Comparison of poly ferric chloride and poly titanium tetrachloride in coagulation and flocculation process for paper and cardboard wastewater treatment

Mahmoudabadi, Tahereh Zarei; Ehrampoush, Mohammad Hassan; Talebi, Parvaneh; Fouladi-Fard, Reza; Eslami, Hadi

doi:10.1007/s11356-021-12675-6

Cited by 13 publications

(3 citation statements)

References 41 publications

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“…Neutral or alkaline conditions of solution showed higher removal efficiencies than acidic conditions. It also depicted a direct relation between pH and turbidity removal efficiency of powdered neem seeds [34].…”

Section: Fig 6 Effect Of Ph On Turbidity Removalmentioning

confidence: 83%

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Turbidity removal through the application of powdered azadirachta indica (neem) seeds

Khan

Imran

Ullman

et al. 2023

Mehran Univ. res. j. eng. technol.

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Various natural products used for water treatment are becoming more popular due to their general safety, eco-friendly sludge production, ease of degradation, cost-effectiveness, and local availability. This research assessed the efficiency of powdered neem (Azadirachta indica) seeds in removing turbidity from the water. Batch experiments determined the optimum coagulant dose, pH level, mixing time, and mixing speed to reduce turbidity from kaolin-based synthetic turbid water. Powdered neem seeds with a pore size of about 0.45 mm were prepared and used in water treatment under optimum conditions. Results showed that a coagulant dose of 3 g of neem seeds/L, 13.2 pH level, 60 mins mixing time at 80 rpm mixing speed could reduce turbidity levels to 35 NTU from 250 NTU (86% removal). Findings suggest that powdered neem seeds can be a potential substitute for conventional chemical coagulants for drinking water treatment.

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Section: Fig 6 Effect Of Ph On Turbidity Removalmentioning

confidence: 83%

“…As a result, 60 min was chosen as the optimum mixing time. This decrease in removal efficiencies could be due to the re-suspension of colloidal particles after enough floc formation [34]. At optimum mixing time, large floc generation was achieved and began to settle, so the efficiency plateaued (Fig.…”

Section: Mixing Time Effectsmentioning

confidence: 99%

Turbidity removal through the application of powdered azadirachta indica (neem) seeds

Khan

Imran

Ullman

et al. 2023

Mehran Univ. res. j. eng. technol.

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“…Access to safe and sufficient water is one of the criteria for development, health, and well-being in any society 1,2 . Water quality is affected by water supply sources, treatment systems, water distribution networks, and etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Corrosion and Scaling Potential in Drinking Water in Rafsanjan, Iran

Eslami¹,

Heidari²,

Salari³

et al. 2022

JEHSD

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Introduction: Corrosion and scaling are important factors affecting drinking water quality, causing health and economic problems. This study aimed to investigate the indicators of corrosion and scaling in Rafsanjan drinking water. Materials and Methods: The present descriptive cross-sectional study was conducted in winter 2018 and spring 2019 in Rafsanjan. The 56 samples were randomly taken from the drinking water distribution and transmission networks. Physicochemical parameters, such as pH, temperature, total dissolved solids (TDS), total hardness (TH), calcium hardness (CH), electrical conductivity (EC), and alkalinity were measured. Finally, corrosion and scaling indices, including langelier index (LI), ryznar index (RI), aggressiveness index (AI), and Puckorius index (PI) were calculated and analyzed. Results: The mean temperature, pH, CH, TH, TDS, alkalinity, and EC were 17.79 ± 0.80 °C, 8.08 ± 0.11, 56.34 ± 2.72 mg/L.CaCO3, 140.86 ± 6.81 mg/L.CaCO3, 530 ± 110 mg/L, 181.21 ± 13.65 mg/L, and 840 ± 180 µs/cm, respectively. The mean corrosion and scaling indices, including LI = 0.18 ± 0.12, RI = 7.72 ± 0.14, AI = 12.09 ± 0.11, and finally PI = 7.96 ± 0.10 were obtained. Conclusion: Based on the obtained data, drinking water in the transmission and distribution network of Rafsanjan has scaling properties. Water scaling and deposition causes problems, such as blockage of water transmission and distribution pipes, reduction of flow rate and increase of pressure drop in the network, and finally increase of water facilities operation costs. Therefore, measures should be considered to control the scaling of water in this region.

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Exposure risks to SARS-CoV-2 (COVID-19) in wastewater treatment plants: a review

Zarei Mahmoudabadi,

Pasdar,

Eslami

2024

Sustain. Water Resour. Manag.

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Comparison of poly ferric chloride and poly titanium tetrachloride in coagulation and flocculation process for paper and cardboard wastewater treatment

Cited by 13 publications

References 41 publications

Turbidity removal through the application of powdered azadirachta indica (neem) seeds

Turbidity removal through the application of powdered azadirachta indica (neem) seeds

Investigation of Corrosion and Scaling Potential in Drinking Water in Rafsanjan, Iran

Exposure risks to SARS-CoV-2 (COVID-19) in wastewater treatment plants: a review

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