Usage of Cicer Arietinum as a local and eco-friendly natural coagulant in sewage treatment and its ability to increase the formation of floc process.

Bionatura ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 1939-1943
Author(s):  
Amera Marey Mohammed Hassanien (A.Marey)
Keyword(s):  
Human Health ◽  
Cicer Arietinum ◽  
Contact Time ◽  
Sewage Treatment ◽  
Sewage Water ◽  
Agitation Speed ◽  
Natural Coagulant ◽  
Rapid Mixing

Cicer Arietinum (CA) or chickpea seeds were used as a local natural coagulant, cheap and cultivable which available in Egypt that can be used to reduce turbidity from wastewater, especially sewage water instead of chemical coagulant that causes different diseases like intestinal constipation, loss of memory, convulsions, so this paper represents the use of chickpea as a natural coagulant and eco-friendly in the environment because it assumed to be safe for the human health and efficient in sewage treatment 6, So the researchers advices now to use natural coagulant as coagulant aids which has a higher ability to raise the consistency of floc and prevent of the coagulation operation. The optimum removal conditions that applied on the research were temperature =250C, pH= 3, Contact time=120 min, agitation speed for 2 minutes =80 rpm (rapid mixing), (CA) dosage is 90 mg/L, and (95.89%) turbidity reduction was achieved on the studied area.

Removal of Methylene Blue and Orange-G from Waste Water Using Magnetic Biochar

2015 ◽  
Vol 14 (04) ◽  
pp. 1550009 ◽  
Author(s):  
N. M. Mubarak ◽  
Y. T. Fo ◽  
Hikmat Said Al-Salim ◽  
J. N. Sahu ◽  
E. C. Abdullah ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Contact Time ◽  
Agitation Speed ◽  
Adsorption Kinetic ◽  
Maximum Adsorption Capacity ◽  
Optimum Conditions ◽  
Magnetic Biochar ◽  
Design Expert ◽  
Orange G ◽  
Pseudo Second Order

The study on the removal of methylene blue (MB) and orange-G dyes using magnetic biochar derived from the empty fruit bunch (EFB) was carried out. Process parameters such as pH, adsorbent dosage, agitation speed and contact time were optimized using Design-Expert Software v.6.0.8. The statistical analysis reveals that the optimum conditions for the maximum adsorption of MB are at pH 2 and pH 10, dosage 1.0 g, and agitation speed and contact time of 125 rpm and 120 min respectively. While for orange-G, at pH 2, dosage 1.0 g, and agitation speed and contact time of 125 rpm and 120 min respectively. The maximum adsorption capacity of 31.25 mg/g and 32.36 mg/g for MB and orange-G respectively. The adsorption kinetic for both dyes obeyed pseudo-second order.

scholarly journals Coagulant potentials of Moringa oleifera seeds in water purification

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
R. V. Thorat ◽  
D. A. Malvekar ◽  
A. U. Sutar
Keyword(s):  
Water Sample ◽  
River Water ◽  
Water Purification ◽  
Water Samples ◽  
Moringa Oleifera ◽  
Sewage Water ◽  
Chemical Parameters ◽  
Natural Coagulant ◽  
Physico Chemical ◽  
Almost All

The main objective of this study is to confirm the potentials of Moringa oleifera seeds over alum for water purification. Various doses of Moringa seed powder 4, 8, 12 g/l were taken and checked for treatment of river and sewage water. After treatment of seed powder with water samples were analyzed for physico-chemical parameters like pH, Absorbance, TDS, TSS, Hardness, Chlorides, Conductivity, Turbidity, MPN and DO. Almost all parameters showed reduction with increasing dosage of Moringa seed powder. Similar doses of alum were checked with river water sample and were analyzed for above mentioned parameters. The results obtained showed that seed powder (natural coagulant) is more effective than conventional chemical coagulant., alum. The seed of Moringa oleifera is cheap, eco-friendly and non-toxic, can be effectively used as a coagulant for river and sewage water purification.

scholarly journals Biosorption of lead ions by exopolysaccharide producing Azotobacter sp.

2021 ◽  
Vol 42 (1) ◽  
pp. 40-50
Author(s):  
P. Dhevagi ◽  
◽  
S. Priyatharshini ◽  
A. Ramya ◽  
M. Sudhakaran ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Response Surface ◽  
Functional Groups ◽  
Contact Time ◽  
Sewage Water ◽  
Energy Dispersive ◽  
X Ray ◽  
Scanning Electron

Aim: Removal of lead from wastewater using Azotobacter species and optimisation of various parameters to maximise the adsorption of lead by response surface methodology as a tool. Methodology: The bacterial isolate UBI-7 recovered from sewage water irrigated soil was examined for its biosorption potential towards lead. The lead removal efficiency of Azotobacter salinestris was studied with respect to metal concentration (50-250 mg l-1), contact time (24-120 hrs), and pH (4-8).Using response surface methodology, these factors were optimized and R2 value obtained was 0.9710 for lead ions, which indicates the validity of the model. Observation with Fourier Transform Infrared (FTIR), Scanning Electron Microscope imaging (SEM) and Energy Dispersive X-ray Spectroscopic analysis (EDX) were carried out to confirm lead biosorption by Azotobacter salinestris. Results: The lead tolerant bacterium isolated from sewage water irrigated soil (UBI-7) was recognized as Azotobacter salinestris by 16S rRNA based gene sequence analysis. The highest removal percentage of Pb (61.54) was 50 mg l-1 in 72 hrs equilibration period. Interaction effect between different levels of Pb and different contact time of the solution were found to be significant. Lead biosorption by the organism was confirmed by the changes in stretching intensities of functional groups as well as appearance of strong OH stretching at 3291.69 cm-1. Images obtained from Scanning Electron Microscope and Energy Dispersive X-ray Spectroscopic studies of the bacteria (UBI-7) before and after biosorption clearly indicated lead adsorption. Interpretation: Current study proves that the functional groups of Azotobacter salinestris are involved in lead biosorption from aqueous solution which was confirmed through FTIR.EDX analysis also elucidated the lead absorption by the bacterial cells. Hence, this could be effectively utilized for decontamination of lead from the polluted environment. Key words: Azotobacter salinestris, Biosorption, Lead, Response surface methodology

scholarly journals The Recycling of Sewage Generated in Kormangla-Chellaghatta Valley of Bengaluru India

2020 ◽  
Vol 3 (2) ◽  
Keyword(s):  
Ground Water ◽  
Sewage Treatment ◽  
Water Shortage ◽  
Sewage Water ◽  
Water Drainage ◽  
Treated Water ◽  
Ground Water Recharge ◽  
Water Recharge ◽  
Agriculture Products ◽  
The City

The water consumption in Bengaluru goes to 1853 Million Liter per Day (MLD) mainly sourced from Kaveri river and borewells and in result to produce abbot 1400 MLD of sewage. About 711 MLD is being treated water out come from 26 Secondary Treatment Plants (STP) against their capacity of 1360 MLD. About 462.9 MLD is recycled for various purposes and remaining 248.5MLD is allowed to flow in Sewage Water Drainage or in lakes allowed to mix with the sewage, making practically no use. The Bangalore Water Supply and Sewerage Board (BWSSB) has about 6 STPs in place for a capacity of 453.5 MLD in the Kormangla-Chelghatta valley (K&C Valley) catchment area. One of the best-known sewage recycling in present day in the country is 440 MLD Kormangla-Chelghatta valley project for drought prone Kolar and Chickballapur districts in Karnataka, India to reuse of treated water for ground water recharge and industries and then to agriculture. About 76 tanks have been filled till this date. From these tanks, treated water is allowed to recharge the ground water and then reused through open wells/ borewells for agriculture/ horticulture. No treated water is directly used from such tanks. The project has facilitated to change the socioeconomic status of the farmers, terrestrial, aquatic and marshy ecosystems of the area. The project is bringing change in symbiotic relations by exerting pressure for more sewage treatment at Bengaluru and in turn vegetables/agriculture products supply to it. It also fulfils the obligation of City to provide nutrient rich treated waste-water for farmers’ irrigation needs under distress conditions that they are facing due to drought and water shortage, who grow food and vegetables and thus ensuring symbiotic livelihood security for the farmers and food security for the city. The author is working as expert member appointed by National Green Tribunal for the rejuvenation of lakes in K&C Valley.

The Project Design of Seasonal Reclaimed Water Utilization System for Liaobin Water Town

2011 ◽  
Vol 243-249 ◽  
pp. 4766-4770
Author(s):  
Ji Ku Zhang ◽  
Yang Jiang ◽  
Lin Zou
Keyword(s):  
Sewage Treatment ◽  
Reclaimed Water ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Water ◽  
Project Design ◽  
Water Utilization ◽  
Reuse System ◽  
Sewage Reuse ◽  
Research Analysis

Conbined with the Eco-residential Island, the project of reclaimed water utilization for Liaobin water town in Panjin is mainly introduced. The reclaimed water resource contains rainwater and domestic sewage water, which is collected mainly in the range of urban (regional).After the second-level processing by sewage treatment plant, it is mainly served as flushing water ,which is called “full-sewage” reuse system; in dry season, it is reused directly after corresponding treatment; and in rainy season, the excessive water is pumpinged into the surrounding waterbodies. The research analysis indicates that the plan of “full-sewage” reuse system and the seasonal reclaimed water utilization system used in this area are reasonable and feasible, which can make full use of the reclaimed water and save the water resources effectively, meeting the demand of sustainable development .

Sorption of Acid Blue 9 on to Wheat Bran: Optimization, Equilibrium and Kinetic Studies

2010 ◽  
Vol 5 (1) ◽  
Author(s):  
Rajeshkannan Rajan ◽  
Manivasagan Rajasimman ◽  
Rajamohan Natarajan
Keyword(s):  
Wheat Bran ◽  
Contact Time ◽  
Freundlich Isotherm ◽  
Kinetic Studies ◽  
Agitation Speed ◽  
Initial Substrate ◽  
Pseudo Second Order ◽  
Langmuir And Freundlich Equations ◽  
Acid Blue ◽  
Adsorbent Dose

In this study, the use of wheat bran as a possible adsorbent has been successfully demonstrated in the removal of Acid blue9 (AB9) from aqueous solution. The effect of different parameters such as temperature, adsorbent dose, contact time, adsorbent size and agitation speed were investigated. The optimum conditions obtained from response surface methodology are: temperature-38.1°C, adsorbent dose (3.1g/L), contact time (206 min), adsorbent size 0.1mm (150mesh), and agitation speed (222rpm). The effect of pH and initial substrate concentration were studied. The pseudo-first order and pseudo-second order kinetics were tested. The sorption equilibrium, expressed by the Langmuir and Freundlich equations, indicated that the process was in compliance with Freundlich isotherm.

scholarly journals Study of the performance of disinfection with sodium hypochlorite on a full-scale sewage treatment plant

2020 ◽  
Vol 15 (6) ◽  
pp. 1
Author(s):  
Maria Rosaria Boni ◽  
Sabrina Copelli ◽  
Massimo Raboni
Keyword(s):  
Sodium Hypochlorite ◽  
Retention Time ◽  
Contact Time ◽  
Regression Line ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Full Scale ◽  
Process Efficiency ◽  
Residual Chlorine

A full-scale sewage treatment plant was investigated to assess the performance of the disinfection stage. Sodium hypochlorite was used as a disinfectant agent and the process efficiency was evaluated by E.coli removal. The research took place over a period of two years in order to evaluate the effect of retention time (t) and residual chlorine (Cr) under different seasonal conditions. The effectiveness of E.coli removal with sodium hypochlorite proved to be strictly dependent on the factor CR  t (product of residual chlorine with the contact time). The regression line of the experimental points was, on the whole, well comparable with the model proposed by Collins, especially in the field of CRt lower than 30 mg L-1 min.

scholarly journals Fundamental Research on Effect of Sewage Treatment Process on Biological Impacts against Aquatic Organisms by Sewage Water

2015 ◽  
Vol 51 (4) ◽  
pp. 95-103 ◽  
Author(s):  
FUMIHIKO TAKEDA ◽  
HIROYUKI MANO ◽  
TOMOKAZU KITAMURA ◽  
KOYA KOMORI ◽  
SEIICHIRO OKAMOTO
Keyword(s):  
Treatment Process ◽  
Sewage Treatment ◽  
Aquatic Organisms ◽  
Sewage Water ◽  
Biological Impacts ◽  
Fundamental Research

scholarly journals TETRACYCLINE ANTIBIOTIC REMOVAL FROM AQUEOUS SOLUTION USING CLADOPHORA AND SPIRULINA ALGAE BIOMASS

2021 ◽  
Vol 52 (2) ◽  
pp. 336-347
Author(s):  
I. N. Abd ◽  
M. J. Mohammed-Ridha
Keyword(s):  
Aqueous Solution ◽  
Contact Time ◽  
Large Scale ◽  
Batch Process ◽  
Agitation Speed ◽  
Hydroxyl Group ◽  
Coefficient Of Determination ◽  
Order Kinetic ◽  
Algae Biomass ◽  
Operation Conditions

Cladophora and Spirulina algae biomass have been used for the removal of Tetracycline (TC) antibiotic from aqueous solution. Different operation conditions were varied in batch process, such as initial antibiotic concentration, different biomass dosage and type, contact time, agitation speed, and initial pH. The result showed that the maximum removal efficiencies by using 1.25 g/100 ml Cladophora and 0.5 g/100 ml Spirulina algae biomass were 95% and 94% respectively. At the optimum experimental condition of temperature 25°C, initial TC concentration 50 mg/l, contact time 2.5hr, agitation speed 200 rpm and pH 6.5. The characterization of Cladophora and Spirulina biomass by Fourier transform infrared (FTIR) indicates that the presence of functional groups of different components such as the Hydroxyl group (-OH), amides(N-H stretch) were responsible of surface adsorption processes. The isothermal study has been applied using Freundlich, Temkin, and Langmuir models. The data best fitted with the Langmuir model. Finally, The pseudo-second-order kinetic model was best fitted the kinetic data with a high coefficient of determination (R2< 0.97 and 0.99) when used Cladophora and Spirulina algae biomass, respectively. The study showed that both Cladophora and Spirulina algae were promising and economical biomass that could be used for a large scale bioreactor.

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