scholarly journals Industrialisation Scenario at Sreepur of Gazipur, Bangladesh and Physico-chemical Properties of Wastewater Discharged from Industries

2019 ◽  
pp. 1-14 ◽  
Author(s):  
Md. Billal Hossain ◽  
Md. Nurul Islam ◽  
Mohammad Shamsul Alam ◽  
Md. Zakir Hossen
Keyword(s):  
Treatment Plant ◽  
Chemical Properties ◽  
Physicochemical Characteristics ◽  
Mean Value ◽  
Dry Season ◽  
Effluent Treatment ◽  
Industrial Growth ◽  
Physico Chemical ◽  
Textile Dyeing ◽  
Wastewater Samples

This study was conducted to explore the present trend and pattern of industrial growth with spatial distribution of industries and seasonal extent of physicochemical characteristics of wastewater at Sreepur of Gazipur, Bangladesh. The wastewater samples were collected from 5 locations in three seasons viz. pre-monsoon, monsoon and dry season. A total of 120 medium to large industries were surveyed, among those 52 were in red category, 53 were in orange-B category, 13 were in orange-A and only 2 were in green category. In 1995, there were only three industries, which gradually increased to a total of 29 in 2005. Among them, 11 were in red category and 18 were in orange-B category. But from 2006-2010, a total 59 industries were developed and most of them were in red and orange-B categories. Similarly, during the period of 2011 to March 2013, a total 16 industries were developed, among them 8 industries were in red and 3 were in orange-B category. Major types of wastewater discharging industries were textile, dyeing, washing and printing. Among the surveyed industries about 33% didn’t have any effluent treatment plant (ETP). The mean value of pH, EC, DO, BOD, COD and TDS of wastewater were 7.28, 2.64, 1.62 mg L-1, 82.0 mg L-1, 217.31 mg L-1 and 1380 mg L-1, respectively during pre-monsoon; 6.7, 1.15, trace, 8.0 mg L-1, 152.4 mg L-1 and 539.58 mg L-1, respectively during monsoon and 7.7, 1.82, 0.74 mg L-1, 48.8 mg L-1, 204.8 mg L-1 and 993.6 mg L-1, respectively during dry season. Average DO concentrations in all seasons and sites were significantly low, while BOD and COD contents were higher in pre-monsoon and dry seasons than the DoE permissible limit. The study concluded that the area is now a hub of polluting industries which are mostly liable to pollute the surrounding environment.

Bacterial assisted treatment of anaerobically digested distillery wastewater

RSC Advances ◽  
2015 ◽  
Vol 5 (87) ◽  
pp. 70977-70984 ◽  
Author(s):  
K. Sankaran ◽  
Lakshmi Pisharody ◽  
G. Suriya Narayanan ◽  
M. Premalatha
Keyword(s):  
Treatment Plant ◽  
Energy Generation ◽  
Effluent Treatment ◽  
Chemical Characteristics ◽  
Physico Chemical ◽  
Effluent Treatment Plant ◽  
Distillery Wastewater ◽  
Biomass Availability ◽  
Easy Operation

Treatment of ADSW with culture rich inPseudomonassp. resulting benefits such as improved physico-chemical characteristics; biomass availability for energy generation; easy operation of subsequent downstream units of effluent treatment plant.

Designing a Technology of Industrial Sewage Waters Purification from the Spent Polishing Powder Based on Ceric Oxide

2018 ◽  
Vol 284 ◽  
pp. 719-725 ◽  
Author(s):  
T.A. Vasilenko ◽  
A.D. Mishina
Keyword(s):  
Chemical Properties ◽  
Wastewater Purification ◽  
Purification Method ◽  
Ceric Oxide ◽  
Solids Concentration ◽  
Physico Chemical ◽  
Primary Activity ◽  
Wastewater Samples ◽  
Physical And Chemical ◽  
Industrial Sewage

The primary activity of an enterprise, where the wastewater samples have been taken, is applying lacquer coatings to glass and the mirrors production. For washing glass before the application of coatings a suspension of powder based on ceric oxide is prepared, which is used as a polishing solution. The physical and chemical properties of industrial sewage waters, generated after glass polishing, and of the initial and spent polishing powder based on ceric oxide have been researched. The optimal doses of flocculating agents for purifying wastewaters in order to reduce turbidity, suspended solids concentration and dry residue have been determined. After the flocculation the advanced treatment of the water was done, by means of filtering elements with pore size 5 and 1 μm, produced by the Pentek Company. The process scheme of wastewater purification, including the physico-chemical method (flocculation) and mechanical purification method by using bag filters, has been developed.

scholarly journals Sensory Profile and Physico-Chemical Properties of Artisanal Honey from Zulia, Venezuela

Foods ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 339 ◽  
Author(s):  
Deyanira Araujo ◽  
Pilar Ruiz Pérez-Cacho ◽  
Salud Serrano ◽  
Rafaela Dios-Palomares ◽  
Hortensia Galán-Soldevilla
Keyword(s):  
Physicochemical Parameters ◽  
Chemical Properties ◽  
Mean Value ◽  
Sensory Profile ◽  
Total Acidity ◽  
Free Acidity ◽  
Chemical Parameters ◽  
Colour Intensity ◽  
Physico Chemical ◽  
The Mean

The physico-chemical parameters and the sensory profile were determined in honeys from apiaries of the Mara and Maracaibo of Zulia State (Venezuela). The analysis of variance showed that there were no significant differences in the mean value between apiaries for most of the physicochemical parameters and sensory attributes. The obtained value for pH (3.58–4.08), free acidity (30.9–36.0 meq/kg), lactone acidity (9.0–14.3 meq/kg), total acidity (42.1–46.0 meq/kg), moisture content (19.1–20.0%), diastase activity (8.11–12.7 ºG), colour intensity (41.5–86.6 mm Pfund), hydroxymethylfurfural (15.7–26.0 mg/kg), and electrical conductivity (0.33–0.52 mS/cm) were within the criteria set by international quality regulations. The sensory profile of these honeys is characterized by being amber in colour, with a floral, acid fruit, balsamic and animal odour/aroma, a sweet, slightly acid taste, and by being fluid and of a medium persistence.

scholarly journals Seasonal variation and characterization of effluents of fertilizer factory

2015 ◽  
Vol 26 (2) ◽  
pp. 136-146
Author(s):  
K Fatima ◽  
MK Hossain ◽  
MA Islam
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Quality Parameters ◽  
Mean Value ◽  
Dry Season ◽  
Chemical Parameters ◽  
Wet Season ◽  
Physico Chemical ◽  
The Mean ◽  
Nitrite Nitrate

The study was carried out to assess the water quality of the Jamuna river affected by effluents discharged from the nearby Jamuna Fertilizer Company Limited and its temporal change over wet and dry seasons due to change of the physico-chemical parameters. Effluents of the factories and water samples were collected from four different selected stations during the period of June to August 2014 and January to March 2015.The results further revealed that the water samples showed a remarkable variation in physico-chemical parameters during the wet and dry season. In wet season the mean value of temperature, pH, EC, TDS, TSS, DO, BOD, ammonium, nitrite, nitrate and chloride were28.63± 3.79 °C, 8.10± 0.85, 664.41± 599.54µscm-1, 370.91± 111.38 ppm, 74.49± 25.90 ppm, 6.11 ± 1.28 ppm, 75.39 ± 140.86 ppm 296.74± 303.03 ppm, 12.31±21.38 ppm,  15.19±24.49 ppm and 15.23±8.72 ppm, respectively In the dry season the mean value of temperature, pH, EC, TDS, TSS, DO, BOD, ammonium, nitrite, nitrate and chloride were31.69 ±3.18°C, 8.44± 0.66, 786.25±551.18µscm1, 338.37± 94.70 ppm, 72.08± 58.83 ppm, 5.45 ± 0.95 ppm, 86.93 ± 159.82 ppm, 347.91± 291.60 ppm, 13.68±23.1 ppm, 18.34± 24.92 ppm and 18.3±9.32 ppm, respectively. The comparative study showed that most of the effluent and water quality parameters were higher in dry season than those of the wet season because in dry season less quantity of water remains in the river and in wet season more water remains in river that has great dilution capacity. For existence and conservation of aquatic resources, it is essential to investigate the water quality and surrounding environment of the river.Progressive Agriculture 26 (2): 136-146, 2015

scholarly journals Baseline Monitoring of Elemental Contamination Levels in Soil Samples in Elebele Community, Bayelsa State, Nigeria

2019 ◽  
Vol 8 (1) ◽  
pp. 20
Author(s):  
Nwankwoala H. O. ◽  
Omemu S. O.
Keyword(s):  
Surface Soil ◽  
Sandy Loam ◽  
Chemical Properties ◽  
Mean Value ◽  
Physico Chemical ◽  
Top Soil ◽  
Metal Levels ◽  
Subsurface Soil ◽  
Standard Sampling ◽  
Contamination Levels

This study evaluated the physico-chemical properties of the soil and water in Elebele Community in Ogbia Local Government Area of Bayelsa State, Nigeria. Standard sampling and analytical methods were employed. The predominant soils of the region are mainly sandy-loam and clayey-loamy. The soil physico-chemical properties were in good status as they were not toxic. Soil particle size distribution (sand silt and clay) was observed as follows: sand content ranged between 50.6%-86.2% with a mean of 64.5% at the surface soil while the subsurface soil ranged between 35%-80.2% with a mean of 60.2%. Silt on the other hand ranged between 7.8%-36% and a mean of 25.1% at the surface and ranged between 12.8-49.6% and mean of 25.4% at the subsurface while clay ranged between 3.4%-16% and mean of 9.4% at the surface and also ranged between 7%-16% and mean value of the soil. However, the soil physical properties were relativity good for sustainability. Also, the metals studied were detected in all the sites. Generally the concentrations of the metals were highest at the top soils. This is expected since the top soil is the point of contact. The metal levels in all the sites were significantly higher than the levels observed in the control sites. Sources of heavy metals in soils like inorganic fertilizers and pesticides need to be controlled.

Assessment of Physico-Chemical Properties of the Pasur River Estuarine Water

2021 ◽  
Vol 24 (1) ◽  
pp. 1-16
Author(s):  
SHT Shefat ◽  
MA Chowdhury ◽  
F Haque ◽  
J Hasan ◽  
MA Salam ◽  
...  
Keyword(s):  
Negative Correlation ◽  
Significant Positive Correlation ◽  
Pearson Correlation ◽  
Chemical Properties ◽  
Dry Season ◽  
Estuarine System ◽  
Positive Correlation ◽  
Practical Salinity Unit ◽  
Physico Chemical ◽  
River Estuarine

This study aimed to investigate physico-chemical properties of the Pasur River Estuarine (PRE) water connected to the Sundarbans mangrove ecosystem during the dry season for examining the ecosystem health. In-situ measurement and water sample collection were performed to assess physico-chemical properties at fifteen sampling stations along the main axis of the estuary in March 2018, April 2018, January 2019 and March 2019. Surface water temperature ranged from 20.7 to 33.7°C, pH from 7.1 to 7.9, and salinity from 8.5 to 16.2 PSU (practical salinity unit). Dissolved Oxygen (DO) concentration varied from 5.9 to 8.4 mg/L. Ammonium-nitrogen (NH4 +) was the dominant nitrogenous compound among the dissolved inorganic nitrogenous (NH4 + +NO3 -+NO2 -) compounds, and ranged from 0.11 to 2.11 mg/L. Higher NH4 + concentration in water column was largely attributed to release by tidal wash-out of the interstitial waters of the surficial mangrove sediments. In contrast, phosphate concentration varied from 0.07 to 5.8 mg/L. The Pearson correlation coefficient was calculated to elucidate the correlation among physico-chemical properties during the dry season. Temperature showed a significant positive correlation with salinity and total dissolved solids (TDS), and negative correlation with DO. Similarly, salinity showed a significant positive correlation with TDS and negative correlation with DO. According to the Redfield ratio, the PRE is a nitrogen-limited estuarine system during the dry season. Ann. Bangladesh Agric. (2020) 24(1) : 1-16

scholarly journals Physico-chemical properties of Rhododendron honey produced in Turkey

2013 ◽  
Vol 59 (3) ◽  
pp. 88-97 ◽  
Author(s):  
Pinar Goc Rasgele ◽  
Meral Kekecoglu
Keyword(s):  
Public Health ◽  
Chemical Properties ◽  
Physicochemical Characteristics ◽  
Invert Sugar ◽  
Honey Sample ◽  
Chemical Characteristics ◽  
Chemical Parameters ◽  
New Methods ◽  
Physico Chemical

Abstract Rhododendron honey is a monofloral honey and it is collected from the flowers of Rhododendron species widely spreading over many countries, mainly in America, Turkey, Indonesia, Australia. It is belived that Rhododendron honey treats several disorders and is used traditionally as an alternative medicine. The determination of the chemical characteristics of the Rhododendron honey is essential for public health. In this research, the physicochemical characteristics of Rhododendron, chestnut and flower honey samples collected from beekeepers in Turkey were determined and compared. Physico-chemical parameters such as moisture, acidity, sucrose, invert sugar, fructose/glucose, conductivity, diastase and hydroxymethylfurfural were analysed in each honey sample. According to the results obtained, no differences were found in physico-chemical properties of Rhododendron, honey samples, except from moisture and acidity compared with those of chestnut and flower honeys. In order to differentiate Rhododendron honeys, new methods should be developed. This honey should be reintroduced to medicine and used in pharmaceutical industry

Isolation and Physico-chemical Characterization of Mung Bean Starches

2008 ◽  
Vol 4 (1) ◽  
Author(s):  
El-Sayed Ali Abdel-Rahman ◽  
Fawzy A El-Fishawy ◽  
Mohamed A El-Geddawy ◽  
Tomas Kurz ◽  
Mohamed N El-Rify
Keyword(s):  
Mung Bean ◽  
Chemical Properties ◽  
Chemical Characterization ◽  
Mean Value ◽  
Starch Granules ◽  
Swelling Power ◽  
Irregular Shapes ◽  
Physico Chemical ◽  
Mung Bean Starch ◽  
Total Seed

The starch yields from both whole (MSI1) and decorticated mung bean seeds (MSI2) were 26.00 and 30.50% on total seed basis and 64.40 and 75.55% of total starch. Chemical analysis of the starch isolates i.e. MSI1 and MSI2 showed that they contained 9.00 and 8.90% moisture, 0.76 and 0.80% protein, 0.05 and 0.09% oil and 0.20 and 0.13% ash , respectively. The results also indicated that the purity of starch isolates was high. Microscopic examination (400X) showed that most mung bean starch granules had irregular shapes, which varied from oval, round to bean-shaped. Mung bean starch granule size varied from 7.65-33.15 µm with mean value at 20.40 µm. Studying the physico-chemical properties of mung bean starch indicated that the gelatinization temperature range was 65-69-75°C at initial, midpoint and final gelatinization of starch granules. Mung bean starch had a considerably lower degree of syneresis than other legume starches. Moreover, gel consistency decreased as starch concentration was increased. Viscosity of mung bean starch was high indicating that it had higher resistance to swelling and rupture than did cereal starches. The results indicated that the swelling power and solubility of the starch increased with increasing temperature. In addition, the solubility percentage increased, but non-linearly, with increasing swelling power.

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