Добірка наукової літератури з теми "Bioremidiation"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Зміст
Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Bioremidiation".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Статті в журналах з теми "Bioremidiation"
1
Stia Dewi, Ratna, and Sri Lestari. "DEKOLORISASI LIMBAH BATIK TULIS MENGGUNAKAN JAMUR INDIGENOUS HASIL ISOLASI PADA KONSENTRASI LIMBAH YANG BERBEDA." Molekul 5, no. 2 (November 1, 2010): 75. http://dx.doi.org/10.20884/1.jm.2010.5.2.79.
Повний текст джерелаАнотація:
Azo as batik dyes are textile dyes which difficult to degradate. Fungus as bioremidiation organism are choosed to decolorize the dyes because its transformation ability, it can degradate toxic dyes component. The aim of research are to explore the fungus from Sokaraja-Banyumas batik industrial dyestuff, to know potential indigenous species wich can degradate it, to know dyestuff consentration which is degradated.Result of research showed that the isolation process of indigenous fungi from batik dyestuff in District Sokaraja Banyumas produce 4 isolates that have the potential dekolorization, they are 3 isolates of the genus Fusarium, and 1 isolate of the genus Aspergillus. That indigenous fungus can be used to decolorize dyestuff batik the decolorize percentage 69.346% -82.421%.
2
Serikbayeva, Akmaral, Assiya Boranbayeva, Maral Abdibattayeva, Farida Nurbayeva, Salima Cherkeshova, and Asem Myrzabekova. "Minimization of the Negative Environmental Impact of Oil Sludge by Using it in the Production of Bitumen." Environmental and Climate Technologies 26, no. 1 (January 1, 2022): 1337–49. http://dx.doi.org/10.2478/rtuect-2022-0101.
Повний текст джерелаАнотація:
Abstract In this paper, the prevention of negative technogenic impact on the environment of oil sludge by using it as a secondary resource is considered. Oil sludge from various objects of oil fields in Kazakhstan (Mangystau region) has been studied. The possibilities of using oil (after its separation from oil sludge by bioremidiation) as a partial substitute for bitumen base in the production of modified bitumen are considered. The main physical and mechanical characteristics of modified bitumen are determined. The results confirm that the modified bitumen prepared with oil sludge and oil separated by bioremiation method meets the requirements for polymer-bitumen binder to Kazakhstan standards and is suitable for the production of modified bitumen in its physico-chemical characteristics.
3
Syahrir, M., D. P. Renitasari, Ihwan, and S. A. Saridu. "Bioremidiation of organic waste matter in white legs shrimp ponds using blood shells (Anadara granosa)." IOP Conference Series: Earth and Environmental Science 860, no. 1 (October 1, 2021): 012097. http://dx.doi.org/10.1088/1755-1315/860/1/012097.
Повний текст джерела
4
S, Jeyabharathi. "Bioremidiation of Natural Organic Matter Wastes Arising From Water Reservation by White Rot Fungus Trametes Hirsuta MTCC 136." International Journal for Research in Applied Science and Engineering Technology V, no. IX (September 30, 2017): 1565–71. http://dx.doi.org/10.22214/ijraset.2017.9229.
Повний текст джерела
5
Setyadji, Bram, and Sisco Panggabean. "PENGARUH SUBSTRAT DAN KEDALAMAN TERHADAP PERTUMBUHAN SPONS (Callyspongia sp.) DI PERAIRAN JEPARA." BAWAL Widya Riset Perikanan Tangkap 3, no. 3 (February 7, 2017): 175. http://dx.doi.org/10.15578/bawal.3.3.2010.175-181.
Повний текст джерелаАнотація:
Potensi spons sebagai bioindikator (biomonitoring dan biomarker), bioremidiasi maupun untuk kebutuhan farmasi dan komersial telah banyak diidentifikasi melalui penelitian-penelitian sebelumnya. Penelitian ini bertujuan untuk memberikan informasi dasar mengenai pengaruh faktor lingkungan (substrat dan kedalaman perairan) terhadap pertumbuhan spons Callyspongia sp. Penelitian ini menggunakan metode eksperimental. Hasil penelitian menunjukan rata-rata laju pertumbuhan panjang spons Callyspongia sp. lebih tinggi pada kedalaman 2 m dibandingkan 1 m pada substrat ban dan jaring. Hubungan antara spons dengan substrat tidak menunjukan perbedaan yang berarti,sedangkan kedalaman diduga merupakan faktor yang lebih berpengaruh terhadap pertumbuhan spons jenis ini. The use of sponge as bioindicator (biomonitoring and biomarker), bioremidiation and pharmaceutical purposes have been widely reported in many studies. However little is known about knowledge of their biological and ecological aspect. The aim of this study was to presents basic information about the influence of substrate and depth on growth of Callyspongia sp. The results showed that the average of length growth of Callyspongia sp. in the water depth 2 m more higher than1 m in both net and tire subtrates here were no differences of growth between net and tire as a substrate, while depth was likely put more influence on the growth of this sponge.
6
Qodri, Icmi Al, Sipriyadi Sipriyadi, and Aceng Ruyani. "Isolation of Mercury Reducing Bacteria from Gold Mining waste that has the Potential as a Chromium Bioremediation Agent." Bencoolen Journal of Science Education and Technology 1, no. 1 (June 26, 2020): 19–24. http://dx.doi.org/10.33369/bjset.v1i1.11200.
Повний текст джерелаАнотація:
Traditional gold mining has been a widely handed down livelihood from the colonial era in Lebong regency, Bengkulu. Limited resources and low technology used on the gold mining has produce mercury waste that discharge to the environments directly. Over a long period of time, a unique bacteria community have been established in the mercury contaminated area. These bacteria can survive in the toxic metals’ environments. Bioremediation can be an alternative in dealing with environmental pollution by heavy metals. The goal of this research was to obtain morphological characterization of colonies and cell isolates of mercury reducing bacteria from the waste of gold miner for chromium bioremidiation. Bacterial isolation was carried out with nutrient agar (NA) media containing HgCl2 concentration of 0.01 ppm, 003 ppm, 0.05 ppm, 0.1 ppm and 0.2 ppm. The isolation results were selected from bacterial isolates that grew at HgCl2 concentrations. The selected isolates supported the independence of chromium with K2CrO4 concentrations of 10, 100 and 1,000 ppm. Then the morphology characterization of selected colonies and bacterial cells was carried out. The results of the study obtained 8 pure mercury reducing isolates. Only Sp8 bacterial isolates have the highest resistance to chrome to a concentration of 1,000 ppm. Bacteria Sp8 has the surface morphology of fine colonies, edges of circular colonies, flat elevation, overall appearance and color of yellowish white colonies and cell morphology with gram negative properties, basil cell shape, single cell arrangement and available endospores.
7
Fitriadi, Rafiq, Haeruddin Haeruddin, and Churun Ain. "EFEKTIVITAS MIKROORGANISME SEBAGAI BAHAN BIOREMIDIASI PADA LIMBAH PENCUCIAN IKAN TONGKOL (Auxis thazard) (SKALA LABORATORIUM) Microorganism Effectiviness as Bioreidiation of Tongkol (Auxis thazard) Wahery Waste (Laboratory Scale)." SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology 12, no. 1 (January 30, 2017): 52. http://dx.doi.org/10.14710/ijfst.12.1.52-59.
Повний текст джерелаАнотація:
ABSTRAK Limbah pencucian ikan dari pasar ikan dan industri pengolahan ikan tradisional biasanya langsung dibuang di saluran pembuangan tanpa adanya pengolahan limbah terlebih dahulu. Dampak pencemaran ini dapat menurunkan kualitas perairan sehingga menganggu kelangsungan hidup biota perairan dan masyarakat sekitar karena proses degradasi dari limbah. Oleh karena itu dibutuhkan teknik yang aman, efektif, dan ekonomis salah satunya dengan mikroorganisme sebagai bioremidiator. Penelitian ini menggunakan produk mikroorganisme pengolah limbah sebagai bahan bioremidiasi dengan komposisi mikroorganisme (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicilium sp., Sacharomyces sp., dan Actinomycets sp.) untuk mereduksi bahan pencemar dan limbah pencucian ikan tongkol sebagai air sampel. Penelitian ini mengukur konsentrasi amoniak (NH3), nitrit (NO2) dan asam sulfida (H2S) sebagai parameter utama dan DO, pH, temperatur, dan bau air sebagai parameter pendukung. Penelitian ini bertujuan untuk mengetahui efektivitas penggunaan mikroorganisme dalam upaya mengurangi bahan pencemar limbah pencucian ikan dari konsentrasi amoniak, nitrit dan asam sulfida. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan penambahan mikroorganisme 6 perlakuan termasuk kontrol (K= Kontrol, A= 0,01 ml , B = 0,1 ml ,C= 1 ml, D =10 ml dan E= 100 ml) menggunakan mikroorganisme yang tidak difermentasi selama 96 jam, terdiri dari 3 ulangan. Hasil yang diperoleh dari penelitian ini menunjukkan bahwa konsentrasi amoniak, nitrit, dan asam sulfida pada perlakuan A, B, C, D, dan E lebih rendah dibandingkan dengan kontrol, hal ini menunjukkan bahwa mikroorganisme dapat menurunkan limbah pencucian ikan tongkol. Nilai efektivitas paling tinggi yaitu perlakuan E sebagai bioremidiasi limbah pencucian ikan dengan persentase amoniak 59,88 %, nitrit 64,60 % dan asam sulfida 19,19%. Kata kunci: Limbah Pencucian Ikan, Mikroorganisme, Ammoniak, Nitrit, Asam Sulfida ABSTRACT Fish washery waste from the fish market and the traditional fish processing industry actually disposed in the sewer without waste treatment. The impact this poluttion can degrade the quality of water that disrupts the survival of aquatic biota and local resident because the degradation process of waste. Therefore we need a technique that is safe, effective, and economical one of them with the bacteria as bioremidiator. This study using microorganism as bioremidiator the composition of microorganisms (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicillium sp., Sacharomyces sp., and Actinomycets sp.) and Tongkol washery waste as sample. This study measured the concentration of ammonia (NH3), nitrite (NO2) and hydrogen sulfide (H2S) as the main parameter and DO, pH, temperature, and the smell of the water as a secondary parameter. This study aims to determine the effectiveness of the use of microorganism in an effort to reduce pollutants fish washing waste the concentration of ammonia, nitrite and hydrogen sulfide.This study uses a completely randomized design (CRD with addition of microorganisms 6 treatments included control (K = control, A = 0.01 ml, B = 0.1, C = 1 ml, D = 10 ml and E = 100 ml). The results obtained from this study showed that the concentrations of ammonia, nitrite, and hydrogen sulfide on treatment A, B, C, D, and E is lower than in the controls, suggesting that microorganism can reduce tongkol washery wash. The highest value of the effectiveness is treatment E as bioremediation of fish washery waste with percentage of ammonia 59.88%, 64.60% nitrite and 19.19% hydrogen sulfide. Keywords: Fish washery waste, Mikroorganism, Ammonia, Nitrite, Hydrogen Sulfide
8
Fitriadi, Rafiq, Haeruddin Haeruddin, and Churun A’in. "PERFORMA MIKROORGANISMEDENGAN PERLAKUAN BERBEDA TERHA DAP KONSENTRASI AMONIAK, NIRIT dan ASAM SULFIDA PADA LIMBAH PENCUCIAN IKAN TONGKOL Microorganism Performance with different Treatment Toward Consentration of Ammonia, Nitrite and Acid Sulfide." SAINTEK PERIKANAN : Indonesian Journal of Fisheries Science and Technology 11, no. 2 (February 25, 2016): 105. http://dx.doi.org/10.14710/ijfst.11.2.105-110.
Повний текст джерелаАнотація:
ABSTRAK Teknik untuk memperbaiki kualitas perairan yang aman dan efektif salah satunya dapat menggunakan mikroorganisme.Penelitian ini menggunakan produk mikroorganismepengolah limbah dengan komposisi (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicilium sp., Sacharomyces sp. dan Actinomycets sp.) sebagai bahan bioremidiator untuk mereduksi bahan pencemar pada limbah pencucian ikan tongkol sebagai air sampel. Penelitian ini mengukur konsentrasi amoniak (NH3), nitrit (NO2) dan asam sulfida (H2S) sebagai parameter utama dan DO, pH dan temperatur air sebagai parameter pendukung. Penelitian ini bertujuan untuk mengetahui kemampuan mikroorganisme pengolah limbah dengan perlakuan yang berbeda terhadap konsentrasi amoniak, nitrit dan asam sulfida. Perlakuan berbeda pada penelitian ini yaitu dengan 2 tahap uji, mikroorganisme tidak difermentasi dan difermentasi masing-masing selama 24 dan 96 jam dan terdiri dari 3 ulangan. Hasil yang diperoleh dari penelitian ini menunjukkan bahwa masing- masing perlakuan mengalami peningkatan konsentrasi amoniak, nitrit dan asam sulfida. Peningkatan konsentrasi amoniak, nitrit dan asam sulfida yang paling rendah dari perlakuan lainnya adalah pada perlakuan mikroorganisme yang tidak difermentasi selama 96 jam. Kata kunci: Limbah pencucian ikan, mikroorganisme, amoniak, nitrit, asam sulfida ABSTRACT One of techniques to improve the quality of water that is safety and effectivelly can use microorganisms. This study uses a product microorganisms waste treatment with the composition are (Rhodopseudomonas sp., Lactobacillus sp., Aspergillus sp., Penicilium sp., Sacharomyces sp. and Actinomycets sp.) as a material bioremidiator to reduce pollutants and waste leaching Tongkol fish (Auxis thazard) as water samples , This study measured the concentration of ammonia (NH3), nitrite (NO2) and hydrogen sulfide (H2S) as the main parameter and DO, pH and water temperature as a secondary parameter. This study aims to determine the ability of microorganisms to the waste treatment unequal treatment of concentrations of ammonia, nitrite, and hydrogen sulfide. Different treatment on this study are the second phase of the test, the microorganism is not fermented and unfermented respectively for 24 and 96 hours and consists of three replications. The results of this study indicate that each treatment had increased concentrations of ammonia, nitrite, and hydrogen sulfide. Increasing concentrations of ammonia, nitrite and hydrogen sulfide are lower than most other treatments is the treatment of microorganisms are fermented for 96 hours. Keywords: Fish washery waste, microorganism, ammonia, nitrite, hydrogen sulfide
9
Amadioha, AC. "Bioremidiation Potential of Pleurotus Ostreatus (Jacquin; Fries) P. Kummer: A Case of Agro-Wastes in Umudike Abia State." Open Access Journal of Agricultural Research 6, no. 4 (2021). http://dx.doi.org/10.23880/oajar-16000278.
Повний текст джерелаАнотація:
Biodegradation of agricultural wastes that constitute major source of environmental hazards and pollution by Pleurotus ostreatus is of importance in bioremediation of plant organic residues. Different agro-wastes; saw dust (SD), sugarcane baggasse (SB) and maize stalk (MS) and in combination (SD+MS, SD+SB, SB+MS, SD+MS+SB), were used to investigate the polysaccharide degrading potentials of P. ostreatus at the Department of Plant Health Management, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State. The fungus significantly (P<0.05) degraded the hemicelluloses, cellulose and lignin contents of the substrates though to varying degrees. The loss of polysaccharide content of the test substrates due to the fungus ranged as follows; hemicelluloses, from 20.64% with MS substrate to 48.92% with SB substrate; cellulose from 24.06% with SD substrate to 41.92% with SB substrate and lignin content from 4.01 % with MS substrate to 27.45% with SD substrate. The average delignification of the substrate polysaccharides by P. ostreatus was highest with SB substrate (37.86%), followed by SD+SB substrate (31.76%) and SD substrate (27.56%). This not only showed the ability of P. ostreatus to degrade agricultural wastes efficiently and grow at a wide range of substrates but also a potent organism capable of biodegrading and detoxifying a wide range of wastes and pollutants.
Дисертації з теми "Bioremidiation"
1
Hayes, Michael F. (Michael Francis). "Stimulating In situ groudwater bioremidiation via sparging : gas flow, groundwater flow, and mass transfer in the biosparge zone." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38755.
Повний текст джерела
2
Das, Alok Prasad. "Bioreduction based Bioremediation of Hexavalent Chromium Cr (VI) through Potential Indigenous Microbes." Thesis, 2009. http://ethesis.nitrkl.ac.in/1549/1/BIOREDUCTION_BASED_BIOREMEDIATION_OF_HEXAVALENT_CHROMIUM_Cr__VI__THROUGH_POTENTIAL_INDIGENOUS_MICROBES.pdf.
Повний текст джерелаАнотація:
Sukinda Valley, of Orissa, contains 97% of India’s chromite ore deposits and one of the prime open cast chromite ore mines in the world. (ENVIS Newsletter, 2007). Hexavalent
chromium pollution in this area has caused a major health hazard affecting 2,600,000 people in this area (Blacksmith Institute report, 2007). Our investigation involved biological treatment of Cr (VI) without producing any byproduct. Bacterial cultures tolerating high concentrations of chromium were isolated from the soil sample collected from the chromite contaminated sites of
Sukinda chromite mines and their bioaccumulation properties are investigated. Strains capable of growing at 300 mg/l of Cr (VI) are considered as chromium resistant. The mentioned stain was capable of resisting Cr (VI) up to 500 mg/l. Its resistance to different metals such as Ni, Zn, Cu,
Cd and Fe were also investigated. The effects of different operating parameters such as initial pH, temperature and initial Cr (VI) concentrations on bioaccumulation of Cr (VI) by enriched cultures were studied in a batch system. The experimental investigation showed the maximum
specific chromium uptake at pH 7 and temperature 300C. With increasing initial Cr (VI)concentration from 5 mg/l to 50 mg/l showed increase in Cr (VI) uptake. At about 50 mg l−1
initial Cr (VI) concentrations, uptake of the selected potential strain exceeded 98% within 12 hours of incubation. The bacterial isolate is identified by 16S rRNA sequencing as Brevebacterium casei. Data indicated that isolate culture can be utilized to improve efficiency of
biological treatment processes for effluents containing higher levels of Cr (VI).
3
Singh, Tanu. "Removal of petroleum hydrocarbon by using microbial mat." Thesis, 2012. http://ethesis.nitrkl.ac.in/3907/1/TANU_SINGH-FINAL_THESIS.pdf.
Повний текст джерелаАнотація:
Biodegradability of petroleum hydrocarbon was studied on the petroleum sludge from the industry (HPCL, Vishakhapatnam) by using microbial mat. Microbial mat is consisting of biological fiber like coconut fiber and jute fiber and it is immobilized by hydrocarbon degrading bacteria Pseudomonas aeruginosa. Adsorption study was performed on biological fiber by SEM, EDX and FTIR analysis. Biosurfactant screening was done on CTAB and Methylene Blue plate and it confirmed the production of Rhamnolipid. Optimum conditions like Temperature,pH and Nitrogen source for the degradation of the hydrocarbon was also studied by using Taguchi method.Total petroleum hydrocarbon of petroleum sludge degradation was studied for 4 weeks using microbial mat, and degradation of hydrocarbon was confirmed by GC-MS analysis and it shows predominant result under optimum growth conditions.
4
Mullick, Urmi. "Simultaneous removal of chromium and sulphate from tannery waste using microbes." Thesis, 2012. http://ethesis.nitrkl.ac.in/3929/1/Urmi_Thesis.pdf.
Повний текст джерелаАнотація:
Leather industry contributes to one of the major industrial pollution problems our country is facing today. Microbes (bacteria/fungi) are the most important eco-friendly agents for the degradation and detoxification of industrial pollutants along with organic waste removal. Extensive research has been carried out to find suitable, resistant and efficient microbes to treat the tannery effluent. In the concerned study, we have tried to isolate the organisms from the tannary effluent acclimatized them to increasing Chromium and Sulphate rich environment which may later be utilized towards bioremediation of both the pollutants. In this direction, bacteria resisting 240mg/l Cr and 280mg/l and others with 170mg/l Cr and 200mg/l sulphates have been obtained and tested for growth rates and Cr removal capacity. A maximum of 99.8% Cr removal have been achieved in four days of submerged culture by Micrococcus yunnanensis. The consortium of Pseudomonas aeruginosa & Micrococcus yunnanensis microbes is found to be best performing interms of biomass growth and removal of Cr than the individual isolate. These two microbes also remediated about 24% sulphate from the culture. The optimal parameters for treatment process were pH 7, temperature 35oC, rpm 100 and Cr concentration 150 mg/l. Laboratory scale fermenter study maintaining the optimized parameters showed 97.5 % removal of Cr in just 48 hours and the highest of which is 98% achieved in 56 hours. In a second step, the effluent was treated by a consortium of SRBs (Desulfovibrio desulfuricans, D. vulgaris and D. gigas) that utilize Cr(VI) as an electron acceptor for sulphate reduction and hence both Cr(VI) and sulphates get removed from the broth. From the initial concentrations of 150mg/l and 200 mg/l of Cr(VI) and sulphate in the simulated wastewater, it was brought down to 0.1 mg/l and 70.2 mg/l for Cr and sulphate respectively. Hence in a two stage biological treatment process for tannery waste, an excellent 99.9% Chromium and 63.9 % sulphate removal was achieved.
5
Seragadam, Padma. "Bio-removal of nickel from electroplating industry." Thesis, 2008. http://ethesis.nitrkl.ac.in/4166/1/%E2%80%9CBio-removal_of_Nickel_from_electroplating_industry.pdf.
Повний текст джерелаАнотація:
Ni (II) has been designated as a priority pollutant by the US Environmental Protection Agency (USEPA) due to its ability to cause mutations and cancer in humans. The risk
associated with soil and groundwater contamination of nickel waste generated by many industries is high, and therefore Ni (II) remediation is of critical importance. It is discharged into the environment through the disposal of wastes from industries like Electroplating industry, metallurgical and metal finishing, textiles and ceramics, pigment and wood preservatives, photographic sensitizer manufacturing, etc. In the environment nickel occurs in divalent and tetravalent forms. Comparative to tetravalent, divalent nickel is more hazardous to the environment. Electroplating industry which commonly use nickel metal for plating process, discharges the effluents into the environment containing Nickel in excess of the maximum permissible limits. According to W .H.O. standards the permissible limits for nickel in effluent is 3mg/l and in drinking water is 0.02 mg/l. Staphylococcus sp. has polyphosphate in its cell, which is responsible for sequestering nickel. Using chemical and biological methods conjointly can decrease the cost of remediating contaminated sites. Microbial reduction of Ni(II), an important aspect of biological remediation, requires the knowledge of microorganisms capable of reducing Ni(II) and the mechanisms involved in the reduction processes. Staphylococcus sp. has polyphosphate in its cell, which is responsible for sequestering nickel. The present study is an attempt to evaluate the bio-removal of nickel from wastewater, which is collected and characterized from an electroplating industry, Coimbatore, Tamilnadu, RSP ,Rourkela. Staphylococcus cultured in the lab is used for the removal of nickel. The overall objective of this study was to investigate the effect of various parameters like pH, inoculum volume, sugar amount, initial nickel concentration on nickel reduction by indigenous soil isolated bacteria isolated from soil contaminated sites.
6
Seragadam, Padma. "A study on Bio-removal of nickel from electroplating industry." Thesis, 2008. http://ethesis.nitrkl.ac.in/4186/1/14.pdf.
Повний текст джерелаАнотація:
Ni (II) has been designated as a priority pollutant by the US Environmental Protection Agency (USEPA) due to its ability to cause mutations and cancer in humans. The risk associated with soil and groundwater contamination of nickel waste generated by many industries is high, and therefore Ni (II) remediation is of critical importance. It is discharged into the environment through the disposal of wastes from industries like Electroplating industry, metallurgical and metal finishing, textiles and ceramics, pigment and wood preservatives, photographic sensitizer manufacturing, etc. In the environment nickel occurs in divalent and tetravalent forms. Comparative to tetravalent, divalent nickel is more hazardous to the environment. Electroplating industry which commonly use nickel metal for plating process, discharges the effluents into the environment containing Nickel in excess of the maximum permissible limits. According to W .H.O. standards the permissible limits for nickel in effluent is 3mg/l and in drinking water is 0.02 mg/l. Staphylococcus sp. has polyphosphate in its cell, which is responsible for sequestering nickel. Using chemical and biological methods conjointly can decrease the cost of remediating contaminated sites. Microbial reduction of Ni(II), an important aspect of biological remediation, requires the knowledge of microorganisms capable of reducing Ni(II) and the mechanisms involved in the reduction processes. Staphylococcus sp. has polyphosphate in its cell, which is responsible for sequestering nickel. The present study is an attempt to evaluate the bio-removal of nickel from wastewater, which is collected and characterized from an electroplating industry, Coimbatore, Tamilnadu,RSP ,Rourkela. Staphylococcus cultured in the lab is used for the removal of nickel. The overall objective of this study was to investigate the effect of various parameters like pH, inoculum volume, sugar amount, initial nickel concentration on nickel reduction by indigenous soil isolated bacteria isolated from soil contaminated sites.
7
Sakariya, Jigar Jayant. "Phenol Degradation Using Microorganisms." Thesis, 2015. http://ethesis.nitrkl.ac.in/6839/1/Phenol_Sarkaria_2015.pdf.
Повний текст джерелаАнотація:
Pollutants have adverse effect on environment and public health. From all the above pollutants given phenol is most toxic organic compound present in environment as pollutant. EPA (1998) has declared that 11th out of 126 toxic chemicals is phenol. All the processes available for phenol degradation are not economically viable hence biodegradation is recommended since it is pollution free and also economically viable. In the below study three microorganism isolated from soil were compared for phenol degradation. The comparison was done on basis of percentage of phenol degraded, optimum temperature, optimum media PH and the inoculum age and volume. From the comparative study the best microorganism strain was found out to be PR3. This microorganism was found to be degrading maximum phenol of 76% and at temp of about 30oC and pH of around 7 with inoculum age between 20-24 hours. After characterisation this microorganism was found to be staphylococcus lentus.
8
Saluja, Megha. "Isolation and Characterization of Phenol Degrading Organisms from Soil Sample Containing Traces of Crude Oil." Thesis, 2015. http://ethesis.nitrkl.ac.in/7950/1/2015_Isolation__Saluja.pdf.
Повний текст джерелаАнотація:
The present study was conducted to isolate microorganisms capable of degrading phenol found in soil sample. The microorganisms were isolated from soil contaminated with phenol using enrichment technique and the isolates obtained from different soil samples were grown in nutrient broth, nutrient agar plates and mineral salt media. Mineral salt media was used for the degradation of phenol. The efficiency and resistivity of this biomass was checked for different concentrations of phenol with maximum of 1500 ppm. Three different microbes were identified and isolated which could resist this high concentration of phenol. The different characterization tests were performed on these three microorganisms. The ability of these microorganisms to degrade phenol at different pH was also observed. These microbes were also examined for their degrade ability by revealing them to different temperatures. The characterization tests and degradation study could give an identified microorganism able to degrade phenol. Outcome of this study offer a useful guideline in evaluating potential phenol degraders from the environment.
9
Chaudhari, Kamini Ishwarlal. "Performance Study of MIL-53(Fe)and Its Doped Variants as Potential Photo catalysts." Thesis, 2016. http://ethesis.nitrkl.ac.in/8188/1/2016_MT_214CH1096_Performance_Study_of_MIL-53_.pdf.
Повний текст джерелаАнотація:
This work includes synthesis of MIL-53 (Fe) metal organic framework and its doped derivatives (Li, Na, K) using microwave technique. Various characterization techniques like SEM, PXRD, TGA, FT-IR and UV-Vis reflectance detailed the physical, thermal and electronic properties of the synthesized materials. MIL-53-(Fe) was found to be stable up to 330?C and fairly stable in the aqueous environment where pH was ranging from 2-11. MIL-53 (Fe) along with its cation doped variants were found to be photo catalytically active and the activity decreased in the following order: MIL-53-(Fe) > MIL-53-(Fe) Li > MIL-53-(Fe) K > MIL-53-(Fe) Na; both in presence as well as in absence of an electron acceptor (H2O2). MIL-53 (Fe) showed degradation efficiency of approximate 86% and in presence of H2O2 as an enhancer it was increased to 96%.
10
Dhabarde, Nikhil Rahul. "Photodegradation of Ammonia Using MIL-125 as a Potential Photocatalyst." Thesis, 2016. http://ethesis.nitrkl.ac.in/8241/1/2016_MT_214CH1098_Photodegradation.pdf.
Повний текст джерелаАнотація:
Metal Organic frameworks have shown promises in adsorption, gas separation, gas storage, catalysis, drug delivery and sensing. MOFs have shown potential as heterogenous catalysts as well. Their high surface area, tunable porosity, diversity in metal and functional groups, pore volume and active metal sites make them attractive proposition to be used as catalysts. Heterogeneous photocatalysis is a one of the a most attractive technologies for the degradation of organic substances present in wastewater. Literature reports conclude MIL-125(Titanium based MOF) has a great potential in photocatalysis. In our present area of research, we report a novel rapid synthesis procedure of MIL-125. Detailed characterizations were carried out using various techniques like SEM, PXRD,TGA,BET surface area analysis, FTIR and UV reflectance study. A detailed aqueous phase stability study followed which showed its stability under various pH conditions. The specific surface area of approx. 371 m2/g showed the porous nature of the synthesized samples whereas the corresponding band gap energy value was found to be 3.18 eV. Ammonia degradation study was carried out using MIL-125 and the results were found to be consistent. The final degradation of ammonia was found to be approx. 70% and the experimental data were best fit pseudo first order kinetic a model where the a rate constant was a found to a be 0.03189. Two more variants of MIL-125 were synthesized viz. Fe doped and MIL-125 Solvothermal. Both the products were found to be porous with an experimental measured surface areas of 246 m2/g and 240m2/g, respectively. The corresponding band a gapa energy were 3.4 eV and a 3.2 eV. These preliminary evaluation shows the potential of both the samples and further investigation are necessary to find their effectiveness.