A Novel Water Pretreatment Approach for Turbidity Removal Using Date Seeds and Pollen Sheath

Al-Sameraiy, Mukheled

doi:10.4236/jwarp.2012.42010

Cited by 29 publications

(17 citation statements)

References 23 publications

(25 reference statements)

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“…Investigated optimum dose for (DS and A) coagulants as a function of residual turbidity according to WHO turbidity standard at high synthetic turbid water(Al-Sameraiy 2012) …”

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confidence: 99%

A new approach using coagulation rate constant for evaluation of turbidity removal

Al-Sameraiy

2015

Appl Water Sci

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Coagulation-flocculation-sedimentation processes for treating three levels of bentonite synthetic turbid water using date seeds (DS) and alum (A) coagulants were investigated in the previous research work. In the current research, the same experimental results were used to adopt a new approach on a basis of using coagulation rate constant as an investigating parameter to identify optimum doses of these coagulants. Moreover, the performance of these coagulants to meet (WHO) turbidity standard was assessed by introducing a new evaluating criterion in terms of critical coagulation rate constant (k c). Coagulation rate constants (k 2) were mathematically calculated in second order form of coagulation process for each coagulant. The maximum (k 2) values corresponded to doses, which were obviously to be considered as optimum doses. The proposed criterion to assess the performance of coagulation process of these coagulants was based on the mathematical representation of (WHO) turbidity guidelines in second order form of coagulation process stated that (k 2) for each coagulant should be C (k c) for each level of synthetic turbid water. For all tested turbid water, DS coagulant could not satisfy it. While, A coagulant could satisfy it. The results obtained in the present research are exactly in agreement with the previous published results in terms of finding optimum doses for each coagulant and assessing their performances. On the whole, it is recommended considering coagulation rate constant to be a new approach as an indicator for investigating optimum doses and critical coagulation rate constant to be a new evaluating criterion to assess coagulants' performance.

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“…Investigated optimum dose for (DS and A) coagulants as a function of residual turbidity according to WHO turbidity standard at high synthetic turbid water(Al-Sameraiy 2012) …”

mentioning

confidence: 99%

A new approach using coagulation rate constant for evaluation of turbidity removal

Al-Sameraiy

2015

Appl Water Sci

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“…Environment-friendly coagulants include nirmali seed and maize [293], cactus latifaria [294] and many others [295]. Mukheled Al-Sameraiy [296] reported a novel approach to pretreatment for turbidity removal utilizing date seeds and pollen sheathes. The method consisted of two approaches: coagulation/flocculation and sedimentation processes at a certain mixing speed, mixing time and settling time.…”

Section: Ecological Impacts Of Ro Pretreatmentmentioning

confidence: 99%

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

2019

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Recent progress in reverse osmosis (RO) technology is not limited to RO membrane materials, module designs and RO process optimization. It involves prior feed treatment which directly impacts RO system performance. The ongoing challenges of membrane fouling in RO membranes can be addressed by increasing the operational efficiency through the use of correct pretreatment options which can mitigate organic and inorganic fouling by selectively rejecting contaminants prior to reaching the RO unit. Highly polluted water resources have put critical stress on the existing conventional pretreatment techniques, whereby membrane pretreatment has emerged as a promising alternative. This paper provides an overview of the development and current trends in conventional and nonconventional RO pretreatment techniques whereby the techniques are critically reviewed to 2 inform readers of potential improvements in such areas. This paper addresses the major drawbacks of conventional pretreatment methods which have necessitated the use of membrane pretreatment techniques. Special attention is given to microfiltration, ultrafiltration and nanofiltration methods and their development in terms of advanced membrane materials based on ceramics and self-cleaning membranes. Studies from laboratory scale standalone systems, pilot scale and large scale integrated systems for performance, cost and ecological analysis have been reviewed to familiarize readers with the many factors which need to be analyzed for selection of the appropriate pretreatment method(s). The critical review in this paper will help researchers focus more on the areas which have room for further development for cost-effective and advanced RO pretreatment techniques.

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“…Coagulation needs flocculation process to work efficiently. Coagulation by itself does not help much when the addition of coagulant may increase the insoluble compounds in treated sample, thus flocculation step is needed by allowing slow mixing key to obtain optimum performance [8]. In this study, the coagulant dosage and pH are selected to be the manipulated variables due to its dominance effect, while the temperature, jar test mixing speed, and settling time are controlled on their respective working conditions.…”

Section: Bod5/codmentioning

confidence: 99%

Dosage and pH optimization on stabilized landfill leachate via coagulation-flocculation process

et al. 2018

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Treatment on the generated landfill leachate is crucial as it can cause serious toxicological effects and environmental hazards, particularly when the unfavorable contaminants are left accumulated for a long period of time. The purpose of this study was to determine the optimum coagulant dosage of polyaluminium chloride (PAC) in selected dosage ranges (2250-4500 mg/L) and to analyse the ideal pH of leachate sample (pH 3-10). PAC was tested on stabilized leachate taken from Simpang Renggam Landfill Site (SRLS), by investigating the percentage removals of five significant parameters, which were suspended solids, chemical oxygen demand (COD), ammonia, and heavy metals (iron (Fe) and chromium (Cr)). The removal efficiency was determined by a series of experiments using jar test. From the obtained results, it was found that 3750 mg/L and pH 7 were the optimum conditions for PAC dosage and sample pH, respectively. The conventional optimization test showed satisfactory results for suspended solids, COD, Fe, and Cr at 95%, 53%, 97%, and 79% respectively, but had low removal on ammonia at 18%. It can be concluded that the coagulation-flocculation process has the potential to be applied as a primary treatment for stabilized landfill leachate in Malaysia.

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A Novel Water Pretreatment Approach for Turbidity Removal Using Date Seeds and Pollen Sheath

Cited by 29 publications

References 23 publications

A new approach using coagulation rate constant for evaluation of turbidity removal

A new approach using coagulation rate constant for evaluation of turbidity removal

Reverse osmosis pretreatment technologies and future trends: A comprehensive review

Dosage and pH optimization on stabilized landfill leachate via coagulation-flocculation process

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