River toxicity assessment using molecular biosensors: Heavy metal contamination in the Turag-Balu-Buriganga river systems, Dhaka, Bangladesh

Rampley, Cordelia P. N.; Whitehead, Paul; Softley, L.; Hossain, Md Anowar; Jin, Li; David, José; Shawal, Shammi; Das, Partho; Thompson, Ian P.; Huang, Wei E.; Peters, Rebecca; Holdship, P.; Hope, Robert; Alabaster, Graham

doi:10.1016/j.scitotenv.2019.134760

Cited by 48 publications

(29 citation statements)

References 15 publications

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“…Higher concentrations of toxic metals were found in sediments (Table 3) and fish samples from the river [94,95]. Toxicity assessment of river water based on metal concentrations (figure S4) found that the river became toxic and very much harmful for human health and living biota [19].…”

Section: Buriganga River Pollutionmentioning

confidence: 99%

“…Based on the available data it is confirmed that pollution events have occurred in that area and contaminates the river continuously. The pollutant analysis data of Tejgoan-Rampura Khal, Tongi Khal and Norai Khal which ultimately fallen down into Balu River showed that these channels transported high load of pollutants into Balu River [19]. Pollutant concentrations in sediments (Table 3) were several fold higher than water and higher then USEPA recommended standard concentrations [12].…”

Section: Balu River Pollutionmentioning

confidence: 99%

“…Buriganga is called a dead river because of the quality of water. During summer season, the physical appearance of the water is dark black like burned Mobil [18,19]. Karnaphuli River is affected severely by waste materials of Chittagong city.…”

Section: Introductionmentioning

confidence: 99%

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Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Uddin

Jeong

2021

Heliyon

116

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River water is very much important for domestic, agriculture and industrial use in Bangladesh which is in critical condition from long time based on research data. During last 40 years, extreme pollution events occurred in peripheral rivers surrounding Dhaka city and Karnaphuli River in Chittagong city. Present data showed that other urban rivers are also in critical condition especially Korotoa, Teesta, Rupsha, Pashur and Padma. The pollutants flowing with water made a severe pollution in downstream areas of rivers. Metals concentrations in river water was found to be higher in dry season. Dissolve oxygen (DO) was nearly zero in Buriganga River and several points in Turag, Balu, Sitalakhya and Karnaphuli River. NO 3 - , NO 2 - and PO 4 3- pollution occurred in different rivers. Zn, Cu, Fe, Pb, Cd, Ni, Mn, As and Cr concentration was above drinking water standard in most of the river and some metals was even above irrigation standard in water from several rivers. Sediment data showed very much higher metal concentrations in most of the rivers especially peripheral rivers in Dhaka and Karnaphuli, Korotoa, Teesta, Rupsha and Meghna River. Metal concentrations in sediment was above US EPA threshold value in most of the rivers. Metal concentrations in fish and agricultural crops showed that bioaccumulations of metals had occurred. The concentration of metals showed the trend like: water

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Section: Buriganga River Pollutionmentioning

confidence: 99%

Section: Balu River Pollutionmentioning

confidence: 99%

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Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Uddin

Jeong

2021

Heliyon

116

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“…In Bangladesh, surface waters, especially rivers have also been contaminated with trace metals due to the indiscriminate disposal of industrial effluents. There are over 30,000 factories in and around the capital city of Dhaka (Rampley et al 2020). These factories are continuously discharging pollutants in the form of organics, heavy metals, and pathogens, etc.…”

Section: Introductionmentioning

confidence: 99%

“…They attributed the elevated concentrations of these metals to industrial activities and urban sewage systems. Rampley et al (2020) assessed the rivers (Turag, Tongi, Balu, and Buriganga) in and around Dhaka and observed high concentrations of aluminum, cadmium, chromium, iron, zinc, lithium, selenium, and nickel. Heavy metals discharged into aquatic habitats are likely to elevate the level of heavy metal concentrations in microorganisms, flora, and fauna residing in that habitat; these bioaccumulated heavy metals may then come along the food chain (Bhuiyan et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots

Jahangiri

Moutushi

Moniruzzaman

et al. 2021

Water Practice and Technology

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Dried ground roots of water hyacinth (Eichhornia crassipes) were used for removal of Pb(II) from aqueous solution. Batch adsorption experiments were conducted with the dried roots (0.1 g dry weight) using 100 mg/L of Pb(II) aqueous solution adjusted at pH 5.0. Equilibrium was obtained in 90 min with a 92% removal of Pb(II). The effect of contact time, pH, adsorbent dosage, initial metal ion concentration on the adsorption of Pb(II) were also studied. Kinetic studies indicated that the adsorption of Pb(II) followed the pseudo-second-order model with a reaction rate constant (k) of 0.0127 mg/(g.min). Kinetics data conforming to the pseudo-second-order model suggest that chemisorption was the rate-limiting step in the adsorption process. The adsorption data were found to fit best into the Langmuir model (R2 = 0.986). The maximum adsorption capacity was found to be ∼50 mg Pb(II) per g of dried roots. To investigate the feasibility of using the water hyacinth roots in a more realistic situation, wastewaters collected from various sources were also tested with the biosorbent. Significant removal of Pb(II) (∼88% to ∼100%) was observed from the wastewaters at pH 5.0. High adsorption capacity, rapid kinetics, and its low cost make water hyacinth dried roots a good candidate for the removal of Pb(II) from wastewaters.

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Biosensors for the Detection of Selenium in Environment

Kaur

Monga

Singh

2021

Selenium Contamination in Water

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River toxicity assessment using molecular biosensors: Heavy metal contamination in the Turag-Balu-Buriganga river systems, Dhaka, Bangladesh

Cited by 48 publications

References 15 publications

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Urban river pollution in Bangladesh during last 40 years: potential public health and ecological risk, present policy, and future prospects toward smart water management

Removal of lead from aqueous solutions and wastewaters using water hyacinth (Eichhornia crassipes) roots

Biosensors for the Detection of Selenium in Environment

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