Toxic Pollution in River Water and Bacterial Remediation: An Overview

Raghav, Nupur; Shrivastava, J. N.

doi:10.20546/ijcmas.2016.504.030

Cited by 9 publications

(4 citation statements)

References 61 publications

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“…The environmental fate of pesticides depends on the physical and chemical properties of the pesticide as well as environmental conditions [6]. The accumulation of various kinds of pollutants and nutrients through sewage, industrial effluents and agricultural run-off into the water bodies bring about series of changes in the physicochemical characteristics of water, which have been the subject matter of several investigations [7]. In Africa, the inhabitants of the rural areas heavily rely on surface water resources for drinking and domestic purposes.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment of Pesticide Residues in Water Samples From Nwaniba River, Akwa Ibom State, Nigeria

Moses¹,

Akpan²,

Shaibu³

2023

JCSN

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Ecological risk assessment of pesticide residues is not only germane but critical in view of their inherent health challenges and for informed decision-making process. This study was conducted to assess the levels of contamination of organochlorine pesticide residues in water from Nwaniba River in Uruan Local Government Area of Akwa Ibom State. The analysis was carried out using Gas Chromatography with electron capture detector (GC-ECD). The obtained results revealed the predominance of Dieldrin in the different samples of water analysed from Ufak Effiong in the Southern District (station I) and Akani Obio in Uruan Central District (station II) of Uruan. Pesticide levels were found to be significantly higher than the World Health Organization /Food and Agricultural Association (WHO/FAO) Maximum Residue Limits (MRL). The concentrations of organochlorine pesticides (OCPs) ranged from Below detection limit (BDL) - 2.37 × 10-1 ng/µL for water samples. Carcinogenic risk values for γ-BHC, delta-BHC, Dieldrin, Endosulfan I and Heptachlor epoxide in the water samples were found to be less than 1.0 × 10−5, thus posing no potentially serious cancer risk to consumers. The values of cancer risk obtained were lower (6.448 × 10- 11 and 7.208 × 10-11) than the established maximum limit. Hazard index (HI) values calculated for pesticide consumption through water by children and adults are all above unity, indicating that high toxic risks are associated with them. The HI values for children exposure are significantly lower compared to those of adults of Ufak Effiong and Akani Obio. This study reveals that the physicochemical parameters of water obtained from both stations were below the maximum permitted levels set by World Health Organization (WHO) and Nigerian Standard for Drinking Water Quality (NSDWQ). It also provides a baseline data and critical information to encourage effective monitory and management of the ecosystem.

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Section: Introductionmentioning

confidence: 99%

Risk Assessment of Pesticide Residues in Water Samples From Nwaniba River, Akwa Ibom State, Nigeria

Moses¹,

Akpan²,

Shaibu³

2023

JCSN

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“…Water pollution is an environmental issue of major concern worldwide. However, the extent and severity of water pollution is more prominent in developing countries (Raghav & Shrivastava, ; UNEP, ). Surface waters, in particular, are more vulnerable to pollution due to their easy accessibility for disposal of wastes and pollutants (Bu et al., ; Oki, ).…”

Section: Introductionmentioning

confidence: 99%

Spatial characteristics and influencing factors of river pollution in China

Wang

et al. 2019

Water Environment Research

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Based on recent water quality data collected from 763 monitoring sections nationwide, this study examined the concentration of major pollutants in China's major rivers. A spatial autocorrelation analysis confirmed that river pollution was spatially uneven and clustered. While pollution of surface water was a nationwide concern, most serious water pollution happened in the Huai, Hai, Yellow, and Liao river Basins in Northern China. The results of the spatial regression analysis showed that GDP per capita, surface water stock, population, and economic structure were all significantly correlated with surface water pollution, with population having strongest impact, followed by level of economic development. By investigating the common characteristics shared by the “hotspot” cities where serious water pollution occurred, this study recommended a regional or basin approach to assessing water quality and controlling river pollution that cuts across jurisdiction boundaries. While China has made considerable progress in improving water productivity, there is still enormous potential in water conservation. It is also imperative to restructure local economy and develop water‐efficient, less polluting industries and services. Practitioner points River pollution in China was spatially uneven and clustered. Most serious water pollution happened in the Huai, Hai, Yellow, and Liao river basins in Northern China. GDP per capita, surface water stock, population, and economic structure correlated with surface water pollution, with population having strongest impact. A regional or basin approach was recommended to assess water quality and controlling river pollution across jurisdiction boundaries. It is also imperative to restructure local economy and develop water‐efficient, less polluting industries and services.

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“… 10 , 11 Bioremediation, especially associated with microorganisms, used for the cleanup of contaminated waters and soils is receiving most attention because of its environmental friendly approach and its ability to completely mineralize toxic organic compounds. 12 , 13 It is also a cost-effective strategy. 14 , 15 Besides cost-effectiveness, it is a permanent solution, which may lead to complete mineralization of the pollutant.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous biodegradation of phenol and cyanide present in coke-oven effluent using immobilized Pseudomonas putida and Pseudomonas stutzeri

Singh

Arora

Sachan

2018

Brazilian Journal of Microbiology

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Discharge of coke-oven wastewater to the environment may cause severe contamination to it and also threaten the flora and fauna, including human beings. Hence before dumping it is necessary to treat this dangerous effluent in order to minimize the damage to the environment. Conventional technologies have inherent drawbacks however, biological treatment is an advantageous alternative method. In the present study, bacteria were isolated from the soil collected from the sites contaminated by coke-oven effluent rich in phenol and cyanide. Nucleotides sequence alignment and phylogenetic analysis showed the identity of the selected phenol and cyanide degrading isolates NAUN-16 and NAUN-1B as Pseudomonas putida and Pseudomonas stutzeri, respectively. These two isolates tolerated phenol up to 1800 mg L−1 and cyanide up to 340 mg L−1 concentrations. The isolates were immobilized on activated charcoal, saw dust and fly ash. The effluent was passed through the column packed with immobilized cells with a flow rate of 5 mL min−1. The isolates showed degradation of phenol up to 80.5% and cyanide up to 80.6% and also had the ability to reduce biological oxygen demand, chemical oxygen demand and lower the pH of effluent from alkaline to near neutral. The study suggests the utilization of such potential bacterial strains in treating industrial effluent containing phenol and cyanide, before being thrown in any ecosystem.

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Toxic Pollution in River Water and Bacterial Remediation: An Overview

Cited by 9 publications

References 61 publications

Risk Assessment of Pesticide Residues in Water Samples From Nwaniba River, Akwa Ibom State, Nigeria

Risk Assessment of Pesticide Residues in Water Samples From Nwaniba River, Akwa Ibom State, Nigeria

Spatial characteristics and influencing factors of river pollution in China

Simultaneous biodegradation of phenol and cyanide present in coke-oven effluent using immobilized Pseudomonas putida and Pseudomonas stutzeri

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