Characterization and role of derived dissolved organic matter on arsenic mobilization in alluvial aquifers of Punjab, Pakistan

Malik, Aroosa; Parvaiz, Ambreen; Mushtaq, Nisbah; Hussain, Ijaz; Javed, Tariq; Rehman, Hafiz Ur; Farooqi, Abida

doi:10.1016/j.chemosphere.2020.126374

Cited by 38 publications

(17 citation statements)

References 69 publications

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“…These results indicated that the reduction in the As bioavailability by amendments and the correction of soil pH from acidic to neutral had a greater effect on improving soil quality than the adverse effect of DOC increased by increasing pH. Although dissolved organic matter played a vital role in the As mobility in soil and groundwater system, it was judged that its role was relatively small when it was not originated in the natural equilibrium state but by an amendment introduced from an external system [ 59 ]. These results suggested that AMDS application seems to be an effective chemical amendment for As stabilization in acid soil condition despite of the slight increases in DOC.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Two Amendments (Biochar and Acid Mine Drainage Sludge) on Arsenic Contaminated Soil Using Chemical, Biological, and Ecological Assessments

Kim

Lee²,

Park

et al. 2021

Materials

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Various types of organic and inorganic materials are widely examined and applied into the arsenic (As) contaminated soil to stabilize As bioavailability and to enhance soil quality as an amendment. This study deals with two types of amendments: biochar for organic amendment and acid mine drainage sludge (AMDS) for inorganic amendment. Each amendment was applied in two types of As contaminated soils: one showed low contaminated concentration and acid property and the other showed high contaminated concentration and alkali property. In order to comprehensively evaluate the effect of amendments on As contaminated soil, chemical (As bioavailability), biological phytotoxicity (Lactuca sativa), soil respiration activity, dehydrogenase activity, urease activity, ß-glucosidase activity, and acid/alkali phosphomonoesterase activity, an ecological (total bacterial cells and total metagenomics DNA at the phylum level) assessment was conducted. Both amendments increased soil pH and dissolved organic carbon (DOC), which changes the bioavailability of As. In reducing phytotoxicity to As, the AMDS was the most effective regardless of soil types. Although soil enzyme activity results were not consistent with amendments types and soil types, bacterial diversity was increased after amendment application in acid soil. In acid soil, the results of principal component analysis represented that AMDS contributes to improve soil quality through the reduction in As bioavailability and the correction of soil pH from acidic to neutral condition, despite the increases in DOC. However, soil DOC had a negative effect on As bioavailability, phytotoxicity and some enzyme activity in alkali soil. Taken together, it is necessary to comprehensively evaluate the interaction of chemical, biological, and ecological properties according to soil pH in the decision-making stages for the selection of appropriate soil restoration material.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Two Amendments (Biochar and Acid Mine Drainage Sludge) on Arsenic Contaminated Soil Using Chemical, Biological, and Ecological Assessments

Kim

Lee²,

Park

et al. 2021

Materials

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“…Higher As and F − in shallow groundwater than in deep groundwater are found in south Punjab [29] which is different from east Punjab, Lahore [28]. Release of As in east Punjab may be due to reductive dissolution of FeO(OH) with dissolved organic matter (natural or anthropogenic from animal or agriculture) [20], while south Punjab As release can be due to oxidative/evaporative mechanism, in addition to phosphate interaction at high pH [29]. Saline intrusion is also result of water tube well extraction [28,30].…”

Section: Introductionmentioning

confidence: 94%

“…Geological studies revealed anthropogenic sources are polluting groundwater, as shallow aquifer has high As [20] and F − than deep aquifer [21]. Therefore, it is expected that socioeconomic sources are playing more significant role in controlling groundwater quality than geochemical factors [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Socioeconomic and recharge effect on spatial changes in the groundwater chemistry of Punjab, Pakistan: a multivariate statistical approach

Khan

2020

SN Appl. Sci.

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This study presents deterioration in groundwater quality of highly populated region of Punjab Province, Pakistan, by linking chemical data with rain, river recharge, and socioeconomic factors. Various chemical parameters like total dissolved solid (TDS), arsenic (As), fluoride (F − ), Iron (Fe), nitrate (NO 3 − ), nitrite (NO 2 − ), and pH were determined for 46,457 samples collected from 205,344 km 2 area of the Punjab. The samples were collected, stored, and analyzed as per the Environment Protection Agency (EPA) methods at laboratory. Commercial kits were used for analysis of Fe, As, NO 2 − , NO 3 − and F − , while TDS and pH were measured by respective meters. Chemical parameters were correlated with human and animal population, fertilizers consumption, tube wells, industrial density, rain occurrence, and river recharge rate. Data were analyzed using XLSTAT, and GIS 10.3 was used to draw the maps. Spatial classification of the districts was performed by principal component analysis and hierarchal cluster analysis.

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“…where W SP is the amount of spent adsorbent added to the test solvent [g], V is the liquid volume of the test solvent [L], and W SP /V is the addition concentration of the spent adsorbent [g/L]. Table 9 lists the values of the E AS obtained using Equation (7). Figure 5 shows a plot of E AS against C Si-T0 .…”

Section: Relative Evaluation Using As Leaching Ratiomentioning

confidence: 99%

“…There are numerous reports on groundwater contamination with arsenic (As), which is a global problem. In recent years, it has become a major challenge in regions across Asia (such as Bangladesh [1-5], Pakistan [6,7], Iran [8], India [9][10][11], Sri Lanka [12], Vietnam [13,14], Cambodia [15], and China [16][17][18]), Latin America (such as Argentina [19,20], Uruguay [21], and Mexico [22,23]) and West and South Africa [24,25]. Podgorski and Berg [26] reported the arsenic pollution in groundwater around the world; the proportion of affected area in Asia was 64%, in South America 14%, North America 10%, Africa 9%, Oceania 2% and Europe 1%.…”

Section: Introductionmentioning

confidence: 99%

Effects of Silicic Acid on Leaching Behavior of Arsenic from Spent Calcium-Based Adsorbents with Arsenite

et al. 2021

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The spent adsorbents that remain after being used to purify As-contaminated water constitute waste containing a large amount of As. These spent adsorbents, after being disposed, are likely to come into contact with silicic acid leached from the soil or cementitious solidification materials. Thus, it is crucial the evaluate the effects of silicic acid on spent adsorbents. In this study, the effects of silicic acid on spent Ca-based (CaO and Ca(OH)2) adsorbents with arsenite were investigated. The As leaching ratio for the spent adsorbents decreased with an increase in the initial concentration of silicic acid in the liquid. Under the tested conditions, the As leaching ratio decreased from 8–9% to less than 0.7% in the presence of silicic acid at an initial Si-normalized concentration of 100 mg/L. The primary mechanism behind the inhibition of As leaching by silicic acid was determined to be re-immobilization via the incorporation of arsenite during the formation of calcium silicates. In the presence of silicic acid, spent Ca-based adsorbents with arsenite had a lower As leaching ratio than those with arsenate. Therefore, spent Ca-based adsorbents with arsenite were found to have a higher environmental stability than those with arsenate.

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Characterization and role of derived dissolved organic matter on arsenic mobilization in alluvial aquifers of Punjab, Pakistan

Cited by 38 publications

References 69 publications

Evaluation of Two Amendments (Biochar and Acid Mine Drainage Sludge) on Arsenic Contaminated Soil Using Chemical, Biological, and Ecological Assessments

Evaluation of Two Amendments (Biochar and Acid Mine Drainage Sludge) on Arsenic Contaminated Soil Using Chemical, Biological, and Ecological Assessments

Socioeconomic and recharge effect on spatial changes in the groundwater chemistry of Punjab, Pakistan: a multivariate statistical approach

Effects of Silicic Acid on Leaching Behavior of Arsenic from Spent Calcium-Based Adsorbents with Arsenite

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