Application of polypyrrole coated on perlite zeolite for removal of nitrate from wood and paper factories wastewater

Naghizadeh, Ali; Etemadinia, Tahereh; Rezaei, Omolbanin Motamed; Mehrpour, Omid; Mousavi, Seyyed Jalal; Sadeghi, Mahdi

doi:10.5004/dwt.2018.22746

Cited by 4 publications

(2 citation statements)

References 41 publications

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“…Today, many individuals in urban environments prefer bottled water to the tap water supplied by urban water distribution networks due to the natural quality, better taste, and higher quality of bottled water [6]. According to the literature, the development of technology and industry, population growth, wastewater and solid waste production, and growing use of pesticides have led to the entry of organic compounds and heavy metals into water and water pollution [7][8][9][10][11][12][13]. As such, the continuous monitoring of the quality of bottled water products is of utmost importance .…”

Section: Introductionmentioning

confidence: 99%

Chemical Quality of the Leading Bottled Water Brands Distributed in Gorgan, Iran

Sadeghi

Raeisi

Ghahrechi

et al. 2019

J. Hum. Environ. Health Promot

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Use of bottled water is a viable option in the areas where high-quality drinking water and water purification facilities are not available [3].According to statistics, the average annual consumption of bottled water has increase by 7%. Although the main consumers of these products are currently European countries, the consumption rate has also risen in Asia and the Pacific more rapidly, with the rate estimated at approximately 15% [4].In developed countries, the most important reason for the tendency toward the use of bottled water is that individuals Journal of Human, Environment, and Health PromotionJournal homepage: www.zums.ac.ir/jhehpBackground: With the growing use of bottled water, the continuous research and monitoring of the quality of these products are crucial. The present study aimed to assess the chemical quality of the bottled water distributed in Gorgan, Iran. Methods: This cross-sectional, descriptive-analytical study was conducted on the samples of bottled water distributed in Gorgan city. Sampling was performed during four months (one sample of each brand obtained every month; total: 36). The chemical quality of the samples was measured using standard methods. Results: The mean concentrations of nitrate, fluoride, and iron and mean pH of the samples were 12.92 ± 11.05, 0.33 ± 0.12, and 0.64 ± 2.9 mg/l and 6.89 ± 0.39, respectively. Only the physicochemical parameters of pH and iron were significantly higher than the standard values, and the mean levels of the chemical factors were significantly lower than the standard values (P < 0.05). Conclusion: Consumers expect bottled water to have higher quality as they perceive the product to be a healthier choice than the water supplied by urban distribution networks. High levels of some chemical parameters could adversely affect the health of consumers, especially vulnerable populations, which should be taken into consideration by custodians and authorities.

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Section: Introductionmentioning

confidence: 99%

Chemical Quality of the Leading Bottled Water Brands Distributed in Gorgan, Iran

Sadeghi

Raeisi

Ghahrechi

et al. 2019

J. Hum. Environ. Health Promot

Self Cite

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“…Numerous studies have been conducted on biological treatment of domestic and industrial wastewaters and liquid pollutant by using rotating biological contactor (RBC) systems and new methods [7][8][9][10][11][12][13]. However, biological treatment of saline wastewater in RBC systems has not been yet studied extensively [14].…”

Section: Introductionmentioning

confidence: 99%

Improving the efficiency of saline wastewater treatment plant through adaptation of halophilic microorganisms

Sadeghi¹,

Kor²,

Keramat³

et al. 2019

Desalination and Water Treatment

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In the urban wastewater treatment plant of Bandar Torkaman, total input of solvent solids is about 8-9 g L-1 and the electrical conductivity is 14,600 µs cm-1. High salt concentrations cause some problems in biological treatment process. Therefore, this study was designed to improve the effluent of saline wastewater treatment plant in Bandar Torkaman by adaptation of halophilic microorganisms. We designed a pilot plant considering the size of the current wastewater treatment plant and installed an RBC system. Effective parameters were evaluated and halophilic microorganisms in both plants were cultured and identified according to the standard methods in both the treatment plant and the pilot plant. The average electrical conductivity of sewage was 12,000 µs cm-1. We found Salinibacter and Adhaeribacter species were able to grow in high salt concen trations. Considering the results of the present study, we conclude that the attached growth systems have more efficiency for saline wastewater treatment than the suspended purification systems. In addition, pH (R² = 0.344) and rotational velocity (R² = 0.094) had the least effect on the efficiency. Changing the system of aerated lagoon and suspended growth to attached growth increases the growth of halophilic microorganisms, thus increasing the efficiency of organic matter removal in wastewater treatment plants.

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Prevention of deactivation of HZSM-5 by mixing with NaZSM-5 in catalytic reaction of methylcyclohexane

et al. 2020

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Application of polypyrrole coated on perlite zeolite for removal of nitrate from wood and paper factories wastewater

Cited by 4 publications

References 41 publications

Chemical Quality of the Leading Bottled Water Brands Distributed in Gorgan, Iran

Chemical Quality of the Leading Bottled Water Brands Distributed in Gorgan, Iran

Improving the efficiency of saline wastewater treatment plant through adaptation of halophilic microorganisms

Prevention of deactivation of HZSM-5 by mixing with NaZSM-5 in catalytic reaction of methylcyclohexane

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