Recent advances in assessment on clear water, soil and air

Ashraf, Muhammad Aqeel; Hanfiah, Marlia Mohd

doi:10.1007/s11356-017-9267-z

Cited by 26 publications

(8 citation statements)

References 5 publications

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“…Concentrations of heavy metals in water are increased due to wastes of industrial, mining and human activities, and construction of siding and motor vehicles. In the aqueous systems, metals mobility and non-biodegradable are the most present and have the tendency to gather in living tissues, which may eventually lead to disorders and diseases [1][2][3]. One of the most important metals is Aluminum (Al 3+ ), which is known to be a vital element in the earth's layer.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Natural Extracted Precursor Date Palm Fibre-Based Activated Carbon for Aluminum Removal by RSM Optimization

et al. 2019

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The Powder-Activated Carbon (PAC) under optimum conditions from a new low-cost precursor Date Palm Fibre (DPF) biomass through a carbonization followed by KOH activation has been synthesized by response surface methodology (RSM) combined with central composite design (CCD). The special effects of activation temperature, time, and impregnation ratio on bio-PAC Aluminum (Al3+) removal and uptake capacity were examined. The optimum conditions for synthesized bio-PAC were found to be 99.4% and 9.94 mg·g−1 for Al3+ removal and uptake capacity, respectively at activation temperature 650 °C, activation time 1h and impregnation ratio 1. The optimum bio-PAC was characterized and analyzed using FESEM, FTIR, XRD, TGA, BET, and Zeta potential. RSM-CCD experimental design was used to optimize removal and uptake capacity of Al3+ on bio-PAC. Optimum conditions were found to be at bio-PAC dose of 5 mg with pH 9.48 and contact time of 117 min. Furthermore, at optimized conditions of Al3+ removal, kinetic, and isotherm models were investigated. The results reveal the feasibility of DPF biomass to be used as a potential and cost-effective precursor for synthesized bio-PAC for Al3+ removal.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Natural Extracted Precursor Date Palm Fibre-Based Activated Carbon for Aluminum Removal by RSM Optimization

et al. 2019

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“…Additionally, river plays an important role in assimilating municipal and industrial effluents as well as runoffs from agricultural land and the surrounding area in a watershed (Al-Badaii et al, 2013). The importance of water quality has become a serious matter especially when it involves the assessment of producing the biologically-accepted water system as a whole (Ashraf and Hanafiah, 2017;Muhammad Mansoor et al, 2018). The demand for safe and clean drinking water has increased by leaps and bounds in developing countries that have deteriorated environment (Gelover et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Water Quality Assessment of Tekala River, Selangor, Malaysia

Hanafiah¹,

Yussof²,

Hasan³

et al. 2018

Appl. Ecol. Env. Res.

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A study on water quality status of Tekala River, Selangor, Malaysia was conducted at two sampling times. A total of six sampling stations were selected along the river representing the upstream (S1 and S2), the middle stream (S3 and S4) and the downstream (S5 and S6) of the Tekala River. In this study, in-situ and ex-situ analyses were conducted to determine the quality of Tekala River. Physical, chemical and biological parameters included biochemical oxygen demand (BOD), chemical oxygen demand (SOD), ammoniacal nitrogen, total suspended solids (TSS), dissolved oxygen (DO), pH, temperature, total dissolved solid (TDS), salinity, conductivity, Escherichia coli, coliform and macroinvertebrate. According to the result obtained from this study, Tekala River is classified under Class I and Class II based on water quality index and National water quality standard. Two-way ANOVA showed a significant difference between parameters (ammoniacal nitrogen, BOD, pH, temperature, conductivity, DO and TDS) of sampling station. Significant difference was found between ammoniacal nitrogen, pH and temperature with sampling time. The correlation test revealed that there is relationship between Escherichia coli with ammoniacal nitrogen, temperature and DO. There is also relationship found between coliform with pH and BOD.

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“…In previous studies that were conducted in Malaysia for water quality, they found many organic and trace metals originated from the biofilm deposited in water supply network and caused changes in the test and odor of drinking water [34][35][36][37]. They collected river water used for drinking purpose and analyzed in the field and laboratory tests for identification and source of contamination.…”

Section: Vocs In Tap Water Samplesmentioning

confidence: 99%

Release of organic contaminants migrating from polyvinyl chloride polymeric into drinking water under three successive stagnant periods of time

Shaikh¹,

AlSuhaimi²,

Hanafiah³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tDrinking water is found contaminated with various volatile organic compounds (VOCs) at supply end. Chlorinated polyvinyl chloride (CPVC) and polyvinyl chloride (PVC) pipes used to supply drinking water may be the possible source of the contamination. In this study, leaching ability of VOCs from CPVC and PVC was tested under controlled experimental conditions and correlated with real water samples. For experimental design, nine polymeric plastics in Saudi Arabia were purchased locally and incubated with pure water for leaching study. A total of 58 tap water samples were collected from buildings and villas within the city of Madinah Al-Munawarrah and analyzed for the targeted compounds including benzene, -trichloropropane, phenol, benzyl chloride, 2-nitrophenol, 2,4-dichloropropane, and 2,4,6-trichlorophenol. Analytical results show that volatile and phenolic contaminants released by tested pipes increased significantly over incubation time. The quantification of the targeted compounds in Milli-Q water samples incubated in pipes in laboratoryscale experiment conformed that these contaminants are more likely to be migrated from PVC plastic pipes comprising tap water. The levels of some contaminants were above the limits stated by World Health Organization, while others were within the allowable levels. Their accumulation during longer contact time can potentially increase the exposure to harmful constituents in water and causes health problems. The results also indicated a correlation between the source of contamination and level of pollutants.

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Recent advances in assessment on clear water, soil and air

Cited by 26 publications

References 5 publications

Synthesis and Characterization of Natural Extracted Precursor Date Palm Fibre-Based Activated Carbon for Aluminum Removal by RSM Optimization

Synthesis and Characterization of Natural Extracted Precursor Date Palm Fibre-Based Activated Carbon for Aluminum Removal by RSM Optimization

Water Quality Assessment of Tekala River, Selangor, Malaysia

Release of organic contaminants migrating from polyvinyl chloride polymeric into drinking water under three successive stagnant periods of time

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