Evaluation of pectin binding of heavy metal ions in aqueous solutions

Кartel, M. T.; Kupchik, L. A.; Veisov, B. K.

doi:10.1016/s0045-6535(98)00466-4

Cited by 131 publications

(76 citation statements)

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“…This sequence indicates that citrus plants probably minimized the translocation of heavy metals to the edible parts of the plant to reach less than 8, 16, 19 and 8% of the corresponding concentrations in leaves for Pb, Ni, Co and Cd, respectively. It is worthy to mention that flavedo and albedo are rich in pectin (Mamma and Christakopoulos, 2014) which can bind heavy metal ions (Kartel et al, 1999). Heavy metals are sorbed on their active functional groups (Marín et al, 2010).…”

Section: Heavy Metals In Citrus Trees Grown On the Left Side Of The Hmentioning

confidence: 99%

Accumulation of some heavy metals in plants and soils adjacent to Cairo – Alexandria agricultural highway

et al. 2017

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A UTOMOBILE exhausts are considered the main source of air pollution with heavy metals. Airborne pollutants are precipitated on soils surrounding highways causing serious ecological hazards. The current study aimed at evaluating levels of Pb, Ni, Co and Cd in surface (015-cm) and subsurface (1540-cm) soils nearby Cairo-Alexandria agricultural highway, and their accumulation in plants grown thereon. Seven locations were sampled at interval distances 50 meters on both sides of the highway road near Toukh city (Qualubya Governorate). Cabbage and citrus plants were also sampled and separated into its parts. Results revealed that the investigated soils are contaminated with Pb, Ni and Cd. These contaminants were brought to the subsurface layers of the soil at relatively high concentrations. Total and DTPA-extractable contents of Pb and Ni in the top surface soil decreased with increasing the distance from the high way on both sides of the road. Moreover, concentrations of these metals in the cabbage parts were significantly correlated with their total and DTPA-extractable contents. However, Co and Cd in soils seemed to be not affected by the exhausts of the cars on the highway. Heavy metals decreased in cabbage parts as follows: root > stem > outer leaves > inner leaves > core. Calculated BAF values for Pb, Ni and Co were very low indicating that cabbage might be an excluder for these metals whereas, their transfer from roots to shoots (transfer factor, Ts) were high. Heavy metal concentrations in citrus decreased as leaves > flavedo > albedo > segments. Generally, concentrations of heavy metals in plants particularly Pb exceeded the permissible limits. 19

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Section: Heavy Metals In Citrus Trees Grown On the Left Side Of The Hmentioning

confidence: 99%

Accumulation of some heavy metals in plants and soils adjacent to Cairo – Alexandria agricultural highway

et al. 2017

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“…Polysaccharides play a crucial role in TM binding and accumulation in the CW, although other compounds such as proteins, amino acids and phenolics also take part in this process. The ability to bind divalent metal cations depends on the number of functional groups such as -COOH, -OH and -SH occurring in CW compounds (Dronnet et al 1996;Kartel et al 1999;Davis et al 2003;Pelloux et al 2007). However, the essential capacity of the CW for binding divalent and trivalent metal cations depends mainly on the amount of polysaccharides abundant in carboxyl groups.…”

Section: Common Features Of Plant Cell Walls That Enable Them To Bindmentioning

confidence: 99%

The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

2010

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This review paper is focused predominantly on the role of the cell wall in the defense response of plants to trace metals. It is generally known that this compartment accumulates toxic divalent and trivalent metal cations both during their uptake by the cell from the environment and at the final stage of their sequestration from the protoplast. However, from results obtained in recent years, our understanding of the role played by the cell wall in plant defense response to toxic metals has markedly altered. It has been shown that this compartment may function not only as a sink for toxic trace metal accumulation, but that it is also actively modified under trace metal stress. These modifications lead to an increase in the capacity of the cell wall to accumulate trace metals and a decrease of its permeability for trace metal migration into the protoplast. One of the most striking alterations is the enhancement of the level of low-methylesterified pectins: the polysaccharides able to bind divalent and trivalent metal ions. This review paper will present the most recent results, especially those that are concerned with polysaccharide level, composition and distribution under trace metal stress, and describe in detail the polysaccharides responsible for metal binding and immobilization in different groups of plants (algae and higher plants). The review also contains information related to the entry pathways of trace metals into the cell wall and their detection methods.

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“…As the pH increased, the overall surface on the dried sugar beet pulp became negative and biosorption increased. When the pH increases, fixation capacities are improved due to the lower competition between the protons and Cu(II) ions (Dronnet et al, 1997;Gerente et al, 2000;Reddad et al, 2002;Kartel et al, 1999). Therefore, pH 7 was recommended throughout all other experiments involved NSBP or BSBP.…”

Section: Temperature Cmentioning

confidence: 99%

“…The agricultural byproducts such as peat, wood, pine park, banana pith, rice bran, wheat bran, peanut shells, wool, rice milling byproducts (hulls and bran), sunflower and grape stalks wastes, sugar beet pulp, olive mill solid residue, sawdust and leaves have been demonstrated to remove heavy metal ions from wastewater. Many examples are available in the literature concerning the direct or activated use of these materials as adsorbents (Lee and Yang, 1997;Sun and Shi, 1998;Ajmal et al, 1998;Gupta and Ali, 2000;Wartelle and Marshall, 2000;Yu et al, 2000;Pagnanelli et al, 2002;Johnson et al, 2002;Ho, 2003;Basci et al, 2004;Villaescusa et al, 2004;Dronnet et al, 1997;Gerente et al, 2000;Reddad et al, 2002;Kartel et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…The pectic substances, which account for more than 40% of the dry matter, are complex heteropolysaccharides containing galacturonic acid, arabinose, galactose and rhamnose as the major sugar constituents. Due to the carboxyl functions of galacturonic acid, pectic substances are known to strongly bind metal cations in aqueous solution (Dronnet et al, 1997;Gerente et al, 2000;Reddad et al, 2002;Kartel et al, 1999). Hence, the present work aims to establish a simple and economic biosorptiveflotation procedure using sugar beet pulp, naturally occurring or readily available and alternative to existing commercial adsorbents, as a sorbent and oleic acid as a surfactant for removing Cu ions from aqueous solution and natural waters under the recommended conditions.…”

Section: Introductionmentioning

confidence: 99%

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Biosorptive-flotation of copper(II) from environmental water samples using sugar beet pulp as sorbent and oleic acid as surfactant

Ghazy

Khedr

Youssef

2009

Chemical Speciation & Bioavailability

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Trace elements, especially toxic metals, are considered to be one of the main sources of pollution in the environment, since they have a significant effect on its ecological quality. The present study aims to develop a simple biosorptive-flotation method to remove Cu(II) from aqueous solutions using sugar beet pulp (SBP) as sorbent and oleic acid (HOL) as surfactant. SBP as an agricultural plant waste (which is an effective and inexpensive sorbent) was used as native sugar beet pulp (NSBP), i.e. without treatment, or after treatment with an acid (ASBP) or a base (BSBP). The main parameters (initial pH, sorbent, Cu 2 þ ions and surfactant concentrations, shaking times, temperature, ionic strength and the presence of foreign ions) that influence the flotation process were examined. Under the optimum experimental conditions, at pH 7 and at room temperature ( $ 25 C), about 100% of Cu(II) was removed. The recommended procedure was successfully applied to recover Cu 2 þ ions spiked in aqueous solution and in natural water samples.

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Evaluation of pectin binding of heavy metal ions in aqueous solutions

Cited by 131 publications

References 1 publication

Accumulation of some heavy metals in plants and soils adjacent to Cairo – Alexandria agricultural highway

Accumulation of some heavy metals in plants and soils adjacent to Cairo – Alexandria agricultural highway

The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

Biosorptive-flotation of copper(II) from environmental water samples using sugar beet pulp as sorbent and oleic acid as surfactant

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