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  1. Article: Review on fabrication methodologies and its impacts on performance of dye-sensitized solar cells

    Richhariya, Geetam / Meikap, Bhim Charan / Kumar, Anil

    Environmental science and pollution research. 2022 Mar., v. 29, no. 11

    2022  

    Abstract: This review highlights and summarizes the impact of different fabrication processes on the efficiency of dye-sensitized solar cells (DSSCs). Energy conversion efficiency of cell depends upon semiconductor, sensitizer, electrolyte, and counter electrode. ... ...

    Abstract This review highlights and summarizes the impact of different fabrication processes on the efficiency of dye-sensitized solar cells (DSSCs). Energy conversion efficiency of cell depends upon semiconductor, sensitizer, electrolyte, and counter electrode. Efficiency of DSSCs can be enhanced by properly selecting the optimum significance of various parameters of fabrications process. Major challenges of these solar cells are non-vegetal, noxious, extreme sensitizers. Application of natural dyes in this field plays a significant role. An optimized CdSe-TiO₂ photoanode showed a power conversion efficiency (PCE) of 13.29% and short circuit current density of 15.30 mA cm⁻² for the DSSC. Power conversion efficiency of 3.26% was achieved by using TTO electrode for DSSC device that is ascribed to the improved electrical and optical properties due to doping with Ta element. Absorbance of betalain was shown in the visible range of 530–535 nm for betanin while 450–559 nm for anthocyanin pigment. The natural dyes are economical, readily available, and environmentally friendly. This compilation would be beneficial for researchers working on dye solar cell.
    Keywords absorbance ; anthocyanins ; betalains ; electrodes ; electrolytes ; energy conversion ; pollution ; research ; semiconductors ; solar cells
    Language English
    Dates of publication 2022-03
    Size p. 15233-15251.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note Review
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-021-18049-2
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  2. Article ; Online: Review on fabrication methodologies and its impacts on performance of dye-sensitized solar cells.

    Richhariya, Geetam / Meikap, Bhim Charan / Kumar, Anil

    Environmental science and pollution research international

    2022  Volume 29, Issue 11, Page(s) 15233–15251

    Abstract: This review highlights and summarizes the impact of different fabrication processes on the efficiency of dye-sensitized solar cells (DSSCs). Energy conversion efficiency of cell depends upon semiconductor, sensitizer, electrolyte, and counter electrode. ... ...

    Abstract This review highlights and summarizes the impact of different fabrication processes on the efficiency of dye-sensitized solar cells (DSSCs). Energy conversion efficiency of cell depends upon semiconductor, sensitizer, electrolyte, and counter electrode. Efficiency of DSSCs can be enhanced by properly selecting the optimum significance of various parameters of fabrications process. Major challenges of these solar cells are non-vegetal, noxious, extreme sensitizers. Application of natural dyes in this field plays a significant role. An optimized CdSe-TiO
    MeSH term(s) Coloring Agents ; Electric Power Supplies ; Electrodes ; Solar Energy ; Sunlight
    Chemical Substances Coloring Agents
    Language English
    Publishing date 2022-01-03
    Publishing country Germany
    Document type Journal Article ; Review
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-021-18049-2
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  3. Article ; Online: Strategic implementation of integrated bioaugmentation and biostimulation for efficient mitigation of petroleum hydrocarbon pollutants from terrestrial and aquatic environment

    Behera, Ipsita Dipamitra / Nayak, Manoranjan / Mishra, Asmita / Meikap, Bhim Charan / Sen, Ramkrishna

    Marine Pollution Bulletin. 2022 Apr., v. 177 p.113492-

    2022  

    Abstract: Release of petroleum hydrocarbon pollutants poses a serious problem to the terrestrial as well as marine ecosystem. This study investigated and compared the potency of different biodegradation strategies for mitigating total petroleum hydrocarbon (TPH) ... ...

    Abstract Release of petroleum hydrocarbon pollutants poses a serious problem to the terrestrial as well as marine ecosystem. This study investigated and compared the potency of different biodegradation strategies for mitigating total petroleum hydrocarbon (TPH) of petroleum refinery sludge by an integrated action of bioaugmentation and biostimulation vis-à-vis separate bioaugmentation and biostimulation approaches. The implementation of a concomitant bioaugmentation-biostimulation strategy (BABSS) involving the indigenously developed bacterial consortium and poultry litter extract showed the best performance by mitigating the TPH up to 90.3 ± 3.7% in 21 days. The GC-FID analysis confirmed the efficacy of different TPH degradation strategies. The kinetic study of TPH degradation of BABSS resulted first-order with rate 0.11 day⁻¹. Thus, the BABSS proved to be more efficient in degrading TPH in an eco-friendly manner and hence, may pave the way for better management of petroleum hydrocarbon pollutants, while providing a sustainable solution to the disposal of poultry wastes.
    Keywords aquatic environment ; bioaugmentation ; biodegradation ; marine ecosystems ; marine pollution ; oil and gas industry ; petroleum ; poultry ; poultry manure ; sludge ; Petroleum hydrocarbon pollutants ; Nutrient amendment ; Bacterial consortium
    Language English
    Dates of publication 2022-04
    Publishing place Elsevier Ltd
    Document type Article ; Online
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113492
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  4. Article ; Online: Strategic implementation of integrated bioaugmentation and biostimulation for efficient mitigation of petroleum hydrocarbon pollutants from terrestrial and aquatic environment.

    Behera, Ipsita Dipamitra / Nayak, Manoranjan / Mishra, Asmita / Meikap, Bhim Charan / Sen, Ramkrishna

    Marine pollution bulletin

    2022  Volume 177, Page(s) 113492

    Abstract: Release of petroleum hydrocarbon pollutants poses a serious problem to the terrestrial as well as marine ecosystem. This study investigated and compared the potency of different biodegradation strategies for mitigating total petroleum hydrocarbon (TPH) ... ...

    Abstract Release of petroleum hydrocarbon pollutants poses a serious problem to the terrestrial as well as marine ecosystem. This study investigated and compared the potency of different biodegradation strategies for mitigating total petroleum hydrocarbon (TPH) of petroleum refinery sludge by an integrated action of bioaugmentation and biostimulation vis-à-vis separate bioaugmentation and biostimulation approaches. The implementation of a concomitant bioaugmentation-biostimulation strategy (BABSS) involving the indigenously developed bacterial consortium and poultry litter extract showed the best performance by mitigating the TPH up to 90.3 ± 3.7% in 21 days. The GC-FID analysis confirmed the efficacy of different TPH degradation strategies. The kinetic study of TPH degradation of BABSS resulted first-order with rate 0.11 day
    MeSH term(s) Ecosystem ; Environmental Pollutants/analysis ; Hydrocarbons/analysis ; Petroleum/analysis ; Soil Microbiology ; Soil Pollutants/analysis
    Chemical Substances Environmental Pollutants ; Hydrocarbons ; Petroleum ; Soil Pollutants
    Language English
    Publishing date 2022-03-16
    Publishing country England
    Document type Journal Article
    ZDB-ID 2001296-2
    ISSN 1879-3363 ; 0025-326X
    ISSN (online) 1879-3363
    ISSN 0025-326X
    DOI 10.1016/j.marpolbul.2022.113492
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  5. Article: Utilizing Agricultural Residue for the Cleaner Biofuel Production and Simultaneous Air Pollution Mitigation Due to Stubble Burning: A Net Energy Balance and Total Emission Assessment

    Siddiqi, Hammad / Mishra, Asmita / Kumari, Usha / Maiti, Payal / Meikap, Bhim Charan

    ACS sustainable chemistry & engineering. 2021 Nov. 12, v. 9, no. 47

    2021  

    Abstract: The burning of agricultural residue in open fields poses a serious environmental threat that adversely affects human health and the ecosystem. Overall, this study aims to quantify emissions because of stubble burning followed by pyrolysis conversion of ... ...

    Abstract The burning of agricultural residue in open fields poses a serious environmental threat that adversely affects human health and the ecosystem. Overall, this study aims to quantify emissions because of stubble burning followed by pyrolysis conversion of this feedstock and finally evaluate its energy performance. An assessment about pollutant emissions because of open-field burning was made, considering the two scenarios of flaming and smoldering. The inventory includes gaseous pollutants, particulate matter, and greenhouse gases with a total average of 7 TPA emissions per hectare of cultivated land. Subsequently, pyrolysis was carried out in a fixed bed semi-continuous lab-scale setup. The heating value of 18.85, 28.13, and 3.15 MJ kg–¹ was obtained for 36.02, 25.20, and 38.78 wt % yield of bio-oil, biochar, and fuel gas, respectively. Further analysis also indicates phenols, aldehyde, alcohols, and other organic fractions in bio-oil of density 1.06 g cm–³ and 34.63 cm² s–¹ kinematic viscosity. This study’s significant highlight is a detailed analysis of energy gain from the process in terms of various performance indices. The net energy balance was applied to each co-product. The biochar was evaluated as the most energy valuable pyrolysis product with 0.985 MJ input/MJ output index and 72.35% energy efficiency. The fossil-to-energy ratio was determined as 1.28, indicating a net positive energy gain for the system’s input resources. Altogether, these results establish the viability of this sustainable waste-to-energy process as an alternative to conventional fossil fuels and encourage its commercial upscaling.
    Keywords agricultural land ; agricultural wastes ; air pollution ; aldehydes ; biochar ; biofuels ; coproducts ; ecosystems ; energy balance ; energy efficiency ; feedstocks ; fuel production ; green chemistry ; greenhouses ; human health ; inventories ; particulates ; pollutants ; pollution control ; pyrolysis ; stubble ; viability ; viscosity
    Language English
    Dates of publication 2021-1112
    Size p. 15963-15972.
    Publishing place American Chemical Society
    Document type Article
    ISSN 2168-0485
    DOI 10.1021/acssuschemeng.1c06202
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  6. Article: Enhanced biodegradation of total petroleum hydrocarbons by implementing a novel two-step bioaugmentation strategy using indigenous bacterial consortium

    Behera, Ipsita Dipamitra / Nayak, Manoranjan / Biswas, Subrata / Meikap, Bhim Charan / Sen, Ramkrishna

    Journal of environmental management. 2021 Aug. 15, v. 292

    2021  

    Abstract: In the present study, a two-step bioaugmentation strategy (TSBS) was implemented by using indigenous bacterial consortium to enhance the degradation of total petroleum hydrocarbons (TPH) from petroleum refinery sludge (PRS). A bacterial consortium was ... ...

    Abstract In the present study, a two-step bioaugmentation strategy (TSBS) was implemented by using indigenous bacterial consortium to enhance the degradation of total petroleum hydrocarbons (TPH) from petroleum refinery sludge (PRS). A bacterial consortium was developed using four indigenous isolated strains, Dietzia sp. IRB191, Dietzia sp. IRB192, Staphylococcus sp. BSM19 and Stenotrophomonas sp. IRB19 from PRS. The optimum conditions of pH, temperature, and sludge concentration were 7, 34 °C, and 2% (w/v), respectively, for maximum TPH degradation, obtained using one variable at a time approach. Under the optimal culture conditions, the developed consortium was inoculated twice to the culturing medium, at the beginning (0ᵗʰ day) and again on the 10th day for implementing a novel TSBS. The maximum TPH degradation of 91.5 ± 2.28% was found with TSBS, which was 1.18 times higher than that of SSBS (77.3 ± 2.6%) in 15 days of incubation. GC-FID study also confirmed that the TPH present in the PRS was effectively degraded by the bacterial consortium with TSBS. The TPH degradation by using TSBS proceeded according to the first-order kinetics with a rate constant of 0.155 d⁻¹. Hence, biodegradation using a TSBS can be considered an effective and eco-friendly process for safe disposal of petroleum refinery sludge.
    Keywords Dietzia ; Staphylococcus ; Stenotrophomonas ; bioaugmentation ; biodegradation ; oil and gas industry ; pH ; petroleum ; sludge ; temperature
    Language English
    Dates of publication 2021-0815
    Publishing place Elsevier Ltd
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 184882-3
    ISSN 1095-8630 ; 0301-4797
    ISSN (online) 1095-8630
    ISSN 0301-4797
    DOI 10.1016/j.jenvman.2021.112746
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  7. Article: Adsorptive Removal of Aqueous Phase Copper (Cu2+) and Nickel (Ni2+) Metal Ions by Synthesized Biochar–Biopolymeric Hybrid Adsorbents and Process Optimization by Response Surface Methodology (RSM)

    Biswas, Subrata / Meikap, Bhim Charan / Sen, Tushar Kanti

    Water, air, and soil pollution. 2019 Aug., v. 230, no. 8

    2019  

    Abstract: This research work is focused on the synthesis, characterization, and application of cost-effective biochar–biopolymeric hybrid adsorbents from waste agricultural biomass and sodium alginate. The adsorbents were characterized by BET (Brunauer–Emmett– ... ...

    Abstract This research work is focused on the synthesis, characterization, and application of cost-effective biochar–biopolymeric hybrid adsorbents from waste agricultural biomass and sodium alginate. The adsorbents were characterized by BET (Brunauer–Emmett–Teller), FTIR (Fourier transform infrared), XRD (X-ray diffraction), FESEM (field emission scanning electron microscopy), and bulk density measurement. The performance of the synthesized hybrid adsorbents has been tested for the removal of aqueous phase Ni2+ and Cu2+ metal ions at a concentration range of 25 to 100 mg/L, adsorbent dose of 1–3 g/L, and system temperature of 298–308 K, respectively. The effect of various physicochemical process parameters such as solution pH, adsorbent dose, initial metal ion concentration, temperature, and presence of salts on metal ion adsorption has been studied here, and experimental process parameters are being optimized by response surface methodology (RSM). The model was fitted well with the experimental data. Various kinetic models, namely, pseudo-first-order, pseudo-second-order, and Weber–Morris, have been fitted with batch experimental data, and the mechanism of adsorption has been identified. The maximum Langmuir monolayer adsorption capacity for Cu2+ and Ni2+ were 112 and 156 mg/g, respectively, which are comparative to other published adsorbent’s capacity data under similar experimental conditions. Thermodynamic parameter studies showed that the system was endothermic and spontaneous in nature.
    Keywords Fourier transform infrared spectroscopy ; X-ray diffraction ; adsorbents ; adsorption ; biomass ; bulk density ; copper ; cost effectiveness ; endothermy ; kinetics ; metal ions ; nickel ; pH ; response surface methodology ; salts ; scanning electron microscopy ; sodium alginate ; temperature ; thermodynamics ; wastes
    Language English
    Dates of publication 2019-08
    Size p. 197.
    Publishing place Springer International Publishing
    Document type Article
    ZDB-ID 120499-3
    ISSN 1573-2932 ; 0049-6979 ; 0043-1168
    ISSN (online) 1573-2932
    ISSN 0049-6979 ; 0043-1168
    DOI 10.1007/s11270-019-4258-y
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  8. Article: Semifluidized Bed Adsorption Column Studies for Simultaneous Removal of Aqueous Phase Pb2+ and Cd2+ by Composite Adsorbents: an Experimental and Mass Transfer Dynamic Model–Based Approach

    Biswas, Subrata / Sharma, Shubham / Siddiqi, Hammad / Meikap, Bhim Charan / Sen, Tushar Kanti / Khiadani, Mehdi

    Water, air, and soil pollution. 2021 Jan., v. 232, no. 1

    2021  

    Abstract: In this present work, the performance of a semifluidized bed adsorption column has been evaluated for the removal of Pb²⁺ and Cd²⁺ in a semi-continuous mode. The composite adsorbents have been synthesized from waste biomass–based biochar and alginate- ... ...

    Abstract In this present work, the performance of a semifluidized bed adsorption column has been evaluated for the removal of Pb²⁺ and Cd²⁺ in a semi-continuous mode. The composite adsorbents have been synthesized from waste biomass–based biochar and alginate-based biopolymer. Synthesized adsorbent characterized and finally tested its effectiveness in the removal of both Pb²⁺ and Cd²⁺ metal ions by batch and semifluidized bed column adsorption studies. The adsorptive removal efficiencies were found to be dependent on solution pH, initial metal ion concentration, adsorbent dose or initial bed height, static bed height, system temperature and inlet flow rate of semifluidized bed operation. Pseudo-second-order kinetic model was fitted to the batch adsorption experimental data by non-linear and linear regression method and it was found that the non-linear method gives a better way of obtaining the various kinetic parameters and its applicability. A solute phase mass transfer–based dynamic model has been developed to explain the adsorptive behaviour of metal ions onto adsorbents during the semi-continuous mode of operation of a semifluidized bed system. Various mass transfer parameters and degree of dispersion coefficients for the individual packed and fluidized section were obtained from the developed model.
    Keywords adsorbents ; adsorption ; air ; biochar ; biopolymers ; dynamic models ; kinetics ; mass transfer ; pH ; regression analysis ; soil pollution ; solutes ; temperature ; water
    Language English
    Dates of publication 2021-01
    Size p. 8.
    Publishing place Springer International Publishing
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 120499-3
    ISSN 1573-2932 ; 0049-6979 ; 0043-1168
    ISSN (online) 1573-2932
    ISSN 0049-6979 ; 0043-1168
    DOI 10.1007/s11270-020-04951-x
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  9. Article ; Online: Removal of fly-ash and dust particulate matters from syngas produced by gasification of coal by using a multi-stage dual-flow sieve plate wet scrubber.

    Kurella, Swamy / Meikap, Bhim Charan

    Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering

    2016  Volume 51, Issue 10, Page(s) 870–876

    Abstract: In this work, fly-ash water scrubbing experiments were conducted in a three-stage lab-scale dual-flow sieve plate scrubber to observe the performance of scrubber in fly-ash removal at different operating conditions by varying the liquid rate, gas rate ... ...

    Abstract In this work, fly-ash water scrubbing experiments were conducted in a three-stage lab-scale dual-flow sieve plate scrubber to observe the performance of scrubber in fly-ash removal at different operating conditions by varying the liquid rate, gas rate and inlet fly-ash loading. The percentage of fly-ash removal efficiency increases with increase in inlet fly-ash loading, gas flow rate and liquid flow rate, and height of the scrubber; 98.55% maximum percentage of fly-ash removal efficiency (ηFA) is achieved at 19.36 × 10(-4) Nm(3)/s gas flow rate (QG) and 48.183 × 10(-6) m(3)/s liquid flow rate (QL) at 25 × 10(-3) kg/Nm(3) inlet fly-ash loading (CFA,i). A model has also been developed for the prediction of fly-ash removal efficiency of the column using the experimental results. The predicted values calculated using the correlation matched well with the experimental results. Deviations observed between the experimental and the predicted values were less than 20%.
    MeSH term(s) Air Pollution ; Cities ; Coal ; Coal Ash/analysis ; Dust/analysis ; Environmental Monitoring ; Particulate Matter/analysis
    Chemical Substances Coal ; Coal Ash ; Dust ; Particulate Matter
    Language English
    Publishing date 2016-08-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 196584-0
    ISSN 1532-4117 ; 0360-1226 ; 1077-1204 ; 1093-4529
    ISSN (online) 1532-4117
    ISSN 0360-1226 ; 1077-1204 ; 1093-4529
    DOI 10.1080/10934529.2016.1181465
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  10. Article: Present cum future of SARS-CoV-2 virus and its associated control of virus-laden air pollutants leading to potential environmental threat - A global review.

    Mukherjee, Subhrajit / Boral, Soumendu / Siddiqi, Hammad / Mishra, Asmita / Meikap, Bhim Charan

    Journal of environmental chemical engineering

    2021  Volume 9, Issue 2, Page(s) 104973

    Abstract: The world is presently infected by the biological fever of COVID-19 caused by SARS-CoV-2 virus. The present study is mainly related to the airborne transmission of novel coronavirus through airway. Similarly, our mother planet is suffering from drastic ... ...

    Abstract The world is presently infected by the biological fever of COVID-19 caused by SARS-CoV-2 virus. The present study is mainly related to the airborne transmission of novel coronavirus through airway. Similarly, our mother planet is suffering from drastic effects of air pollution. There are sufficient probabilities or evidences proven for contagious virus transmission through polluted airborne-pathway in formed aerosol molecules. The pathways and sources of spread are detailed along with the best possible green control technologies or ideas to hinder further transmission. The combined effects of such root causes and unwanted outcomes are similar in nature leading to acute cardiac arrest of our planet. To maintain environmental sustainability, the prior future of such emerging unknown biological hazardous air emissions is to be thoroughly researched. So it is high time to deal with the future of hazardous air pollution and work on its preventive measures. The lifetime of such an airborne virus continues for several hours, thus imposing severe threat even during post-lockdown phase. The world waits eagerly for the development of successful vaccination or medication but the possible outcome is quite uncertain in terms of equivalent economy distribution and biomedical availability. Thus, risk assessments are to be carried out even during the post-vaccination period with proper environmental surveillance and monitoring. The skilled techniques of disinfection, sanitization, and other viable wayouts are to be modified with time, place, and prevailing climatic conditions, handling the pandemic efficiently. A healthy atmosphere makes the earth a better place to dwell, ensuring its future lifecycle.
    Language English
    Publishing date 2021-01-13
    Publishing country Netherlands
    Document type Journal Article ; Review
    ISSN 2213-2929
    ISSN 2213-2929
    DOI 10.1016/j.jece.2020.104973
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