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Koivula Risto - One of the best experts on this subject based on the ideXlab platform.

  • Novel electroblowing synthesis of submicron zirconium dioxide fibers : effect of fiber structure on antimony(v) adsorption
    'Royal Society of Chemistry (RSC)', 2019
    Co-Authors: Paajanen Johanna, Lönnrot Satu, Heikkilä Mikko, Meinander Kristoffer, Kemell Marianna, Hatanpää Timo, Ainassaari Kaisu, Ritala Mikko, Koivula Risto
    Abstract:

    Both stable and radioactive antimony are common Industrial pollutants. For antimonate (Sb(v)) removal from Industrial Waste Water, we synthesized submicron zirconium dioxide (ZrO2) fibers by electroblowing and calcination of the as-electroblown fibers. The fibers are amorphous after calcination at 300 and 400 degrees C and their average diameter is 720 nm. The fibers calcined at 500 to 800 degrees C have an average diameter of 570 nm and their crystal structure transforms from tetragonal to monoclinic at the highest calcination temperatures. We investigated Sb(v) adsorption capacity of the synthesized ZrO2 fibers as a function of pH, adsorption isotherm at pH 6 and adsorption kinetics at pH 7. The tetragonal ZrO2 fibers calcined at 500 degrees C exhibited the best potential for Sb(v) remediation with Sb(v) uptake of 10 mg g(-1) at pH 2 and a maximum Sb(v) uptake of 8.6 mg g(-1) in the adsorption isotherm experiment. They also reached 30% of 7 days' Sb(v) uptake in only a minute. The adsorption kinetics followed the Elovich model.Peer reviewe

  • Novel electroblowing synthesis of submicron zirconium dioxide fibers
    'Royal Society of Chemistry (RSC)', 2019
    Co-Authors: Paajanen Johanna, Lönnrot Satu, Heikkilä Mikko, Meinander Kristoffer, Kemell Marianna, Hatanpää Timo, Ainassaari Kaisu, Ritala Mikko, Koivula Risto
    Abstract:

    Both stable and radioactive antimony are common Industrial pollutants. For antimonate (Sb(v)) removal from Industrial Waste Water, we synthesized submicron zirconium dioxide (ZrO2) fibers by electroblowing and calcination of the as-electroblown fibers. The fibers are amorphous after calcination at 300 and 400 °C and their average diameter is 720 nm. The fibers calcined at 500 to 800 °C have an average diameter of 570 nm and their crystal structure transforms from tetragonal to monoclinic at the highest calcination temperatures. We investigated Sb(v) adsorption capacity of the synthesized ZrO2 fibers as a function of pH, adsorption isotherm at pH 6 and adsorption kinetics at pH 7. The tetragonal ZrO2 fibers calcined at 500 °C exhibited the best potential for Sb(v) remediation with Sb(v) uptake of 10 mg g-1 at pH 2 and a maximum Sb(v) uptake of 8.6 mg g-1 in the adsorption isotherm experiment. They also reached 30% of 7 days' Sb(v) uptake in only a minute. The adsorption kinetics followed the Elovich model.Peer reviewe

Ram S. Lokhande - One of the best experts on this subject based on the ideXlab platform.

  • study on physico chemical parameters of Waste Water effluents from taloja Industrial area of mumbai india
    International Journal of Ecosystem, 2012
    Co-Authors: Ram S. Lokhande, Deepali S Pimple
    Abstract:

    The present research work deals with the study of some of the important physico-chemical parameters of Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that engineering, paper mill, fine chemical, dyes, paint, pharmaceutical, petrochemical and textile industries are some of the major industries re- sponsible for polluting the surrounding aquatic environment. It was observed that pH values of effluent samples collected from paint, pharmaceutical and dyes industries were slightly above and below the limit of 6.5 to 8.5 by ISI and WHO. The effluent samples collected from textile industries shows extremely high Total Dissolved Soild (TDS) content of 12023.6 mg/L and correspondingly high Total Solid (TS) content of 13499.2 mg/L. The chloride content in the effluents from textile industries was 238.4 mg/L which was significantly high than acceptable limit of 200 mg/L set by WHO. The BOD values of effluent samples collected from pharmaceutical, dyes, engineering and paint industries were 1047.3, 776.2, 604.8 and 535.8 mg/L respectively which lie above the maximum permitted BOD content of < 100 to 300 mg/L. The COD values in the different Industrial effluent samples were also very much higher than maximum permissible limit of 4.0 mg/L according to USPH Standard. The overall results highlight towards the discharge of highly polluted Waste Water effluent from indus- tries of Taloja Industrial area of Mumbai. These Industrial effluents have resulted in pollution of nearby Kasardi River thereby affecting the growth of vegetation and aquatic life. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treat- ment methods.

  • pollution in Water of kasardi river flowing along taloja Industrial area of mumbai india
    World environment, 2012
    Co-Authors: Ram S. Lokhande, P U Singare, Deepali S Pimple
    Abstract:

    The area of study selected in the present investigation was Kasardi River which receives heavy discharge of Waste effluent from the nearby Taloja Industrial belt which is one of the fastest developing Industrial belt of Mumbai. The study was performed to investigate the concentration of toxic heavy metals like chromium (Cr), cadmium (Cd), nickel (Ni), zinc (Zn), copper (Cu), lead (Pb) and iron (Fe) in river. It was observed that concentration of most of these heavy metals were much higher than the maximum permissible limits. These heavy metals have created threat to the aquatic life and through biomagnifications may enter the food chain thereby affecting the human beings as well. The research work was extended further to study the physico-chemical properties like temperature, pH, solid content, chloride, oil / grease content, BOD and COD values of the river Water. The authors point out that as India moves towards stricter regulation of Industrial effluents to control Water pollution, there is a need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.

  • toxicity study of heavy metals pollutants in Waste Water effluent samples collected from taloja Industrial estate of mumbai india
    Resources and Environment, 2011
    Co-Authors: Ram S. Lokhande, Deepali S Pimple, P U Singare, Munshi Nagar
    Abstract:

    The present research work deals with the assessment of pollution due to toxic heavy metals in the Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that dyes, paints, pharmaceutical and textile industries are some of the major industries contributing to the heavy metal pollutants in the surrounding aquatic environment. It was observed that paint manufacturing industries are the major contributors of toxic Cr, Zn and Pb amounting to 35.2, 33.1, and 31.4 mg/L respectively. It was also observed that major contribution of Cu (33.3 mg/L) was from dyes manufacturing units, while maximum Fe concentration of 12.8 mg/L was found in effluent samples released from textile industries. The concentration of Cd and Ni was found maximum in effluent samples collected from pharmaceutical industries amounting to 35.8 and 33.6 mg/L respectively. The overall results point out high concentration of toxic heavy metals in the effluent samples collected from different industries. These Industrial effluents will pollute the near by Water bodies affecting the growth of vegetation and aquatic life. These toxic heavy metals when released in aquatic environment will enter the food chain through bio-magnification causing various health problems in humans. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.Keywords Industrial Effluent; Industrial Pollution; Toxic Heavy Metals; Quantification; AAS; Health Hazards; Water Pollution; Taloja Industrial Area; Mumbai

  • toxicity study of heavy metals pollutants in Waste Water effluent samples collected from taloja Industrial estate of mumbai india
    Resources and Environment, 2011
    Co-Authors: Ram S. Lokhande, Deepali S Pimple, P U Singare, Munshi Nagar
    Abstract:

    The present research work deals with the assessment of pollution due to toxic heavy metals in the Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that dyes, paints, pharmaceutical and textile industries are some of the major industries contributing to the heavy metal pollutants in the surrounding aquatic environment. It was observed that paint manufacturing industries are the major contributors of toxic Cr, Zn and Pb amounting to 35.2, 33.1, and 31.4 mg/L respectively. It was also observed that major contribution of Cu (33.3 mg/L) was from dyes manufacturing units, while maximum Fe concentration of 12.8 mg/L was found in effluent samples released from textile industries. The concentration of Cd and Ni was found maximum in effluent samples collected from pharmaceutical industries amounting to 35.8 and 33.6 mg/L respectively. The overall results point out high concentration of toxic heavy metals in the effluent samples collected from different industries. These Industrial effluents will pollute the near by Water bodies affecting the growth of vegetation and aquatic life. These toxic heavy metals when released in aquatic environment will enter the food chain through bio-magnification causing various health problems in humans. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.Keywords Industrial Effluent; Industrial Pollution; Toxic Heavy Metals; Quantification; AAS; Health Hazards; Water Pollution; Taloja Industrial Area; Mumbai

  • study of physico chemical quality of the Industrial Waste Water effluent from gove Industrial area of bhiwandi city of maharashtra india
    Interdisciplinary Environmental Review, 2010
    Co-Authors: P U Singare, Ram S. Lokhande, A G Jagtap
    Abstract:

    This paper advocates Water pollution study of Gove Industrial area of Maharashtra, India with special reference to the physico-chemical characteristics of common Industrial Waste Water effluent. The physico-chemical parameters like temperature, pH, solid content, total hardness, chloride content, dissolved oxygen (DO), biological oxygen demand (BOD) and chemical oxygen demand (COD) were studied by collecting samples bimonthly for 12 months. The authors point out that as India moves towards stricter regulation of Industrial effluents to control Water pollution, greater efforts are required to reduce the risk to public health as toxic pollutants which are mainly colourless and odourless are released into the ecosystems.

Pn Tiwari - One of the best experts on this subject based on the ideXlab platform.

  • Removal and recovery of chromium (VI) from Industrial Waste Water
    Journal of Chemical Technology and Biotechnology, 1997
    Co-Authors: Vk Singh, Pn Tiwari
    Abstract:

    Carbon slurry, generated as a Waste material in a naphtha-based ammonia plant of the Fertilizer Corporation of India, Gorakhpur, has been used as an adsorbent for the removal of Cr(VI) from aqueous solution at different experimental conditions. The removal was favoured at low pH, with maximum removal at pH 2.5. The effects of concentration and temperature have also been reported. Batch adsorption kinetics have been described by the Lagergren equation. The applicability of the Langmuir isotherm for the present system has been tested at different temperatures. Thermodynamic parameters indicate the endothermic nature of Cr(VI) adsorption on carbon slurry. Recovery of adsorbed chromium for reuse has also been reported in the present study.

Deepali S Pimple - One of the best experts on this subject based on the ideXlab platform.

  • study on physico chemical parameters of Waste Water effluents from taloja Industrial area of mumbai india
    International Journal of Ecosystem, 2012
    Co-Authors: Ram S. Lokhande, Deepali S Pimple
    Abstract:

    The present research work deals with the study of some of the important physico-chemical parameters of Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that engineering, paper mill, fine chemical, dyes, paint, pharmaceutical, petrochemical and textile industries are some of the major industries re- sponsible for polluting the surrounding aquatic environment. It was observed that pH values of effluent samples collected from paint, pharmaceutical and dyes industries were slightly above and below the limit of 6.5 to 8.5 by ISI and WHO. The effluent samples collected from textile industries shows extremely high Total Dissolved Soild (TDS) content of 12023.6 mg/L and correspondingly high Total Solid (TS) content of 13499.2 mg/L. The chloride content in the effluents from textile industries was 238.4 mg/L which was significantly high than acceptable limit of 200 mg/L set by WHO. The BOD values of effluent samples collected from pharmaceutical, dyes, engineering and paint industries were 1047.3, 776.2, 604.8 and 535.8 mg/L respectively which lie above the maximum permitted BOD content of < 100 to 300 mg/L. The COD values in the different Industrial effluent samples were also very much higher than maximum permissible limit of 4.0 mg/L according to USPH Standard. The overall results highlight towards the discharge of highly polluted Waste Water effluent from indus- tries of Taloja Industrial area of Mumbai. These Industrial effluents have resulted in pollution of nearby Kasardi River thereby affecting the growth of vegetation and aquatic life. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treat- ment methods.

  • pollution in Water of kasardi river flowing along taloja Industrial area of mumbai india
    World environment, 2012
    Co-Authors: Ram S. Lokhande, P U Singare, Deepali S Pimple
    Abstract:

    The area of study selected in the present investigation was Kasardi River which receives heavy discharge of Waste effluent from the nearby Taloja Industrial belt which is one of the fastest developing Industrial belt of Mumbai. The study was performed to investigate the concentration of toxic heavy metals like chromium (Cr), cadmium (Cd), nickel (Ni), zinc (Zn), copper (Cu), lead (Pb) and iron (Fe) in river. It was observed that concentration of most of these heavy metals were much higher than the maximum permissible limits. These heavy metals have created threat to the aquatic life and through biomagnifications may enter the food chain thereby affecting the human beings as well. The research work was extended further to study the physico-chemical properties like temperature, pH, solid content, chloride, oil / grease content, BOD and COD values of the river Water. The authors point out that as India moves towards stricter regulation of Industrial effluents to control Water pollution, there is a need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.

  • toxicity study of heavy metals pollutants in Waste Water effluent samples collected from taloja Industrial estate of mumbai india
    Resources and Environment, 2011
    Co-Authors: Ram S. Lokhande, Deepali S Pimple, P U Singare, Munshi Nagar
    Abstract:

    The present research work deals with the assessment of pollution due to toxic heavy metals in the Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that dyes, paints, pharmaceutical and textile industries are some of the major industries contributing to the heavy metal pollutants in the surrounding aquatic environment. It was observed that paint manufacturing industries are the major contributors of toxic Cr, Zn and Pb amounting to 35.2, 33.1, and 31.4 mg/L respectively. It was also observed that major contribution of Cu (33.3 mg/L) was from dyes manufacturing units, while maximum Fe concentration of 12.8 mg/L was found in effluent samples released from textile industries. The concentration of Cd and Ni was found maximum in effluent samples collected from pharmaceutical industries amounting to 35.8 and 33.6 mg/L respectively. The overall results point out high concentration of toxic heavy metals in the effluent samples collected from different industries. These Industrial effluents will pollute the near by Water bodies affecting the growth of vegetation and aquatic life. These toxic heavy metals when released in aquatic environment will enter the food chain through bio-magnification causing various health problems in humans. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.Keywords Industrial Effluent; Industrial Pollution; Toxic Heavy Metals; Quantification; AAS; Health Hazards; Water Pollution; Taloja Industrial Area; Mumbai

  • toxicity study of heavy metals pollutants in Waste Water effluent samples collected from taloja Industrial estate of mumbai india
    Resources and Environment, 2011
    Co-Authors: Ram S. Lokhande, Deepali S Pimple, P U Singare, Munshi Nagar
    Abstract:

    The present research work deals with the assessment of pollution due to toxic heavy metals in the Industrial Waste Water effluents collected from Taloja Industrial belt of Mumbai. The study reveals that dyes, paints, pharmaceutical and textile industries are some of the major industries contributing to the heavy metal pollutants in the surrounding aquatic environment. It was observed that paint manufacturing industries are the major contributors of toxic Cr, Zn and Pb amounting to 35.2, 33.1, and 31.4 mg/L respectively. It was also observed that major contribution of Cu (33.3 mg/L) was from dyes manufacturing units, while maximum Fe concentration of 12.8 mg/L was found in effluent samples released from textile industries. The concentration of Cd and Ni was found maximum in effluent samples collected from pharmaceutical industries amounting to 35.8 and 33.6 mg/L respectively. The overall results point out high concentration of toxic heavy metals in the effluent samples collected from different industries. These Industrial effluents will pollute the near by Water bodies affecting the growth of vegetation and aquatic life. These toxic heavy metals when released in aquatic environment will enter the food chain through bio-magnification causing various health problems in humans. The results of the present investigation point out the need to implement common objectives, compatible policies and programmes for improvement in the Industrial Waste Water treatment methods.Keywords Industrial Effluent; Industrial Pollution; Toxic Heavy Metals; Quantification; AAS; Health Hazards; Water Pollution; Taloja Industrial Area; Mumbai

Hosang Shin - One of the best experts on this subject based on the ideXlab platform.

  • simple determination of hydrazine in Waste Water by headspace solid phase micro extraction and gas chromatography tandem mass spectrometry after derivatization with trifluoro pentanedione
    Analytica Chimica Acta, 2017
    Co-Authors: Hosang Shin
    Abstract:

    Abstract A headspace solid-phase micro extraction (HS-SPME) and gas chromatography-tandem mass spectrometric (GC-MS/MS) method is described to detect hydrazine after derivatization with 1,1,1-trifluoro-2,4-pentanedione (1,1,1-TFPD) to 3-methyl-5-(trifluoromethyl) pyrazole in Industrial Waste Water. The following optimal HS-SPME conditions were used: 85 μm-carboxen-polydimethylsiloxane fibre, 100 mg L −1 TFPD, saturated NaCl, an extraction/derivatization temperature of 80 °C, a heating time of 40 min, and a pH of 9.5. Under the established conditions, the detection and quantification limits were 0.002 μg L −1 and 0.007 μg L −1  by using 5 mL of Waste Water and the intra- and inter-day relative standard deviations were less than 10.2% at concentrations of 0.02 and 0.1 μg L −1 . The calibration curve showed good linearity, with r 2  = 0.998; the accuracy was in the range of 98.0–103%; and the precision of the assay was less than 10.2% in Industrial Waste Water. Hydrazine was detected over a concentration range of 0.011–0.074 μg L −1 in 5 of 20 Waste Water samples.