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Bayuo J, Rwiza M, Mtei K. A comprehensive review on the decontamination of lead(ii) from water and wastewater by low-cost biosorbents. RSC Adv 2022; 12:11233-11254. [PMID: 35425067 PMCID: PMC9003363 DOI: 10.1039/d2ra00796g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 03/22/2022] [Indexed: 12/20/2022] Open
Abstract
The disadvantages of conventional methods in water and wastewater management including the demand for high energy consumption, the creation of secondary toxic sludge, and operation cost are much too high for developing countries. However, adsorption using low-cost biosorbents is the most efficient non-conventional technique for heavy metals removal. The high adsorption capacities, cost-effectiveness, and the abundance of agricultural waste materials in nature are the important parameters that explain why these biosorbents are economical for heavy metals removal. The present investigation sought to review the biosorption of lead [Pb(ii)] onto low-cost biosorbents to understand their adsorption mechanism. The review shows that biosorption using low-cost biosorbents is eco-friendly, cost-effective, and is a simple technique for water and wastewater treatment containing lead(ii) ions. The batch biosorption tests carried out in most studies show that Pb(ii) biosorption by the low-cost biosorbents is dependent on biosorption variables such as pH of the aqueous solution, contact time, biosorbent dose, Pb(ii) initial concentration, and temperature. Furthermore, batch equilibrium data have been explored in many studies by evaluating the kinetics, isothermal and thermodynamic variables. Most of the studies on the adsorptive removal of Pb(ii) were found to follow the pseudo-second kinetic and Langmuir isotherm models with the thermodynamics variables suggesting the feasibility and spontaneous nature of Pb(ii) sequestration. However, gaps exist to increase biosorption ability, economic feasibility, optimization of the biosorption system, and desorption and regeneration of the used agricultural biosorbents.
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Affiliation(s)
- Jonas Bayuo
- Department of Materials Science and Engineering, The Nelson Mandela Institution of Science and Technology Postal Box 447 Arusha Tanzania
- Department of Science Education, C. K. Tedam University of Technology and Applied Sciences Postal Box 24, Navrongo, Upper East Region Ghana
| | - Mwemezi Rwiza
- Department of Materials Science and Engineering, The Nelson Mandela Institution of Science and Technology Postal Box 447 Arusha Tanzania
| | - Kelvin Mtei
- Department of Materials Science and Engineering, The Nelson Mandela Institution of Science and Technology Postal Box 447 Arusha Tanzania
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Batch and Packed Bed Column Study for the Removal of Cr (VI) and Ni (II) Using Agro-Industrial Wastes. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11199355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The objective of this study was to prepare bio adsorbents from agro-industrial wastes from yam starch (YSR) and plantain (PSR) production for its use in the removal of Cr (VI) and Ni (II) in aqueous solution in batch and continuous packed-bed column systems. Bromatological analysis showed that the biomaterials are rich in cellulose, lignin, hemicellulose, and SEM micrographs that evidence a mesoporous structure characteristic of materials of lignocellulosic origin. FTIR evidenced functional groups such as hydroxyl, carbonyl, and methyl, possibly involved in the uptake of metal ions. EDS and FTIR analysis after adsorption confirmed that the retention of the metals on the surface of the adsorbent materials was successful. Cr (VI) and Ni (II) removal efficiencies above 80% were achieved using YSR and PSR in batch systems at the different conditions evaluated. The optimum conditions for removing Ni (II) on PSR were a bed height of 11.4 cm and a temperature of 33 °C, while for YSR, they were: 43 °C and 9 cm for temperature and bed height respectively. The variable with the most significant influence on the removal of Cr (VI) in a batch system on the two bio adsorbents was temperature. In contrast, the adsorbent dose and temperature are relevant factors for PSR Ni (II) removal. Therefore, the residues from the preparation of yam and plantain starch have high potential for removing heavy metals from wastewater and are presented as an alternative for their final disposal.
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Medic A, Jakopic J, Solar A, Hudina M, Veberic R. Walnut ( J. regia) Agro-Residues as a Rich Source of Phenolic Compounds. BIOLOGY 2021; 10:535. [PMID: 34203814 PMCID: PMC8232793 DOI: 10.3390/biology10060535] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/07/2021] [Accepted: 06/10/2021] [Indexed: 02/07/2023]
Abstract
The present study was designed to identify and quantify the major phenolic compounds (phenolics) in the inner and outer husks, buds and bark of the Persian walnut, Juglans regia L. A comparison across six different cultivars grown in Slovenia was also carried out: 'Fernor', 'Fernette', 'Franquette', 'Sava', 'Krka' and 'Rubina'. A total of 83 compounds were identified, which included 25 naphthoquinones, 15 hydroxycinnamic acids, 8 hydroxybenzoic acids, 13 flavanols, 2 flavones, 1 flavanone and 19 flavonols. For the first time, 38 phenolics in the husks, 57 phenolics in the buds and 29 phenolics in the bark were presented in J. regia within this study. Naphthoquinones were the major phenolics determined, approximately 75% of all analysed phenolics in the inner husk, 85% in the outer husk, 50% in buds and 80% in bark. The highest content of phenolics was found in the walnut buds, followed by the bark, the inner husk and the outer husk. On the basis of these high phenolic contents, walnut husks, buds and bark represented valuable by-products of the walnut tree. These data also show origin-related phenolic contents across the cultivars, and thus these phenolic profiles might serve to define the origins of different walnut cultivars.
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Affiliation(s)
- Aljaz Medic
- Department of Agronomy, Biotechnical Faculty, University of Ljubljana Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; (J.J.); (A.S.); (M.H.); (R.V.)
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Pertile E, Dvorský T, Václavík V, Heviánková S. Use of Different Types of Biosorbents to Remove Cr (VI) from Aqueous Solution. Life (Basel) 2021; 11:life11030240. [PMID: 33799430 PMCID: PMC8000416 DOI: 10.3390/life11030240] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/11/2021] [Accepted: 03/12/2021] [Indexed: 01/03/2023] Open
Abstract
This article summarizes the results of a research study that was focused on the possibility of removing Cr (VI) from aqueous solution, using low-cost waste biomaterial in a batch mode. A set of seven biosorbents was used: Fomitopsis pinicola, a mixture of cones, peach stones, apricot stones, Juglans regia shells, orange peels, and Merino sheep wool. Three grain fractions (fr. 1/2, fr. 0.5/1.0, and fr. 0/0.5 mm) of biosorbents were studied. The aim was to find the most suitable biosorbent that can be tested with real samples. The influence of other factors on the course of biosorption was studied as well (chemical activation of the biosorbent, pH value, rotation speed during mixing, temperature, and the influence of biosorbent concentration). The use of chemical activation and adjustment of the pH to 1.1 to 2.0 make it possible to increase their sorption capacity and, for some biosorbents, to shorten the exposure times. Two kinetic models were used for the analysis of the experimental data, to explain the mechanism of adsorption and its possible speed control steps: pseudo-first and pseudo-second-order. The pseudo-second-order kinetic model seems to be the most suitable for the description of the experimental data. The thermodynamic parameters suggest that the biosorption was endothermic and spontaneous. In the biosorption equilibrium study, the adsorption data were described by using Langmuir and Freundlich adsorption isotherms. The Langmuir model was applicable to describe the adsorption data of all biosorbents. Both models are suitable for chemically treated sheep fleece and peach stones.
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Affiliation(s)
- Eva Pertile
- Correspondence: (E.P.); (T.D.); Tel.: +420-597-325-188 (E.P.); +420-597-323-593 (T.D.)
| | - Tomáš Dvorský
- Correspondence: (E.P.); (T.D.); Tel.: +420-597-325-188 (E.P.); +420-597-323-593 (T.D.)
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Jakóbik-Kolon A, Bok-Badura J. Sorption and desorption of cadmium and lead on pectin-based biosorbents – batch and column studies. SEP SCI TECHNOL 2020. [DOI: 10.1080/01496395.2019.1583253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Joanna Bok-Badura
- Faculty of Chemistry, Silesian University of Technology, Gliwice, Poland
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Saini J, Garg V, Gupta R. Green synthesized SiO2@OPW nanocomposites for enhanced Lead (II) removal from water. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.06.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Seabra IJ, Braga ME, Oliveira RA, de Sousa HC. Two-step high pressure solvent extraction of walnut (Juglans regia L.) husks: scCO2 + CO2/ethanol/H2O. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2019.07.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Characterization of Residual Biomasses and Its Application for the Removal of Lead Ions from Aqueous Solution. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9214486] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The removal of water pollutants has been widely addressed for the conservation of the environment, and novel materials are being developed as adsorbent to address this issue. In this work, different residual biomasses were employed to prepare biosorbents applied to lead (Pb(II)) ion uptake. The choice of cassava peels (CP), banana peels (BP), yam peels (YP), and oil palm bagasse (OPB) was made due to the availability of such biomasses in the Department of Bolivar (Colombia), derived from agro-industrial activities. The materials were characterized by ultimate and proximate analysis, Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller analysis (BET), Scanning Electron Microscopy (SEM), and Energy Dispersive X-Ray Spectroscopy (EDS) in order to determine the physicochemical properties of bioadsorbents. The adsorption tests were carried out in batch mode, keeping the initial metal concentration at 100 ppm, temperature at 30 °C, particle size at 1 mm, and solution pH at 6. The experimental results were adjusted to kinetic and isotherm models to determine the adsorption mechanism. The remaining concentration of Pb(II) in solution was measured by atomic absorption at 217 nm. The functional groups identified in FTIR spectra are characteristic of lignocellulosic materials. A high surface area was found for all biomaterials with the exception of yam peels. A low pore volume and size, related to the mesoporous structure of these materials, make these bioadsorbents a suitable alternative for liquid phase adsorption, since they facilitate the diffusion of Pb(II) ions onto the adsorbent structure. Both FTIR and EDS techniques confirmed ion precipitation onto adsorbent materials after the adsorption process. The adsorption tests reported efficiency values above 80% for YP, BP, and CP, indicating a good uptake of Pb(II) ions from aqueous solution. The results reported that Freundlich isotherm and pseudo-second order best fit experimental data, suggesting that the adsorption process is governed by chemical reactions and multilayer uptake. The future prospective of this work lies in the identification of alternatives to reuse Pb(II)-contaminated biomasses after heavy metal adsorption, such as material immobilization.
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Lead and uranium sorption characteristics on hydrothermal synthesized delta manganese dioxide. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6004-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Yang C, Niu D, Zhang F, Zhong Y, Cao T, Li L, Liu Y. Absorption mechanisms of lead in aqueous solutions with hydrous manganese dioxide. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 77:2454-2462. [PMID: 29893734 DOI: 10.2166/wst.2018.197] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Hydrous manganese dioxide (HMO) has been synthesized through a facile method. It is found that HMO has an excellent Pb(II) adsorption performance, and an equilibrium adsorption capacity of 127 mg g-1 is expected under room conditions. The sorption capacity is strongly dependent on pH when pH < 7.0, but is not affected by ionic strength, suggesting a mechanism of inner-sphere surface complexation confirmed by X-ray photoelectron analyses (XPS) and Fourier transform infrared spectroscopy (FTIR). The adsorption capacity of Pb(II) in the presence of coexisting negative ions is higher than positive ions. The best fitting of adsorption kinetics and isotherm data are simulated by pseudo-second order equation and Langmuir model, respectively. An endothermic and spontaneous nature in the adsorption process of Pb(II) can be deduced from the obtained thermodynamic data (ΔG < 0, ΔH > 0, ΔS > 0).
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Affiliation(s)
- Chao Yang
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Deqing Niu
- Southwest Automation Research Institute, Mianyang 621010, China
| | - Fujie Zhang
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Yilong Zhong
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Tianqi Cao
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Lei Li
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
| | - Yang Liu
- School of National Defence Science and Technology, Southwest University of Science and Technology, Mianyang 621010, China
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