scholarly journals Biodegradation of P-nitro phenol using a novel bacterium Achromobacter denitrifacians isolated from industrial effluent water

2021 ◽  
Author(s):  
Sreeja Mole S. S ◽  
D. S. Vijayan ◽  
M. Anand ◽  
M. Ajona ◽  
T. Jarin
Keyword(s):  
Industrial Wastewater ◽  
Metal Ion ◽  
Inorganic Nitrogen ◽  
Carbon Sources ◽  
Industrial Effluent ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Phenol Removal ◽  
Effluent Water ◽  
Phenol Biodegradation

Abstract In the present investigation, Achromobacter denitrifacians was isolated from industrial wastewater and used in the degradation of para nitro-phenol. Experiments were made as a function of different carbon sources, organic and inorganic nitrogen sources and metal ions to analyse the removal efficiency of para nitro-phenol present in the industrial wastewater sources. Observations revealed that the rate of phenol biodegradation was significantly affected by pH, temperature of incubation, glucose, peptone and metal ion concentration. The optimal conditions for phenol removal was found to be pH of 7.5, temperature, 35 °C and 0.25 gL−1 supplemented glucose level, 0.25 gL−1 supplemented peptone level, and 0.01 gL−1 zinc ion. The key importance of the present study is the utilization of native bacterial strain isolated from the industrial effluent water itself having an impending role in the bioremediation process of phenol.

scholarly journals Removal of Zinc ions from industrial wastewater with wool fibers

2010 ◽  
Vol 7 (3) ◽  
pp. 1193-1201
Author(s):  
Baghdad Science Journal
Keyword(s):  
Acid Concentration ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Metal Ion ◽  
Low Cost ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Natural Material ◽  
Zinc Ions ◽  
Wool Fibers

In this research, the efficiency of low-cost unmodified wool fibers were used to remove zinc ion from industrial wastewater. Removal of zinc ion was achieved at 99.52% by using simple wool column. The experiment was carried out under varying conditions of (2h) contact time, metal ion concentration (50mg/l), wool fibers quantity to treated water (70g/l), pH(7) & acid concentration (0.05M). The aim of this method is to use a high sensitive, available & cheep natural material which applied successfully for industrial wastewater& synthetic water, where zinc ion concentration was reduced from (14.6mg/l) to (0.07mg/l) & consequently the hazardous effect of contamination was minimized.

Effect of Conventional Carbon Sources on Phenol Degradation by Bacillus sp. CDQ

2013 ◽  
Vol 726-731 ◽  
pp. 301-304 ◽  
Author(s):  
Xi Pu He ◽  
Jie Liu ◽  
Hong Jie Liu ◽  
Sen Sheng Wang ◽  
Wen Hui Xu ◽  
...  
Keyword(s):  
Glucose Concentration ◽  
Sodium Acetate ◽  
Removal Rate ◽  
Phenol Degradation ◽  
Carbon Sources ◽  
Phenol Removal ◽  
Biodegradation Rate ◽  
Phenol Biodegradation ◽  
Noticeable Improvement

The influence on the growth and phenol biodegradation ofBacillussp. CDQ by three different conventional carbon sources were investigated. The results indicated that conventional carbon sources certainly affected the growth of strain CDQ and the biodegradation of phenol. Under the concentration of 1.5 to 3 g L-1, contrasting to the comparison, glucose improved the growth of theBacillussp. CDQ but inhibited the phenol biodegradation byBacillussp. CDQ. And the effect of inhibition increased with increasing glucose concentration. Below 1.5 g L-1, the rate of phenol removal increased with the amount of glucose added. Phenol biodegradation rate obviously decreased in the presence of sodium acetate. Lactose can significantly improve the rate of phenol biodegradation. However, no noticeable improvement on the removal rate of phenol was observed under different concentrations of lactose.

scholarly journals Utilization of Activated Carbon Prepared from Industrial Solid Waste for the Removal of Chromium(VI) Ions from Synthetic Solution and Industrial Effluent

2005 ◽  
Vol 23 (2) ◽  
pp. 145-160 ◽  
Author(s):  
N. Vennilamani ◽  
K. Kadirvelu ◽  
Y. Sameena ◽  
S. Pattabhi
Keyword(s):  
Activated Carbon ◽  
Metal Ion ◽  
Industrial Effluent ◽  
Carbon Adsorbent ◽  
Freundlich Isotherm ◽  
Ion Concentration ◽  
Isotherm Models ◽  
Adsorption Sites ◽  
Chromium Vi ◽  
Sago Waste

Activated carbon (AC) prepared from sago waste was characterized and used to remove chromium(VI) ions from aqueous solution and industrial effluent by adsorption methods using various conditions of agitation time, metal ion concentration, adsorbent dosage particle size and pH. Surface modification of the carbon adsorbent with a strong oxidizing agent like concentrated H2SO4 generates more active adsorption sites on the solid surface and pores for metal ion adsorption. Adsorption of the metal ion required a very short time and led to quantitative removal. Both the Langmuir and Freundlich isotherm models could describe the adsorption data. The calculated values of Q0 and b were 5.78 mg/g and 1.75 1/min, respectively. An effective adsorption capacity was noted for particle sizes in the range 125–250 μm at room temperature (30 ± 2°C) and an initial pH of 2.0 ± 0.2. The specific surface area of the activated carbon was determined and its properties studied by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FT-IR). These studies revealed that AC prepared from sago waste is suitable for the removal of Cr(VI) ions from both synthetic and industrial effluents.

scholarly journals Schiff Base Anchored with Silver Nanoparticles as Effective Adsorbent for Removal of Cadmium(II) Heavy Metal from Industrial Wastewater

2020 ◽  
Vol 32 (8) ◽  
pp. 1941-1946
Author(s):  
Preeti Sharma ◽  
Vedula Uma
Keyword(s):  
Silver Nanoparticles ◽  
Schiff Base ◽  
Contact Time ◽  
Industrial Wastewater ◽  
Metal Ion ◽  
Solid Phase ◽  
Chemical Reduction ◽  
Ion Concentration ◽  
Spectral Studies ◽  
Experimental Conditions

The current study deals with the examination of the capacity of Schiff base anchored with silver nanoparticles for removal of cadmium(II) ions from industrial wastewater. Schiff base was synthesized using refluxing of salicylaldehyde and 4-aminoantipyrine in alcoholic medium. The characterization of Schiff base were studied by elemental analysis, FTIR, NMR, UV-visible and mass spectral studies. The silver nanoparticles were synthesized using the chemical reduction method and characterized. Then, silver nanoparticles anchored to the Schiff base by suitable method and again characterized. Peanut shells were used as solid phase for removal of Cd(II) ions. The effects of several parameters to optimize the adsorption of Cd(II) ions on solid phase, including pH, contact time, initial metal ion concentration and adsorbent weight were investigated. The maximum removal efficiency of Cd(II) ions on solid phase using Ag nano@Schiff base was achieved under experimental conditions of pH 6 (% removal = 81%), contact time of 15 min (% removal = 93%), initial metal ion concentration of 0.5 ppm (% removal = 95%) and adsorbent weight of 3 mg (% removal = 89%). The results showed that extraction of Cd2+ on AgNPs@Schiff base follows Freundlich adsorption isotherm.

Removal of Iron, Manganese and Boron from Industrial Effluent Water Using Carbon Nanofibers

2015 ◽  
Vol 1109 ◽  
pp. 158-162
Author(s):  
Norli Abdullah ◽  
Imran Syakir Mohamad ◽  
Sharifah Bee Abd Hamid
Keyword(s):  
Activated Carbon ◽  
Metal Ions ◽  
Carbon Nanofibers ◽  
Metal Ion ◽  
Industrial Effluent ◽  
Carbon Surface ◽  
Effluent Water ◽  
Manganese Ion ◽  
Boron Ions ◽  
Iron Manganese

Carbon based materials are widely used as an absorbent to study the adsorption capacity of several metal ions (Fe, Mn, B) from industrial effluent water. In this project, three types of carbon materials were selected; (1) activated carbon (AC), (2) Carbon nanofibers supported on activated carbon (CNF-AC) and (3) commercial carbon nanofibers (CNF-C). CNF-AC is physically in the form of nanofibers which directly attached onto activated carbon surface, meanwhile CNF-C is un-attached/loose nanofibers. It was found that pH of effluent water and the type of adsorbent play important roles for adsorption of metal ions. The higher adsorption of iron ions was observed when the pH of effluent water adjusted to pH 6 with an adsorbent capacity order is CNF-AC>CNF-C>AC. Furthermore, the adsorption order for manganese ion represent as AC>CNF-AC>CNF-C. Different behavior was observed for boron ions which show higher adsorption at pH 4 with the affinities order is CNF-AC>CNF-C>AC. The results show that CNF-AC has a potential to be used as effective adsorbent for removal of metal ion from industrial effluent water for environment protection.

scholarly journals Removal of chromium and Iron using mixed adsorbent for synthetic and industrial samples in a continuous column reactor

YMER Digital ◽  
2022 ◽  
Vol 21 (01) ◽  
pp. 98-111
Author(s):  
Dr. Srinivas Tadepalli ◽  
◽  
Dr. K.S.R Murthy ◽  
Dr. P Suresh Kumar ◽  
Dr. Prasanthi Kumari Nunna ◽  
...  
Keyword(s):  
Metal Ion ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Fixed Bed ◽  
Industrial Effluent ◽  
Ion Concentration ◽  
Flow Rates ◽  
Saturation Time ◽  
Bed Height ◽  
Synthetic Solution

he results of the experiments showed that bed weight, flow rate, and initial metal ion concentration all play a role in the removal of Cr (III) and Fe (II). The optimized break through curve was obtained at 36cm bed height and 10ml/min for chromium where 97.5 to 100% removal was observed at a saturation time of 500-600 min. With the increase in bed height from 12cm to 36cm, both the breakthrough and saturation times for Cr (III) increased. The break through time at 12cm, 24cm, 36cm and 10ml/min for Cr (III) were 70 min, 105 min, and 35 min respectively. The saturation time for Cr (III) at 12cm, 24cm, 36cm and 10ml/min were 460 min, 490 min, and 500 min respectively. Similarly, the break through time for Fe (II) at 12cm, 24cm, 36cm and 10ml/min were 70 min, 80 min, and 100 min respectively. At 12cm, 24cm, 36cm, and 10ml/min, the saturation time for Fe (III) was 340 minutes, 360 minutes, and 430 minutes, respectively. Overall in the column performance comparison between synthetic solution and industrial effluents for chromium, synthetic solution performance was more superior at fixed volumetric flow rates of 10 ml/min and bed heights ranging from 12 cm to 36 cm But the reverse trend was observed in case of fixed bed heights of 36 cm (150 g) and variation of volumetric flow rates from 10ml/min to 30ml/min which indicates that industrial effluent performance was superior when compared to synthetic solution for heavy metal removal.

Removal and Recovery of Cr(VI) from Synthetic and Industrial Wastewater using Bark of Pinus roxburghii as an Adsorbent

2005 ◽  
Vol 40 (4) ◽  
pp. 462-468 ◽  
Author(s):  
Rais Ahmad ◽  
Rifaqat Ali Khan Rao ◽  
Mir Mohammad Masood
Keyword(s):  
Contact Time ◽  
Industrial Wastewater ◽  
Metal Ion ◽  
Freundlich Isotherm ◽  
Batch Process ◽  
Ion Concentration ◽  
Solution Ph ◽  
Pinus Roxburghii ◽  
Column Operation ◽  
Removal And Recovery

Abstract In the present study, the potential of Pinus roxburghii bark as an adsorbent for the removal of heavy metals such as Cr(VI), Ni(II), Cu(II), Cd(II) and Zn(II) from aqueous solution at ambient temperature was investigated. Adsorption capacity of the material was found to be 4.15, 3.89, 3.81, 3.53 and 3.01 mg g-1 for Cr(VI), Zn(II), Cu(II), Ni(II) and Cd(II), respectively, at an initial metal ion concentration of 50 mg L-1 at pH 6.5. The effect of concentration, contact time, adsorbent dose, solution pH, adsorbent particle size, salinity and hardness on the adsorption of Cr(VI) were studied in detail in batch experiments. The equilibrium contact time for Cr(VI) adsorption was found to be 1 h. Adsorption equilibrium data fit well to the Freundlich isotherm in the concentration range studied. The maximum adsorption (96.2%) was recorded at pH 3 for the initial Cr(VI) concentration of 50 mg L-1. The adsorbed metal ions from industrial wastewater were recovered using 0.1 M HCl solution. The column operation was found to be more effective compared to batch process. The percent recovery of Cr(VI) from industrial wastewater by column operation and batch process was found to be 85.8 and 65%, respectively. The results show that Pinus roxburghii bark can be used as a cost-effective adsorbent for the removal and recovery of Cr(VI) from wastewater.

scholarly journals STUDI SERAPAN ION SENG(II) OLEH BIOMASSA MIKROALGA (Tetraselmis chuii)

2015 ◽  
Vol 2 (2) ◽  
pp. 107
Author(s):  
Bahrizal ◽  
Rahadian Z
Keyword(s):  
Metal Ion ◽  
Absorption Spectrometry ◽  
Zinc Ion ◽  
Ion Concentration ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Tetraselmis Chuii ◽  
Optimum Ph ◽  
The Difference ◽  
Varied Concentration

ABSTRACT In the present work, the process of zinc-ion adsorption by T. chuii biomass have been investigated. This investigation intend to determinate capacity of adsorption the biomass for zinc-ion in water. A weight of 100 mg biomass was put into 6 ppm of the metal-ion solution whose pH varied from 5.0 to 7.0. Then, these solutions were stirred for 30 minutes. After filtering, the metal-ion concentration in the filtrate was determined by atomic absorption spectrometry. The amount of ion adsorbed by the biomass was taken as the difference between the initial and final concentration of the solution. Further, the same method was carried out to the varied concentration. The result showed, the optimum pH for metal-ion adsorption by the biomass is 5.5, having adsorption value 1.106 mg/g. Capacity of zinc-ion adsorption was obtained by varied concentration, yielded value of 3.557 mg/g.   Keywords : T. chuii, biomass, adsorption, spectrometry   

Reclamation of Hexavalent Chromium from Electroplating Effluents by Electroextraction

2020 ◽  
Vol 20 (10) ◽  
pp. 6547-6554
Author(s):  
M. Revathi ◽  
G. Sivagaami Sundari ◽  
C. Ahmed Basha ◽  
Manawwer Alam ◽  
Suresh Sagadevan ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Continuous Flow ◽  
Metal Ion ◽  
Industrial Effluent ◽  
Ion Concentration ◽  
Treated Wastewater ◽  
Flow Mode ◽  
Experimental Conditions ◽  
Flow Process ◽  
Electrochemical Ion Exchange

This investigation aims at the reclamation of Cr(VI) from synthetic electroplating industrial effluent by electroextraction process namely electrochemical ion exchange (EIX). An electrochemical ion exchange reactor of desired dimensions was fabricated with the help of ion-permeable membranes, stainless steel cathode and PbO2 coated Ti expanded mesh anode. The performance of the reactor was studied in batch recirculation mode, continuous flow mode at different experimental conditions. The influence of various experimental factors, for instance, initial metal ion concentration (20, 300, 1000 mg/L of Cr(VI)), applied voltages (2.5 V, 5 V, 7.5 V, 10 V) and flow rates of the process stream (2, 4, 6, 8, 10, 12 and 14 ml/min) on removal/reclamation efficiency was deliberated. For comparison purposes, an electrodialysis process was conducted at the same optimal conditions. It was found that the EIX process with three compartments has more removal efficiency at optimum experimental conditions than the electrodialysis process. The continuous flow process of the reactor with 300 mg/L of Cr(VI) as inlet concentration has studied to predict the breakeven point of the reactor. It was noted that Cr(VI) ion concentration in the treated wastewater is almost zero up to the discharge of 20 liters of treated rinse water.

scholarly journals AN ALTERNATIVE APPROACH ON BIOREMEDIATION OF HEAVY METALS IN TANNERY EFFLUENTS WASTE USING STREPTOMYCES SP.

2017 ◽  
Vol 10 (10) ◽  
pp. 323
Author(s):  
Thirumurugan D ◽  
Ibrahim Adamu Karfi ◽  
Vijayakumar R ◽  
Nithya Tg
Keyword(s):  
Heavy Metals ◽  
Incubation Period ◽  
Metal Ion ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Ion Concentration ◽  
Effluent Treatment ◽  
Tannery Effluent ◽  
Streptomyces Sp ◽  
Reducing Ability

  Objective: The present study is conducted to investigate the abilities of microorganisms to degrade heavy metals in industrial tannery effluent sample.Methods: Tannery effluent sample was collected from effluent treatment plant and analyzed for physicochemical parameters. The potential microbes were isolated and identified by morphological and biochemical characterization. The sample was analyzed before and after to assess the heavy metal reducing the ability of the microorganism and the respective percentage of reduction were studied using X-ray fluorescence spectrometry.Results: The samples were initially found to be highly contaminated with chromium, nickel, and cadmium. Out of three potential isolates, the isolate Streptomyces sp. was found to exhibit a better reduction against chromium (25.7%), cadmium (14.6%), and nickel (23.1%) in 50 ppm at longer incubation period. Comparatively, the reduction abilities of all the three isolates against all the three heavy metals increased with the increase in the incubation period but decreased with the increase in initial metal ion concentration except in the case of Streptomyces sp. against nickel where the reducing ability increased with the increase in metal concentration.Conclusion: Apparently, the present study revealed that Streptomyces sp. had a better remediation potential than the indigenous Pseudomonas sp. and Aspergillus sp. Ultimately, the finding of this research has shown that the Streptomyces sp. can be used as a potent bioremediation agent for treating tannery and industrial effluent in an eco-friendly process.

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