Sustainable Use of Locally Available Red Earth and Black Cotton Soils in Retaining Cd2+ and Ni2+ from Aqueous Solutions

Mohammed, Syed Abu Sayeed; Sanaulla, P. F.; Moghal, Arif Ali Baig

doi:10.1007/s40999-016-0052-z

Cited by 17 publications

(6 citation statements)

References 28 publications

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“…Additionaly, the dominance of Cd in the F1 fraction indicates that a high rate of Cd can be reactivated after a slight pH decrease. (Ghrefat et al, 2012;Mohammed et al, 2016). The high amounts of Cd associated with non-residual phases are readily available to the food chain through water sources and soil-grown plants or other mechanisms.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Heavy Metal Fractions in the Soil Developed on Volcanic Rocks of Karadağ Mountain by Sequential Extraction, Turkey

Özaytekin

Dedeoğlu

2022

Preprint

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In this work, the BCR (Community Bureau of Reference) sequential extraction scheme (exchangeable weak acid-soluble, reducible, oxidizable, and non-extractable metal fractions) was applied to selected soil samples. Soil samples were taken from 15 different sites and the contents of Cd, Cr, Cu, Ni, Pb, and Zn in the mobile and residual fractions of the soils formed on the Karadağ volcanic materials were determined by the BCR (BCR method, currently known as SM&T (the Standards Measurements and Testing Programme) sequential extraction procedure and the mobility of each metal was revealed on the basis of fractions. The order of heavy metals in each fraction of Karadağ samples was observed as follows: Cd: Acid and Water Soluble > Reducible > Oxidizable > Residual; Cr: Residual > Oxidizable > Reducable > Acid and Water Soluble; Cu: Residual > Oxidizable > Reducable > Acid and Water Soluble; Ni: Residual > Reducable > Oxidizable > Acid and Water Soluble; Pb: Reducible > Residual > Oxidizable > Acid and Water Soluble; Zn: Residual > Reducable > Oxidizable > Acid and Water Soluble According to the data obtained, while the concentrations of Cd and Pb in the mobile fraction were higher than those in the residual (immobile) fraction in Karadağ; Cr, Cu, Ni, and Zn were higher in the immobile fraction. When the higher mobility levels of, Cd and Pb are evaluated in terms of environmental pollution and toxicity in soil, these metals have been found to have a higher potential risk than other metals. Because the metals in the first three fractions can dissolve depending on environmental conditions, pollute underground and other water resources, and these metals can be taken up by plants. According to the results obtained, Cd and Pb are likely to be in close contact with plant roots and thus could potentially affect soil fertility. In order to avoid threats to productivity and food security in the long term, it has been determined that further trace metal inputs to soils in these areas should be avoided by agricultural management or other means.

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Section: Discussionmentioning

confidence: 99%

Characterization of Heavy Metal Fractions in the Soil Developed on Volcanic Rocks of Karadağ Mountain by Sequential Extraction, Turkey

Özaytekin

Dedeoğlu

2022

Preprint

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“…The role of pH is also important in the retention of Cd in the soil, and the desorption of Cd is observed to increase when pH decreases. Additionally, increase in the pH of soil results in immobilization of Cd ions [32]. Citric acid is observed to desorb Cd to a lesser extent at lower molar concentrations and to a greater extent at higher molar concentrations (see Figure 2).…”

Section: Retention In Soilsmentioning

confidence: 96%

“…Heavy metals that are naturally present in the soil cause less damage than those that accumulate due to human activity [31]. Specifically, Cd is naturally available in earth's crust with a concentration of 0.1-0.5 ppm associated with zinc, copper, and lead ores [32]. Industries play an important role in increasing heavy metal concentrations in surface soils above permissible levels by releasing toxic fumes into the atmosphere, because traces of fumes find their way to the soil surface [33,34].…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Enzymatically Induced Calcium Carbonate Precipitation in the Retention of Heavy Metal Ions

Moghal

Lateef²,

Mohammed³

et al. 2020

Sustainability

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This study evaluated the efficacy of enzyme induced calcite precipitation (EICP) in restricting the mobility of heavy metals in soils. EICP is an environmentally friendly method that has wide ranging applications in the sustainable development of civil infrastructure. The study examined the desorption of three heavy metals from treated and untreated soils using ethylene diamine tetra-acetic acid (EDTA) and citric acid (C6H8O7) extractants under harsh conditions. Two natural soils spiked with cadmium (Cd), nickel (Ni), and lead (Pb) were studied in this research. The soils were treated with three types of enzyme solutions (ESs) to achieve EICP. A combination of urea of one molarity (M), 0.67 M calcium chloride, and urease enzyme (3 g/L) was mixed in deionized (DI) water to prepare enzyme solution 1 (ES1); non-fat milk powder (4 g/L) was added to ES1 to prepare enzyme solution 2 (ES2); and 0.37 M urea, 0.25 M calcium chloride, 0.85 g/L urease enzyme, and 4 g/L non-fat milk powder were mixed in DI water to prepare enzyme solution 3 (ES3). Ni, Cd, and Pb were added with load ratios of 50 and 100 mg/kg to both untreated and treated soils to study the effect of EICP on desorption rates of the heavy metals from soil. Desorption studies were performed after a curing period of 40 days. The curing period started after the soil samples were spiked with heavy metals. Soils treated with ESs were spiked with heavy metals after a curing period of 21 days and then further cured for 40 days. The amount of CaCO3 precipitated in the soil by the ESs was quantified using a gravimetric acid digestion test, which related the desorption of heavy metals to the amount of precipitated CaCO3. The order of desorption was as follows: Cd > Ni > Pb. It was observed that the average maximum removal efficiency of the untreated soil samples (irrespective of the load ratio and contaminants) was approximately 48% when extracted by EDTA and 46% when extracted by citric acid. The soil samples treated with ES2 exhibited average maximum removal efficiencies of 19% and 10% when extracted by EDTA and citric acid, respectively. It was observed that ES2 precipitated a maximum amount of calcium carbonate (CaCO3) when compared to ES1 and ES3 and retained the maximum amount of heavy metals in the soil by forming a CaCO3 shield on the heavy metals, thus decreasing their mobility. An approximate improvement of 30% in the retention of heavy metal ions was observed in soils treated with ESs when compared to untreated soil samples. Therefore, the study suggests that ESs can be an effective alternative in the remediation of soils contaminated with heavy metal ions.

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“…One can obtain results in terms of distribution of various chemical species without actually conducting sorption experiments, which not only saves time but also gives an indication for use on radioactive elements where experimental norms limit repeatability of tests. A lot of work is based on regular and safe contaminants are studied because of regulatory and safety practices but not much work is available due to difficulty in getting radioactive elements [18,19,20,21].…”

Section: Mechanistic Response For Strontium Removal In Soilsmentioning

confidence: 99%

State-of-the-Art Review on Strontium Toxicokinetics, Mechanistic Response, Alterations and Regulations

Moghal¹

2019

GEOMATE

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Strontium is mostly present in oil, coal, soil and rocks in the form of isotopes of four types 84 Sr, 86 Sr, 87 Sr and 88 Sr. It resembles the chemical form of calcium and even replaces the position in bones and other places where calcium finds its importance in the human or animal body. Strontium, if exchanged with calcium in greater quantity, can cause serious effects like cancer in bone and its neighbouring tissues and necrotic lesions. However, the effect is negligible when the exchange is lesser. If present in the geo-environment, strontium compounds in both forms stable or radioactive percolates in the groundwater, but a majority of this compound present in soil remains undisturbed for a considerable amount of time. The permissible amount of strontium which can be acceptable in water according to the US Environmental Protection Agency (USEPA) is 4 mg L 1 . Further presence of strontium up to 240 mg kg 1 in soil is considered as less toxic to grownups not suffering from malnutrition. Anthropogenic and natural activities leading to the release of strontium in the atmosphere pose a chance of transportation and deposition by the wet deposition method. The natural treatment of strontium by biodegradation or hydrolysis does not decay atoms of strontium due to its form. This paper deals with the chemical and physical properties and toxico-kinetics of strontium. Moreover, few points pertaining to health of flora and fauna when it is in direct contact with strontium and the safety concerns with relevant regulations are discussed.

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Sustainable Use of Locally Available Red Earth and Black Cotton Soils in Retaining Cd2+ and Ni2+ from Aqueous Solutions

Cited by 17 publications

References 28 publications

Characterization of Heavy Metal Fractions in the Soil Developed on Volcanic Rocks of Karadağ Mountain by Sequential Extraction, Turkey

Characterization of Heavy Metal Fractions in the Soil Developed on Volcanic Rocks of Karadağ Mountain by Sequential Extraction, Turkey

Efficacy of Enzymatically Induced Calcium Carbonate Precipitation in the Retention of Heavy Metal Ions

State-of-the-Art Review on Strontium Toxicokinetics, Mechanistic Response, Alterations and Regulations

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