scholarly journals Assessment of the Quality of Industrial Wastewater in Three Metropolitan Cities in Bangladesh

2017 ◽  
Vol 9 (2) ◽  
pp. 21-25
Author(s):  
N Sultana ◽  
H Muktadir ◽  
MAH Chowdhury ◽  
MA Baten
Keyword(s):  
Physicochemical Parameters ◽  
Industrial Wastewater ◽  
Industrial Effluents ◽  
Metropolitan Cities ◽  
Metal Contents ◽  
The Mean ◽  
Wastewater Samples ◽  
Harmful Effects ◽  
Mean Concentration

This study was conducted to assess the quality of different industrial wastewater. Some physicochemical parameters viz., pH, EC, TDS, Na+, K+, Ca++, Mg++, CO32-, HCO3-, Cl-, SO42-, PO43- including heavy metal contents like Pb, Cd, Ni, Cr, As, Zn and Cu concentration from collected wastewater samples were analyzed. Atomic Absorption Spectrophotometer was used for analyzing the heavy metals in the wastewater samples. The results revealed that, the values of pH, EC, TDS ranged between 6.44-9.0, 471-4307 ?S cm-1, 1952-5209 mg L-1, respectively. The higher mean concentrations of Na+, K+, Ca++, Mg++, CO3-, HCO3-, Cl-, SO42-, PO43- were 1407.8, 27.9, 69.9, 76.6, 2.7, 11.7, 1688, 76.6, 6.1 mg L-1, respectively. The mean concentration of Cd, Ni, Cr, Zn, and Cu was 0.17, 0.87, 85.73, 0.80, and 1.56 mg L-1, respectively. Among trace elements Ni and Cd, Zn and Cd, Zn and Cr showed a positive relationship. To avoid the harmful effects of wastewater on environment it is imperative to treat industrial effluents before discharge into open environment.J. Environ. Sci. & Natural Resources, 9(2): 21-25 2016

scholarly journals Evaluation of Cauda Epididymal Semen Quality of Crossbred Bulls in the Tropics

2016 ◽  
Vol 4 (1) ◽  
pp. 130-132
Author(s):  
Binoy S Vettical
Keyword(s):  
Semen Quality ◽  
Progressive Motility ◽  
The Mean ◽  
The Tropics ◽  
Mean Concentration

The objective of the study was to evaluate the quality of semen retrieved from cauda epididymis of crossbred bulls in the tropics.  Testes from one hundred and twenty six recently slaughtered cross bred bulls in the tropics were used for the analyais. The total and progressive motility percentage obtained for epididymal semen were 49.17±9.26 per cent and 27.5±9.11 per cent respectively.  The mean concentration obtained for epididymal semen was 37,175x106 ±7612x106 per ml.  The mean percentage of live and dead sperms was 84.5±8.02 per cent and 15.5±8.02 per cent respectively.  The mean percentage of normal spermatozoa, spermatozoa with abnormal heads, abnormal tails, spermatozoa with a proximal protoplasmic droplet and distal protoplasmic droplet were 35.67±2.30, 3.17±1.58, 2.33±0.61, 11.67±4.01 and 47.17±3.17 per cent respectively. Int J Appl Sci Biotechnol, Vol 4(1): 130-132

scholarly journals Investigation of Water Quality and Fish Status of Karimganj Haor Area in Kishoreganj

2018 ◽  
Vol 10 (2) ◽  
pp. 19-27
Author(s):  
MS Islam ◽  
J Jahan ◽  
MA Mou ◽  
MH Kabir ◽  
MJ Uddin
Keyword(s):  
Physicochemical Parameters ◽  
Organic Waste ◽  
Oxygen Demand ◽  
Aquatic Organisms ◽  
Alkaline Condition ◽  
Fish Production ◽  
The Mean ◽  
Total Dissolved Solid ◽  
Standard Limit ◽  
Mean Concentration

The study was conducted to investigate the physicochemical parameters and anionic constituents in water of the haor area of Karimganj during the period from October to December 2016. The water samples were collected from 3 different sampling stationsas St-1 (Bailabeel), St-2 (Ummabeel) and St-3 (Alkharabeel) for analyzing the temperature, electrical conductivity (EC), total dissolved solid (TDS), pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), alkalinity, hardness, fluoride (F-), chloride (Cl-), bromide (Br-), nitrite (NO2 -) , nitrate (NO3 -), and sulphate (SO4 2-) in water. The study also assessed the fish status of the Karimganjhaor area. The result of the study showed that the mean temperature (26.2 °C) of water was within the standard limit. The mean EC and TDS contents were 555 μS/cm and 526 mg/l, respectively which was satisfactory level for aquatic organisms. The mean DO (6.7 mg/l) content was favorable but BOD (2.7 mg/l) content indicated some extent of organic waste pollution. The mean pH and alkalinity were 7.30 and 338 mg/l, respectively indicated alkaline condition in haor water, and whereas hardness was 122 mg/l revealed that the water was suitable for fish production. The mean concentration of F-, Cl-, Br-, NO2 - , NO3 -, and SO4 2- were 0.35, 130.3, 0.16, 3.38, 34.84 and 85.60 mg/l, respectively depicted that the water were poorly improvised with these anionic constituents.J. Environ. Sci. & Natural Resources, 10(2): 19-27 2017

Characterization of textile wastewater and other industrial wastewaters by respirometric and titration biosensors

1999 ◽  
Vol 40 (1) ◽  
pp. 161-168 ◽  
Author(s):  
A. Rozzi ◽  
E. Ficara ◽  
C. M. Cellamare ◽  
G. Bortone
Keyword(s):  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Oxygen Uptake Rate ◽  
Industrial Effluents ◽  
Textile Wastewater ◽  
Efficient Operation ◽  
Autotrophic Bacteria ◽  
Degradation Rates ◽  
Wastewater Samples

Many industrial effluents, such as textile and tannery wastewater, contain slowly biodegradable, refractory or even toxic compounds at variable concentrations which may interfere with the efficient operation of biological wastewater treatment plants, in particular with the nitrification stage. Agro-industrial effluents may occasionally contain sanitising agents which are by definition biocides. Two different biosensors, based on respirometry (oxygen uptake rate, OUR measurements) and on basic titration respectively, were used to measure degradation rates of industrial wastewater samples by autotrophic bacteria (ammonia oxidizers). Specific sanitisers such as sodium hypochlorite and benzalconium chloride were used to evaluate and compare the nitrifying activity measured by the two different instruments.

scholarly journals Spatial analysis of water quality of the Karra River, Hetauda, Nepal

2016 ◽  
Vol 8 (1) ◽  
pp. 58-65
Author(s):  
Sadhana Pradhanang
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Surface Waters ◽  
Industrial Wastewater ◽  
Good Condition ◽  
Oxygen Demand ◽  
Industrial Effluents ◽  
Physico Chemical ◽  
Water Region

The assessment of water quality of Karra River in Hetauda, Nepal was carried out by determining the changes in the concentration levels of eight physico-chemical parameters (pH, Electric conductivity (EC), bicarbonate, dissolved oxygen (DO), silica, chemical oxygen demand (COD), phosphate and nitrate). The samples were collected from upstream, industrial belt and downstream of the Karra River. The Karra River is the dumping ground for industrial effluents of Hetauda industrial district (HID). On analysis, the concentrations of most of the physico-chemicals parameters were found to be above the prescribed limits for industrial wastewater into inland surface waters. Dissolved Oxygen was found to be in the range of 0.49- 8.47 mg/L while COD, nitrate and phosphate were recorded in the range of 8.3-367 mg/L, 0.35- 78.22 mg/L and 0.01-1.64 mg/L, respectively. Concentrations of most of these parameters were within the prescribed limits in the samples collected from upstream and downstream, revealing the river still in good condition at these points indicating less human interference at the head water region and good self-purification capacity at downstream. However the concentrations of the pollutants’ parameters are higher at the sample points just after effluent discharge.Journal of Hydrology and Meteorology, Vol. 8(1) p.58-65

scholarly journals The effect of feeding magnesium-enriched diets on the quality of the albumen of stored eggs

1977 ◽  
Vol 37 (1) ◽  
pp. 35-44 ◽  
Author(s):  
J. B. Monsey ◽  
D. S. Robinson ◽  
W. S. Miller ◽  
Margaret Ellis
Keyword(s):  
Food Consumption ◽  
Shell Thickness ◽  
Live Weight ◽  
Egg White ◽  
Egg Number ◽  
The Mean ◽  
Egg Shell ◽  
Mean Concentration ◽  
Effect Of Feeding

1. Pullets were given from 1-d-old diets containing 1.6, 4.1, 8.1 and 12.0 g Mg/kg. Only small effects of these diets on live weight, food consumption, egg number, egg weights or egg-shell thickness were observed except at the highest level (12.0 g Mg/kg) which caused diarrhoea and an appreciable lowering of the live weight of growing pullets. A further group was given from point-of-lay a diet containing 9.3 g Mg/kg.2. Eggs laid on 3 consecutive days from each of eighteen hens were collected at intervals of 3 weeks until the birds were 68.5 weeks old. Eggs laid on the 3rd day were used to determine the initial proportion of thick egg-white present and also the concentration of Mg, Ca, Na and K in the thick egg-white. Eggs laid on the 1st and 2nd days were stored at 20° for 20 d to establish the proportion of thick egg-white remaining after storage.3. With the unsupplemented diet the proportion of residual thick egg-white after storage of eggs for 20 d at 20° was 306, 161 and 305 mg/g total egg-white when the hens were 26.5, 53.5 and 68.5 weeks of age respectively. When the diet containing 9.3 g Mg/kg was given, the proportion of thick egg-white after storage remained approximately 400 mg/g throughout the period of the trial.4. The mean Mg concentration in the thick egg-white of eggs laid by hens given unsupplemented diets was 5.77 mm. The addition of extra Mg to the diet increased the content of Mg in the thick egg-white, for example when the diet contained 9.3 g Mg/kg the mean concentration rose to 7.69 mm.

scholarly journals Roof Runoff Water as Source of Pollution: A Case Study of Some Selected Roofs in Orlu Metropolis, Imo State, Nigeria

2016 ◽  
Vol 50 ◽  
pp. 53-61 ◽  
Author(s):  
Francis Chizoruo Ibe ◽  
Bridget Onyekachi Ibe
Keyword(s):  
Heavy Metals ◽  
Runoff Water ◽  
Roof Runoff ◽  
Thatch Roof ◽  
Roofing Material ◽  
The Mean ◽  
Mean Concentration ◽  
Source Of Pollution

Samples collected from different runoffs; AR, GMR, TR, ASR, and DR for aluminum roof, galvanized metal roof, thatch roof, asbestos roof and ambient rainfall respectively were analyzed for pH, conductivity, turbidity, TDS, TSS, NO3-, PO43-, Cd, Cu, Fe, Zn and Pb. The result indicates that the mean concentration of the parameters analyzed ranged from 5.8± 0.39 –7.10±0.70, 22.25±11.70-79.99± 3.40μScm-1, 1.47±0.43 - 46.53±1.60mg/l, 11.90±0.93 - 59.83±1.62NTU,15.53±0.70 - 204.53±5.08mg/l, 0.93±0.06 - 2.55±0.13 mg/l, 1.33±0.22 - 7.30±0.57mg/l respectively for pH, conductivity, TDS, turbidity, TSS, PO43-and NO3-, and the levels of the heavy metals (in mg/l); Cd, Cu, Fe, Zn and Pb ranged from 0.0023±0.001– 0.0521±0.004, 0.052±0.01–0.2483±0.02, 0.0348±0.01–1.1120±0.07, 0.0161±0.01-0.8093±0.02 and 0.0106±0.01-0.0499±0.002 respectively. Ranking of the heavy metal in roof runoff is in the order; Fe>Zn>Cu>Cd>Pb. The result compared with WHO standard showed elevated level of the parameters analyzed with Cd and Pb exceeding the limit. Though the result of this study showed some variability which is an indication of the type of roofing material; air quality of the environment and industrial activity going on in the area. It could be deduced from the result that roof runoff may be a non point source of environmental pollution owning to the release of heavy metals and other pollutants into the environment, and increased concentration of some of the pollutants as reported by this study suggests that roof runoff water could impact negatively to the environment and if consumed without being treated may be injurious to human health.

scholarly journals PENGARUH PEMBERIAN VITAMIN E TERHADAP KUALITAS SPERMATOZOA MENCIT JANTAN (Mus musculus) YANG DIBERI PAPARAN SUHU

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Franco Luhulima ◽  
Lydia Tendean ◽  
Edwin De Queljoe
Keyword(s):  
Vitamin E ◽  
Sperm Quality ◽  
Not Given ◽  
Observational Method ◽  
Spermatozoa Motility ◽  
The Subject ◽  
The Mean ◽  
Temperature Exposure ◽  
Mean Concentration

Abstract: Vitamin E is an antioxidant for two classes of molecule, namely Tocopherol and Tocotrienol that have role in body nutrient. Purpose of this study was to determine the effect and mechanism of vitamin E on the quality of spermatozoa of mice. This study used a descriptive observational method. The subject of the study consist of 27 mice were divided into 3 groups: group P0 not given temperature exposure and vitamin E, P1 groups given exposure to temperatures of 40°C, P2 groups given exposure to temperatures of 40°C and vitamin E. Treatment carried out for 32 days. The results of research on the P2 group showed improvement in the quality of spermatozoa with a mean concentration of spermatozoa (68.7 x105mL), the mean percentage of normal spermatozoa morphology (61%), the mean percentage of abnormal spermatozoa morphology (39%), the mean percentage spermatozoa motility Ma (38.1%). Conclusion: sperm quality can be improved with vitamin E after exposure to hot temperatures. Keywords: quality of spermatozoa, vitamin E, temperature exposure.     Abstrak: Vitamin E adalah antioksidan untuk dua kelas molekul zat yaitu tokoferol dan tokotrienol yang mempunyai aktivitas dalam nutrisi tubuh. Vitamin E melawan radikal bebas dengan menghambat perioksidasi lipid. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh dan mekanisme vitamin E terhadap kualitas spermatozoa mencit. Penelitian ini menggunakan metode observasional  deksriptif. Subyek penelitian sebanyak 27 ekor mencit yang terbagi menjadi 3 kelompok: kelompok P0 tidak diberikan paparan suhu dan vitamin E, kelompok P1 diberikan paparan suhu sebesar 40°C, kelompok P2 diberikan paparan suhu sebesar 40°C dan vitamin E. perlakuan dilakukan selama 32 hari. Hasil penelitian pada kelompok P2 menunjukkan perbaikan kualitas spermatozoa dengan rerata konsentrasi spermatozoa (68,7x105mL), persentase rerata morfologi normal (61%), persentase rerata morfologi abnormal spermatozoa (39%), persentase rerata motilitas Ma ( 38,1%). Simpulan: kualitas spermatozoa dapat diperbaiki dengan pemberian vitamin E setelah pemaparan suhu panas Kata kunci: kualitas spermatozoa, vitamin E, paparan suhu.

scholarly journals Impact of industrial wastes on the water quality of tropical river, Ami (India)

2011 ◽  
Vol 3 (2) ◽  
pp. 219-223 ◽  
Author(s):  
Uday Bhan Prajapati ◽  
Anil K. Dwivedi
Keyword(s):  
Water Quality ◽  
Seasonal Variation ◽  
Statistical Analysis ◽  
Physicochemical Parameters ◽  
Industrial Effluents ◽  
Summer Season ◽  
The Other ◽  
Industrial Wastes ◽  
Tropical River

Industries discharge their effluents which are rich in solids, may it be in the form of TSS or TDS. These solids affect the other physicochemical parameters of the water body. Present study deals with the investigation of seasonal variation and statistical analyses of the selected parameters, in river Ami, in light of the industrial effluents. The study records that summer season, appears to be the most polluted, that is during the period when the river carries little amount of water. Statistical analysis showed that all the physicochemical parameters were positively correlated except TDS and temperature.

scholarly journals Use of Mercury in Dental Silver Amalgam: An Occupational and Environmental Assessment

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Nadia Jamil ◽  
Mujtaba Baqar ◽  
Samar Ilyas ◽  
Abdul Qadir ◽  
Muhammad Arslan ◽  
...  
Keyword(s):  
Mercury Concentration ◽  
Preventive Measures ◽  
Potential Health ◽  
Blood Samples ◽  
Dental Clinics ◽  
The Mean ◽  
Wastewater Samples ◽  
Dental Assistants ◽  
Mean Concentration ◽  
Occupational Exposure To Mercury

The objective of this study was to assess the occupational exposure to mercury in dentistry and associated environmental emission in wastewater of Lahore, Pakistan. A total of ninety-eight blood samples were collected comprising 37 dentists, 31 dental assistants, and 30 controls. Results demonstrate that the dentistry personnel contained significantly higher mean concentration of mercury in their blood samples (dentists: 29.835 µg/L and dental assistants: 22.798 µg/L) compared to that of the controls (3.2769 µg/L). The mean concentration of mercury was found maximum in the blood samples of older age group (62.8 µg/L) in dentists and (44.3 µg/L) in dental assistants. The comparison of mercury concentration among dentists, dental assistants, and controls (pairing based on their ages) revealed that the concentration increased with the age and experience among the dentists and dental assistants. Moreover, the mercury concentration in all the studied dental wastewater samples, collected from twenty-two dental clinics, was found to be exceeding the recommended discharge limit of 0.01 mg/L. Therefore, we recommend that immediate steps must be taken to ensure appropriate preventive measures to avoid mercury vapors in order to prevent potential health hazards to dentistry personnel. Strong regulatory and administrative measures are needed to deal with mercury pollution on emergency basis.

scholarly journals Removal of COD in wastewaters by activated charcoal from rice husk

2017 ◽  
Vol 29 (3) ◽  
pp. 265-277 ◽  
Author(s):  
Yacouba Sanou ◽  
Samuel Pare ◽  
Gnon Baba ◽  
Nyonuwosro Kwamivi Segbeaya ◽  
Libona Yvonne Bonzi-Coulibaly
Keyword(s):  
Chemical Oxygen Demand ◽  
Rice Husk ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Oxygen Demand ◽  
Wastewater Sample ◽  
Solution Ph ◽  
Experimental Parameters ◽  
Wastewater Samples

The discharge of industrial wastewater and domestic sewage from Kara city affects the quality of Kara river water. To mitigate this water pollution, the capacity of mesoporous charcoal prepared from rice husk (RH) to remove the chemical oxygen demand (COD) in wastewater samples from five sites of Kara City was investigated. The temperature, pH, conductivity, total suspended solids (TSS), biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and oxidizable matters (OM) of samples were analyzed. Batch experiments were applied to study the COD reduction by using powdered RH and two types of activated charcoals (AC). The experimental parameters used to identify optimal conditions for COD abatement are solution pH, contact time, mass of adsorbent and initial value of COD including the nature of wastewater. Activated charcoals showed a higher attenuation capacity of the COD in comparison with the rice husk powder. Maximal abatement rate (100%) of COD removal was obtained for the wastewater sample with a COD of 1 060 mg O2∙L-1 treated at pH 8 with the charcoal GAC-Base using an adsorbent concentration of 10 g∙L-1 with a contact time of 60 min.

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