of synthetic fibers are typical pollutants in wastewater from printing and dyeing, which may cause large-scale environmental pollution without proper treatment. Purifying oily dye wastewater (DTY) at a low cost is a key problem at present. In this study, biochar microspheres with oil removal ability were prepared and derived from waste bamboo chips using the hydrothermal method. The structure of the biochar microsphere was regulated by activation and modification processes. Biochar microspheres were characterized, and their adsorption behaviors for oily dye wastewater were explored. The results show that the adsorption efficiency of biochar microspheres for oily dye wastewater (DTY) was improved significantly after secondary pyrolysis and the lauric acid grafting reaction. The maximum COD removal quantity of biochar microspheres for DTY was 889 mg/g with a removal rate of 86.06% in 30 min. In addition, the kinetics showed that chemisorption was the main adsorption manner. Considering the low cost of raw materials, the application of biochar microspheres could decrease the cost of oily wastewater treatment and avoid environmental pollution.
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Affiliation(s)
- Lu Shen
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; (L.S.); (R.J.); (D.Q.)
| | - Rushi Jin
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; (L.S.); (R.J.); (D.Q.)
| | - Wanming Chen
- Zhejiang Haoyu Technology Co., Ltd., Shaoxing 312000, China;
| | - Dongming Qi
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; (L.S.); (R.J.); (D.Q.)
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
| | - Shimin Zhai
- Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China; (L.S.); (R.J.); (D.Q.)
- Key Laboratory of Green Cleaning Technology & Detergent of Zhejiang Province, Lishui 323000, China
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12
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Krebsbach S, He J, Adhikari S, Olshansky Y, Feyzbar F, Davis LC, Oh TS, Wang D. Mechanistic understanding of perfluorooctane sulfonate (PFOS) sorption by biochars. CHEMOSPHERE 2023; 330:138661. [PMID: 37044140 DOI: 10.1016/j.chemosphere.2023.138661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/20/2023] [Accepted: 04/08/2023] [Indexed: 05/14/2023]
Abstract
Biochar has recently emerged as a cost-effective solution to combat per- and polyfluoroalkyl substances (PFAS) pollution in water, but mechanistic understanding of which physicochemical properties of biochars dictate PFAS sorptive removal from water remains elusive. Herein, 15 biochars were pyrolyzed from five feedstocks (corn, Douglas fir, eucalyptus, poplar, and switchgrass) at three pyrolysis temperatures (500, 700, and 900 °C) to investigate their removal efficiencies and mechanisms of perfluorooctane sulfonate (PFOS) from water. A commercial biochar was also included for comparison. Biochar physiochemical properties, including elemental composition, pH, specific surface area (SSA), pore structure, hydrophobicity, surface charge, surface functional groups, and crystalline structure were systematically characterized. Batch sorption data showed that the Douglas fir 900 biochar (Douglas fir and 900 are the feedstock type and pyrolysis temperature, respectively; this naming rule applies to other biochars), poplar 900 biochar, and commercial biochar can remove over 95% of PFOS from water. Structural equation model (SEM) was used to elucidate which biochar properties affect PFOS sorption. Interestingly, biochar pore diameter was identified as the most critical factor controlling PFOS removal, but pore diameter/pore volume ratio, SSA, pyrolysis temperature, hydrophobicity, and elemental composition all played variable roles. Hypothetically, biochars with small pore diameters and large pore volumes had a narrow yet deep pore structure that traps PFOS molecules inside once already sorbed, resulting in an enhanced PFOS sorption. Biochars with small pore diameter, low nitrogen content, and high pyrolysis temperature were also favorable for enhanced PFOS sorption. Our findings advance the knowledge of using biochars with optimized properties to remove PFOS and possibly other similar PFAS compounds from water.
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Affiliation(s)
- Samuel Krebsbach
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Jianzhou He
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Sushil Adhikari
- Biosystems Engineering Department, Auburn University, Auburn, AL 36849, USA
| | - Yaniv Olshansky
- Department of Crop, Soil, and Environmental Sciences, Auburn University, Auburn, AL 36849, USA
| | - Farshad Feyzbar
- Department of Chemical Engineering Auburn University, Auburn, AL, 36849, USA
| | - Leonard C Davis
- Department of Biological and Environmental Sciences, East Central University, Ada, OK, 74820, USA
| | - Tae-Sik Oh
- Department of Chemical Engineering Auburn University, Auburn, AL, 36849, USA
| | - Dengjun Wang
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA.
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13
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Tuo Z, Cai P, Xiao H, Pan Y. Ultralight and highly efficient oil-water selective aerogel from carboxymethyl chitosan and oxidized β-cyclodextrin for marine oil spill cleanup. Int J Biol Macromol 2023:125247. [PMID: 37295697 DOI: 10.1016/j.ijbiomac.2023.125247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
Biomass-based aerogels for oil spill cleanup have attracted tremendous research interests due to their feasibility in oil-water separation. However, the cumbersome preparation process and toxic cross-linking agents hinder their application. In this work, a facile and novel method to prepare hydrophobic aerogels is reported for the first time. Da-β-CD/CMCS aerogel (DCA), Da-β-CD/CMCS/PVA aerogel (DCPA), and hydrophobic Da-β-CD/CMCS/PVA aerogel (HDCPA) were successfully synthesized via the Schiff base reaction between carboxymethyl chitosan (CMCS) and dialdehyde β-cyclodextrin (Da-β-CD). Meanwhile, polyvinyl alcohol (PVA) acted as reinforcement and hydrophobic modification was conducted via chemical vapor deposition (CVD). The structure, mechanical properties, hydrophobic behaviors and absorption performance of aerogels were comprehensively characterized. The results indicated that the DCPA containing 7 % PVA exhibited excellent compressibility and elasticity even at a compressive strain of ε = 60 %, however, the DCA without PVA showed incompressibility, suggesting that the important role played by PVA in improving compressibility. Moreover, HDCPA possessed excellent hydrophobicity (water contact angle up to 148.4°), which could be well maintained after experiencing wear and corrosion in harsh environments. HDCPA also possesses high absorption capacities (24.4-56.5 g/g) towards different oils with satisfied recyclability. These advantages endow HDCPA with great potential and application prospects in offshore oil spill cleanup.
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Affiliation(s)
- Zhuangran Tuo
- Guangxi Colleges and Universities Key Laboratory of New Chemical Application Technology in Resources, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Pingxiong Cai
- Guangxi Key Laboratory of Green Chemical Materials and Safety Technology, College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada
| | - Yuanfeng Pan
- Guangxi Colleges and Universities Key Laboratory of New Chemical Application Technology in Resources, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China.
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14
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Zaker A, Chen Z, Lee K, Ben Hammouda S. Development of sludge-based activated char sorbent with enhanced hydrophobicity for oil spill cleanup. ENVIRONMENTAL TECHNOLOGY 2023; 44:1772-1781. [PMID: 34842051 DOI: 10.1080/09593330.2021.2012269] [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: 08/29/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
Recovery of oil spilled on surface waters by the use of sorbents remains one of the primary oil spill response options available. To improve on this response measure, we have successfully fabricated an activated char (AC) sorbent material by pyrolysis of sewage sludge (SS), a readily available waste product generated across the world from wastewater treatment plants. The inherent Fe-minerals in SS texture were converted to magnetic Fe3O4 particles during the pyrolysis reaction. The AC provided a unique means to recover the sorbent after the oil sorption process with a magnetic field. Meanwhile, a superhydrophobic sorbent material with a water contact angle of 152.2° was created by the treatment of AC with myristic acid which could float on the water surface. Feasibility studies at the laboratory-scale were conducted with motor oil and light crude oil to evaluate its potential use in spill response operations. Results showed a sorption capacity of about 8.5 and 10.7 g/g for motor oil and light crude oil, respectively. Following the recovery of the test oils by ethanol stripping, the material could be recycled up to 5 times with trivial loss in sorption capacity. This research proposes a framework for the development of a highly efficient sorbent material for oil spill response operations from SS waste.
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Affiliation(s)
- Ali Zaker
- Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Canada
| | - Zhi Chen
- Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Canada
| | - Kenneth Lee
- Ecosystem Science, Fisheries and Oceans Canada, Ottawa, Canada
| | - Samia Ben Hammouda
- Department of Building, Civil, and Environmental Engineering, Concordia University, Montreal, Canada
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15
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Hethnawi A, Kashif O, Jeong R, Sagala F, Hashlamoun K, Manasrah AD, Nassar NN. Green synthesis of novel titanomagnetite nanoparticles for oil spill cleanup. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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16
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Pallewatta S, Samarasekara SM, Rajapaksha AU, Vithanage M. Oil spill remediation by biochar derived from bio-energy industries with a pilot-scale approach during the X-Press Pearl maritime disaster. MARINE POLLUTION BULLETIN 2023; 189:114813. [PMID: 36967684 DOI: 10.1016/j.marpolbul.2023.114813] [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: 12/17/2022] [Revised: 02/28/2023] [Accepted: 03/04/2023] [Indexed: 06/18/2023]
Abstract
Most traditional oil spill clean-up techniques are still laboratory based and are expensive and fairly ineffective. This study investigated the capacity of biochars derived from bio-energy industries in oil spill remediation with a pilot-testing. Three different biochars from bio-energy industries, Embilipitya (EBC), Mahiyanganaya (MBC), and Cinnamon Wood Biochar (CWBC) were assessed for the removal of Heavy Fuel Oil (HFO) at three dosages (10, 25, and 50 g L-1). Pilot-scale experiment was conducted with 100 g of biochars separately in the oil slick of X-Press Pearl shipwreck. All adsorbents exhibited rapid oil removal (within 30 min). Isotherm data were well explained by Sips isotherm model (R2 > 0.98). The pilot-scale experiment resulted oil removal for CWBC, EBC and MBC as 0.62, 1.12, and 0.67 g kg-1 respectively, even in rough sea conditions with a limited contact time (>5 min) indicates biochar's capacity in oil spill remediation as a cost-effective material.
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Affiliation(s)
- Shiran Pallewatta
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - Sameera Maduranga Samarasekara
- Department of Civil Engineering, Faculty of Engineering, University of Sri Jayewardenepura, Dehiwala-Mount Lavinia, Sri Lanka
| | - Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka; Instrument Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka
| | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda 10250, Sri Lanka.
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17
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Separation of Oil from an Oil/Water Mixed Drop under a Lamb Wave Field: A Review. SEPARATIONS 2023. [DOI: 10.3390/separations10030187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023] Open
Abstract
Oil separation from oil/water mixed drop under a Lamb wave field is one of the emerging acoustofluidic technologies that integrate acoustics and microfluidics. In recent years, this technology has attracted significant attention due to its effective, fast, contactless, and pollution-free. It has been validated in the separation of oil/water mixture on different non-piezoelectric substrates and shows great potential in incompatible liquids applications. Here, we summarize our recent progress in this exciting field and show great potential in different applications. This review introduces the theories and mechanisms of oil/water mixed drop separation induced by Lamb waves, the applications of this technology in the separation of oil/water mixed drop, and discusses the challenges and prospects of this field.
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18
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Chen J, Sun M, Ni Y, Zhu T, Huang J, Li X, Lai Y. Superhydrophobic polyurethane sponge for efficient water-oil emulsion separation and rapid solar-assisted highly viscous crude oil adsorption and recovery. JOURNAL OF HAZARDOUS MATERIALS 2023; 445:130541. [PMID: 36493650 DOI: 10.1016/j.jhazmat.2022.130541] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 11/26/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Rapid and efficient cleaning of oily wastewater and high viscosity crude oil spills is still a global challenge. Conventional three-dimensional porous adsorbents are ineffective for oil-water separation in harsh environment and are restricted to the low fluidity of high viscosity crude oil at room temperature. Increasing temperature can enormously improve the fluidity of viscous crude oil. Herein, the polydimethylsiloxane (PDMS) /carbon black (CB) -modified polyurethane sponge (PU) were prepared by a simple one-step dip-coating method. PDMS/CB@PU (PCPU) exhibits high adsorption capacity to various oils and organic liquid (28.5-68.7 g/g), strong mechanical properties (500 cycles at 50%), outstanding reusability (100 cycles of adsorption and desorption) and excellent environmental stability due to the special PDMS/CB coating. The maximum surface temperature of PCPU sponge can reach 84.7 ℃ under 1 sunlight irradiation. Therefore, the PCPU sponge can rapidly heat and enhance the fluidity of viscous crude oil, significantly speeding up the viscous oil recovery process with the maximum adsorption capacity of 44.7 g/g. In addition, the PCPU sponge can also combine with the vacuum pump to realize the continuous and rapid repair of viscous oil spills from the seawater surface. In consideration of its simple preparation, cost-effectiveness and high oil absorption ability, this solar-assisted self-heating adsorbent provides a new direction for large-scale cleanup and recycling of viscous crude oil spill on the seawater surface.
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Affiliation(s)
- Jiajun Chen
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Ming Sun
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Yimeng Ni
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Tianxue Zhu
- Qingyuan Innovation Laboratory, Quanzhou 362801, PR China
| | - Jianying Huang
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China; Qingyuan Innovation Laboratory, Quanzhou 362801, PR China
| | - Xiao Li
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China
| | - Yuekun Lai
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, PR China; Qingyuan Innovation Laboratory, Quanzhou 362801, PR China.
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19
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Han X, Ke Y, Wu Y, Huang J, Xu W, Wang Y. Surface modification of silk fibroin powder and its application in oil–water separation. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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20
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Guan Y, Wang Z, Bao M, Chen X, Dong L, Shen Y, Li Y. Multi-energies assisted and all-weather recovery of crude oil by superhydrophobic melamine sponge. JOURNAL OF HAZARDOUS MATERIALS 2023; 443:130131. [PMID: 36240586 DOI: 10.1016/j.jhazmat.2022.130131] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 09/26/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Efficient and safe recovery of high-viscosity marine crude oil spills is still a worldwide challenge. High-viscosity crude oil is difficult to be removed by traditional adsorbent materials. Although some recent developments in photothermal or electric-thermal oil-absorbing materials, the vertical heat transfer inside and the potential hazard of electrical leakage are difficult to be guaranteed. In order to overcome these problems, we polymerized dopamine (DA) in situ on the skeleton surface of the commercial melamine sponge (MS), and further coated the full-wavelength light-absorbing Fe3O4 NPs-Graphene (HF-G) on it to obtain the superhydrophobic sponge with excellent photothermal conversion effect, heat conductivity and magnetic heating capabilities (HF-G/PDA@MS). When the thickness of sponge is 5 mm, the HF-G/PDA@MS shows excellent vertical heat conductivity ability, and can absorb about 80 g/g. It also can be combined with an extra electric-heating device to achieve continuous heating to reduce the viscosity and recover crude oil at night or extreme weather. In addition, the temperature of HF-G/PDA@MS can reach about 40 °C by electromagnetic induction heater, indicating that we can use multiple energies-assisted modes to heat the HF-G/PDA@MS to. This work provides a promising solution and theoretical support for all-weather solving offshore crude oil spills pollution and recovery.
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Affiliation(s)
- Yihao Guan
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Zhining Wang
- Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan 250100, PR China
| | - Mutai Bao
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Xiuping Chen
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Limei Dong
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Yun Shen
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China
| | - Yiming Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System/Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, 266100, Qingdao, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, PR China.
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21
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Peng D, Li W, Liang X, Zheng L, Guo X. Enzymatic preparation of hydrophobic biomass with one-pot synthesis and the oil removal performance. J Environ Sci (China) 2023; 124:105-116. [PMID: 36182120 DOI: 10.1016/j.jes.2021.10.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 06/16/2023]
Abstract
Oil pollution is causing deleterious damage to aquatic ecosystems and human health. The utilization of agricultural waste such as corn stalk (CS) to produce biosorbents has been considered an ecofriendly and efficient approach for removing oil. However, most previous studies focused on the modification of the whole CS, which is inefficient due to the heterogeneity of CS. In this study, corn stalk pith (CP), which has excellent amphipathic characteristics, was selected to prepare a high-efficiency oil sorbent by grafting dodecyl gallate (DG, a long-chain alkyl) onto CP surface lignin via laccase mediation. The modified biomass (DGCP) shows high hydrophobicity (water contact angle = 140.2°) and superoleophilicity (oil contact angle = 0°) and exhibits a high oil sorption capacity (46.43 g/g). In addition, DGCP has good stability and reusability for adsorbing oil from the aqueous phase. Kinetic and isotherm models and two-dimensional correlation spectroscopy integrated with FTIR analyses revealed that the main sorption mechanism involves the H-bond effect, hydrophobic effect and van der Waals force. This work provides an ecofriendly method to prepare oil sorbents and new insights into the mechanisms underlying the removal of spilled oil from wastewater.
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Affiliation(s)
- Dan Peng
- Department of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China
| | - Wenjie Li
- Department of Transportation and Environment, Shenzhen Institute of Information Technology, Shenzhen 518172, China; School of Earth and Environment, Anhui University of Science & Technology, Huainan 232001, China
| | - Xujun Liang
- School of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China; Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 481092125, USA.
| | - Liuchun Zheng
- School of Environment, South China Normal University, Guangzhou Higher Education Mega Center, Guangzhou 510006, China
| | - Xuetao Guo
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.
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22
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Jha S, Gaur R, Shahabuddin S, Tyagi I. Biochar as Sustainable Alternative and Green Adsorbent for the Remediation of Noxious Pollutants: A Comprehensive Review. TOXICS 2023; 11:toxics11020117. [PMID: 36850992 PMCID: PMC9960059 DOI: 10.3390/toxics11020117] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 05/24/2023]
Abstract
The current water crisis necessitates the development of new materials for wastewater treatment. A variety of nanomaterials are continuously being investigated for their potential as adsorbents for environmental remediation. Researchers intend to develop a low-cost, simple, and sustainable material that can cater to removal of pollutants. Biochar derived from biowaste is a potential candidate for the existing problem of water pollution. The review focuses on the various aspects of biochar, such as its sources, preparation methods, mechanism, applications for wastewater treatment, and its regeneration. Compared with other adsorbents, biochar is considered as an environmentally friendly, sustainable, and cost-effective substitute for waste management, climate protection, soil improvement, wastewater treatment, etc. The special properties of biochar such as porosity, surface area, surface charge, and functional groups can be easily modified by various chemical methods, resulting in improved adsorption properties. Therefore, in view of the increasing environmental pollution and the problems encountered by researchers in treating pollutants, biochar is of great importance. This review also highlights the challenges and prospective areas that can be explored and studied in more detail in the future.
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Affiliation(s)
- Stuti Jha
- Department of Chemistry, School of Energy Technology, Pandit Deendayal Energy University, Knowledge Corridor, Raisan, Gandhinagar 382426, Gujarat, India
| | - Rama Gaur
- Department of Chemistry, School of Energy Technology, Pandit Deendayal Energy University, Knowledge Corridor, Raisan, Gandhinagar 382426, Gujarat, India
| | - Syed Shahabuddin
- Department of Chemistry, School of Energy Technology, Pandit Deendayal Energy University, Knowledge Corridor, Raisan, Gandhinagar 382426, Gujarat, India
| | - Inderjeet Tyagi
- Centre for DNA Taxonomy, Molecular Systematics Division, Zoological Survey of India, Ministry of Environment, Forests and Climate Change, Kolkata 700053, West Bengal, India
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23
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Bélanger N, Prasher S, Dumont MJ. Tailoring biochar production for use as a reinforcing bio-based filler in rubber composites: a review. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2022.2089584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Nicole Bélanger
- Bioresource Engineering Department, McGill University, QC, Canada
| | - Shiv Prasher
- Bioresource Engineering Department, McGill University, QC, Canada
| | - Marie-Josée Dumont
- Bioresource Engineering Department, McGill University, QC, Canada
- Chemical Engineering Department, Université Laval, QC, Canada
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24
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Ubah PC, Dashti AF, Saaid M, Imam SS, Adnan R. Fabrication and response optimization of Moringa oleifera-functionalized nanosorbents for the removal of diesel range organics from contaminated water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:4462-4484. [PMID: 35969341 DOI: 10.1007/s11356-022-22245-z] [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: 02/07/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
The purpose of this research is to synthesize environmentally friendly nanosorbents for the novel adsorption of diesel range organics (DRO) from contaminated water. Central composite design (CCD) analysis of response surface methodology (RSM) was employed in a model fitting of the variables predicting the adsorption efficiency of Moringa oleifera-functionalized zerovalent iron particles (ZINPs) for the removal of DRO. The effects of the reaction parameters on the response were screened using 24 factorial designs to determine the statistically significant independent variables. A quadratic model predicting the DRO adsorption efficiency of ZINPs with an F value of 276.84 (p value < 0.0001) was developed. Diagnostic plots show that the predicted values were in excellent agreement with actual experimental values (R2 = 0.99). The maximum percentage removal of DRO of 92.6% was achieved after optimization, using the synthesized ZINPs after 8 h of contact between DRO substrates and ZINPs at pH of 8, the temperature of 25 °C, with an adsorbent dosage of 2 g/L and at composite desirability of 1. Characterization of ZINPs revealed the formation of quasi nanospheres and nanocubes with an average particle diameter of 50.9 ± 9.7, a crystallite size of 15.31 nm, a crystallinity index of 32.47% and a pore width of 75.69-88.59 nm. The adsorption equilibrium data modelling of ZINPs for adsorption of DRO was best described by Langmuir isotherm with the maximum monolayer coverage capacity of 7.194 mg/g. The separation factor [Formula: see text], indicated favourable adsorption. The adsorption kinetic data were consistent with pseudo-second-order kinetics indicating probable chemisorption.
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Affiliation(s)
- Promise Chima Ubah
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
- Department of Industrial Chemistry, Federal University of Technology, Imo State, Owerri, PMB 1526, Nigeria
| | | | - Mardiana Saaid
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia
| | - Saifullahi Shehu Imam
- Department of Pure and Industrial Chemistry, Bayero University, Kano, P.M.B 3011, Nigeria
| | - Rohana Adnan
- School of Chemical Sciences, Universiti Sains Malaysia, 11800, Penang, Malaysia.
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25
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Makvandi F, Alijani H, Taghavi M, Rastegarzadeh S. High-performance removal of phenol from aqueous solutions using EG- and PEG-functionalized biochar: equilibrium, kinetic and thermodynamic study with optimization by response surface methodology (RSM). RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04935-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Rodrigo PM, Navarathna C, Pham MTH, McClain SJ, Stokes S, Zhang X, Perez F, Gunatilake SR, Karunanayake AG, Anderson R, Thirumalai RVKG, Mohan D, Pittman CU, Mlsna TE. Batch and fixed bed sorption of low to moderate concentrations of aqueous per- and poly-fluoroalkyl substances (PFAS) on Douglas fir biochar and its Fe 3O 4 hybrids. CHEMOSPHERE 2022; 308:136155. [PMID: 36099986 DOI: 10.1016/j.chemosphere.2022.136155] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 08/17/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Per- and poly-fluoroalkyl substances (PFAS) can cause deleterious effects at low concentrations (70 ng/L). Their remediation is challenging. Aqueous μg/L levels of PFOS, PFOS, PFOSA, PFBS, GenX, PFHxS, PFPeA, PFHxA, and PFHpA (abbreviations defined in Table 1) multi-component adsorption (pH dependence, kinetics, isotherms, fixed-bed adsorption, regeneration, complex matrix) was studied on commercial Douglas fir biochar (BC) and its Fe3O4-containing BC. BC is a waste product when syn-gas is produced in a large scale from wet Douglas fir wood fed to gasification at 900-1000 °C and held for 1-20 s. This generates a relatively high surface area (∼700 m2/g) and large pore volume (∼0.25 cm3/g) biochar. Treatment of BC with FeCl3/FeSO4 and NaOH to chemically precipitate Fe3O4 onto BC. BC and its magnetic Fe3O4/BC analogue rapidly adsorbed (20-45 min equilibrium time) significant amounts of PFOS (∼14.6 mg/g) and PFOA (∼652 mg/g) at natural waters' pH range (6-8). Adsorption from μg/L concentrations has produced remediated aqueous PFAS concentrations of ∼50 ng/L or below the detection limits, which is closing in on EPA advisory limits. Column capacities of PFOS were 215.3 mg/g on BC and 51.9 mg/g Fe3O4/BC vs 53.0 mg/g and 21.8 mg/g, respectively, for PFOA. Hydrophobic and electrostatic interactions are thought to drive this sorption. Successful stripping regeneration by methanol was achieved. Thus, hydrophobic Douglas fir biochar produced by fast high temperature pyrolysis and its Fe3O4/BC analogue are adsorbent candidates for PFAS remediation from the dilute PFAS concentrations often found in polluted environments. Small Fe3O4/BC particles can be magnetically removed from batch treatments avoiding filtration.
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Affiliation(s)
- Prashan M Rodrigo
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Chanaka Navarathna
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Michael T H Pham
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Sarah J McClain
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Sean Stokes
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Xuefeng Zhang
- Department of Sustainable Bioproducts, Mississippi State University, Box 9820, Mississippi State, MS, 39762, USA
| | - Felio Perez
- Material Science Lab, Integrated Microscopy Center, University of Memphis, Memphis, TN, 38152, USA
| | - Sameera R Gunatilake
- College of Chemical Sciences, Institute of Chemistry Ceylon, Rajagiriya, CO, 10100, Sri Lanka
| | | | | | - Rooban V K G Thirumalai
- Institute of Imaging and Analytic Technology (I2AT), Mississippi State University, Mississippi State, MS, 39762, USA
| | - Dinesh Mohan
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA
| | - Todd E Mlsna
- Department of Chemistry, Mississippi State University, Mississippi State, MS, 39762-9573, USA.
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Lauric Acid Treatments to Oxidized and Control Biochars and Their Effects on Rubber Composite Tensile Properties. Mol Vis 2022. [DOI: 10.3390/c8040058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Biochar is a renewable source of carbon that can partially replace carbon black as filler in rubber composites. Since the carbon content of biochar is less pure than carbon black, improvements and modifications must be made to biochar to make it a viable co-filler. In this work, two methods to change the surface chemistry of biochar were employed: (1) gas treatment at 300 °C with either air or carbon dioxide, and (2) coating with lauric acid. Both methods are amenable to the current rubber processing industry. After biochar was treated with these methods, it was used as co-filler in rubber composite samples. Gas treatment with either air or carbon dioxide was found to increase stiffness in the final composites. Although lauric acid coating of biochar by itself did not have a significant effect on tensile properties, biochar that was first treated with carbon dioxide and then coated with lauric acid showed a 19% increase in tensile strength and a 48% increase in toughness. Gas treatment and lauric acid coating of biochar provide relatively simple processing techniques to improve the stiffness and tensile strength of biochar as rubber composite filler.
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28
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Bianco F, Marcińczyk M, Race M, Papirio S, Esposito G, Oleszczuk P. Low temperature–produced and VFA–coated biochar enhances phenanthrene adsorption and mitigates toxicity in marine sediments. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Remediation of Aqueous Phosphate Agricultural Runoff Using Slag and Al/Mg Modified Biochar. Processes (Basel) 2022. [DOI: 10.3390/pr10081561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Slag and Al/Mg oxide modified Douglas fir biochar (AMOB) were compared for their phosphate adsorbing abilities for use individually or in combination for simulated agriculture run-off remediation in wetlands. Aqueous batch and column sorption experiments were performed for both low-cost materials. AMOB was prepared in bulk using a novel green method. Material analyses included XRD, elemental analysis, SEM, EDX, and BET. Biochar and slag have different phosphate removal mechanisms. In short residence times (≤2 h), adsorption phenomena dominate for both adsorbents. Surface area likely plays a role in adsorption performance; slag was measured to be 4.1 m2/g while biochar’s surface area was 364.1 m2/g. In longer residence times (>2 h), the slow leaching of metals (Ca, Al, and Mg) from slag continue to remove phosphate through the precipitation of metal phosphates. In 24 h, slag removed more free phosphate from the solution than AMOB. Preliminary fixed bed column adsorption of slag or AMOB alone and in tandem was performed adopting a scaled-up model that can be used to remediate agricultural runoff with high phosphate content. Additionally, a desorption study was performed to analyze the efficiency of material regeneration. While AMOB does not release any adsorbed phosphates, slag slowly releases 5.7% adsorbed phosphate over seven days.
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Weidner E, Karbassiyazdi E, Altaee A, Jesionowski T, Ciesielczyk F. Hybrid Metal Oxide/Biochar Materials for Wastewater Treatment Technology: A Review. ACS OMEGA 2022; 7:27062-27078. [PMID: 35967031 PMCID: PMC9366942 DOI: 10.1021/acsomega.2c02909] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 07/21/2022] [Indexed: 05/27/2023]
Abstract
This paper discusses the properties of metal oxide/biochar systems for use in wastewater treatment. Titanium, zinc, and iron compounds are most often combined with biochar; therefore, combinations of their oxides with biochar are the focus of this review. The first part of this paper presents the most important information about biochar, including its advantages, disadvantages, and possible modification, emphasizing the incorporation of inorganic oxides into its structure. In the next four sections, systems of biochar combined with TiO2, ZnO, Fe3O4, and other metal oxides are discussed in detail. In the next to last section probable degradation mechanisms are discussed. Literature studies revealed that the dispersion of a metal oxide in a carbonaceous matrix causes the creation or enhancement of surface properties and catalytic or, in some cases, magnetic activity. Addition of metallic species into biochars increases their weight, facilitating their separation by enabling the sedimentation process and thus facilitating the recovery of the materials from the water medium after the purification process. Therefore, materials based on the combination of inorganic oxide and biochar reveal a wide range of possibilities for environmental applications in aquatic media purification.
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Affiliation(s)
- Ewelina Weidner
- Poznan
University of Technology, Faculty of Chemical
Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Elika Karbassiyazdi
- University
of Technology Sydney, School of Civil
and Environmental Engineering, Centre of Green Technology, 15 Broadway, Ultimo
NSW Sydney, New South Wales 2007, Australia
| | - Ali Altaee
- University
of Technology Sydney, School of Civil
and Environmental Engineering, Centre of Green Technology, 15 Broadway, Ultimo
NSW Sydney, New South Wales 2007, Australia
| | - Teofil Jesionowski
- Poznan
University of Technology, Faculty of Chemical
Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
| | - Filip Ciesielczyk
- Poznan
University of Technology, Faculty of Chemical
Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland
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Abstract
The continuing increase in population means an increasing demand for products and services, resulting in huge amounts of waste being discharged into the environment. Therefore, waste management requires the application of new and innovative solutions. One new approach involves converting waste into value-added chemicals and products for use directly or after further processing into higher value-added products. These processes include biological, thermochemical, and physiochemical methods. Furthermore, biosolids, including treated sewage sludge (SS), represent one of the major by-products of human activities, constituting a major environmental hazard and requiring the treatment of contaminated wastewater with associated health hazards. Sustainable solutions to manage and dispose of this type of waste are required. In this review, pyrolysis, a thermochemical conversion technology, is explored to convert biosolids to biochars. The review addresses previous studies, by providing a critical discussion on the present status of biosolids processing, the potential for energy recovery from the pyrolysis bio-oil and biogas, and finally some benefits of the production of biochars from biosolids.
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Abstract
Nowadays, biochar is being studied to a great degree because of its potential for carbon sequestration, soil improvement, climate change mitigation, catalysis, wastewater treatment, energy storage, and waste management. The present review emphasizes on the utilization of biochar and biochar-based nanocomposites to play a key role in decontaminating dyes from wastewater. Numerous trials are underway to synthesize functionalized, surface engineered biochar-based nanocomposites that can sufficiently remove dye-contaminated wastewater. The removal of dyes from wastewater via natural and modified biochar follows numerous mechanisms such as precipitation, surface complexation, ion exchange, cation–π interactions, and electrostatic attraction. Further, biochar production and modification promote good adsorption capacity for dye removal owing to the properties tailored from the production stage and linked with specific adsorption mechanisms such as hydrophobic and electrostatic interactions. Meanwhile, a framework for artificial neural networking and machine learning to model the dye removal efficiency of biochar from wastewater is proposed even though such studies are still in their infancy stage. The present review article recommends that smart technologies for modelling and forecasting the potential of such modification of biochar should be included for their proper applications.
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Effective oil spill cleaned up with environmentally friendly foams filled with eucalyptus charcoal residue. IRANIAN POLYMER JOURNAL 2022. [DOI: 10.1007/s13726-021-00997-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Petroleum products are hazardous both for humans and nature. Diesel oil is one of the main contaminants of land but also of sea, during its transportation. Currently, there are many different clean-up techniques for petroleum products. One of the most common is adsorption by adsorbent materials. Although adsorption is an eco-friendly and cost-effective approach, it lacks efficiency. The present study investigates the performance of low-cost activated carbon, derived from potato peels and activated under different temperature conditions, from 350 °C to 800 °C. The yield of activated carbon decreases with the increase in the carbonization temperature. However, the sample prepared at 600 °C shows an oil sorption capacity of 72 g/g, which is the highest of all samples. Nitrogen adsorption characterization reveals that this specific sample has the highest specific surface (SSA) area of 1052 m2/g and total a pore volume of 2.959 cm3/g, corresponding to a 94% and 77% increase compared to the sample prepared at 350 °C. Oil sorption kinetics experiments show that, for all samples, the maximum uptake is reached after 1h. Oil uptake was also investigated under realistic conditions by introducing the best performance activated carbon to an oil/seawater system, and the outcome does not show a significant decrease in the oil sorption. The outcomes of this study indicate that low-cost adsorbents from agricultural by-products have strong potential as an oil spill response technique.
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35
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Ye F, Zhang Z, Ao Y, Li B, Chen L, Shen L, Feng X, Yang Y, Yuan H, Mi Y. Demulsification of water-in-crude oil emulsion driven by a carbonaceous demulsifier from natural rice husks. CHEMOSPHERE 2022; 288:132656. [PMID: 34710449 DOI: 10.1016/j.chemosphere.2021.132656] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/02/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Removing emulsified water from a water-in-crude oil (W/O) emulsion is critically required prior to downstream processing in the petroleum industry. In this work, environmentally friendly and amphipathic rice husk carbon (RHC) demulsifier was prepared by a simple carbonization process in a muffle furnace using rice husks as starting materials. RHC was characterized by field-emission scanning electron microscope, energy dispersive spectrometer, Fourier transform infrared spectrometer, ultraviolet-visible spectrometer, powder X-ray diffraction, zeta potential and synchronal thermal analyzer. The factors such as dosage, temperature, settling time, pH value and salinity were systematically investigated. The results indicated that the dehydration efficiency (DE) reached as high as 96.99% with 600 mg/L of RHC for 80 min at 70 °C. RHC exhibited an optimal DE under neutral condition, but it was also effective under acidic and alkaline conditions. Also, it had an excellent salt tolerance. The possible demulsification mechanism was explored by interfacial properties, different treatment methods for RHC and microexamination. The demulsification of RHC is attributed to its high interfacial activity, oxygen-containing groups and content of silica. It indicates that RHC is an effective demulsifier for the treatment of the W/O emulsion.
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Affiliation(s)
- Fan Ye
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Zejun Zhang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yiling Ao
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Bin Li
- Xinjiang Tarim Oilfield Construction Engineering Co., Ltd., PetroChina Tarim Oilfield Company, Korla, 841000, PR China
| | - Lihan Chen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Liwei Shen
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Xuening Feng
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Ying Yang
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Huaikui Yuan
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China
| | - Yuanzhu Mi
- School of Chemistry & Environmental Engineering, Yangtze University, Jingzhou, 434023, PR China.
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36
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Rangabhashiyam S, Lins PVDS, Oliveira LMTDM, Sepulveda P, Ighalo JO, Rajapaksha AU, Meili L. Sewage sludge-derived biochar for the adsorptive removal of wastewater pollutants: A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 293:118581. [PMID: 34861332 DOI: 10.1016/j.envpol.2021.118581] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 10/18/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
The production of biochar from sewage sludge pyrolysis is a promising approach to transform the waste resultant from wastewater treatment plants (WWTPs) to a potential adsorbent. The current review provides an up-to-date review regarding important aspects of sewage sludge pyrolysis, highlighting the process that results major solid fraction (biochar), as high-value product. Further, the physio-chemical characteristics of sewage-sludge derived biochar such as the elemental composition, specific surface area, pore size and volume, the functional groups, surface morphology and heavy metal content are discussed. Recent progress on adsorption of metals, emerging pollutants, dyes, nutrients and oil are discussed and the results are examined. The sewage sludge-derived biochar is a promising material that can make significant contributions on pollutants removal from water by adsorption and additional benefit of the management of huge volume of sewage. Considering all these aspects, this field of research still needs more attention from the researchers in the direction of the technological features and sustainability aspects.
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Affiliation(s)
- S Rangabhashiyam
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, 613401, Tamilnadu, India
| | | | | | - Pamela Sepulveda
- Centro para el Desarrollo de Nanociencia y Nanotecnología CEDENNA, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile; Departamento de Física, Facultad de Ciencias, Universidad de Santiago de Chile, Santiago, Chile
| | - Joshua O Ighalo
- Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria; Department of Chemical Engineering, Nnamdi Azikiwe University, Awka, Nigeria
| | - Anushka Upamali Rajapaksha
- Instrument Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Ecosphere Resilience Research Center, University of Sri Jayewardenepura, Nugegoda, 10250, Sri Lanka
| | - Lucas Meili
- Laboratory of Process, Technology Center, Federal University of Alagoas, Maceió-AL, Brazil.
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Herath A, Navarathna C, Warren S, Perez F, Pittman CU, Mlsna TE. Iron/titanium oxide-biochar (Fe 2TiO 5/BC): A versatile adsorbent/photocatalyst for aqueous Cr(VI), Pb 2+, F - and methylene blue. J Colloid Interface Sci 2022; 614:603-616. [PMID: 35123214 DOI: 10.1016/j.jcis.2022.01.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/22/2021] [Accepted: 01/10/2022] [Indexed: 12/19/2022]
Abstract
This is the first report of the metal Fe-Ti oxide/biochar (Fe2TiO5/BC) composite for simultaneous removal of aqueous Pb2+, Cr6+, F- and methylene blue (MB). Primary Fe2TiO5 nano particles and aggregates were dispersed on a high surface area Douglas fir BC (∼700 m2/g) by a simple chemical co-precipitation method using FeCl3 and TiO(acac)2 salts treated by base and heated to 80 °C. This was followed by calcination at 500 °C. This method previously was used without BC to make the neat mixed oxide Fe2TiO5, exhibiting a lower energy band gap than TiO2. Adsorption of Cr(VI), Pb(II), fluoride, and MB on Fe2TiO5/BC was studied as a function of pH, equilibrium time, initial adsorbate concentration, and temperature. Adsorption isotherm studies were conducted at 5, 25, and 45 ℃ and kinetics for all four adsorbates followed the pseudo second order model. Maximum Langmuir adsorption capacities for Pb2+, Cr6+, F- and MB at their initial pH values were 141 (pH 2), 200 (pH 5), 36 (pH 6) and 229 (pH 6) mg/g at 45 ℃ and 114, 180, 26 and 210 mg/g at 25 ℃, respectively. MB was removed from the water on Fe2TiO5/BC by synergistic adsorption and photocatalytic degradation at pH 3 and 6 under UV (365 nm) light irradiation. Cr6+, Pb2+, F-, and MB each exhibited excellent removal capacities in the presence of eight different competitive ions in simulated water samples. The removal mechanisms on Fe2TiO5/BC and various competitive ion interactions were proposed. Some iron ion leaching at pH 3 catalyzed Photo-Fenton destruction of MB. Fe2TiO5, BC, and Fe2TiO5/BC bandgaps were studied to help understand photocatalysis of MB and to advance supported metal oxide photodegradation using smaller energy band gaps than the larger bandgap of TiO2 for water treatment. A long range goal is to photocatalytically destroy some sorbates with adsorbents to avoid the need for regeneration steps.
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Affiliation(s)
- Amali Herath
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Chanaka Navarathna
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Shannon Warren
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Felio Perez
- Material Science Lab, Integrated Microscopy Center, University of Memphis, Memphis, TN 38152, USA
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA
| | - Todd E Mlsna
- Department of Chemistry, Mississippi State University, Mississippi State, MS 39762, USA.
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38
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Ren L, Hao B, Fang W, Zhang D, Cheng H, Li Q, Yan D, Li Y, Wang Q, Zhou Z, Jin X, Cao A. Combination of modified biochar and polyurea microcapsules to co-encapsulate a fumigant via interface polymerization for controlled release and enhanced bioactivity. PEST MANAGEMENT SCIENCE 2022; 78:73-85. [PMID: 34432938 DOI: 10.1002/ps.6609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Soil fumigants-the most effective agrochemicals for managing soil-borne diseases-have been used extensively. However, high volatility, moderate toxicity and insufficient effective duration considerably limit their application. In the present study, interface polymerization was used to combine modified biochar (BC) and polyurea microcapsules (MCs) to co-encapsulate allyl isothiocyanate (AITC), developing a model fumigant for controlled release (AITC@BC-MCs). RESULTS The physical characteristics of BC modified by sand-milling were significantly improved. In addition, chemical properties and morphological features of AITC@BC-MCs characterized by integrated methods revealed successful preparation of BC-MCs. Compared with monolayer MCs, BC-MCs could significantly delay AITC release owing to the composite obstruction effect. Moreover, modifying BC endowed the cargo molecules with a pH-responsive release property. Additionally, this composite showed a longer persistent duration by prolonging AITC degradation half-life, which was 3.2-3.5-fold greater than that of the AITC technical concentrate under different soil conditions. Finally, the control efficacy of the AITC@BC-MC against pathogens, including nematodes and fungi, as well as against weeds was significantly enhanced at the same dose, but the composite did not inhibit seed germination and growth after 10 days when fumigated soil was aerated. CONCLUSION Construction of a composite encapsulation system enhanced pesticide efficacy, reduced dose via controlled release and delayed fumigant degradation in soil, indicating the great potential of this strategy for developing an effective and environmentally friendly fumigant formulation. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Lirui Ren
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Science, China Agricultural University, Beijing, China
| | - Baoqiang Hao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Wensheng Fang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Daqi Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongyan Cheng
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qingjie Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dongdong Yan
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuan Li
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Qiuxia Wang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zhiqiang Zhou
- College of Science, China Agricultural University, Beijing, China
| | - Xi Jin
- Joint Center of Soil Remediation of Baoding University and Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Baoding, China
| | - Aocheng Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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39
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Shariati S, Rajib AI, Fini EH. A multifunctional bio-agent for extraction of aged bitumen from siliceous surfaces. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.08.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Effects of CoMo/γ-Al2O3 Catalysts on Product Hydrocarbon and Phenol Distribution during Hydrodeoxygenation of Oxidized Bio-Oil in a Batch Reactor. Processes (Basel) 2021. [DOI: 10.3390/pr9122138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Hydrodeoxygenation is an essential process for producing liquid transportation fuels. In this study, the effects of CoMo/γ-Al2O3 catalysts form and loading ratio on the hydrodeoxygenation upgrading of bio-oil were investigated in a batch reactor. Raw bio-oil was first oxidized with hydrogen peroxides and oxone to obtain the oxidized bio-oil with reduced levels of aldehydes and ketones, increasing the organic liquid yield during hydrodeoxygenation by suppressing the coke formation. CoMo/γ-Al2O3 was selected as the catalyst because of its low cost and commercial availability. The effect of the reduction and sulfidation of CoMo/γ-Al2O3 catalyst on the hydrodeoxygenation of the oxidized bio-oil was compared. The effect of the catalyst loading ratio on bio-oil hydrodeoxygenation using sulfided CoMo/γ-Al2O3 catalysts was also investigated. The research results showed that the sulfided CoMo/γ-Al2O3 catalyst facilitated the formation of hydrocarbons, while the reduced CoMo/γ-Al2O3 catalyst produced more phenols in the organic liquids. Moreover, a high sulfided catalyst loading ratio promoted the formation of hydrocarbons.
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41
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Madhubashani AMP, Giannakoudakis DA, Amarasinghe BMWPK, Rajapaksha AU, Pradeep Kumara PBT, Triantafyllidis KS, Vithanage M. Propensity and appraisal of biochar performance in removal of oil spills: A comprehensive review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 288:117676. [PMID: 34265555 DOI: 10.1016/j.envpol.2021.117676] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/17/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
Recently, the adsorption-based environmental remediation techniques have gained a considerable attention, due to their economic viability and simplicity over other methods. Hence, detailed presentation and analysis were herein focused on describing the role of biochar in oil spill removal. Oil removal by utilizing biochar is assumed as a green-oriented concept. Biochar is a carbon-rich low-cost material with high porosity and specific surface chemistry, with a tremendous potentiality for oil removal from aqueous solutions. Oil sorption properties of biochar mainly depend on the biochar production/synthesis method, and the biomass feedstock type. In order to preserve the stability of functional groups in the structure, biochar needs to be produced/activated at low temperatures (<700 ᵒC). In general, biochar derived from biomass containing high lignin content via slow pyrolysis is more favorable for oil removal. Exceptional characteristics of biochar which intensify the oil removal capability such as hydrophobicity, oleophilicity or/and specific contaminant-surface interaction of biochar can be enhanced and be tuned by chemical and physical activation methods. Considering all the presented results, future perspectives such as the examination of biochar efficacy on oil removal efficiency in multi-element contaminated aqueous solutions to identify the best biomass feedstocks, the production protocols and large-scale field trials, are also discussed.
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Affiliation(s)
- A M P Madhubashani
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Department of Chemical and Process Engineering, University of Moratuwa, Moratuwa, Sri Lanka
| | - Dimitrios A Giannakoudakis
- Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland; Department of Chemistry, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece
| | - B M W P K Amarasinghe
- Department of Chemical and Process Engineering, University of Moratuwa, Moratuwa, Sri Lanka
| | - Anushka Upamali Rajapaksha
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Instrument Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka
| | - P B Terney Pradeep Kumara
- Department of Oceanography and Marine Geology, University of Ruhuna, Matara, Sri Lanka; Marine Environment Protection Authority, No 177, Nawala Road, Narahenpita, Colombo 05, Sri Lanka
| | | | - Meththika Vithanage
- Ecosphere Resilience Research Centre, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka; Instrument Center, Faculty of Applied Sciences, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
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Zhu Y, Du Y, Su J, Mo Y, Yu S, Wang Z. Durable superhydrophobic melamine sponge based on polybenzoxazine and Fe3O4 for oil/water separation. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119130] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kim H, Zhang G, Wu M, Guo J, Nam C. Highly efficient and recyclable polyolefin-based magnetic sorbent for oils and organic solvents spill cleanup. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126485. [PMID: 34323724 DOI: 10.1016/j.jhazmat.2021.126485] [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: 03/09/2021] [Revised: 06/07/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
The oil dispersants have been applied in a broad oil pollution area, but the dispersed oil caused environmental problems during sedimentation. Unlike oil dispersants, flake type polyolefin-based oil absorbent (PA) is not emulsified and shows excellent swelling characteristic for oil removal. However, the sprayed PA flakes cannot be fully collected due to its tiny architectures, the uncollected flakes can cause unintentional secondary pollution. In this study, we develop a kind of flake type polyolefin-based magnetic absorbent (PMA) hybridized with magnetic nanoparticle, to facilitate the collection process. The magnetic nanoparticle is uniformly dispersed in PMA due to the hydrophobic functionalization of iron oxide nanoparticle. This enables the convenient collection of isolated sorbent flakes even when they were placed in the marine system and show a desirable oil recovery performance up to about 37 times for organic solvent. Moreover, oil-soaked PMA flakes can be fully converted into refined oil via a pyrolysis process. After pyrolysis, the thermally undecomposed compounds, which comprise of carbon residue and magnetic nanoparticle, can be also separated by a magnet. The as-prepared flake type PMA possesses good oil recovery performance, fast magnetic response, and efficient oil recycling, thus representing an environmentally promising method for oil spill cleanup.
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Affiliation(s)
- Hyeongoo Kim
- Organic Materials and Fiber Engineering, Jeonbuk National University, 567 Baekje-daero, Deogjin-dong, Deokjin-gu, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Gang Zhang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, United States
| | - Min Wu
- Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Jinshan Guo
- Department of Histology and Embryology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Changwoo Nam
- Organic Materials and Fiber Engineering, Jeonbuk National University, 567 Baekje-daero, Deogjin-dong, Deokjin-gu, Jeonju, Jeollabuk-do 54896, Republic of Korea.
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Gurav R, Bhatia SK, Choi TR, Choi YK, Kim HJ, Song HS, Park SL, Lee HS, Lee SM, Choi KY, Yang YH. Adsorptive removal of crude petroleum oil from water using floating pinewood biochar decorated with coconut oil-derived fatty acids. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 781:146636. [PMID: 33784526 DOI: 10.1016/j.scitotenv.2021.146636] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 03/13/2021] [Accepted: 03/17/2021] [Indexed: 05/12/2023]
Abstract
The present investigation deals with the adsorptive removal of crude petroleum oil from the water surface using coconut oil-modified pinewood biochar. Biochar generated at higher pyrolysis temperature (700 °C) revealed higher fatty acid-binding efficiency responsible for the excellent hydrophobicity of the biochar. Fatty acids composition attached to the biochar produced at 700 °C was (mg g-1 BC) lauric acid (9.024), myristic acid (5.065), palmitic acid (2.769), capric acid (1.639), oleic acid (1.362), stearic acid (1.114), and linoleic acid (0.130). Simulation of the experimental adsorption data of pristine and modified pinewood biochar generated at 700 °C offered the best fit to pseudo-first-order kinetics (R2 > 0.97) and Langmuir isotherm model (R2 > 0.99) based on the highest regression coefficients. Consequently, the adsorption process was mainly driven by surface hydrophobic interactions including π-π electron-donor-acceptor between electron-rich (π-donor) polycyclic aromatic hydrocarbons from the crude oil and biochar (π-acceptor). A maximum adsorption capacity (Qmax) of 5.315 g g-1 was achieved by modified floating biochar within 60 min. Whereas the reusability testing revealed 49.39% and 51.40% was the adsorption efficiency of pristine and modified biochar at the fifth adsorption-desorption cycle.
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Affiliation(s)
- Ranjit Gurav
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Shashi Kant Bhatia
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Tae-Rim Choi
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Yong-Keun Choi
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hyun Joong Kim
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hun-Suk Song
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sol Lee Park
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Hye Soo Lee
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Sun Mi Lee
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea
| | - Kwon-Young Choi
- Department of Environmental and Safety Engineering, College of Engineering, Ajou University, Suwon, Gyeonggi-do 16499, Republic of Korea
| | - Yung-Hun Yang
- Department of Biological Engineering, College of Engineering, Konkuk University, Seoul 05029, Republic of Korea.
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A Comprehensive Characterization of Different Fractions of Corn Stover and Their Relationships to Multipollutant Sorption Characteristics. ADSORPT SCI TECHNOL 2021. [DOI: 10.1155/2021/9988938] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Corn stover (CS) is mainly composed of three parts: pith (CSP), rind (CSR), and leaf (CSL). These parts have different lignocellulosic constituents and structural properties. Herein, biosorbents derived from individual corn stover constituents were prepared in an effort to determine the significance of each constituent for multipollutant removal. In this study, SEM, BET, XRD, FTIR, XPS, fibre composition, and contact angle measurements were used to characterize and analyse the physical and chemical properties of the three components of CS and to study their adsorption effects, adsorption isotherms, and kinetics. The lignocellulosic compositions of CSP and CSR were similar, the cellulose content in CSP and CSR was significantly higher than that in CSL, and the hemicellulose content of CSL was much higher than those of CSP and CSR. The minimum lignin content was found in CSP, and the maximum lignin content was found in CSR. The results show that each component had a certain adsorption effect on typical organic pollutants (antibiotics, oils, and dyes). CSP had the strongest oil adsorption capacity, CSR was more suitable for adsorbing antibiotics, and CSL had outstanding adsorption capacity for dye. The pseudo-second-order model and the Langmuir adsorption isotherm model could describe the adsorption processes well, and they consisted of monolayer adsorption accompanied by chemical adsorption reactions. The focus of this study was to provide references for selecting effective adsorbent precursors to remove organic pollutants from wastewater.
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De Nino A, Olivito F, Algieri V, Costanzo P, Jiritano A, Tallarida MA, Maiuolo L. Efficient and Fast Removal of Oils from Water Surfaces via Highly Oleophilic Polyurethane Composites. TOXICS 2021; 9:186. [PMID: 34437504 PMCID: PMC8402441 DOI: 10.3390/toxics9080186] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/28/2021] [Accepted: 08/02/2021] [Indexed: 11/29/2022]
Abstract
In this study we evaluated the oil adsorption capacity of an aliphatic polyurethane foam (PU 1) and two of its composites, produced through surface coating using microparticles of silica (PU-Si 2) and activated carbon (PU-ac 3). The oil adsorption capacity in diesel was improved up to 36% using the composite with silica and up to 50% using the composite with activated carbon with respect to the initial PU 1. Excellent performances were retained in gasoline and motor oil. The adsorption was complete after a few seconds. The process follows a monolayer adsorption fitted by the Langmuir isotherm, with a maximum adsorption capacity of 29.50 g/g of diesel for the composite with activated carbon (PU-ac 3). These materials were proved to be highly oleophilic for oil removal from fresh water and sea water samples. Regeneration and reuse can be repeated up to 50 times by centrifugation, without a significant loss in adsorption capacity.
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Affiliation(s)
- Antonio De Nino
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (V.A.); (P.C.); (A.J.); (M.A.T.)
| | - Fabrizio Olivito
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (V.A.); (P.C.); (A.J.); (M.A.T.)
| | | | | | | | | | - Loredana Maiuolo
- Department of Chemistry and Chemical Technologies, University of Calabria, 87036 Rende (CS), Italy; (V.A.); (P.C.); (A.J.); (M.A.T.)
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Yao Q, Borjihan Q, Qu H, Guo Y, Zhao Z, Qiao L, Li T, Dong A, Liu Y. Cow dung-derived biochars engineered as antibacterial agents for bacterial decontamination. J Environ Sci (China) 2021; 105:33-43. [PMID: 34130837 DOI: 10.1016/j.jes.2020.12.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 12/17/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
Disposal of the pollutants arising from farming cattle and other livestock threatens the environment and public safety in diverse ways. Herein, we report on the synthesis of engineered biochars using cow dung as raw material, and investigating these biochars as antibacterial agents for water decontamination. By coating the biochars with N-halamine polymer and loading them with active chlorine (i.e., Cl+), we were able to regulate them on demand by tuning the polymer coating and bleaching conditions. The obtained N-halamine-modified biochars were found to be extremely potent against Escherichia coli and Staphylococcus aureus. We also investigated the possibility of using these N-halamine-modified biochars for bacterial decontamination in real-world applications. Our findings indicated that a homemade filter column packed with N-halamine-modified biochars removed pathogenic bacteria from mining sewage, dairy sewage, domestic sewage, and artificial seawater. This proposed strategy could indicate a new way for utilizing livestock pollutants to create on-demand decontaminants.
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Affiliation(s)
- Quanfu Yao
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China; College of Chemistry and Environment, Hohhot Minzu College, Hohhot 010051, China
| | - Qinggele Borjihan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China
| | - Huihui Qu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China
| | - Yixuan Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Ziying Zhao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Long Qiao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Ting Li
- College of Chemistry and Environment, Hohhot Minzu College, Hohhot 010051, China
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, China.
| | - Ying Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
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Samaraweera H, Sharp A, Edwards J, Pittman CU, Zhang X, Hassan EB, Thirumalai RVKG, Warren S, Reid C, Mlsna T. Lignite, thermally-modified and Ca/Mg-modified lignite for phosphate remediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 773:145631. [PMID: 33940740 DOI: 10.1016/j.scitotenv.2021.145631] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/30/2021] [Accepted: 01/31/2021] [Indexed: 06/12/2023]
Abstract
Aqueous phosphate uptake is needed to reduce global eutrophication. Negatively charged adsorbent surfaces usually give poor phosphate sorption. Chemically- and thermally-modified lignite (CTL) was prepared by impregnating low-cost lignite (RL) with Ca2+ and Mg2+ cations, basified with KOH (pH ̴ 13.9), followed by a 1 h 600 °C pyrolysis under nitrogen. CTL has a positive surface (PZC = 13) due to basic surface Ca and Mg compounds, facilitating the aqueous phosphate uptake. CaCO3, MgO, Ca(OH)2, and Mg(OH)2 surface phases with 0.22 μm particle sizes were verified by XRD, XPS, SEM, TEM, and EDX before and after phosphate uptake. Higher amounts of these mineral phases promoted more CTL phosphate uptake than raw lignite (RL) and thermally treated lignite (TL) without Ca/Mg modification. Phosphorous uptake by Ca2+/Mg2+ occurs not by classic adsorption but by stochiometric precipitation of Mg3(PO4)2, MgHPO4, Ca3(PO4)2, and CaHPO4. This offers the potential of substantial uptake capacities. CTL's phosphate removal is pH-dependent; the optimum pH was 2.2. Water-washed CTL exhibited a maximum Langmuir phosphate uptake capacity of 15.5 mg/g at pH 7, 6 and 14 times higher than that of TL and RL, respectively (particle size <150 μm, adsorbent dose 50 mg, 25 mL of 25-1000 ppm phosphate concentration, 24 h, 25 °C). The unwashed CTL exhibited a maximum Langmuir phosphate removal capacity (80.6 mg/g), 5.2-times greater than the washed CTL (15.5 mg/g). Insoluble Ca2+ and Mg2+ phosphates/hydrophosphate particles dominated CTL's phosphate removal. Phosphates were recovered from both exhausted unwashed and washed CTL better in HCl than in NaOH. P-laden washed CTL exhibited a slow phosphate leaching rate under initial pH of 6.5-7.5 (52-57% over 20 days) after phosphate uptake, indicating it could serve as a slow-release fertilizer. Unwashed CTL retained more phosphates than washed CTL (cumulative qe for 4 cycles = 391.8 mg/g vs 374.7 mg/g) and potentially improves soil fertility more.
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Affiliation(s)
- Hasara Samaraweera
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA
| | - Abigail Sharp
- Department of Engineering Management and Systems Engineering, The George Washington University, Washington, DC, USA
| | - John Edwards
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA
| | - Charles U Pittman
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA
| | - Xuefeng Zhang
- Department of Sustainable Bioproducts, Mississippi State University, Starkville, MS 39762, USA
| | - El Barbary Hassan
- Department of Sustainable Bioproducts, Mississippi State University, Starkville, MS 39762, USA
| | | | - Sita Warren
- Department of Engineering Management and Systems Engineering, The George Washington University, Washington, DC, USA
| | - Claudia Reid
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA
| | - Todd Mlsna
- Department of Chemistry, Mississippi State University, Mississippi State, MS, USA.
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Hu J, Zhou X, Shi Y, Wang X, Li H. Enhancing biochar sorption properties through self-templating strategy and ultrasonic fore-modified pre-treatment: Characteristic, kinetic and mechanism studies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 769:144574. [PMID: 33485197 DOI: 10.1016/j.scitotenv.2020.144574] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 11/20/2020] [Accepted: 12/13/2020] [Indexed: 06/12/2023]
Abstract
The traditional anaerobic sewage treatment facilities are unsuitable for the widely uncontrolled spread of antibiotic residues in hospital or on livestock farm, which have raised the risk levels of high concentrations of antibiotic residues leakages and seriously threatened the aquatic ecology safeties. Thus, to develop an effective adsorbent with safe, low cost, and high firmly adsorptive capacity are imminent required. In this investigated, a self-templating hydrothermal alkali fore-modified & ultrasonic treatment was developed to achieve the highly adsorptive capacity and low desorption rate of biochar. As expected, the prepared biochar adsorbents present plenty of surface functional groups and micro pores. The BET value is raised up 1452 cm2·g-1 for biochar treated by the associated alkali fore-modified and ultrasonic treatment (UFB), whereas it is only 415.8 cm2·g-1 for the biochar treated by traditional carbonization (AC) and 1205 cm2·g-1 for the biochar by further hydrothermal alkali fore-modification (FB). Congruously, UFB exhibits the removal abilities of 397.70 mg·g-1 of levofloxacin (LEV) and 320.99 mg·g-1 of chlorotetracycline (CTC), 3.5-6.3 times absorbability towards familiar antibiotics than traditional biochar. Moreover, the corresponding the lowest desorption of 1.30 mg·g-1 (LEV) and 0.43 mg·g-1 (CTC) mg·g-1 by UFB have been confirmed. Meanwhile, Furthermore, both the adsorption and desorption mechanisms have been addressed by kinetic studies, pore width distributions, XPS and FTIR surveys. It is proposed the fore-modified treatment is more helpful for carbon functionalization while the ultrasonic treatment dedicates to the largely microporous structures. Consequently, the adsorption's capacity and stability of UFB adsorbents is large promoted due to its more micro- and meso-porous structure through a jointly hydrothermal alkali fore-modified and ultrasonic treatment. The present investigation will provide a novel alternative preparation strategy of the highly efficient adsorbent for emergency medical wastewater treatment.
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Affiliation(s)
- Jingtao Hu
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China; Emission Trading Management Center of Inner Mongolia, Hohhot 010011, China
| | - Xin Zhou
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Yexin Shi
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China
| | - Xiaojing Wang
- Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China.
| | - Huiqin Li
- Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau & Inner Mongolia Key Laboratory of Environmental Pollution Control and Waste Resource Recycle, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China.
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Household arsenic contaminated water treatment employing iron oxide/bamboo biochar composite: An approach to technology transfer. J Colloid Interface Sci 2021; 587:767-779. [PMID: 33309243 DOI: 10.1016/j.jcis.2020.11.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/06/2020] [Accepted: 11/08/2020] [Indexed: 11/21/2022]
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