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Journal articles on the topic 'Water – Purification – Chromium removal'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Noureddine, Nora, Samia Benhammadi, Fouad Kara, Hakim Aguedal, Abdelkader Iddou, and Tālis Juhna. "Purification of Contaminated Water with Chromium (VI) Using Pseudomonas aeruginosa." Key Engineering Materials 721 (December 2016): 143–48. http://dx.doi.org/10.4028/www.scientific.net/kem.721.143.

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A bacterial strain Pseudomonas aeruginosa isolated from an uncontaminated soil has been used for the removal of hexavalent chromium (Cr (VI)). The experiments were carried out in batch system in a culture broth. The results obtained have shown that 100% of Cr (VI) are removed. Contact time, initial concentration of the hexavalent chromium, temperature, as well as the nature of the culture broth have influenced this elimination. To the initial concentration of 20g/L of Cr (VI) the elimination rates are lower, while the reverse occurs for an initial concentration of 8g/L. This study allows consi

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2

Frolova, Liliia, Mykola Kharytonov, Iryna Klimkina, Oleksandr Kovrov, and Andrii Koveria. "Adsorption purification of waste water from chromium by ferrite manganese." E3S Web of Conferences 168 (2020): 00026. http://dx.doi.org/10.1051/e3sconf/202016800026.

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Plasma method is used to synthesize manganese ferrite. The basic properties of ferrite are determined by IR spectroscopy, UV spectroscopy, X-ray phase analysis, vibration magnetometry. The paper shows that the use of magnetically controlled sorbent allows to purify waste waters from chromium (III). The process of adsorption of chromium cations (III) is investigated. The kinetics of the process is studied. To describe the equilibrium isotherms, the experimental data are analysed by the models of Langmuir, Freundlich isotherms. Pseudo-first order, pseudo-second-order, and Weber-Morris are used t

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3

Gupta, Vinod Kumar, Ramesh Chandra, Inderjeet Tyagi, and Monu Verma. "Removal of hexavalent chromium ions using CuO nanoparticles for water purification applications." Journal of Colloid and Interface Science 478 (September 2016): 54–62. http://dx.doi.org/10.1016/j.jcis.2016.05.064.

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4

Elsehly, Emad M., N. G. Chechenin, A. V. Makunin, H. A. Motaweh, and E. G. Leksina. "Functionalized carbon nanotubes based filters for chromium removal from aqueous solutions." Water Science and Technology 75, no. 7 (2017): 1564–71. http://dx.doi.org/10.2166/wst.2017.028.

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This investigation examines the filtration efficiency of chromium from aqueous solution using two types of commercial multiwalled carbon nanotubes (MWCNTs) (Taunit-M (TM) and Taunit-MD (TMD)). These MWCNTs were modified using two complementary treatments, purification (using a mixture of hydrochloric acid and hydrogen peroxide) and functionalization (using nitric acid). The effect of these treatments on the morphology of MWCNT Taunit filters was characterized by scanning electron microscopy and energy dispersive X-ray spectroscopy to estimate the outer diameter distribution and element content

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5

Sharma, Abhinav, Aditya Tulsyan, and Srinivas Motamarri. "A comparative study of chromium(VI) removal using sawdust and eucalyptus bark." Water Supply 9, no. 4 (2009): 343–47. http://dx.doi.org/10.2166/ws.2009.226.

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A comparative study on low cost biological adsorbents such as eucalyptus bark and sawdust has analyzed them for their effectiveness in the removal of hexavalent chromium. Batch experiments were carried out on synthetic solutions mimicking bore water collected from an industrial area contaminated with tannery effluent. The analysis on hexavalent chromium removal was carried out by varying experimental parameters such as pH, dosage and contact time. The study reveals that sawdust works best at pH 3 while eucalyptus shows better results at pH 2. Moreover, the optimum dosages determined for the ab

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6

Pikaev, A. K. "Mechanism of radiation purification of polluted water and wastewater." Water Science and Technology 44, no. 5 (2001): 131–39. http://dx.doi.org/10.2166/wst.2001.0269.

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The paper summarizes the results of the studies on radiation purification of polluted water and wastewater conducted in the author's laboratory in cooperation with other institutions. The removal of heavy metals (cadmium, lead, chromium and mercury) from water and wastewater, the purification of wastewater from surfactant and petroleum products, molasses distillery slops, municipal wastewater in the aerosol flow, river water from colored natural organic pollutants, wastewater of dyeing complex and paper mill, the decomposition of some dyes, hydrogen peroxide, chlorine-containing organic compou

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7

Puszkarewicz, Alicja, and Jadwiga Kaleta. "Chromium (VI) Adsorption on Modified Activated Carbons." Applied Sciences 9, no. 17 (2019): 3549. http://dx.doi.org/10.3390/app9173549.

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The paper presents the research of adsorptive properties of activated carbons to chromium (VI) removal from the water solution. Different types of carbon were investigated: WD-ekstra (WDA), WD-ekstra modified by salt acid WD(HCl) and nitrogen acid WD(HNO3). The adsorption kinetics, influence reaction, temperature and kind of carbon were determined using static methods. The adsorption of chromium (VI) onto all activated carbons was most efficient at pH 2. The time of adsorption balance for carbon WD(HCl) was 2.5 h and for carbon WDA 4.5 h. The influence of carbon modification and temperature on

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8

Antoniadou, Maria, Michalis K. Arfanis, Islam Ibrahim, and Polycarpos Falaras. "Bifunctional g-C3N4/WO3 Thin Films for Photocatalytic Water Purification." Water 11, no. 12 (2019): 2439. http://dx.doi.org/10.3390/w11122439.

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A bifunctional thin film photocatalyst consisting of graphitic carbon nitride on tungsten trioxide (g-C3N4/WO3) is introduced for the improvement of photocatalytic activity concerning hexavalent chromium reduction and methylene blue dye removal in water, compared to the bare, widely used WO3 semiconductor. A bilayered structure was formed, which is important for the enhancement of the charge carriers’ separation. The characterization of morphological, structural, optoelectronic, and vibrational properties of the photocatalysts permitted a better understanding of their photocatalytic activity f

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9

Palacios Hinestroza, Hasbleidy, Hilary Urena-Saborio, Florentina Zurita, Aida Alejandra Guerrero de León, Gunasekaran Sundaram, and Belkis Sulbarán-Rangel. "Nanocellulose and Polycaprolactone Nanospun Composite Membranes and Their Potential for the Removal of Pollutants from Water." Molecules 25, no. 3 (2020): 683. http://dx.doi.org/10.3390/molecules25030683.

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A composite membrane based on polycaprolactone (PCL) and cellulose nanofibers (CNF) with different compositions was prepared using the electro-spinning method, with the objective of developing organic membranes with good mechanical properties to remove contaminants from water. Water is a resource of primary importance for life and human activities. In this sense, cellulose obtained from agave bagasse and polycaprolactone nanofibers was used to prepare membranes that were tested by filtering tap water. The membranes obtained presented a porosity and structure on a nanometric scale. The water qu

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10

Chen, Runhua, Ping Wang, Meng Li, et al. "Removal of Cr(VI) by magnetic Fe/C crosslinked nanoparticle for water purification: rapid contaminant removal property and mechanism of action." Water Science and Technology 78, no. 10 (2018): 2171–82. http://dx.doi.org/10.2166/wst.2018.497.

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Abstract In this study, a novel method based on the magnetic Fe/C crosslinked nanoparticles (MNZVI/CNTs-OH) is reported for the effective removal of Cr(VI) in aqueous solutions. Parameters that influence the effectiveness of the nanoparticles, such as pH, temperature, reaction time, and particle dosage, was analyzed. It was found that MNZVI/CNTs-OH particles exhibit significantly higher activity toward Cr(VI) removal than bare NZVI, carbon nanotubes (CNTs), and other synthetic nanomaterials. Under optimized conditions, the removal efficiency of Cr(VI) by MNZVI/CNTs-OH is up to 98% with an init

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11

Zakmout, Asmaa, Fatma Sadi, Carla A. M. Portugal, João G. Crespo, and Svetlozar Velizarov. "Tannery Effluent Treatment by Nanofiltration, Reverse Osmosis and Chitosan Modified Membranes." Membranes 10, no. 12 (2020): 378. http://dx.doi.org/10.3390/membranes10120378.

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The objective of this work is to develop an appropriate technology for environmentally sound membrane-based purification of a tannery effluent assuring, simultaneously, the recovery of chromium, considered as the most hazardous inorganic water pollutant extensively used in leather tanning. A comparison between the permeate fluxes obtained during treatment of a synthetic tannery effluent through nanofiltration (NF270 and NF90 membranes) and reverse osmosis (BW30 and SW30) membranes was first performed. Then, a dedicated polymeric membrane was prepared by coating chitosan (cs) on a polyethersulf

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12

Li, Suli, Hailian Huang, Zhigang Li, Zhengwen Li, Zhenli He, and He Liang. "Chromium removal capability and photosynthetic characteristics of Cyperus alternifolius and Coix lacryma-jobi L. in vertical flow constructed wetland treated with hexavalent chromium bearing domestic sewage." Water Science and Technology 76, no. 8 (2017): 2203–12. http://dx.doi.org/10.2166/wst.2017.396.

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In this study, the chromium removal capability and photosynthetic capacity response of plants were investigated in vertical flow wetland microcosms (VFWM) treated with Cr(VI) bearing domestic sewage. Two plants, Cyperus alternifolius (C. alternifolius) and Coix lacryma-jobi L. (C. lacryma-jobi L.) grown in the VFWM enhanced the purification of Cr(VI) enriched domestic sewage. Cr concentration in the effluent fell below detection limit (&lt;0.03 mg L−1), except for the C. alternifolius wetland treated with 40 mg L−1 Cr(VI). The biomasses of both plants species were increased at 10 and 20 mg

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13

Zhang, Yun, and Shi Quan Liu. "A Comparative Study on Silica Sands as Absorbents for the Removal of Hexavalent Chromium Ions from Aqueous Solutions." Applied Mechanics and Materials 670-671 (October 2014): 189–92. http://dx.doi.org/10.4028/www.scientific.net/amm.670-671.189.

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Silica sand is the main material in glass production. It can also be used for water purification. In this work, two types of silica sand used for the glass production were directly applied in the removal of Cr6+ from aqueous solutions. The chemical composition, loss-on-ignition, acid solubility and surface area of the two sands are compared. The results indicate that both sands are quite similar in chemical and mineral compositions. However, sand B has a higher organic content, a smaller crystalline grain size, a larger surface area and acid solubility. As a result, sand B shows a larger absor

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14

Xu, Shengnan, Gang Xiao, Zishuai Wang, Yaoqiang Wang, Ziwei Liu, and Haijia Su. "A reusable chitosan/TiO2@g-C3N4 nanocomposite membrane for photocatalytic removal of multiple toxic water pollutants under visible light." Water Science and Technology 83, no. 12 (2021): 3063–74. http://dx.doi.org/10.2166/wst.2021.188.

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Abstract Photocatalysis has been proved to be a promising approach in wastewater purification. However, it is hard to recycle powdery photocatalysts from wastewater in industry, but immobilizing them using larger materials can overcome this drawback. For that reason, TiO2@g-C3N4 was embedded into chitosan to synthesize a highly reusable and visible-light-driven chitosan/TiO2@g-C3N4 nanocomposite membrane (CTGM). CTGM showed enhanced photoactivity and the photocatalytic efficiencies of the toxic water pollutants methyl orange (M.O.), rhodamine B (Rh.B), chromium (VI) (Cr (VI)), 2,4-dichlorophen

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15

Wolf, I. V., Yu M. Chernoberezhsky, E. I. Jepifantseva, and A. D. Simonov. "Thermocatalytic and Chemical Treatment of Lignin-Aluminium Sludge and Utilization of the Resulting Adsorbent-Coagulant." Water Science and Technology 24, no. 3-4 (1991): 357–60. http://dx.doi.org/10.2166/wst.1991.0491.

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Lignin compounds pass through conventional biological treatment. Purification effiency can be improved by chemical coagulation with e.g. aluminium sulphate. The generated aluminium sludge can be converted into adsorbent-coagulant by thermocatalytic and sequential chemical disposal. A thermocatalytic reactor with the temperature range from 400° to 700 °C and with copper-chromium catalyst was applied to treat aluminium sludge. The resulting adsorbent-coagulant removed colour up to 95 % and COD up to 75 % from diluted kraft black liquor.

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16

Rahman, Md Lutfor, Zhi Jian Wong, Mohd Sani Sarjadi, et al. "Heavy Metals Removal from Electroplating Wastewater by Waste Fiber-Based Poly(amidoxime) Ligand." Water 13, no. 9 (2021): 1260. http://dx.doi.org/10.3390/w13091260.

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An efficient and economical treatment technology for heavy metal removal from the electroplating wastewaters is needed for the water purification. Therefore, pure cellulosic materials were derived from two waste fiber (pandanus fruit and durian rind) and conversion of the cellulose into the poly(acrylonitrile)-grafted material was accomplished by free radical grafting system. Thereafter, poly(amidoxime) ligand was produced from the grafted materials. Sorption capacity (qe) of several toxic metals ions was found to be high, e.g., copper capacity (qe) was 298.4 mg g−1 at pH 6. In fact, other met

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17

García-Valero, Amalia, Silvia Martínez-Martínez, Ángel Faz, et al. "Treatment of WASTEWATER from the Tannery Industry in a Constructed Wetland Planted with Phragmites australis." Agronomy 10, no. 2 (2020): 176. http://dx.doi.org/10.3390/agronomy10020176.

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Constructed wetlands (CWs) can remove a high amount of pollutants from wastewater, and therefore play an important role in water purification. In this study, a pilot system to improve the traditional treatment of industrial wastewater from the tannery industry was tested. The main objective of this research was to remove nitrogen, phosphorus, boron, and chromium from a tannery’s industrial wastewater using a horizontal subsurface flow constructed wetland (HSSFCW) formed from three cells, planted with Phragmites australis and operated in batch mode as an ecofriendly system. P. australis was sel

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18

Rahman, Md Lutfor, Zhi-Jian Wong, Mohd Sani Sarjadi, et al. "Waste Fiber-Based Poly(hydroxamic acid) Ligand for Toxic Metals Removal from Industrial Wastewater." Polymers 13, no. 9 (2021): 1486. http://dx.doi.org/10.3390/polym13091486.

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Toxic metals in the industrial wastewaters have been liable for drastic pollution hence a powerful and economical treatment technology is needed for water purification. For this reason, some pure cellulosic materials were derived from waste fiber to obtain an economical adsorbent for wastewater treatment. Conversion of cellulose into grafting materials such as poly(methyl acrylate)-grafted cellulose was performed by free radical grafting process. Consequently, poly(hydroxamic acid) ligand was produced from the grafted cellulose. The intermediate products and poly(hydroxamic acid) ligand were a

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19

Chen, Zhangxu, Baorong Wu, Xiaodan Huang, Xianxue Li, and Yonglong Lin. "Biomimetic Synthesis of Hydroxyapatite in Presence of Imidazole-4,5-dicarboxylic Acid Grafted Chitosan for Removing Chromium(VI)." Journal of Nanotechnology 2018 (June 3, 2018): 1–7. http://dx.doi.org/10.1155/2018/5431290.

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In order to biomimetic synthesize hydroxyapatite similar to natural bone. Hydroxyapatite (HAP) is biomimetic synthesized in simulated body fluid (SBF) by addition of imidazole-4,5-dicarboxylic acid grafted chitosan (IDACS). The effect of molar ratio of chitosan (CS) to imidazole-4,5-dicarboxylic acid (IDA) on preparation of HAP was investigated. The structure, size, and crystal phase of the obtained hydroxyapatite were observed by Fourier transform infrared spectroscopy, X-ray powder diffraction, and scanning electron microscopy. The results show that the molar ratio of CS to IDA is 1 : 3, the

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20

Ivanova, Tatyana V., Alexander A. Il'in, Ruslan N. Rumyantsev, Anastasia A. Kournikova, and Alexander P. Ilyin. "FORMATION OF IMPURITIES IN SYNTHESIS GAS AT STAGE OF CONVERSION OF CARBON MONOXIDE TO HYDROGEN IN AMMONIA PRODUCTION." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 64, no. 5 (2021): 50–56. http://dx.doi.org/10.6060/ivkkt.20216405.6391.

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The article analyzes the work of the department for the conversion of carbon monoxide with water vapor to hydrogen as part of the ammonia synthesis unit. The effect of temperature and duration of operation of the medium-temperature conversion catalyst on the technical and technological parameters of the process is shown. The catalytic conversion of carbon monoxide is an important component of the hydrogen production process in the industrial technology of deep processing of natural gas. In modern ammonia synthesis units, the conversion process takes place in two stages: first, at a temperature

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21

Philipot, J. M., F. Chaffange, and J. Sibony. "Hexavalent Chromium Removal from Drinking Water." Water Science and Technology 17, no. 6-7 (1985): 1121–32. http://dx.doi.org/10.2166/wst.1985.0207.

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A series of tests were performed with a view to solving the problem of chromium pollution in the Meulan district near Paris, due to the proximity of long-established metal-working plants. It was found that the accumulated pollution not only originated from the groundwater source but also from atmospheric contamination through fall-out from smoke and fumes issuing from local metal-works' stacks. Among the interesting features of this paper is the fact that, since the profound penetration by the pollutant affects potable feedstock, chromium removal studies have been made on potable water for the

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22

Sharma, Saroj K., Branislav Petrusevski, and Gary Amy. "Chromium removal from water: a review." Journal of Water Supply: Research and Technology-Aqua 57, no. 8 (2008): 541–53. http://dx.doi.org/10.2166/aqua.2008.080.

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23

Islam, Shriful, Fuad Bin Nasir, Muhammad Azizul Hoq, and Gulam Md. Munna. "Chromium Removal from Water Using Spirodela polyrhiza." Asian Journal of Applied Sciences 10, no. 3 (2017): 145–50. http://dx.doi.org/10.3923/ajaps.2017.145.150.

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24

Piedra, Elena, José R. Álvarez, and Susana Luque. "Hexavalent chromium removal from chromium plating rinsing water with membrane technology." Desalination and Water Treatment 53, no. 6 (2014): 1431–39. http://dx.doi.org/10.1080/19443994.2014.943058.

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25

Tielong, Li, Geng Bing, Zhang Na, Jin Zhaohui, and Qi Xinhua. "Hexavalent chromium removal from water using chitosan-Fe0nanoparticles." Journal of Physics: Conference Series 188 (September 1, 2009): 012057. http://dx.doi.org/10.1088/1742-6596/188/1/012057.

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26

Eisazadeh, Hossein. "Removal of chromium from waste water using polyaniline." Journal of Applied Polymer Science 104, no. 3 (2007): 1964–67. http://dx.doi.org/10.1002/app.25904.

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27

López, Xicoténcatl, and Victor M. Castaño. "Chromium Removal from Industrial Water Through Functionallized Nanoparticles." Journal of Nanoscience and Nanotechnology 8, no. 11 (2008): 5733–38. http://dx.doi.org/10.1166/jnn.2008.247.

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Cr ion-polluted industrial water was treated with commercial activated carbon and with either mercaptane- and amine-functionallized silica nanoparticles, revealing that the use of relatively low surface area materials can advantageously compete with high surface area materials, traditionally utilized for removing hazardous metal ions, provided a proper surface functionalization of the nanoparticles is in place. FTIR and SEM characterization of the different materials and stages of the experiments are provided, as well.

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28

Chaleshtari, Zahra Abbasian, and Reza Foudazi. "Polypyrrole@polyHIPE Composites for Hexavalent Chromium Removal from Water." ACS Applied Polymer Materials 2, no. 8 (2020): 3196–204. http://dx.doi.org/10.1021/acsapm.0c00362.

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29

Ghasemi, Ramin, Tofigh Sayahi, Somayeh Tourani, and Marzieh Kavianimehr. "Modified Magnetite Nanoparticles for Hexavalent Chromium Removal from Water." Journal of Dispersion Science and Technology 37, no. 9 (2015): 1303–14. http://dx.doi.org/10.1080/01932691.2015.1090906.

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30

Pansini, M., C. Colella, and M. De Gennaro. "Chromium removal from water by ion exchange using zeolite." Desalination 83, no. 1-3 (1991): 145–57. http://dx.doi.org/10.1016/0011-9164(91)85091-8.

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31

Staves, Roger P., and Ronald M. Knaus. "Chromium removal from water by three species of dyckweeds." Aquatic Botany 23, no. 3 (1985): 261–73. http://dx.doi.org/10.1016/0304-3770(85)90070-1.

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32

TERAI, AKIHITO, MASAKO TOYOHARA, ATSUMASA SATO, and HARUHIKO TOYOHARA. "Purification of water contaminated with hexavalent chromium by carbonized seaweeds." NIPPON SUISAN GAKKAISHI 77, no. 6 (2011): 1076–82. http://dx.doi.org/10.2331/suisan.77.1076.

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33

TOYOHARA, HARUHIKO. "Purification of water contaminated with hexavalent chromium by carbonized seaweeds." NIPPON SUISAN GAKKAISHI 78, no. 4 (2012): 659. http://dx.doi.org/10.2331/suisan.78.659.

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Ma, Jian Wei, and Ya Rui Song. "Purification Raw Water by Magnetic Resin (MIEX)." Advanced Materials Research 726-731 (August 2013): 3185–88. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.3185.

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The objective of this research was to compare enhanced coagulation with anion exchange for removal of natural organic matter (NOM) and bromide. Treatment with a magnetic ion exchange resin (MIEX) was the primary focus of this study. The performance of the magnetic ion exchange resin,MIEX, in the treatment of raw water was investigated. MIEX can effectively remove UV-absorbing substances DOC. The removal of organic substances is accompanied by the elimination of other undesirable components, such as nitrogen and phosphorus. The optimal process parameters are at resin doses of 5-10 mL L1and cont

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Mullakaev, M. S., and G. B. Veksler. "Galvanocoagulative Cleaning of Chromium-Containing Waste Water." Ecology and Industry of Russia 22, no. 8 (2018): 8–13. http://dx.doi.org/10.18412/1816-0395-2018-8-8-13.

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The paper presents the results of laboratory and bench experiments to determine the rational modes of galvanochemical cleaning of chromiumcontaining waste water from JSC "Russian Chrome 1915". Recommendations are given on the modernization of the existing purification system of the enterprise on the basis of the developed technological scheme, which can be realized through the creation of two autonomous units: neutralization and separation. The developed technology foundations can be the basis of a new approach in dealing with a wide range of chromium-containing wastewater treatment problems.

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Nagaraj, Ammavasi, Murugan A. Munusamy, Abdullah A. Al-Arfaj, and Mariappan Rajan. "Functional Ionic Liquid-Capped Graphene Quantum Dots for Chromium Removal from Chromium Contaminated Water." Journal of Chemical & Engineering Data 64, no. 2 (2018): 651–67. http://dx.doi.org/10.1021/acs.jced.8b00887.

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Utsev, Terlumun Joseph, Uungwa Shachia Jude, and Peter Okah. "Suitability of Lemna Trisulca (Duckweed) in Water Purification." European Journal of Engineering Research and Science 2, no. 3 (2017): 11. http://dx.doi.org/10.24018/ejers.2017.2.3.270.

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The research was aimed at studying the effectiveness of duckweed as a coagulant/disinfectant in the treatment of water and wastewater. Water sample was obtained from River Benue and duckweed was harvested near a residential area in Makurdi Town, Nigeria. Laboratory experiments were carried out using dosage, pH, temperature, initial concentration and Flocculating Speed as variables for both disinfection and coagulation. Results obtained revealed that, the optimum conditions with respect to disinfection (bacteria load removal) were; Dosage=0.4ml, pH=9, Temperature=30°C, Initial concentration=300

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Olshanskaya, L. N., I. A. Tiltigin, and T. V. Osipova. "EFFICIENCY OF CLEANING OF CHROME-CONTAINING WASTE WATER IN GALVANIC PRODUCTION." Innovatics and Expert Examination, no. 1(29) (July 1, 2020): 144–51. http://dx.doi.org/10.35264/1996-2274-2020-1-144-151.

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A promising method for purification of chromium-containing wastewater from galvanic plants is considered. A review and comparative analysis of existing methods and technologies for purifying industrial effluents from organochromic compounds: reagent, biological, ion-exchange, etc. are presented. The advantages of using the combined method of purification of chromium-containing wastewater based on electroflotation with preliminary electrocoagulation are shown. The effectiveness of the proposed combined method was evaluated and the scheme of the electroflotocoagulator was developed.

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39

Kitada, S., T. Oikawa, S. Watanabe, et al. "Removal of radioactive iodine and cesium in water purification." Desalination and Water Treatment 54, no. 13 (2014): 3494–501. http://dx.doi.org/10.1080/19443994.2014.923205.

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40

Martin, Benjamin David, Mohammed Qasim Asghar, and Eve Germain. "Hexavalent chromium removal from municipal wastewater using ferrous salts." Water Practice and Technology 13, no. 1 (2018): 115–24. http://dx.doi.org/10.2166/wpt.2018.021.

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Abstract Hexavalent chromium is difficult to remove during conventional biological wastewater treatment. This is because the hexavalent form is dissolved and is only sparingly removed by adsorption onto biomass in conventional processes. Hexavalent chromium is of particular concern because of its aquatic toxicity, and an increasing number of wastewater works have effluent discharge limits to protect receiving water courses, some as low as 8 μg Cr L−1. A relatively simple improvement to the removal of chromium could be made by switching the aluminium or ferric solution dosed at most treatment w

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Utsev, Terlumun Joseph, and M. O. Onah. "Removal of Chromium from Waste Water Using Yam Peel Activated Carbon." European Journal of Engineering Research and Science 2, no. 1 (2017): 9. http://dx.doi.org/10.24018/ejers.2017.2.1.240.

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The paper examined the use of yam peel to develop an adsorbent material with good surface characteristics for the removal of chromium (vi) from waste water. Activated carbons were produced from yam peel under varying conditions; temperature, time and preparation sequence in order to determine the optimum conditions. It's efficiency on the adsorption of chromium from waste water was investigated through batch adsorption studies using direct reading spectrophotometer. Samples of yam peels, 100g each were carbonized under varying temperatures of 100, 200, 300, 400, and 500ºC ,with varying carboni

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Jiménez-Castañeda, Martha E., and Pablo Emilio Escamilla-García. "Chromium removal from water using modified organic materials: A review." Water Quality Research Journal 55, no. 3 (2020): 221–33. http://dx.doi.org/10.2166/wqrj.2020.020.

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Abstract Chromium is a non-biodegradable element predominantly found in two chemical forms, Cr(VI) and Cr(III). Several remediation strategies have been implemented to achieve its removal from aquatic environments with limited results. This review article focuses on the analysis of removal strategies including the use of: (1) raw materials (agro-wastes, activated carbons, extracts and solutions) and (2) treated materials (alkaline and acid treatments). The article also reviews and analyses results obtained with surfactant modified organic biomasses. Although this review aims to summarise chrom

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Stergioudi, F., E. Kaprara, K. Simeonidis, et al. "Copper foams in water treatment technology: Removal of hexavalent chromium." Materials & Design 87 (December 2015): 287–94. http://dx.doi.org/10.1016/j.matdes.2015.08.022.

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McGuire, Michael J., Nicole K. Blute, Chad Seidel, Gang Qin, and Leighton Fong. "Pilot-scale studies of Hexavalent Chromium Removal from drinking water." Journal - American Water Works Association 98, no. 2 (2006): 134–43. http://dx.doi.org/10.1002/j.1551-8833.2006.tb07595.x.

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Singh, Vinay K., and Prem N. Tiwari. "Removal and Recovery of Chromium(VI) from Industrial Waste Water." Journal of Chemical Technology & Biotechnology 69, no. 3 (1997): 376–82. http://dx.doi.org/10.1002/(sici)1097-4660(199707)69:3<376::aid-jctb714>3.0.co;2-f.

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Akkan, Şenay, İlknur Altın, Melek Koç, and Münevver Sökmen. "TiO2immobilized PCL for photocatalytic removal of hexavalent chromium from water." Desalination and Water Treatment 56, no. 9 (2014): 2522–31. http://dx.doi.org/10.1080/19443994.2014.963688.

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Pham, Minh Tuan, Syouhei Nishihama, and Kazuharu Yoshizuka. "Removal of Chromium from Water Environment by Forward Osmosis System." MATEC Web of Conferences 333 (2021): 04007. http://dx.doi.org/10.1051/matecconf/202133304007.

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Forward osmosis (FO) technology has been applied for removal of chromium (Cr) from water environment. Comparison of the removal efficiency of Cr(VI) and Cr(III) was investigated by changing several operational conditions. The pH of feed solution plays an important role in rejection of Cr. The Cr(VI) rejection was increased with increasing pH, while Cr(III) rejection was stable. It also demonstrated that the rejection of Cr was higher when the membrane active layer faces the feed solution compared to the rejection when the membrane active layer faces the draw solution.

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Basaldella, Elena I., Patricia G. Vázquez, Fabio Iucolano, and Domenico Caputo. "Chromium removal from water using LTA zeolites: Effect of pH." Journal of Colloid and Interface Science 313, no. 2 (2007): 574–78. http://dx.doi.org/10.1016/j.jcis.2007.04.066.

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Owlad, Mojdeh, Mohamed Kheireddine Aroua, Wan Ashri Wan Daud, and Saeid Baroutian. "Removal of Hexavalent Chromium-Contaminated Water and Wastewater: A Review." Water, Air, and Soil Pollution 200, no. 1-4 (2008): 59–77. http://dx.doi.org/10.1007/s11270-008-9893-7.

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Gallios, George P., and Miroslava Vaclavikova. "Removal of chromium (VI) from water streams: a thermodynamic study." Environmental Chemistry Letters 6, no. 4 (2007): 235–40. http://dx.doi.org/10.1007/s10311-007-0128-8.

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