scholarly journals Removal of Arsenic Contamination from Gomti River Water by using Activated Charcoal Absorbent Integrated with Solar Distillation Unit

2020 ◽  
Vol 32 (3) ◽  
pp. 550-554 ◽  
Author(s):  
Suresh Kumar Patel ◽  
Dhananjay Singh ◽  
Rahul Dev
Keyword(s):  
River Water ◽  
Low Cost ◽  
Arsenic Concentration ◽  
Uttar Pradesh ◽  
Arsenic Contamination ◽  
Isotherm Models ◽  
Gomti River ◽  
Solar Distillation ◽  
Freundlich Adsorption Isotherm ◽  
Removal Of Arsenic

Arsenic is a ubiquitous and short-term poisoning element, which affects living things. In this study, the removal of arsenic from Gomti river water, Lucknow, Uttar Pradesh integrated modified double slope solar still with activated adsorption bed has been applied. Arsenic contamination in Gomti river at five places were found in the river water in the range of 55.70 ppb to 681.60 ppb, which exceed the maximum permissible limit of 10 ppb as recommended by WHO. Maximum concentration of arsenic in water was found in Mohan Maekins (681.60 ppb). However, mean arsenic concentration in water followed the order: Gaughat (115.37 ppb) < Hanuman setu (297.80 ppb) < Barrage (302.62 ppb) <Kukrail (336.27 ppb) < Mohan Maekins (481.89 ppb). The amount of adsorbed arsenic was increased with increasing initial concentration of arsenic. The aim of this study is to develop a low-cost process for the removal of arsenic effectively including the production of potable water. After results, data were analyzed with ICP-MS method and also verified with Langmuir and Freundlich adsorption isotherm models.

scholarly journals Adsorption of UV254 in Kerian River water onto ZeliacTM: Analysis using linear and non-linear forms of isotherm models

2017 ◽  
Vol 19 (1) ◽  
pp. 74-81 ◽  
Keyword(s):  
River Water ◽  
Function Analysis ◽  
Low Cost ◽  
Error Function ◽  
Linear Regression Analysis ◽  
Freundlich Isotherm ◽  
Linear Analysis ◽  
Isotherm Models ◽  
Freundlich Isotherms ◽  
Non Linear

<p>The composite media, Zeliac<sup>TM</sup> was developed with the initial aim to provide low cost adsorbent with promising adsorption capacity. This study was conducted to investigate the removal of UV absorbance at 254 nm (UV<sub>254</sub>) in Kerian river water using Zeliac<sup>TM</sup> as the media. Batch experiments study was carried out to determine the optimum removal of UV<sub>254</sub> by Zeliac<sup>TM</sup>. The experimental data were fitted to Langmuir and Freundlich isotherms to investigate the adsorption mechanism. The results from batch study exhibit that Zeliac<sup>TM</sup> is capable to remove 74.4% UV<sub>254</sub> at the dosage of 7g/100 ml. Linear isotherm analysis suggests that the best fitting linear line is Freundlich isotherm with R<sup>2</sup> values of 0.9294 indicating multilayer adsorption. Similarly, non-linear regression analysis reveals that the adsorption of UV<sub>254</sub> by Zeliac<sup>TM</sup> is attributed by physisorption. The non-linear Freundlich isotherm gives a better fit to the adsorption of UV<sub>254</sub> than Langmuir isotherm with R<sup>2</sup> values of 0.9488. The results are supported with low values of X<sup>2</sup>, ARE, HYBRID and MPSED from the error function analysis.&nbsp; Additionally, it is noted that the linear analysis overestimates the constant parameters’ values for Freundlich isotherm, which cause larger errors as estimated by the error function analysis. Hence, non-linear analysis is more appropriate in explaining the batch experiment data.</p>

scholarly journals Studies on Removal of Cr (VI) from Aqueous Solutions Using Powder of Mosambi Fruit Peelings (PMFP) As a Low Cost Sorbent

2012 ◽  
Vol 9 (3) ◽  
pp. 1389-1399 ◽  
Author(s):  
R. Hema Krishna ◽  
A. V. V. S. Swamy
Keyword(s):  
Particle Size ◽  
Aqueous Solutions ◽  
Metal Ion ◽  
Low Cost ◽  
Ion Concentration ◽  
Isotherm Models ◽  
Batch Tests ◽  
Freundlich Adsorption Isotherm ◽  
Equilibrium Data ◽  
Agitation Time

The powder of mosambi fruit peelings (PMFP) was used as an adsorbent for the removal of heavy metal like Cr (VI) from aqueous solutions was studied using batch tests. The influence of physico-chemical key parameters such as the initial metal ion concentration, pH, agitation time, adsorbent dosage, and the particle size of adsorbent has been considered in batch tests. Sorbent ability to adsorb Cr (VI) ions was examined and the mechanism involved in the process investigated. The optimum results were determined at an initial metal ion concentration was 10 mg/lit, pH=2, agitation time – 60 min, an adsorbent dose (150 mg/50 ml) and the particle size (0.6 mm). The % adsorption, Langmuir constants [Q0=7.51(mg/g) and b=1.69(mg/lit)] Freundlich constant(Kf=2.94), Lagergren rate constants (Kad(min-1)=5.75 x 10-2) for [Cr(VI)] 10 mg/lit were determined for the adsorption system as a function of sorbate concentration. The equilibrium data obtained were tested using Langmuir, Freundlich adsorption isotherm models, and the kinetic data obtained were fitted to pseudo first order model.

scholarly journals Sorption of Pb(II) and Cu(II) by low-cost magnetic eggshells-Fe3O4 powder

2012 ◽  
Vol 18 (2) ◽  
pp. 221-231 ◽  
Author(s):  
Jianwei Ren ◽  
Mokgadi Bopape ◽  
Katlego Setshedi ◽  
Jacob Kitinya ◽  
Maurice Onyango
Keyword(s):  
Metal Ions ◽  
Ph Value ◽  
Low Cost ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Solution Ph ◽  
Freundlich Adsorption Isotherm ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Media Interaction

This study explored the feasibility of using magnetic eggshell-Fe3O4 powder as adsorbent for the removal of Pb(II) and Cu(II) ions from aqueous solution. The metal ionsadsorption media interaction was characterized using XRD and FTIR. The effects of contact time, initial concentrations, temperature, solution pH and reusability of the adsorption media were investigated. The metal ions adsorption was fast and the amount of metal ions adsorbed increased with an increase in temperature, suggesting an endothermic adsorption. The kinetic data showed that the adsorption process followed the pseudo-second-order kinetic model. The optimal adsorption pH value was around 5.5 at which condition the equilibrium capacity was 263.2 mg/g for Pb(II) and 250.0 for Cu(II). The adsorption equilibrium data fitted very well to the Langmuir and Freundlich adsorption isotherm models. The thermodynamics of Pb(II) and Cu(II) adsorption onto the magnetic eggshell-Fe3O4 powder indicated that the adsorption was spontaneous. The reusability study has proven that magnetic eggshell-Fe3O4 powder can be employed as a low-cost and easy to separate adsorbent.

scholarly journals EVALUATION OF PHYSICOCHEMICAL CHARACTERISTICS OF GOMTI RIVER WATER AT UTTAR PRADESH, INDIA.

2016 ◽  
Vol 4 (12) ◽  
pp. 1408-1414
Author(s):  
Hafizurrahman A ◽  
◽  
Abrar Ahmad ◽  
MohdMabood Khan ◽  
Zulfiqar Ali ◽  
...  
Keyword(s):  
River Water ◽  
Uttar Pradesh ◽  
Physicochemical Characteristics ◽  
Gomti River

scholarly journals Solar Desalination Technology: Physicochemical Parameters Estimation of Contaminated & Treated Water of Gomti River, Lucknow (U.P.), India

2020 ◽  
Vol 8 (6) ◽  
pp. 686-692
Keyword(s):  
Physicochemical Parameters ◽  
Uttar Pradesh ◽  
Parameters Estimation ◽  
World Health ◽  
Total Hardness ◽  
Distilled Water ◽  
Solar Still ◽  
Gomti River ◽  
Solar Distillation ◽  
Health Organization

In the present research article, physicochemical parameters of raw and distilled water of the Gomti River are estimated and compared with standards of drinking water quality by using a modified double slope solar distillation unit. The raw water as five different samples collected from different locations of Gomti River (Lucknow, Uttar Pradesh, India) was treated. Total number of 16 physiological and biochemical characteristics and parameters of raw and distilled water are estimated such as electrical conductivity (3.62 ± 0.176 to 3.21 ± 0.52), TDS (837 ± 49.65 to 682 ± 15.73), pH (8.7 ± 0.18 to 8.9 ± 0.50), alkalinity (223 ± 9.23 to 215 ± 3.36), total hardness (347 ± 19.82 to 313 ± 11.2), DO (5.79 ± 0.36 to 3.29 ± 0.67), chloride (104 ± 3.4 to 108 ± 4.9), nitrate (7.21 ± 0.29 to 7.93 ± 0.83), BOD (3.27 ± 0.79 to 2.24 ± 0.27), TSS (403.27 ± 0.19 to 214.07 ± 0.32), COD (39.56 ± 0.76 to 33.2 9± 0.17), sulphate (452 ± 0.63 to 321 ± 1.67) and Ecoliform (3100 ± 3.93 to 2750 ± 2.45) which were within the range of World Health Organization & Bureau of Indian Standers approved standards. It is observed that this fabricated modified double slope solar still is producing drinkable water as per the requirement for solving the water scarcity problems in especially coastal & arid areas due to shortage of electricity. Experimental results show that solar still is producing 8-9 liters in the summer & 4-5 liters in the winter seasons.

Adsorption and removal of arsenic from water by iron ore mining waste

2009 ◽  
Vol 60 (9) ◽  
pp. 2301-2308 ◽  
Author(s):  
Tien Vinh Nguyen ◽  
Thi Van Trang Nguyen ◽  
Tuan Linh Pham ◽  
Saravanamuth Vigneswaran ◽  
Huu Hao Ngo ◽  
...  
Keyword(s):  
Iron Ore ◽  
Low Cost ◽  
Arsenic Concentration ◽  
Cost Effective ◽  
Treatment System ◽  
Household Water ◽  
New Material ◽  
Individual Household ◽  
Removal Of Arsenic ◽  
Iron Manganese

There is a global need to develop low-cost technologies to remove arsenic from water for individual household water supply. In this study, a purified and enriched waste material (treated magnetite waste, TMW) from the Trai Cau's iron ore mine in the Thai Nguyen Province in Vietnam was examined for its capacity to remove arsenic. The treatment system was packed with TMW that consisted of 75% of ferrous-ferric oxide (Fe3O4) and had a large surface area of 89.7 m2/g. The experiments were conducted at a filtration rate of 0.05 m/h to treat groundwater with an arsenic concentration of 380 μg/L and iron, manganese and phosphate concentrations of 2.07 mg/L, 0.093 mg/L and 1.6 mg/L respectively. The batch experimental results show that this new material was able to absorb up to 0.74 mg arsenic/g. The results also indicated that the treatment system removed more than 90% arsenic giving an effluent with an arsenic concentration of less than 30 μg/L while achieving a removal efficiency of about 80% for Mn2 +  and PO43−. This could be a promising and cost-effective new material for capturing arsenic as well as other metals from groundwater.

Removal of Arsenic from Landfill Leachate by Selected Low-Cost Sorbents: An Experimental Study at the Zixiaguan Landfill of Wuhan City, Central China

2011 ◽  
Vol 356-360 ◽  
pp. 1427-1432
Author(s):  
Zhi Yan Lu ◽  
Qing Hai Guo
Keyword(s):  
Arsenic Removal ◽  
Removal Rate ◽  
Low Cost ◽  
Arsenic Concentration ◽  
Silty Sand ◽  
Central China ◽  
Wuhan City ◽  
Sorption Model ◽  
Silty Soil ◽  
Removal Of Arsenic

The leachate from the Zixiaguan landfill of Wuhan City contains a lot of undesirable or toxic chemicals, among which arsenic may have the most serious threat to environment and human health. Lowering the arsenic concentration in the leachate is therefore of extreme importance. In this study, natural sediments obtained from Wuhan City, including clay, silty soil and silty sand, were used as low-cost sorbents to remove arsenic from solution. The results of the batch sorption experiments indicate that the sorption processes of clay and silty sand match well with linear isothermal sorption model, while that of silty soil is in good accordance with Langmuir isothermal sorption model. Among the three sorbents, clay has the best ability for arsenic removal from solution. Further experiments were carried out to determine the optimum sorption conditions for clay sorbent, the results showing that as the ratio of sorbent dosage to solution volume is 25.0 g/L, the reaction time is 120 min, and the pH of solution equals 7.0, the removal rate of arsenic from the leachate by clay sorbent reaches the highest value of 99.3 %.

scholarly journals THE PERFORMANCE OF A SINGLE SLOP SOLAR DISTILLER WHEN USING A TWO REFLECTOR

2021 ◽  
Vol 03 (03) ◽  
pp. 10-17
Author(s):  
Yaseen. H. MAHMOOD ◽  
Abeer Ibrahim ASHAWI
Keyword(s):  
Drinking Water ◽  
Solar Energy ◽  
River Water ◽  
Salt Water ◽  
Low Cost ◽  
Safe Drinking Water ◽  
Solar Distillation ◽  
The Impact

The lack of safe drinking water is a major problem in many areas. Most of which located within the range of high solar sun and the enormous potential of solar energy can be exploited to turn salt water into drinking water. The most economical and easy way to achieve this goal is to use solar distillation. Two low-cost "Single Slope" solar distillers were designed to examine the impact of adding concentrates and reflectors on daily yield and efficiency and then compare the results. Results obtained from practical experiments have shown that solar distillers with internal and external reflectors made of mirrors have increased in efficiency by 6% and 12% when one liter and two liters of river water are added, respectively, from the distiller under the effect of the parabola concentrator. The daily yield was also (60 and 240) ml higher for the solar distiller, which contained both internal and external reflectors.

scholarly journals Fabrication and Preliminary Assessment of Fixed Adsorption Column for Arsenic (As) Removal Using Local Rice Husk

2020 ◽  
Vol 18 (02) ◽  
pp. 21-82
Author(s):  
Abdul Qudoos ◽  
Sikandar ALMANI ◽  
Kashif Hussain Mangi ◽  
Memoona Hafeez ◽  
Syed Farman Ali Shah
Keyword(s):  
Removal Efficiency ◽  
Residence Time ◽  
Rice Husk ◽  
Low Cost ◽  
Arsenic Concentration ◽  
Environmental Parameters ◽  
Poor Countries ◽  
Adsorption Column ◽  
Before And After ◽  
Removal Of Arsenic

Arsenic (As) being a carcinogenic element present in drinking water in the less developed areas in the deprived countries contributes to many infectious diseases. The removal of arsenic traces from water needs to have an easy and efficient way for poor countries. Concerning this, a low-cost bio-adsorbent from Rice husk is prepared to remove arsenic from groundwater. Preparation of the absorbent is performed by crushing, sieving, washing and drying the rice husk. The Arsenic present in groundwater samples before and after treatment were tested by Arsenic kit. Batch experiments were carried out with ten contaminated samples of groundwater from Indus river origin area (Nasarpur) to investigate the influence of operating parameters such as adsorbent bed height (ABH) and initial arsenic concentration and residence time(TR) on As removal efficiency using locally fabricated adsorption column. Environmental parameters such as pH, temperature, TDS, and EC were also determined. It was observed that the highest optimized removal efficiency of 90% was achieved at ABH 30 cm: residence time, 60 minutes for feed arsenic concentration of 80 ppb samples. These results suggest that this bio-adsorbent can provide an easy, efficient, and economical method for removing As ions from effluents and water resources.

scholarly journals Removal of Cadmium Ions from Aqueous Solutions Using Flax Seeds as an Adsorbent

2019 ◽  
Vol 12 (4) ◽  
pp. 1-8
Author(s):  
Nidaa Adil Jasim ◽  
Tamara Kawther Hussein
Keyword(s):  
Particle Size ◽  
Adsorption Isotherm ◽  
Low Cost ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Isotherm Models ◽  
Adsorption Parameters ◽  
Adsorption Removal ◽  
Freundlich Adsorption Isotherm ◽  
Flax Seeds

Removal of Cd(II) from  aqueous solution through adsorption using flax seeds was studied. Adsorption parameters such as pH, adsorbent particle size, adsorbent dosages, and initial concentrations of metal ions were studied. All experiments were conducted at room temperature. Langmuir and Freundlich adsorption isotherm models were applied to describe the quantitative uptake of Cd(II) ions by adsorbent. The results show that the maximum adsorption removal reach to 77 %   for Cd (II) onto flax seeds, at optimum operating conditions: pH of 5, particle size of 75µm, adsorbent dosage of 2 g/100 ml and metal concentration of  5 mg/L . The equilibrium adsorption data for Cd(II) were better fitted to  Freundlich adsorption isotherm model than Langmuir. The study concludes that the use of flax seeds as an economic and locally adsorbent for removing Cd(II) from polluted solution is effective. Thus offering a low cost material show potential use it to remove heavy metals.

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