Relevant bibliographies by topics / Heavy metal Adsorption

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Heavy metal Adsorption'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Heavy metal Adsorption"

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Huang, Sui Liang. "Adsorption of Cadmium Ions onto the Yellow River Sediment." Water Quality Research Journal 38, no. 2 (May 1, 2003): 413–32. http://dx.doi.org/10.2166/wqrj.2003.026.

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Abstract Adsorption of cadmium ions onto Yellow River sediment was studied in a batch reactor. Equilibrium adsorption of cadmium ions onto Yellow River sediment can be well described by the Langmuir adsorption isotherm. In view of common experimental conditions in the batch reactor, a set of equations for describing variations of both the dissolved heavy metal pollutant concentration and the particulate heavy metal pollutant concentrations (the adsorption content of heavy metal pollutant on unit weight of sediment) with time was formulated with the use of an adsorptive reaction kinetic equation of heavy metal pollutant, mass balance equation and corresponding initial conditions. Furthermore, formulae for calculating the equilibrium dissolved heavy metal concentration and the equilibrium particulate heavy metal concentration (the equilibrium adsorption content of heavy metal pollutant on unit weight of sediment) in the batch reactor were obtained. These can be used as tools for further study. It was found that the saturation adsorption content, b, constant of adsorption-desorption rate, k, and coefficient of adsorption rate, k1 (and coefficient of desorption rate k2), in the adsorptive reaction kinetic equation of the Langmuir type are independent of the suspended sediment concentration. Adsorption contents of heavy metal pollutants on unit weight of sediment (the suspended particulate heavy metal concentration) decreases with increasing suspended sediment concentration and can be well explained by the law of mass conservation. Adsorption capacity, which is defined as adsorption content of heavy metal pollutant by unit volume of (muddy) water, increases with an increase in either the suspended sediment concentration or initial dissolved heavy metal concentration.
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Naseem, Khalida, Zahoor H. Farooqi, Muhammad Z. Ur Rehman, Muhammad A. Ur Rehman, Robina Begum, Rahila Huma, Aiman Shahbaz, Jawayria Najeeb, and Ahmad Irfan. "A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent." Water Science and Technology 77, no. 10 (April 26, 2018): 2355–68. http://dx.doi.org/10.2166/wst.2018.190.

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Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.
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Song, Guanling, Lijing Cao, Xiao Chen, Wenhua Hou, and Qunhui Wang. "Heavy metal adsorption changes of EAF steel slag after phosphorus adsorption." Water Science and Technology 65, no. 9 (May 1, 2012): 1570–76. http://dx.doi.org/10.2166/wst.2012.048.

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A kind of electric arc furnace (EAF) steel slag was phosphated, and its isothermal and dynamic adsorptions of copper, cadmium, and lead ions were measured to determine if heavy metal adsorption changes after phosphorus adsorption. The surface area increased greatly after the slag was phosphated. Isothermal adsorption experiments showed that the theoretical Qmax of the EAF steel slag on Cu2+, Cd2+, and Pb2+ improved 59, 50, and 89% respectively after it was phosphated. Dynamic adsorption results showed that the greatest adsorption capacities of unit volume of Cu2+, Cd2+, and Pb2+ were 2.2, 1.8, and 1.8 times that of the column packed with original EAF steel slag when the column was packed with phosphate EAF steel slag at the same heavy metal ion concentration. The breakthrough time, the exhaustion time and elution efficiency of the column also increased when the column was packed with phosphated EAF steel slag compared with that packed with original EAF steel slag. Phosphorus adsorption could further improve the heavy metal ion adsorption of the EAF steel slag.
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L, Sirajo, Musa L., and Ndanusa I. A. "DETERMINATION OF ADSORPTION KINETICS OF COCONUT HUSK ADSORBENT FOR HEAVY METALS REMOVAL USING LANGMUIR AND FREUNDLICH ISOTHERM EXPRESSIONS." International Journal of Research -GRANTHAALAYAH 6, no. 10 (October 31, 2018): 87–94. http://dx.doi.org/10.29121/granthaalayah.v6.i10.2018.1165.

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Adsorption of heavy metal cationic ions (Cr, Pb, and Cu) onto coconut husk carbon (CHC) adsorbent has been studied using batch-adsorption method. The study was carried out to investigate the adsorption kinetic and adsorption isotherm of the coconut husk adsorbent for the removal of heavy metals in waste liquid effluent. The influence of pH, contact time, adsorbent dose, and adsorbent concentration, and temperature on the adsorption process was also studied. Results indicated an initial increase in adsorption rate, and optimal removal of heavy metal was reached within 70 minutes, further increase in contact time and temperature show significant change in equilibrium concentration. Also, further increase in adsorbent dosage revealed significant change in the sorption capacity of the CHC. The adsorption isotherms could be fitted well by both Langmuir and Freundlich models. The RI (equilibrium parameter) value in the present investigation was less than 1 (one) which indicates that the adsorption of the heavy metals ions on the CHC is favorable. The value of n for this study which indicates the degree of non-linearity between solution concentration and adsorption were 0.31–0.39, this result indicated that the adsorption of heavy metals onto the CHC is a chemical sorption. After treatment of synthetic heavy metal solution with the CHC, the adsorption isotherm model analysis revealed that the adsorption capacity (b) of CHC for the heavy metal were 89 mg/L (Cr), 125.5 mg/L (Pb), and 129.7 mg/L (Cu). Conclusively, the results indicate that the freely abundant agricultural waste-coconut husk can be treated for heavy metal adsorption but it’s not economically viable because it’s not renewable due to the chemisorption nature of the adsorption process.
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Chen, Peng, and Peng Hua Cao. "The Residue of Heavy Metals in Lobster Sauce and the Shallow Analysis of Occurred Mechanism." Advanced Materials Research 518-523 (May 2012): 2267–73. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2267.

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Using thiol-activated-carbon adsorption heavy metal (Cd) in lobster sauce were studied.The content of Cd in lobster sauce from the different manufacturers are detected in the appropriate adsorption conditions and analytical conditions, while on the mechanism of heavy metals in lobster sauce were analyzed. The results show that: the thiol-activated-carbon adsorption of heavy metals in the lobster sauce has a good effect on adsorption and desorption .At the same time ,it is to be found that the content of heavy metal (Cd) after using this method to dispose the samples is higher than the national standards relating to the content of heavy metal (Cd) in beans.Its occurred mechanism mainly is soybean itself pollution, soybean itself with the manufacturing technique and added salt ，etc.
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Kromah, Varney, and Guanghui Zhang. "Aqueous Adsorption of Heavy Metals on Metal Sulfide Nanomaterials: Synthesis and Application." Water 13, no. 13 (July 1, 2021): 1843. http://dx.doi.org/10.3390/w13131843.

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Heavy metals pollution of aqueous solutions generates considerable concerns as they adversely impact the environment and health of humans. Among the remediation technologies, adsorption with metal sulfide nanomaterials has proven to be a promising strategy due to their cost-effective, environmentally friendly, surface modulational, and amenable properties. Their excellent adsorption characteristics are attributed to the inherently exposed sulfur atoms that interact with heavy metals through various processes. This work presents a comprehensive overview of the sequestration of heavy metals from water using metal sulfide nanomaterials. The common methods of synthesis, the structures, and the supports for metal sulfide nano-adsorbents are accentuated. The adsorption mechanisms and governing conditions and parameters are stressed. Practical heavy metal remediation application in aqueous media using metal sulfide nanomaterials is highlighted, and the existing research gaps are underscored.
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Maranescu, Bianca, Lavinia Lupa, and Aurelia Visa. "Heavy metal removal from waste waters by phosphonate metal organic frameworks." Pure and Applied Chemistry 90, no. 1 (January 26, 2018): 35–47. http://dx.doi.org/10.1515/pac-2017-0307.

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AbstractThe increase attention in the area of phosphonate metal organic framework is exemplified with a variety of applications and a rich chemistry of these compounds. Water pollution caused by heavy metal ions is a major concern due to their toxicity to many life forms. In order to decrease the heavy metals impact upon the environment various technologies of water treatment such as: chemical sedimentation, ion exchange, redox process are studied. The tendency is to find a versatile and economical method of heavy metals removal from waste waters. Phosphonate metal organic frameworks were obtained by the reaction of Ni(CH3COO)2·4H2O, phosphonic acid (phosphonoacetic (CP), vinyl phosphonic acid (VP) and N,N-bis(phosphonomethyl)glycine (Gly)) in hydrothermal conditions. Coordination polymers synthesized were characterized by FTIR, XRD, scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). The adsorption processes represent a very good alternative for heavy metals removal due to low costs and ease of operation. In the present paper the adsorption performance of the mentioned materials in the removal process of heavy metals from aqueous solutions, was studied using the batch method. The adsorption conditions were investigated by varying the initial pH, contact time and adsorbate initial concentration for chromium metal ions removal from aqueous solutions. It was found that the adsorption efficiency of the studied materials in the removal process of Cr(VI) ions from aqueous solutions is in the following order: Ni-CP<Ni-Gly≤Ni-VP.
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Czikkely, Marton, Eva Neubauer, Ilona Fekete, Prespa Ymeri, and Csaba Fogarassy. "Review of Heavy Metal Adsorption Processes by Several Organic Matters from Wastewaters." Water 10, no. 10 (October 1, 2018): 1377. http://dx.doi.org/10.3390/w10101377.

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Heavy metal contamination of natural rivers and wastewaters is a problem for both the environment and human society. The accumulation and adsorption of heavy metals could happen with several organic and inorganic matters, but the most used adsorbents are (biological and chemical) organic compounds. This review article presents the basics of heavy metal adsorption on several organic surfaces. There are many organic matters, which seem to be useful as agents for heavy metal adsorption. All of the cited authors and articles present the adsorption kinetics by the most used isotherm models (such as Langmuir and Freundlich isotherms). By comparing several research results presented by a pre-selected assortment of papers, we would like to give an overview of the microbiological, organic chemical, and other surface adsorption possibilities. We draw conclusions for two new adsorption fields (adsorption with biosorbent and artificial materials). We present an optional possibility to study adsorption kinetics, efficiency and regeneration methods to successfully conclude the heavy metal treatment process, and we make some recommendations about the efficient water usage calculations using the water allowance coefficient (WAC) indicator.
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Guo, Xue Yi, Sha Liang, and Qing Hua Tian. "Removal of Heavy Metal Ions from Aqueous Solutions by Adsorption Using Modified Orange Peel as Adsorbent." Advanced Materials Research 236-238 (May 2011): 237–40. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.237.

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In this study, orange peel (OP) was modified by KCl to prepare a novel orange peel adsorbent named as KOP. The adsorption behaviors of KOP for five heavy metals (Cu2+, Cd2+, Pb2+, Zn2+, Ni2+) were studied. The effects of pH, adsorption time and metal ion concentration on single heavy metal solution adsorption by KOP were investigated. All adsorption processes can attain equilibrium with 20min and kinetics data of five heavy metal ions were fitted to pseudo-second-equation; the maximum adsorption capacities for Cu2+, Cd2+, Pb2+, Zn2+and Ni2+were calculated as 59.77, 125.63, 141.84, 45.29 and 49.14 mg/g, respectively. Recycle and reuse experiments indicate that KOP could be used for more than 10 cycles. The effect of coexist metal ions on adsorption can be neglected.
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Bauer, Tatiana, Tatiana Minkina, Saglara Mandzhieva, Marina Burachevskaya, and Maria Zharkova. "Biochar application to detoxification of the heavy metal-contaminated fluvisols." E3S Web of Conferences 175 (2020): 09009. http://dx.doi.org/10.1051/e3sconf/202017509009.

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Sorption of heavy metals on solid matrices such as soils is one of the key processes which determine the fate of contaminants in the environment. Knowledge of adsorption behavior of heavy metals using biochar is essential for their application in soil remediation. Using the adsorption method, the possibility of using a wood biochar to detoxify Fluvisols contaminated with heavy metals (for example, copper) was studied. It is shown that the addition of biochar increases the metal adsorption capacity of soil. The results were analysed using the Langmuir and Freindlich isotherm equations. It was concluded that biocar can be applied to immobilize heavy metals in contaminated soils.
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Dissertations / Theses on the topic "Heavy metal Adsorption"

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Ngule, Chrispus M. Jr. "In Vitro Adsorption of Heavy Metals Using Metal-Organic Frameworks." Youngstown State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1597664070125999.

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Zvinowanda, CM, JO Okonkwo, PN Shabalala, and NM Agyei. "A novel adsorbent for heavy metal remediation in aqueous environments." International Journal of Environmental Science and Technology, 2009. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001474.

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Abstract The objective of this study was to investigate the possibility of using maize tassel as an alternative adsorbent for the removal of chromium (VI) and cadmium (II) ions from aqueous solutions. The effect of pH, solution temperature, contact time, initial metal ion concentration and adsorbent dose on the adsorption of chromium (VI) and cadmium (II) by tassel was investigated using batch methods. Adsorption for both chromium (VI) and cadmium (II) was found to be highly pH dependent compared to the other parameters investigated. Obtained results gave an adsorption capacity of 79.1 % for chromium (VI) at pH 2, exposure time of 1h at 25 ºC. Maximum capacity of cadmium of 88 % was obtained in the pH range of 5-6 at 25 ºC after exposure time of 1 h. The adsorption capacities of tassel for both chromium (VI) and cadmium (II) were found to be comparable to those of other commercial adsorbents currently in use for the removal of heavy metals from aqueous wastes. These results have demonstrated the immense potential of maize tassel as an alternative adsorbent for toxic metal ions remediation in polluted water and wastewater.
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PULS, ROBERT WILLIAM. "ADSORPTION OF HEAVY METALS ON SOIL CLAYS (KAOLINITE, CADMIUM, MONTMORILLONITE, ZINC)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183889.

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Metal cation adsorption is the predominant chemical mechanism governing the attenuation of toxic metal movement in soils. Clay minerals are the primary adsorbent surfaces in soils due to their ubiquitous nature and large reactive surface area. This study examined the relative affinity of the metals cadmium, nickel and zinc for the clay minerals kaolinite and montmorillonite. The influence which different mineral adsorbents and different complexing ligands in solution have on the adsorption of metal ions was assessed using the Hard-Soft Acid-Base Principle as a theoretical framework for predicting the maximum extent of adsorption and rate of adsorption. The HSAB principle is that hard bases prefer to complex hard acids and soft bases prefer to complex soft acids. The hypothesis that initiated these investigations was that the hard-soft character of mineral surfaces is due to their surface functional groups and can be measured using metal cation adsorption selectivity experiments where pH and complex ion formation are controlled. When complex ion formation in aqueous solution was minimized (i.e. in Ca(ClO₄)₂), adsorption decreased in the order of decreasing softness, CD > Zn > Ni for both clay minerals. Montmorillonite behaved as a slightly harder Lewis base than kaolinite, sorbing the harder Ni and Zn ions to a greater extent than Cd, although both minerals behaved as soft Lewis bases. In the presence of chloride and sulfate ligands, adsorption sequences changed and reflected results from typical soil solution studies. In some cases the adsorption sequences can be explained using the HSAB principle together with computer speciation data and this approach merits further consideration and research. Adsorption over time and calculated adsorption rate constants were generally consistent with equilibrium selectivity data. Adsorption rates decreased in the order Cd > Zn > Ni in Ca(ClO₄)₂ for both clay minerals. The adsorption curves reflect a two-step adsorption process involving a rapid exchange-type reaction followed by a much slower adsorption involving diffusion into the crystal or alteration of the surface through the formation of a new solid phase involving the adsorbed ions.
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Jia, Yong Feng. "Adsorption of heavy metal ion species from aqueous solution in activated carbon." Thesis, University of Newcastle Upon Tyne, 2000. http://hdl.handle.net/10443/519.

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Activated carbons are used widely for the adsorption of environmentally unfriendly species from both liquid and gas phases, the separation of gases and adsorption of species from aqueous solution. Examples of the processes are the adsorption of Au(CN)2 and Ag(CN)2 from aqueous solution for the recovery of precious metals, the treatment of waste water containing organic chemicals and toxic metal species and the preparation of metal catalysts supported on carbon. This investigation has involved the study of the influence of porous structure and surface functional groups on the adsorption of both anionic and cationic metal species in order to understand the mechanism of adsorption of these species on active carbon from aqueous solution. Various types of oxygen functional groups were introduced onto the surface of coconut shell derived activated carbon through oxidation using nitric acid. Fourier transform infrared spectroscopy (FTIR), temperature programmed desorption (TPD) and selective neutralisation were used to characterise the surface oxygen functional groups. The oxidised carbons were also heat treated to provide a suite of carbons where the oxygen functional groups of various thermal stability were varied progressively. It was found that acidic oxygen functional groups mainly as carboxylic acid groups were incorporated into activated carbon by HNO3 oxidation. The phenol and quinone groups were also introduced by the oxidation process while the lactone groups were formed during heat treatment. The oxygen functional groups had a range of thermal stabilities with carboxylic acid groups being the least stable. A coconut shell derived active carbon was treated with ammonia and nitric acid followed by ammonia to incorporate nitrogen functional groups into the carbon. Active carbon with high nitrogen content was also prepared from nitrogen-rich precursor polyacrylonitrile (PAN). X-ray absorption near edge structure spectroscopy (XANES) and FTIR were used to investigate the structures of the nitrogen functional groups in carbons. The possible nitrogen functional groups present on carbon surface were pyridinic, pyrrolic (or indolic), pyridonic and aromatic amine-like structures. The adsorption characteristics of gold and silver cyanide anionic species on a suite of active carbons derived from coconut shell, polyacrylonitrile and chemical modification of the coconut shell carbon were investigated. The gold and silver cyanide adsorption capacities for coconut shell derived carbons correlate with total pore volume. Nitric acid oxidation treatment of the carbon was detrimental to gold adsorption in spite of the incorporation of oxygen content of carbon. The influence of nitrogen functional groups in the carbon structure on gold and silver adsorption was investigated using carbons derived from polyacrylonitrile. The addition of ethanol and butanol to the solution had an adverse effect on gold adsorption. Adsorption of silver cyanide ionic species on the active carbon was suppressed in the presence of excess free cyanide ions in solution whereas gold cyanide adsorption was not greatly affected at room temperature. The adsorption of gold cyanide was suppressed by the excess free cyanide and sodium sulphide at 70 °C. The adsorption of cadmium ions was enhanced dramatically by oxidation of the carbon. The ratio of released proton to adsorbed cadmium on oxidised carbon was approximately 2 indicating cation exchange was involved in the adsorption process. Na+ exchange studies with the oxidised carbon gave a similar ratio. After heat treatment of the oxidised carbons to remove oxygen functional groups, the ratio of H+/Cd2+ decreased significantly as well as the adsorption capacity. Both reversible and irreversible adsorption were involved in the process of cadmium adsorption with reversible adsorption having higher enthalpy. The irreversible adsorption resulted from cation exchange with carboxylic acid groups whereas the reversible adsorption probably involved physisorption of the partially hydrated cadmium ion. The nitrogen functional groups may act as ligands which can coordinate with transition metal cations. The adsorption of transition metal cations such as Cd 2+, Ni2+ and Cu2+ on active carbon was appreciably increased by the nitrogen functional groups present on carbon surface whereas ammonia treatment of the carbon showed little effect on the adsorption of alkali earth metal cation Cat+. There is little difference in the adsorption capacities of cadmium ions on coconut shell derived carbon at pH 4.1 and pH 7 whereas the adsorption of cadmium ions was significantly enhanced with increasing pH for the carbons with high nitrogen content. The nitrogen rich carbons show selectivity towards various transition metal cations reflected by adsorbing more Cu 2+ than Cd2+. This is consistent with the fact that the coordination compound of Cu 2+ with pyridine has higher stability constant than that of cadmium.
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Keleşoğlu, Serkan Polat Hürriyet. "Comparative adsorption studies of heavy metal ions on chitin and chitosan biopolymers/." [s.l.]: [s.n.], 2007. http://library.iyte.edu.tr/tezlerengelli/master/kimya/T000622.pdf.

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Alam, Tanvir E. "Metal Oxide Graphene Nanocomposites for Organic and Heavy Metal Remediation." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/3945.

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This thesis consists of two research problems in the water decontamination area. In the first work, the main focus is to understand the structure and photocatalytic activity of titanium dioxide with graphene (G-TiO2) which is synthesized by using sol-gel method. The photocatalytic activity of TiO2 is limited by the short electron hole pair recombination time. Graphene, with high specific surface area and unique electronic properties, can be used as a good support for TiO2 to enhance the photocatalytic activity. The obtained G-TiO2 photocatalysts has been characterized by X-Ray Diffraction (XRD), Raman Spectroscopy, Transmission Electron Microscopy (TEM), FTIR Spectroscopy and Ultraviolet visible (UV-vis) Spectroscopy. This prepared G-TiO2 nanocomposite exhibited excellent photocatalysis degradation on methyl orange (MO) under irradiation of simulated sunlight. Such enthralling photocatalyst may find substantial applications in various fields. The primary objective of the second work is to understand the nanocomposite structure of SiO2 coated over graphene (G) nanoplatelets. An attempt has been made to synthesize G-SiO2 nanocomposite using sol-gel technique. The G-SiO2 nanocomposite is characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Raman spectroscopy, FTIR spectroscopy, and Electrochemical and Electrical measurement technique, respectively. In this work, G-SiO2 nanoparticles with the water containing salts of zinc is added, and allowed to settle in water. The ZnCl2 ix concentration displays a whitish color solution which has turned to colorless within one or two hours of treatment with G-SiO2 nanocomposites. The presence of heavy metal is tested using electrochemical cyclic voltammetry (CV) technique. The CV measurement on the water treated with G-SiO2 has been tested for several days to understand the presence of heavy metals in water. Interestingly, the near complete separation has been observed by treating the heavy metal contaminated water sample for one to two days in presence of G-SiO2 nanoparticles. The redox potential observed for the heavy metal has been found to diminish as a function of treatment with respect to time, and no redox peak is observed after the treatment for four to five days. Further test using EDS measurement indicates that the heavy metal ions are observed within the G-SiO2 nanocomposite. The recovery of G-SiO2 nanocomposite is obtained by washing using deionized water. Our experimental finding indicates that the G-SiO2 nanocomposite could be exploited for potential heavy metals cleaning from waste or drinking water.
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Kothalawala, Kothalawalage Nuwan. "Nanoporous high surface area silicas with chelating groups for heavy metal ion adsorption from aqueous solution /." View online, 2010. http://repository.eiu.edu/theses/docs/32211131524422.pdf.

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Karimanal, Kamalakannan Venkatasan. "Adsorption of saturated heavy metal vapors from combustion sources by condensation onto suspended sorbents /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Tayab, Muhammad Rehan. "Environmental impact of heavy metal pollution in natural aquatic systems." Thesis, Brunel University, 1991. http://bura.brunel.ac.uk/handle/2438/5503.

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The distribution of heavy metals between soil and soil solutions is a key issue in evaluating the environmental impact of long term applications of heavy metals to land. Contamination of soils by heavy metals has been reported by many workers. Metal adsorption is affected by many factors, including soil pH, clay mineralogy, abundance of oxides and organic matter, soil composition and solution ionic strength. The pH is one of the many factors affecting mobility of heavy metals in soils and it is likely to be the most easily managed and the most significant. To provide the appropriate level of protection for aquatic life and other uses of the resource, it is important to be able to predict the environmental distribution of important metals on spatial and temporal scales and to do so with particular emphasis on the water column concentrations. Regulatory levels reflected in water quality criteria or standards are based on water column concentrations. Predicting water column concentrations requires a consideration of the interactions of water column contaminants with both bed sediments and suspended particulates as critical components in the assessment. The adsorption behaviour of cadmium, copper, lead and zinc onto soils is studied under the various geo-environmental conditions of pH, concentration of adsorbate and adsorbent, and solution compositions. Experiments were conducted to determine the equilibrium contact time of various adsorbates for adsorbent in different systems. Experiments were also conducted to check the efficiency of various acid-mixtures to extract heavy metal from soils into the aqueous phase. The adsorption behaviour of heavy metals onto soils was also studied from sea-water system. Soils are characterized in terms of the role of clay minerals to remove the metals from the solution phase, back-ground levels of metals, maximum adsorption capacity to adsorb various heavy metals from different adsorption systems, and type of surface sites present. The experimental data of metal adsorption is described by Langmuir adsorption model. The adsorption data are also expressed in terms of surface loading, surface acidity, adsorption density, and affinity of soils for heavy metals in different adsorption systems. Ecological implications of changes in physical and chemical conditions in aquatic systems on heavy metals uptake by soils are also discussed. This research covers the following areas: the environmental impact of heavy metal discharge into the aquatic systems, the study of the mobility patterns of different heavy metals as function of geo-environmental conditions, and determination of the pathways and the ultimate fate of heavy metals in the environment.
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10

Weber, L. A. (Lawrence Adna) 1907. "The permeability and adsorption capability of kaolinite and bentonite clays under heavy metal leaching /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59904.

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Two soils, a kaolinite clay and a mixture of sand and sodium bentonite were used in this study to determine the effects of a heavy metal permeant on the materials' hydraulic conductivity and adsorption capability. A contaminant solution of lead nitrate was leached through the specimens. The permeability tests were repeated over a range of hydraulic gradients for several different concentrations of lead.
The results from this study indicated that the hydraulic conductivity of the kaolinite clay was unaffected by permeation with the lead solution. The sand/bentonite mixture showed an increase in permeability of more than one order of magnitude, although this change was dependent on a high concentration of lead and particle migration.
For both soils, the majority of the lead was retained in the bottom third of the samples. Breakthrough of lead only occurred in the samples permeated with the most concentrated lead solutions.
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Books on the topic "Heavy metal Adsorption"

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Brown, Jennifer. Heavy metal ion adsorption by thiol-functionalized nanoporous silica. Sudbury, Ont: Laurentian University, 1998.

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Quek, Siew Young. Adsorption of heavy metal from aqueous solution by natural low-cost materials. Birmingham: University of Birmingham, 1998.

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Competitive sorption and transport of heavy metals in soils and geological media. Boca Raton: Taylor & Francis, 2012.

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Antonio Carlos A. da Costa. An emerging biotechnology for metal containing waste water treatment. Rio de Janeiro, RJ, Brasil: MCT, CNPq, CETEM, 1997.

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Antonio Carlos A. da Costa. An emerging biotechnology for metal containing waste water treatment. Rio de Janeiro, RJ, Brasil: MCT, CNPq, CETEM, 1997.

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Jeffers, T. H. Biosorption of metal contaminants using immobilized biomass: Field studies. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1993.

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Jeffers, T. H. Biosorption of metal contaminants using immobilized biomass: Field studies. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1993.

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Jeffers, T. H. Biosorption of metal contaminants using immobilized biomass: A laboratory study. Pgh. [i.e. Pittsburgh] PA: United States Dept. of the Interior, Bureau of Mines, 1991.

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Putilina, V. S. Adsorbt︠s︡ii︠a︡ ti︠a︡zhelykh metallov pochvami i gornymi porodami: Kharakteristiki sorbenta, uslovii︠a︡, parametry i mekhanizmy adsorbt︠s︡ii, analiticheskiĭ obzor. Novosibirsk: GPNTB SO RAN, 2009.

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Putilina, V. S. Adsorbt︠s︡ii︠a︡ ti︠a︡zhelykh metallov pochvami i gornymi porodami: Kharakteristiki sorbenta, uslovii︠a︡, parametry i mekhanizmy adsorbt︠s︡ii, analiticheskiĭ obzor. Novosibirsk: GPNTB SO RAN, 2009.

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Book chapters on the topic "Heavy metal Adsorption"

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Anjum, Ansar. "Adsorption Technology for Removal of Toxic Pollutants." In Sustainable Heavy Metal Remediation, 25–80. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61146-4_2.

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Kanap, Yaţar, Seyyid Irmak, and Hikmet Gunal. "Path Analysis of Some Heavy Metal Adsorption by Soil." In Proceedings of the Fourth International Conference on Precision Agriculture, 91–100. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/1999.precisionagproc4.c8.

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Tsao, George T., Yizhou Zheng, Jean Lu, and Cheng S. Gong. "Adsorption of Heavy Metal Ions by Immobilized Phytic Acid." In Biotechnology for Fuels and Chemicals, 731–41. Totowa, NJ: Humana Press, 1997. http://dx.doi.org/10.1007/978-1-4612-2312-2_65.

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Pham, Thi-Huong, and Byeong-Kyu Lee. "Improved Removal of Toxic Contaminants in Water by Green Adsorbents: Nanozeolite and Metal-Nanozeolite for the Removal of Heavy Metals and Phenolic Compounds." In Aqueous Phase Adsorption, 181–212. Boca Raton : Taylor & Francis, CRC Press, 2019.: CRC Press, 2018. http://dx.doi.org/10.1201/9781351272520-7.

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Bajracharya, K., D. A. Barry, S. Vigneswaran, and A. Das Gupta. "Heavy Metal Adsorption in Soil: Comparison of Bisolute Adsorption Models and Laboratory Experiments." In Water-Quality Hydrology, 19–26. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0393-0_2.

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Papachristou, E., G. Vasilikiotis, and C. Alexiades. "Selective Adsorption of Heavy Metal Cations by Using Fly Ash." In Appropriate Waste Management for Developing Countries, 395–404. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2457-7_28.

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Ye, W. M., Yong He, Y. G. Chen, Bao Chen, and Y. J. Cui. "Adsorption, Desorption and Competitive Adsorption of Heavy Metal Ions from Aqueous Solution onto GMZ01 Bentonite." In Engineering Geology for Society and Territory - Volume 6, 533–36. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09060-3_95.

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Igberase, Ephraim, Peter Ogbemudia Osifo, Tumisang Seodigeng, and Ikenna Emeji. "A Comprehensive Approach to Heavy Metal Removal by Adsorption: A Review." In Enhanced Chitosan Material for Water Treatment, 1–24. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71722-3_1.

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Narwade, Vijaykiran N., Yasir Beeran Pottathara, Sumayya Begum, Rajendra S. Khairnar, and Kashinath A. Bogle. "Cellulose Based Bio Polymers: Synthesis, Functionalization and Applications in Heavy Metal Adsorption." In Biofibers and Biopolymers for Biocomposites, 247–57. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-40301-0_12.

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Zhao, Lifang, Qingsong Liu, Shiyue Liu, Wencong Zhao, Haoming Li, and Bing Han. "Effects of biochar pyrolysis temperature on its characteristics and heavy metal adsorption." In Advances in Materials Science, Energy Technology and Environmental Engineering, 419–22. P.O. Box 11320, 2301 EH Leiden, The Netherlands, e-mail: Pub.NL@taylorandfrancis.com , www.crcpress.com – www.taylorandfrancis.com: CRC Press/Balkema, 2016. http://dx.doi.org/10.1201/9781315227047-84.

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Conference papers on the topic "Heavy metal Adsorption"

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Zhongyi An, Maoan Du, Tongqin Zhang, and Huichao Zhang. "Characteristics of heavy metal ions adsorption by activated carbon." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5964700.

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Zheng, Chaocheng. "Adsorption of heavy metal in freeway by asphalt block." In GREEN ENERGY AND SUSTAINABLE DEVELOPMENT I: Proceedings of the International Conference on Green Energy and Sustainable Development (GESD 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.4992938.

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Omole, David O., Julius M. Ndambuki, Chuks A. Nwafor-Oritzu, and Christian E. Obata. "Development of a Water Treatment Plant for Heavy Metal Adsorption." In Environment and Water Resource Management. Calgary,AB,Canada: ACTAPRESS, 2014. http://dx.doi.org/10.2316/p.2014.812-002.

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Hu, Haixiang, and Ganlin Liu. "The Trend of Heavy Metal Wastewater Treatment by Adsorption Method." In 2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2012. http://dx.doi.org/10.1109/rsete.2012.6260791.

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Bingtao Liu, Li Zhang, and Hairong Wang. "Study of adsorption of heavy metal ions onto new type resin." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5966259.

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ZHAO, GEORGE X. S., J. L. LEE, and P. A. CHIA. "TITANOSILICATE ETS-10: SYNTHESIS, CHARACTERIZATION AND ADSORPTION FOR HEAVY METAL IONS." In Proceedings of the Third Pacific Basin Conference. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812704320_0056.

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Liu, Sheng-Yu, Jin Gao, Bin Qu, and Yijin Yang. "Adsorption Behaviors of Heavy Metal Ions by Steel Slag-An Industrial Solidwaste." In 2009 3rd International Conference on Bioinformatics and Biomedical Engineering (iCBBE). IEEE, 2009. http://dx.doi.org/10.1109/icbbe.2009.5162282.

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Yu, Chunguang, and Dayu Zheng. "The Adsorption of Heavy Metal in Wastewater by Modified Chinese Walnut Shell." In International Conference on Materials Engineering and Information Technology Applications (MEITA 2015). Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/meita-15.2015.85.

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Yu, Chunguang, and Xuena Han. "The Adsorption of Coexisting Heavy Metal Ions by Modified Chinese Walnut Shell." In International Conference on Materials Engineering and Information Technology Applications (MEITA 2015). Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/meita-15.2015.87.

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Xie, Wancui, Ziqi Li, Meiqi Yang, and Xihong Yang. "Preparation of carboxymethyl chitosan microspheres and the adsorption of heavy metal cadmium." In 2016 International Conference on Innovative Material Science and Technology (IMST 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/imst-16.2016.45.

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