Overview
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Key numbers
The worker extracted the full PDF text with layout preservation twice and compared extraction hashes before commit. The following lines are copied from numeric/table-bearing regions of the PDF and retain the source units and wording where legible:
- was put on and allowed to operate for 30 minutes. The drinking water quality standard (Table 1).
- 150mm sieve and the powdered sample was retained The removal efficiency (%) for each metal was
- al., 2010) %𝑅𝐹 = ∗ 100 (1)
- into a 250 mL beaker. 1 mL of nitric acid and 5 mL of Table 1: Heavy metals and their standard values used for the
- Heavy Metal WHO (2017) Standard (in mg/L)
- Almond Seed Shell: About 100 mL of each of the three Statistical Analysis: Descriptive analysis (mean,
- difference between the metal ion concentrations in the Physicochemical properties of wastewater: Table 2
- measured and placed in 250 mL Erlenmeyer flasks. to neutral, ranging from 7.32 to a mean of 7.38 (Table
- (ions) (Morgan, 2014). The acceptable limit for EC in Determination of Heavy Metals Fe2+, Pb2+, Mn2+, Ni,
- reducing the risk of soil salinization or negative while Table 4 shows the correlation analysis results of
- TDS values ranged from 292 ppm at site B to 406 ppm distribution of variation in heavy metal concentration
- ppm for site A, 292 ppm for site B, and 356 ppm for are provided in micrograms per milliliter (µg/mL) or
- site C (Table 2). TDS represents the total concentration milligrams per liter (mg/L). Generally, the
- water is 500 ppm, while for industrial wastewater, Cd > As > Ni. The highest concentration of Iron (Fe)
- sites are below the 500ppm limit, suggesting that the contamination in this area. UNICROSS recorded the
- between 0.21 Mg/L and 0.29 Mg/L. Salinity was (2.8324 µg/mL). Zinc was detected only in the sample
- recorded at 0.29 Mg/L for site A, 0.21 Mg/L for site B, from a source close to Niger Mill (6.0094 µg/mL),
- metals were either not detected or present in very low Table 4: Correlation analysis results showing the relationship
- to varying levels of heavy metal contamination in the Effluents Using Almond Seed Shell (AMS): Table 5a
- (Chiang et al., 2011; Pourret et al., 2021). Table 5b
- Table 5a: Variation in adsorption capacity of almond seeds from
- in different sites compared to WHO standards Table 5b: Initial concentration of metal ion concentrations of
- Pearson’s correlation coefficients (Table 4). A positive reveals significant variations in heavy metal
- This validates the result of Table 3. areas with elevated levels of metals to safeguard
Methods (brief)
- concentration of iron (Fe) found in the Niger Mill sample, while the sample from UNICROSS recorded the highest
- level of lead (Pb). The quantity of metal ions adsorbed from the effluent sample increases with an increase in the
- metal ions also increase. The initial metal ion concentration of the effluent sample decreased in the order
- assess their efficacy for contaminant removal from the environmental samples (wastewater) were collected
- Samples collection and preparation: Industrial and Applied Chemistry, University of Calabar and
- Municipality LGA, Cross River State was collected as and almost going into the annual extinction as when it
- sampled in September 2023. The samples were was collected.
- situ. The samples were first taken to the Department of Physiochemical Analysis of pH, EC, Salinity, TDS, and
- Food Science Technology Laboratory for Temperature: Wastewater samples were measured in
- collected from Almond Tree at the Department of Pure plates placed in a regulated oven and dried at 35 °C for
- 8 hours. The respective samples were disintegrated the treated effluent were determined using atomic
- with the aid of the jaw crusher into a well-clean mortar absorption spectroscopy (AAS). The concentration of
- pulverized samples were respectively emptied into a
- 150mm sieve and the powdered sample was retained The removal efficiency (%) for each metal was
- respectively emptied into a sample bag and labeled
- following the sample location number (Ekeanyanwu et 𝐶𝑖 − 𝐶𝑓
- Samples: Digestion of effluent samples for metal ion concentration of the metal ions before adsorption; Cf
- About 100 mL of well-stirred sample was measured
Implications
This page makes the source discoverable for category-level evidence routing. Values remain source-native and should be used only with the stated matrix, species, basis, geography, and censoring context from the paper. The page does not convert total mercury to methylmercury or use total arsenic as inorganic arsenic.
Wiki pages this source may touch
- Fish — marine, non-predatory (sardines, anchovies, salmon, cod)
- Mercury
- Cadmium
- Lead
- Arsenic
- Nickel
- Chromium
Verification notes
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Update history
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