An appraisal of physicochemical parameters and some trace metals at the disposal points of five industrial effluents in Trans-Amadi Industrial Area of Port Harcourt, Nigeria

Chikwe, T.N.; Onojake, M. C.

doi:10.4314/jasem.v21i1.4

Cited by 2 publications

(8 citation statements)

References 13 publications

(14 reference statements)

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“…Ma [21] equally stated that the tolerance limit of PH varies from 6 to 9 for wastewater. Likewise, Chikwe and Onojake [29] concurred with the values given by Ma [21] for industrial effluents. Sathya [22] reported that Ravindra etal.…”

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringsupporting

confidence: 76%

“…Ph: According to Ma [21], PH, or potential hydrogen refers to its H + activity and it is given as the log of the reciprocal of H+ activity at a given temperature. Chikwe and Onojake [29] stated that the PH is a numeric scale used to specify the acidity or basicity of an aqueous solution. Chikwe and Onojake [29] further reported that Aina etal.…”

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

“…Chikwe and Onojake [29] stated that the PH is a numeric scale used to specify the acidity or basicity of an aqueous solution. Chikwe and Onojake [29] further reported that Aina etal. (92) suggested that industrial discharge violations of PH will increase maintenance requirements of pumps.…”

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

“…Ma [21] also stated that the world health organization (WHO) guideline constrained the maximum conductivity values for discharge of wastewater from hotels into sewages to 1000Us/cm. Chikwe and Onojake [29] said that WHO stipulated that wastewater effluent conductivity limits should be less than or equal to 500Uscm -1 . Orion enterprises [28], a major supplier of effluent test equipment, in their manual specified that APHA (92) standard set industrial effluent values to be as high as 10000 Us/cm.…”

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

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Comparative Analysis of Gas-Turbine Engine Diagnostics through Compressor Wash Wastewater Parameter Monitoring for Geregu Gas-Turbine Power Plant

Mohammed,

Ozigis,

Lawal

2023

AJERD

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This paper focuses on finding a lasting solution to the reason why offline compressor washing of unit 13 at Geregu Power plc in Ajaokuta does not restore power output lost due to fouling back to the rated output, as is the case for the other two (2) units in the plant and for several reported cases published in the literature. Monitoring of parameters closely related to the power output was carried out to find out the root causes for the low output recovery after offline compressor wash and came up with a successful diagnosis by interrelating GT13 wash effluent test results of parameters like conductivity, turbidity, and heavy metal concentration with parameters of two (2) other turbines in the plant. Using statistical tools like the mean and Pearson correlation coefficient for the four-year period, the mean comparative result indicates that the conductivity of GT13 was higher than that of GT11 and GT12 by 50% and 79%, respectively. The turbidity of GT13 was 570% and 700% higher than that of GT11 and GT12. The Pearson correlation coefficients of GT13 effluent conductivity, turbidity, and silica content relative to the power output recovery after wash were (-89.2%), (-64.4%), and (-77.3%), respectively, and the covariance of each of the three parameters relative to one another was high. Effluent Ph as a factor was discarded based on its 0% linear correlation coefficient with the output. The conclusion reached is that the co-linear relationship between conductivity, silica content, and effluent turbidity is responsible for GT13's low output recovery after the wash.

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Section: Key Effluent Parameters For Gas Turbine Engine Monitoringsupporting

confidence: 76%

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

Section: Key Effluent Parameters For Gas Turbine Engine Monitoringmentioning

confidence: 99%

See 2 more Smart Citations

Comparative Analysis of Gas-Turbine Engine Diagnostics through Compressor Wash Wastewater Parameter Monitoring for Geregu Gas-Turbine Power Plant

Mohammed,

Ozigis,

Lawal

2023

AJERD

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show abstract

“…The maximum percent reduction of total solids (99.99%) was at par at 20% (0.14 mg/l), 40% (0.10 mg/l), 60% (0.06 mg/l) and 80% UDE (0.66 mg/l), and 100% UDE (0.14 mg/l) (Table 2). TSS quality checks the wastewater after treatment in the plant and is defined as the dry weight of particles trapped by a filter (Chikwe and Onojake, 2016). UDE is characterized by higher levels of TDS, which is contributed by a higher concentration of biodegradable organic matter (Kotteswari et al, 2012).…”

Section: Environment Conservation Journalmentioning

confidence: 99%

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

Sharma,

Phutela

2023

ECJ

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In the present manuscript, the growth profile of the microalgae Spirulina sp. NCIM 5143 was studied. Screening was performed on four commercial media, i.e., blue‒green-11 (BG-11), Bold’s basal medium (BBM), algal culture medium (ACM), Zarrouk’s medium (ZM), and different concentrations (20%, 40%, 60%, 80%, and 100%) of unsterilized dairy effluent (UDE). Characterization of biomass was performed to assess its biochemical composition through various assays. Elemental composition and bioactive compound analysis were accomplished by inductively coupled plasma-atomic emission spectroscopy (ICP‒AES) and gas chromatography‒mass spectrometry (GC‒MS), respectively. The results revealed that maximum values of most of the parameters, i.e., optical density (0.21), chlorophyll (2.00 mg/l), proteins (119.17 mg/l), and wet (4.06 g/l) and dry biomass weight (0.28 g/l), were found on ZM. For UDE, maximum growth parameters and the highest nutrient removal efficiency were obtained at 100% concentration. Biochemical analysis revealed that total Kjeldahl nitrogen (7.14±0.49%), crude protein (48.23± 3.34%), total antioxidant activity (3.07±0.03 mg AAE/g), and total phenols (8.88±1.93 mg GAE/g) were present in the biomass. Elemental and GC‒MS analysis detected essential micronutrients and many bioactive compounds, respectively. Hence, this study proved that Spirulina sp. NCIM 5143 has the potential for the management of waste dairy effluent. This study also showed its cost-effectiveness, as the dairy effluent analyzed is used without any kind of sterilization. In addition, its biomass is rich in several essential elements, antioxidants, and bioactive compounds of therapeutic and nutraceutical importance.

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An appraisal of physicochemical parameters and some trace metals at the disposal points of five industrial effluents in Trans-Amadi Industrial Area of Port Harcourt, Nigeria

Cited by 2 publications

References 13 publications

Comparative Analysis of Gas-Turbine Engine Diagnostics through Compressor Wash Wastewater Parameter Monitoring for Geregu Gas-Turbine Power Plant

Comparative Analysis of Gas-Turbine Engine Diagnostics through Compressor Wash Wastewater Parameter Monitoring for Geregu Gas-Turbine Power Plant

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

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