Variations in total organic carbon and grain size distribution in ephemeral river sediments in western India

Dinakaran, J.; Krishnayya, N. S. R.

doi:10.1016/s1001-6279(11)60090-5

Cited by 27 publications

(20 citation statements)

References 20 publications

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“…Due to the heterogeneity (Morris and Fan, 1998) and high level of variability of sediment properties even at small scales (Steiger and Gurnell, 2003;Dinakaran and Krishnayya, 2011), classic statistical methods are not suitable for analyzing the spatial distribution of sediment fractions because spatial components of distribution percentages are not considered in such analyses (Méar et al, 2006). Instead, geostatistical analyses have been widely used in recent studies to determine sediment properties (Méar et al, 2006;Cabezas et al, 2010;de Groot et al, 2011;Jerosch, 2013).…”

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confidence: 99%

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Turgut¹,

Özalp²,

Köse³

2015

Turk J Agric For

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IntroductionSediment is described as solid particles generated by the disintegration process of organic and inorganic materials (Bortone, 2006). These particles, found in various shapes and sizes, can be transported by water, wind, glaciers, and other natural causes (Montgomery et al., 2000). Sediment deposited in deltas and reservoirs are generally fine-grained (sand, silt, and clay) (Kamarudin et al., 2009;Tigrek and Aras, 2011). The sedimentation process depends on the flow regime and flow rate of the river (Kamarudin et al., 2009). Natural rivers are considered balanced with respect to sediment and water inflow and outflow. However, when rivers are controlled, especially by the construction of large dams, this balance can be dramatically changed (Morris and Fan, 1998). The alteration of the natural flow regime leads to changes to the hydrological, geomorphological, and ecological conditions both upstream and downstream (Galay, 1983;Graf, 2006;Magilligan et al., 2013;Csiki and Rhoads, 2014;. Dam construction in rivers decreases velocity, causing a sedimentation increase upstream of the dam. This reduces the storage capacity of reservoirs, thus negatively influencing other benefits of large dams, such as water supply, power production, and flood control (Morris and Fan, 1998). Sedimentation can change geomorphological conditions upstream of reservoir areas. For example, sediments deposited along riverbanks due to reduced flow will narrow the cross-section of a river before it reaches the reservoir, while the accumulated sediments can change the terrain of the bottom of the reservoir (Ryan, 1991;Csiki and Rhoads, 2014). Changes in the amount and composition of sediment, carrying

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mentioning

confidence: 99%

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Turgut¹,

Özalp²,

Köse³

2015

Turk J Agric For

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“…Generally, fine particle sediments are well known as dominant controlling factors to regulate the TOC concentration in surficial sediment [14,20,33]. Figure 6 shows the correlation relationship of high percentage of TOC concentration is directly proportional to fine sediments size and it is accounted for r = 0.67.…”

Section: Ong Et Al: Determination Of Total Organic Carbon Concentratimentioning

confidence: 97%

“…Dinakaran and Krishnayya [14] had suggested that the sediment in the estuary might be affected by backwater system. In addition, the other physical components including tidal alteration might influence the level of TOC in sediments at river mouth [2].…”

Section: Ong Et Al: Determination Of Total Organic Carbon Concentratimentioning

confidence: 99%

“…Figure 6 shows the correlation relationship of high percentage of TOC concentration is directly proportional to fine sediments size and it is accounted for r = 0.67. It was suggesting that the finer grain size sediments might be a significant factor in controlling the TOC content in surficial sediments at Sungai Pinang [14,20,34]. This is because the fine sediments are providing a larger specific surface area and binding sites for organic carbon absorption [4,33,40].…”

Section: Ong Et Al: Determination Of Total Organic Carbon Concentratimentioning

confidence: 99%

“…In addition, previous study by Saad et al [13] had concluded that the water quality of Sungai Pinang had degraded and was classified under V showing a very high level of chemical oxygen demand (COD) which was 1219.33 mg/L, very low in dissolved oxygen (DO) which account for < 1.0 mg/L and the temperature (°C) of water was not categorized in normal range. Apart of that Sungai Pinang is surrounded by heavy industrial and urban areas, the river mouth is an important channel in the distribution of carbon matters [9,14]. Thus, the surficial sediment of Sungai Pinang is exposure to various chemical compound contamination which is contained in the bottom of the water.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Total Organic Carbon Concentration in Surficial Sediments of Sungai Pinang, Penang, Malaysia

Ong¹

2016

MJAS

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The concentration of total organic carbon (TOC) and mean size sediment in a total of 24 samples of surficial sediment were determined. From the results of study, the concentration of TOC (5.33%) was found high nearby the housing area at Sungai Pinang. At the downstream of the river tend to have higher concentration of TOC (1.05% -5.33 %) while at the upstream tend to have low degree of TOC in surficial sediments (0.36% -0.78%). The major contribution in TOC contamination at the bottom part of the river maybe due to anthropogenic activities such as waste effluent from urban runoff, industrial activities and boat activities. Apart from that, the mean grain size was probably an important factor that influences the TOC content in surficial sediment at Sungai Pinang. This is because the distribution of the mean grain size that had similar trend to TOC. In addition, the high correlation relationship between TOC and mean grain size were observed and it had accounted for r = 0.67 owing to fine particles of sediment which had provided a large binding capacity for the sorption of organic carbon. Moreover, fine sediment probably indicates slow hydrodynamic energy at the downstream. It might affect the chemical sorption process and allow the particulate organic carbon to accumulate at the bottom of the water column. Thus, fine sediment maybe playing dominant role in the content of TOC in surficial sediment at Sungai Pinang.Keywords: total organic carbon, mean size sediment, surficial sediments, Sungai Pinang Abstrak Kandungan jumlah karbon organik (TOC) dan purata saiz sedimen di dalam 24 sampel sedimen permukaan telah ditentukan. Dari hasil kajian ini, kepekatan TOC (5.33%) didapati tinggi berhampiran dengan kawasan perumahan di Sungai Pinang. Di kawasan hilir sungai tersebut mempunyai kepekatan TOC yang lebih tinggi (1.05% -5.33%) manakala di kawasan hulu sungai mempunyai kepekatan yang rendah dalam permukaan sedimen (0.36% -0.78%). Kemungkinan punca utama untuk pencemaran TOC di bahagian hilir sungai adalah dari aktiviti antropogenik seperti sisa buangan daripada bandar, aktiviti perindustrian dan aktiviti bot. Selain itu, purata saiz partikel kemungkinan adalah faktor penting menpergaruhi kandungan TOC dalam sedimen permukaan di Sungai Pinang. Ini kerana taburan purata saiz partikel mempunyai corak yang sama dengan TOC. Tambahan pula, hubungan korelasi antara TOC dan purata saiz partikel didapati tinggi dalam sedimen permukaan, iaitu r = 0.67 disebabkan saiz partikel yang halus memperolehi kapasiti pengikatan yang luas untuk penyerapan karbon organik. Selain itu, sedimen yang halus berkemungkinan menunjukkan tenaga hidrodinamik yang perlahan di bahagian hiliran. Hal ini berkemungkinan mempengaruhi proses penyerapan dan pengumpulan zarah karbon organik di bahagian bawah turus air. Oleh itu, sedimen yang halus berkemungkinan besar memainkan peranan yang paling dominan kepada kandungan TOC yang dalam sedimen permukaan di Sungai Pinang.Kata kunci: jumlah karbon organik, purata saiz sedimen, sedimen permukaan, Sungai...

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An Updated Review on Quantitative and Qualitative Analysis of Water Pollution in West Flowing Tapi River of Gujarat, India

Gaur¹

2017

Environmental Pollution

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Variations in total organic carbon and grain size distribution in ephemeral river sediments in western India

Cited by 27 publications

References 20 publications

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Physical and chemical properties of recently deposited sediments in the reservoir of the Borçka Dam in Artvin, Turkey

Determination of Total Organic Carbon Concentration in Surficial Sediments of Sungai Pinang, Penang, Malaysia

An Updated Review on Quantitative and Qualitative Analysis of Water Pollution in West Flowing Tapi River of Gujarat, India

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