Temat: bioremediation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Utilizing the Eutrophication in Bioresources Recovery and Biogas Production – A Case Study in Egypt
Autorzy:: Khalil, Mohamed M.
Ficara, Elena
Colaninno, Nicola
EL-Baz, Amro
Powiązania:: https://bibliotekanauki.pl/articles/2202303.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: eutrophication
microalgae
bioresources recovery
bioremediation
Opis:: In this work, the nutrients and eutrophication problem are integrated into a nature-based solution by incorporating microalgae-based nutrient removal from wastewater and collecting the residue in an anaerobic digestion plant to produce biogas that is directly exported to an existing gas-fired power plant and closes the bioresource loop. El Burullus lake in Egypt was selected as a case study because it is rich in nutrients and suitable for the integrated system. The theoretical results were promising as for one-hectare, nutrient pollution could be reduced with a total nitrogen removal rate of 4 kg•d-1, a total phosphorus removal rate of 1.1 kg•d-1, and a total COD removal rate of 9.3 kg•d-1. The digester volume corresponding to the biomass produced was 120 m3 per hectare of algae pond and the methane yield () from anaerobic digestion was 73 m3•d-1.
Źródło:: Journal of Ecological Engineering; 2022, 23, 12; 299--313
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Microalgae Biomass Modelling and Optimisation for Sustainable Biotechnology – A Concise Review
Autorzy:: Ugya, Adamu Yunusa
Meguellati, Kamel
Powiązania:: https://bibliotekanauki.pl/articles/2173353.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioresource
wetland technology
bioremediation
biomass optimisation
Opis:: The autotrophic forms of microalgae are referred to as "efficient biological factories", because they play a significant role in CO2 removal from the atmosphere by utilizing it for the process of photosynthesis. The industrial application of microalgae biomass includes the production of cosmetics, health products, fertilisers, biofuel, feeds, and food. Microalgae biomass is also an important tool used in the treatment of wastewater. The current review is aimed at reviewing the progress and prospects of microalgae resource modelling and optimisation as a tool for sustainable biotechnology. The mechanism of biomass production by microalgae tends to vary according to whether the microalgae are autotrophic, heterotrophic, or mixotrophic organisms. In the current study, the modelling and optimisation of microalgae biomass production were discussed, as well as the modelling of CO2 sequestration, light intensity, nutrients, and photobioreactor. The role of microalgal biomass production in attaining sustainable biotechnology has also been extensively studied. Microalgae are an emerging tool used in the phycoremediation of wastewater and reduction of high CO2 level. The modelling and optimisation of microalgae biomass production will help to upscale the production of the microalgal based fuel and bioproducts from model scale to the money-making level.
Źródło:: Journal of Ecological Engineering; 2022, 23, 9; 309--318
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effective Methods for Reclamation of Area Sources of Dust Emission
Autorzy:: Danilov, A.
Smirnov, Y.
Korelskiy, D.
Powiązania:: https://bibliotekanauki.pl/articles/123609.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: reclamation
bioremediation
dust emissions
technogenic massif
Opis:: This article presents the results of the Shared equipment Center’s work in the field of developing new methods for reclamation of dumps and waste storage sites, including methods for restoring the bioproductivity of clay soils, increasing the fertility of low-fertility soils, or potentially fertile soils, while increasing the protection of reclaimed lands from wind erosion.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 1-7
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A Bioremediation Study of Raw and Treated Crude Petroleum Oil Polluted Soil with Aspergillus niger and Pseudomonas aeruginosa
Autorzy:: Ojewumi, M. E.
Anenih, E. V.
Taiwo, O. S.
Adekeye, B. T.
Awolu, O. O.
Ojewumi, E. O.
Powiązania:: https://bibliotekanauki.pl/articles/124955.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioremediation
Aspergillus niger
Pseudomonas aeruginosa
pollution
Opis:: This study was conducted to investigate the degree of bioremediation that would occur in the samples of soil polluted with raw and treated crude petroleum (oil) with the aid of Aspergillus niger (fungi) and Pseudomonas aeruginosa (bacteria). This was achieved by monitoring the Organic carbon content in the soil over 45 days and pH over 25 days. Four systems of 500 g soil were polluted with 40 g treated crude petroleum, while four systems were contaminated with 40 g raw crude petroleum. The eight systems were labeled accordingly. Two systems for raw crude control and treated crude control (RCC and TCC) were left as control, two systems for raw crude Aspergillus niger and treated crude Aspergillus niger (RCA and TCA) were treated with Aspergillus niger only, two systems for raw crude Pseudomonas aeruginosa and treated crude Pseudomonas aeruginosa (RCP and TCP) were treated with Pseudomonas aeruginosa only and the last two systems for raw crude Aspergillus niger and Pseudomonas aeruginosa (RCAP and TCAP) were treated with both Pseudomonas aeruginosa and Aspergillus niger. At the end of the bioremediation period, the results obtained showed that the pH was not particularly a solid parameter to estimate the degree of bioremediation. This is because a proper trend in the results obtained could not be determined. Additionally, it was observed that Aspergillus niger (fungi) and Pseudomonas aeruginosa (bacteria) alone and separate remediate raw crude polluted soil better than treated crude polluted soil. This was determined by the TOC (Total Organic Carbon) values on the 45th day of the experiment.
Źródło:: Journal of Ecological Engineering; 2018, 19, 2; 226-235
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Removal of Aluminium in Contaminated Soil using Locally Isolated Vibrio alginolyticus
Autorzy:: Purwanti, Ipung Fitri
Kurniawan, Setyo Budi
Simanjuntak, Devita Yulisa
Powiązania:: https://bibliotekanauki.pl/articles/124195.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: aluminium
bacteria
bioremediation
indigenous
Vibrio alginolyticus
Opis:: The aluminium contaminated soil is currently being a concern due to the use of aluminium waste as a material for building roads and river dams in Jombang District, Jawa Timur Province, Indonesia. This application was debated because aluminium waste is categorized as hazardous waste. One widely known method for treating the metal contaminated soil is bioremediation. One potential indigenous bacterial species to remove aluminium, Vibrio alginolyticus was isolated from contaminated soil. A toxicity test to V. alginolyticus showed that this bacterium could grow in aluminium contaminated soil until 100 mg/L equal to 48 mg/kg concentration. The removal of aluminium from soil was conducted by using 50 and 100 mg/L concentration. The result showed that the addition of 2% v/v of V. alginolyticus can remove 5.48% aluminium from 100mg/L contaminated soil initial concentration after 12 days of test period. The addition of V. alginolyticus did not significantly influence the removal of aluminium from contaminated soil (p>0.05).
Źródło:: Journal of Ecological Engineering; 2019, 20, 3; 135-140
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Evaluation of a Wetland Constructed with Typha domingensis Pers., for the Recovery of Contaminated Water from Hospital Effluents
Autorzy:: Peralta, Inocencia
Cardozo, César
Nakayama, Héctor
Ávalos, Claudia
Benítez, Gilberto
Elkhalili, Ryad
Ayala, José
Arenas, Rossana
Samudio-Oggero, Antonio
Powiązania:: https://bibliotekanauki.pl/articles/2173364.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioremediation
Typha domingensis
effluent
pollutant
environment
Opis:: The objective of this research project was to evaluate the implementation of a phytoremediation system for the effluents generated by the National Cancer Institute (INCAN), Central Department, Paraguay to contribute to the management of the liquid waste that it generates. The system consisted of a set of three pools, in which were made up of floating Typha domingensis Pers plants, at an approximate density of 10 plants per m2, all the roots formed a filter, which was in direct contact with the effluent. The effluent was of continuous flow; the flows of entry and exit were regulated according to the generation of liquid waste by INCAN. There were 5 measurements made with an interval of 7 days for each measurement, at a point of entry and exit of the effluent, to determine the system. The parameters evaluated were: BOD5, COD, NTK, PT, pH, temperature, conductivity, turbidity, dissolved oxygen and fecal coliforms. The results showed a considerable reduction of the pollutants generated for all the parameters evaluated, obtaining an efficiency of 67.9 to 92.4% in the evaluated parameters, indicating that it is very feasible to implement this type of systems for phytodepuration of liquid waste.
Źródło:: Journal of Ecological Engineering; 2022, 23, 9; 136--145
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Bioremediation Possibilities of Oil-Contaminated Soil by Biosurfactant Based on Bacillus Strain
Autorzy:: Nedoroda, Vladyslav
Trokhymenko, Ganna
Magas, Nataliya
Powiązania:: https://bibliotekanauki.pl/articles/2173345.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioassay
biodegradation
bioremediation
biosurfactant
petroleum
phytotoxicity
soil
Opis:: This paper represents the results of the investigation of soil phytotoxicity with a high level of oil pollution. The artificially contaminated soils were exposed to an oil-destroying biosurfactant based on the strains of Bacillus amyloliquefaciens and Bacillus subtilis. The main objective of the work was to evaluate the effectiveness of a consortium of microorganisms in reducing the phytotoxicity of soils with high levels of oil contamination. The determination was performed on the reactions of test organisms to the pollution of the soil environment. The test system in the experiment comprised Sorghum bicolor subsp. Drummondii, Phleum pretense, Galéga officinális, Trifolium pretense, Medicágo sativa, and Sinapis arvensis. The variety of the applied indicator plants has provided a comprehensive analysis of the results of oil destruction and allowed an assessment of the sensitivity of the seeds of each species to toxic substances.
Źródło:: Journal of Ecological Engineering; 2022, 23, 8; 49--55
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Study of Oil-Contaminated Soils Phytotoxicity During Bioremediation Activities
Autorzy:: Sivkov, Yuriy
Nikiforov, Artur
Powiązania:: https://bibliotekanauki.pl/articles/1839168.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: soil
pollutant
oil contamination
bioremediation
Secále cereále
Opis:: This work is devoted to studying the dynamics of changes in phytotoxicity of oil-contaminated meadow soils in the process of microbial bioremediation. The research was conducted under laboratory and field conditions. Winter rye (Secále cereále) was selected as the test object. In order to assess the degree of toxicity in the laboratory, the indicators of seed germination – germination rate and germination energy-were determined. In a field experiment, the ecological state of oil-contaminated soils was evaluated by the germination rate and the amount of aboveground plant biomass. The research results showed that the content of petroleum products significantly affected the percentage of germination of rye seeds. There are differences in the size of seedlings for different experimental schemes: in all tests, the average height of cleoptila on polluted soil was less than on unpolluted soil, but at the same time it varied for different experimental bioremediation schemes. The use of potassium humate and modified vermiculite as additives significantly reduced the toxicity of the oil-contaminated soil.
Źródło:: Journal of Ecological Engineering; 2021, 22, 3; 67-72
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Nutrient Absorption and Biomass Production by the Marine Diatom Chaetoceros Muelleri: Effects of Temperature, Salinity, Photoperiod, and Light Intensity
Autorzy:: Minggat, Elizerberth
Roseli, Wardina
Tanaka, Yasuaki
Powiązania:: https://bibliotekanauki.pl/articles/1839548.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: microalgae
bioremediation
wastewater
eutrophication
estuary
brackish water
aquaculture
Opis:: The marine diatom Chaetoceros muelleri is commonly used for aquacultural feed and is well known for its fast growth and easy maintenance. In order to evaluate the potential of C. muelleri to be used for the nutrient removal and biomass production from eutrophic saline wastewaters, the algae were cultured under a wide range of temperature, salinity, photoperiod, and light intensity. The optimum temperature for the biomass production was observed at 30°C, but the algae could maintain at least 66% of the highest production between 20°C and 35°C. The optimum salinity for the biomass production was 25, but the algae could maintain at least 22% of the highest production between 10 and 30. Both light intensity and photoperiod affected the algal biomass production, and the minimum light requirement was considered 100 μmol m−2•s−1 for 6 hours to maintain the biomass production and nitrogen (N) and phosphorus (P) absorption. Throughout all the experiments, the N and P absorption increased with the biomass production, but the ratio of N and P to the biomass exponentially decreased with the biomass production. These results showed that C. muelleri is tolerant to the wide range of environmental conditions, absorbing nutrients and producing organic matter. C. muelleri has a great potential to be introduced in the water treatment processes, especially where the temperature and salinity fluctuate.
Źródło:: Journal of Ecological Engineering; 2021, 22, 1; 231-240
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Bioremediation of Iron on Diamond Post Mining Soil Using Compost Made from Cow Manure and Traditional Market Organic Waste
Autorzy:: Mahyudin, Rizqi Puteri
Firmansyah, Muhammad
Purwanti, Melisa Anggraini
Najmina, Dina
Powiązania:: https://bibliotekanauki.pl/articles/124071.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioremediation
composting
cow manure
Fe
market organic waste
Opis:: The purpose of this research was to improve the diamond post-mining soil quality using a bioremediation composting method based on the cow manure and organic waste from a traditional market. This research was conducted for: 1) identifying the conditions for temperature, pH and moisture during the composting process; 2) analyzing the difference of variations in composition and the best composting durations. The bioremediation method used is open windrow composting, divided into four composition variations, namely variation A (100% soil); B (75% soil: 25% compost); C (50% soil: 50% compost); D (25% soil: 75% compost). The variations of composting duration are 15^th and 30^th days. From the result of two-way ANOVA test, it can be concluded that there is no significant difference in the decrease of Fe value due to the variations in composition ratio and duration of composting.
Źródło:: Journal of Ecological Engineering; 2020, 21, 5; 221-228
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Using Phytoremediation and Bioremediation for Protection Soil Near Graveyard
Autorzy:: Ignatowicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/124281.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: pesticides
phytoremediation
Basket willow (Salix viminalis)
compost
bioremediation
Opis:: The aim of present research was to assess the usefulness of Basket willow (Salix viminalis) to phytoremediation and bioremediation of sorption subsoil contaminated with pesticides. Studies upon purification of sorption material consisting of a soil and composting sewage sludge were conducted under pot experiment conditions. The study design included control pot along with 3 other ones polluted with pesticides. The vegetation season has lasted since spring till late autumn 2015. After acclimatization, the mixture of chloroorganic pesticides was added into 3 experimental pots. After harvest, it was found that pesticide contents in sorption subsoil (from 0.0017 to 0.0087 mg kg DM) were much higher than in control soil (from 0.0005 to 0.0027 mg kg DM). Achieved results initially indicate that Basket willow (Salix viminalis) can be used for reclamation of soils contaminated with pesticides, particularly for vitality prolongation of sorption barrier around the pesticide burial area. In future, it would allow for applying the sorption screen around pesticide burial area, which reduces pesticide migration into the environment, and grown energetic plants – through phytoremediation – would prolong the sorbent vitality and remove pesticides from above ground parts by means of combustion.
Źródło:: Journal of Ecological Engineering; 2016, 17, 3; 87-90
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Carbonized Sorbents of Shungite and Rice Husk for Purification of Petroleum Contaminated Soils
Autorzy:: Ongarbayev, Yerdos
Baigulbayeva, Moldir
Tileuberdi, Yerbol
Ualieva, Perizat
Abdieva, Gulzhamal
Powiązania:: https://bibliotekanauki.pl/articles/2086420.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: shungite
rice husk
carbonization
sorbent
petroleum contaminated soil
purification
bioremediation
Opis:: Contamination of soil and water with petroleum during its extraction, collection, transportation, storage and preparation occurs frequently, and purification of oil spills is one of the pressing environmental problems of oil producing organizations. There are a large number of methods for utilization oil spills. The sorption method in combination with bioremediation is capable of effectively purification of petroleum contaminated soils. The paper shows the possibility of using a carbonized mixture of shungite from the Koksu deposit (Kazakhstan) with rice husk as a sorbent and carrier of microorganism strains. The physicochemical properties and elemental composition, as well as the microstructure of carbonized samples were established. The maximum sorption capacity of carbonized sorbents when purifying the soil samples from oil from the Karazhanbas field was 1.86 g/g after 60 days. The carbonized samples with microorganism strains immobilized on them showed a degree of oil destruction reaching 90%.
Źródło:: Journal of Ecological Engineering; 2022, 23, 5; 16--25
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Przegląd metod remediacji i praktyczne zastosowanie bioremediacji w likwidacji zanieczyszczeń węglowodorami
Review of remediation methods and practical application of bioremediation in the elimination of hydrocarbon contamination
Autorzy:: Wolniewicz, A.
Czechowski, J.
Kaliszewski, T.
Marecik, R.
Powiązania:: https://bibliotekanauki.pl/articles/401458.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: remediacja
substancje ropopochodne
bioaugumentacja
bioremediacja
remediation
oil dervatives substances
bioaugmentation
bioremediation
Opis:: Ze względu na powszechność i dostępność substancji ropopochodnych, stanowią one najczęstszą przyczynę zanieczyszczeń środowiska gruntowo-wodnego. Do usuwania zanieczyszczeń węglowodorami wykorzystuje się zarówno metody fizyczne, chemiczne oraz biologiczne. Porównując powyższe metody, to metody biologiczne są obecnie najczęściej stosowanymi w likwidacji węglowodorów zanieczyszczających środowisko gruntowo-wodne, zarówno w procesach remediacji metodą in-situ, tj. w miejscu występowania zanieczyszczenia jak również w remediacji ex-situ – polegającej na usunięciu zanieczyszczonej ziemi z miejsca skażenia i dalej przetwarzania w procesie odzysku. Metoda biologiczna powiązana z metodami fizycznymi została zastosowana do likwidacji zanieczyszczenia terenu poprzemysłowego zanieczyszczonego wskutek niewłaściwej gospodarki olejami w trakcie jego funkcjonowania oraz po zakończeniu działalności przemysłowej na przedmiotowym terenie. Do biologicznego oczyszczania gleby i ziemi zastosowano biopreparat oparty na bazie mikroorganizmów autochtonicznych. W trakcie realizacji procesu oczyszczania monitorowano spadek zawartości węglowodorów i skuteczność zastosowanego biopreparatu.
Due to the widespread availability of petroleum derivatives, they are the most common cause of soil and water pollution. Physical, chemical and biological methods are used to remove hydrocarbon pollution. Comparing the abovementioned methods, it can be stated that the biological ones are currently the most commonly used in the liquidation of hydrocarbons contaminating the soil and water environment, not only in the in-situ remediation process (in the place of contamination), but also in ex-situ remediation (the removal of contaminated soil from the site contamination and further processing in the recovery process). The biological method associated with physical methods was used to eliminate pollution of post-industrial land contaminated due to unsuitable oil management both during its existence and after the end of industrial activity in the area. For the soil and earth remediation, biopreparation based on indigenous microorganism was used. During the remediation process, the decrease in the hydrocarbon content and the effectiveness of the biopreparation used was observed.
Źródło:: Inżynieria Ekologiczna; 2018, 19, 5; 47-52
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Biosurfactant Produced by Indigenous Bacteria During Composting Process of Crude Oil Polluted Soil: Properties and Role
Autorzy:: Sari, Gina Lova
Trihadiningrum, Yulinah
Ni'matuzahroh
Putra, Suhendra Amka
Kasasiah, Ahsanal
Alim, Muhammad Syahirul
Powiązania:: https://bibliotekanauki.pl/articles/2086413.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioremediation
biosurfactant
composting
hydrocarbon
in-situ bio-based surfactant
polluted soil
Opis:: Bacterial co-metabolism in composting process has been widely used to remove hydrocarbons, aided by in-situ production of bio-based surfactants, in terms of compost humic acid-like substances and biosurfactants. The properties of compost humic acid-like substances have been shown in previous studies as potential surface tension reducers and emulsifiers for hydrocarbons. The current study aimed to analyze the properties of biosurfactant of surface tension decrease, emulsification activity, and hydrocarbon solubilization ability. Four indigenous bacteria consortia were isolated from composted materials of yard waste, rumen residue, crude oil-polluted soil, and the mixture of polluted soil with organic waste (1:1, w/w) at day 0th, 20th, 40th, and 60th. Organic waste consists of yard waste and rumen residue in the ratio of 1:1. The isolated indigenous bacteria consortia were incubated for 7 days in different media, i.e., organic waste extract, 6.00% of crude oil, and a mixture of organic waste extract with 6.00% crude oil. The results indicated that the surface tension decrease and emulsification activity of biosurfactants were 8.35–52.90 mN m-1 and 0.00–12.00%, respectively, which showed the potential as surface tension reducers with low emulsification activity. The higher hydrocarbon solubility was shown by the biosurfactant from the rumen residue (13 620 µg g-1) and the mixture (10 998 µg g-1) at day 40th, which was comparable to 1.50% of Tween 80. The biosurfactants in the current research were produced with the same materials, process, and time as compost humic acid-like substances which acts as in-situ bio-based surfactants. The respective ability to solubilize hydrocarbon might be combined and estimated to be higher than Tween 80 of 24 329 µg g-1 and 21 619 µg g-1 for rumen residue and the mixture, respectively. Therefore, it was concluded that the best composition for in-situ bio-based surfactant production to assist the degradation of hydrocarbon through composting process is polluted soil with organic waste (1:1, w/w). The solubility of hydrocarbons can be increased without synthetic surfactants addition, but through providing nutrients to maintain in-situ bio-based surfactant production with intermittent addition of organic waste every 40 days. This method is expected to be an appropriate approach in composting development as a cost-effective sustainable bioremediation technique for polluted soil.
Źródło:: Journal of Ecological Engineering; 2022, 23, 4; 297--314
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Bacterial population dynamics in waste oily emulsions from the metal-processing industry
Autorzy:: Kaszycki, P.
Supel, P
Petryszak, P.
Powiązania:: https://bibliotekanauki.pl/articles/123623.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: bioremediation
biostimulation
oily emulsions
petroleum-derived contaminants
autochthonous microorganisms
microbial consortia
Opis:: Oil-containing wastewaters are regarded as main industrial pollutants of soil and water environments. They can occur as free-floating oil, unstable or stable oil-in-water (O/W) emulsions, and in the case of extreme organic load, as water-in-oil (W/O) emulsions. In this study two types of oily effluents, a typical O/W emulsion marked as E1 and a W/O emulsion E2, both discharged by local metal processing plants were examined to test their toxicity to microbial communities and the ability to serve as nutrient sources for bacterial growth. The organic contaminant load of the samples was evaluated on the basis of chemical oxygen demand (COD) parameter values and was equal to 48 200 mg O₂dm^-3 and >300 000 mg O₂dm^-3 for E1 and E2, respectively. Both emulsions proved to be non toxic to bacterial communities and were shown to contain biodiverse autochthonous microflora consisting of several bacterial strains adapted to the presence of xenobiotics (the total of 1.36 106 CFU cm^-3 and 1.72 10⁵ CFU cm^-3 was determined for E1 and E2, respectively). These indigenous bacteria as well as exogenously inoculated specialized allochthonous microorganisms were biostimulated so as to proliferate within the wastewater environment whose organic content served as the only source of carbon. The most favorable cultivation conditions were determined as fully aerobic growth at the temperature of 25 ºC. In 9 to 18 day-tests, autochthonous as well as bioaugmented allochthonous bacterial population dynamics were monitored. For both emulsions tested there was a dramatic increase (up to three orders of magnitude) in bacterial frequency, as compared to the respective initial values. The resultant high biomass densities suggest that the effluents are susceptible to bioremediation. A preliminary xenobiotic biodegradation test confirmed that mixed auto- and allochthonous bacterial consortia obtained upon inoculation of the samples with microbiocenoses preselected for efficient hydrocarbon biodegradation led to a decrease in the organic pollution level.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 14-22
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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