Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments under laboratory conditions

Huang, Yuanxing; Zhang, Daofang; Xu, Zhaoyi; Yuan, Shijue; Li, Yuanheng; Wang, Lian

doi:10.1515/aep-2017-0014

Cited by 43 publications

(33 citation statements)

References 30 publications

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“…Haiyan et al (2013) reported that at temperature range of 4-25 • C, there is a weak temperature-dependence of metal distributed. However in this study high temperature ranges of 31-32.4 • C were recorded (Table 4), which fell between the temperature ranges of 15−35 • C reported by Yuanxing et al (2017), who observed that distribution rates of ions such Zn, Cu, Pb, Cr, and Cd were greater in high temperatures than at low temperature. pH Different studies have shown that heavy metals are generally associated with contaminated water (Borma, Ehrlich & Barbosa, 2003;Lors, Tiffreau & Laboudigue, 2004).…”

Section: Temperaturesupporting

confidence: 72%

“…Most of these anions serves as ligands for complex formation with metals and thus could be reason for the poor relationship. Yuanxing et al (2017) in a controlled experiments reported that at low-pH (pH = 4), the distribution of some metals especially Zn in solution was much larger than at high-pH or mid-pH. The pH recorded in our study was 5.2 to 6.2, which could possibly be the reason for general low distribution hence suggesting low pH-dependence.…”

Section: Temperaturecontrasting

confidence: 43%

“…pH Different studies have shown that heavy metals are generally associated with contaminated water (Borma, Ehrlich & Barbosa, 2003;Lors, Tiffreau & Laboudigue, 2004). Yuanxing et al (2017) explains that when pH decreases (<5), the competition between H + and the dissolved metals for ligands (e.g., OH − , CO 3 2−, SO 4 2−, Cl − , S 2 − and phosphates) becomes more and more significant thus increasing the mobility of heavy metals (Borma, Ehrlich & Barbosa, 2003). This explanation had been supported by many researchers (Butler, 2009;Watmough, Eimers & Dillon, 2007;Pérez-Esteban et al, 2013;Yang et al, 2006;Jing, He & Yang, 2007).…”

Section: Temperaturementioning

confidence: 83%

“…This explanation had been supported by many researchers (Butler, 2009;Watmough, Eimers & Dillon, 2007;Pérez-Esteban et al, 2013;Yang et al, 2006;Jing, He & Yang, 2007). However, the low pH instances are very rare in natural environment (Yuanxing et al, 2017) where pH values cannot be easily controlled. A critical look at Figs.…”

Section: Temperaturementioning

confidence: 86%

“…Generally, for most metals decreasing pH causes an increase in metal solubility in many forms except metals present in the form of oxyanions or amphoteric species. Studies have shown that metal solubility correlated positively with pH (Enyoh, Verla & Egejuru, 2018) and becomes limited at pH range of 5.5 to 6.0 while more distributed at temperature range of 15-35 • C (Pérez-Esteban et al, 2013;Yang et al, 2006;Jing, He & Yang, 2007;Yuanxing et al, 2017). Therefore, the distribution, solubility and toxicity of ions in water can be controlled by controlling the physicochemical properties of the water.…”

Section: Introductionmentioning

confidence: 99%

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Finding a relationship between physicochemical characteristics and ionic composition of River Nworie, Imo State, Nigeria

Verla

Enyoh

2020

PeerJ Analytical Chemistry

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Water has been described as a universal solvent, and this is perhaps the strength behind its many uses. Despite this unique property, anthropogenic activities along its course and natural factors often determine the composition of water. In the current research, the portion of River Nworie having past Owerri town was sampled in the dry season 2017 to determine its ionic composition at predestinated points and to relate such properties to its physicochemical characteristics. Studies relating physicochemical properties and dissolved toxic ions in water could develop a body of knowledge that could enable detection and quantification of potential risk of ions such as heavy metals from natural water to aquatic ecosystem, animal and human health without actually involving aquatic organism, animal and human. Clean sterile plastic bottles were used for collecting surface water. A total of 30 sub-samples from five points at 300 m apart were sampled in the morning. Physicochemical properties were determined using standard methods and ionic composition of water was determined according methods of APHA. Results revealed that Ca2+ had a mean 23.60 ± 0.67 mg/l and was the highest while K+ with a mean 0.72 ± 0.30 was the least amongst major cations. Amongst the major anions Cl− had mean of 31.58 ± 4.47 mg/l while mean of PO43− was 1.42 ± 0.13 mg/l. The ionic balance calculate as % balance error showed high values for all sampling sites ranging from 30 to 39.42% indicating that there is massive input from anthropogenic activities. The computed relationships for selected heavy metals, cations and anions revealed that R2 values were ranging between ± 0.012 to 1 indicating some form of relationship existing. The water pH weakly correlated with dissolved cations and anions while moderate with pH only, due to the pH level (5.2–6.2). The cations and anions were more influenced by the water temperature than the heavy metals. Therefore, high temperature ranges of 31–32.4 °C will favour more dissolution of cations and anions in natural water. Cations showed stronger relationship with EC while only heavy metals showed no relationship with DO (Dissolved oxygen). Dissolved oxygen relationship with cations and anions was in the order; K+ > Mg2+ > Ca2+ > Na+ while anions was SO42− > NO3− > Cl− > PO43−, respectively. Information here could be used to predict the effects of using this water for various purposes including water for agricultural purposes, in the management of ion polluted waters, and also to inform on the mitigation process to be taken.

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Section: Temperaturesupporting

confidence: 72%

Section: Temperaturecontrasting

confidence: 43%

Section: Temperaturementioning

confidence: 83%

Section: Temperaturementioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Finding a relationship between physicochemical characteristics and ionic composition of River Nworie, Imo State, Nigeria

Verla

Enyoh

2020

PeerJ Analytical Chemistry

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Laboratory and Field‐Based Assessment of the Effects of Sediment Capping Materials on Zinc Flux, Bioavailability, and Toxicity

Cervi

Thiamkeelakul

Hudson

et al. 2019

Enviro Toxic and Chemistry

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A former mining site has been the subject of extensive remediation and restoration, with a significant focus on disconnecting mine spoils from groundwater and managing the quantity and quality of runoff. A remaining task is ensuring concentrations of zinc (Zn) in the stream outflow of a pit lake are reduced below water quality standards. The efficacy of multiple capping materials for decreasing Zn dissolution from sediments was conducted under natural and reasonable worstcase conditions (pH = 5.5). Capping materials included AquaBlok™, limestone, and limestone-bone char. Field exposures were conducted in limnocorrals that isolated overlying water columns above the sediment and capping treatments. Simultaneous in situ and ex situ toxicity tests were conducted using Daphnia magna, Hyalella azteca, and Chironomus dilutus. In situ caged organisms were protected from temperature shock (warm epilimnetic waters) by deploying within a Toxicity Assessment Container System (TACS). Organisms were exposed to surficial sediments, caps, and hypolimnetic overlying waters for 4 d. Ex situ testing was conducted in core tube mesocosms containing sediments and caps at similar temperatures (15-19°C). Results demonstrated the usefulness of TACS deployment in stratified lake systems. There were no differences in responses between treatments involving sediment capping materials in both in situ and ex situ tests. The lack of differences was likely due to dissolved Zn in surface water being below the hardness-adjusted threshold effects levels (164 μg L -1 ). This fieldand laboratory-based weight-of-evidence study provided site-specific data to support the selection of an effective remedy, with reduced uncertainty compared to laboratory and chemistry-only approaches. Environ Toxicol Chem 2020;39:240-249. © 201939:240-249. © SETAC . 2018. Enhancement of active thin-layer capping with natural zeolite to simultaneously inhibit nutrient and heavy metal release from sediments. Ecol Eng 119:64-72. Zhuang Y, Allen HE, Fu G. 1994. Effect of aeration of sediment on cadmium binding. Environ Toxicol Chem 13:717-724. wileyonlinelibrary.com/ETC © 2019 SETAC Laboratory and field assessment of sediment capping on Zn flux-Environmental Toxicology and Chemistry , 2020;39:240-249

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Physical and biological controls on fine sediment transport and storage in rivers

et al. 2018

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Excess fine sediment, comprising particles <2 mm in diameter, is a major cause of ecological degradation in rivers. The erosion of fine sediment from terrestrial or aquatic sources, its delivery to the river, and its storage and transport in the fluvial environment are controlled by a complex interplay of physical, biological, and anthropogenic factors. While the physical controls exerted on fine sediment dynamics are relatively well‐documented, the role of biological processes and their interactions with hydraulic and physicochemical phenomena has been largely overlooked. The activities of biota, from primary producers to predators, exert strong controls on fine sediment deposition, infiltration, and resuspension. For example, extracellular polymeric substances associated with biofilms increase deposition and decrease resuspension. In lower energy rivers, aquatic macrophyte growth and senescence are intimately linked to sediment retention and loss, whereas riparian trees are dominant ecosystem engineers in high energy systems. Fish and invertebrates also have profound effects on fine sediment dynamics through activities that drive both particle deposition and erosion depending on species composition and abiotic conditions. The functional traits of species present will determine not only these biotic effects but also the responses of river ecosystems to excess fine sediment. We discuss which traits are involved and put them into context with spatial processes that occur throughout the river network. While strides towards better understanding of the impacts of excess fine sediment have been made, further progress to identify the most effective management approaches is urgently required through close communication between authorities and scientists. This article is categorized under: Water and Life > Nature of Freshwater Ecosystems Water and Life > Stresses and Pressures on Ecosystems Science of Water > Water Quality

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Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments under laboratory conditions

Cited by 43 publications

References 30 publications

Finding a relationship between physicochemical characteristics and ionic composition of River Nworie, Imo State, Nigeria

Finding a relationship between physicochemical characteristics and ionic composition of River Nworie, Imo State, Nigeria

Laboratory and Field‐Based Assessment of the Effects of Sediment Capping Materials on Zinc Flux, Bioavailability, and Toxicity

Physical and biological controls on fine sediment transport and storage in rivers

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