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    Wyświetlanie 1-6 z 6
    Tytuł:
    Gravimetric Evolution During Sewage Sludge Biostabilization
    Autorzy:
    Posligua, P.
    Peñaherrera, M.
    Villegas, E.
    Banchón, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/124697.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    pathogens
    biosolids
    sewage
    mesophilic
    anaerobic
    Opis:
    Sewage sludge is a by-product in the wastewater treatment and is an inherent hazardous issue because of the pathogenic contamination of natural resources. Therefore, in this study, domestic sludge was treated with premontane forest soil, macronutrients, and also pasteurization to reduce the content of volatile solids and pathogens. The best biostabilization treatment using premontane forest soil and pasteurization obtained a volatile solids reduction of 87% according to the environmental regulations, in which a biosolid is stable in a range of 38% of volatile solids reduction. In less than 30 days in a mesophilic range, the coliform count was reduced up to 71% when using forest soil and pasteurization. Thus, a biosolid-class B was obtained using gravimetric means as a platform to promote fast quality control.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 5; 76-85
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Proximate Analysis and Calorific Value of Pellets in Biosolid Combined with Wood Waste Biomass
    Autorzy:
    Sukarta, I. N.
    Sastrawidana, I. D. K.
    Ayuni, N. P. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/124963.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    biosolids
    pellets
    proximate value
    calorific value
    Opis:
    In this study, biosolid and wood waste biomass were used as fuel by turning them into fuel pellets. The purpose of making fuel pellets with various compositions was to compare the type of biosolid pellets and wood waste in terms of proximate testing. The benefits of making biosolid pellets can reduce the landfill waste that contributes to the environmental pollution. The results of this research showed the highest water content that is equal to 10.07% was found in the wood waste pellets with the composition of (90:10; the highest ash content, amounting to 33.19% was found in the pellets with the composition of (50:50); the highest value of volatile substances (74.05%) was contained in pellets with the composition (90:10); the highest value of solid carbon (10.13%) was found in the pellets with the composition of (80:20) Meanwhile, the highest calorific value was exhibited by the pellets with the composition of wood waste and biosolid (90:10), equalling 3.822 cal/g.
    Źródło:
    Journal of Ecological Engineering; 2018, 19, 3; 185-190
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dry Biosolids Reuse as Costless Biodegradable Adsorbent for Cadmium Removal from Water Systems
    Autorzy:
    Ammari, Tarek G.
    Al-Hadidi, Majida
    Al-Kharabsheh, Noor
    Khater, Dima
    Abu-Romman, Saeid
    Powiązania:
    https://bibliotekanauki.pl/articles/1838412.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    adsorption
    Cd-contaminated environment
    untreated biosolids
    intraparticle difusion model
    Langmuir isotherm model
    Opis:
    The recycling of untreated dry biosolids, as costless biodegradable adsorbent for the removal of cadmium from aqueous phase was characterized. The adsorption of cadmium was reported to depend on initial pH, adsorbent dose, agitation time, and initial Cd concentration. The results of the batch experiments revealed that the maximum adsorption capacity of the untreated dry biosolids was 39.22 mg g-1 under optimum operating conditions (i.e. pH: 5, adsorbent dose: 2 g l-1, contact time: 16h). Adsorption reaches equilibrium after 16h, which can be attributed to both external surface adsorption (R2 = 0.86) and intraparticle dif usion (R2 = 0.98). The Langmuir isotherm model best described cadmium adsorption (R2 = 0.99) and the pseudo-second-order kinetic model was obeyed, suggesting that the mechanism involved was chemisorption. Biodegradability would make the recovery of adsorbed Cd an environmentally friendly process. Comparing the obtained findings with the related published results, it can be concluded that treating biosolids might be an unnecessary and costly procedure for recycling biosolids as an adsorbent for cadmium.
    Źródło:
    Journal of Ecological Engineering; 2021, 22, 5; 1-12
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phytoremediation of nitroglycerin in smokeless powders
    Autorzy:
    Asbaghi, N.
    Pichtel, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/363252.pdf
    Data publikacji:
    2012
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    bioremediacja
    kompostowany osad czynny
    owies
    ryzosfera
    turzyca
    bioremediation
    biosolids
    oats
    rhizosphere
    sedge
    Opis:
    The reported study evaluated the feasibility of rhizosphereenhanced phytoremediation in the removal of nitroglycerin (NG), as applied in commercial smokeless powder (SP), from soil. Double base smokeless powder was applied to soil mesocosms at rates of 0, 1, 5 and 10% (w/w). The mesocosms were seeded with oats (Avena sativa) or planted with live sedge plants (Carex vulpinoidea). Composted biosolids (20% w/w) were used as a soil treatment. Mesocosms were sampled at 7, 14, 30, and 60 days after initial planting. Determination of residual soil NG was performed using gas chromatography with an electron capture detector. Both plant species were capable of modest NG uptake (146.0 and 87.5mg·kg-1 for sedge and oat, respectively at the 10% SP rate). Only modest quantities of NG removal were accounted for by abiotic processes such as soil sorption. Soil bacterial numbers remained relatively constant regardless of rate of SP application. Microbial activity in the plant rhizosphere was concluded to be the major contributor to NG solubilization and decomposition. Addition of composted biosolids to soil imparted a positive effect in NG decomposition and/or removal from soil. Additional study is needed to determine long-term decomposition of smokeless powder and subsequent NG reactions in soil.
    Źródło:
    Environmental Biotechnology; 2012, 8, 2; 45-54
    1734-4964
    Pojawia się w:
    Environmental Biotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemofitostabilizacja gleby zanieczyszczonej kadmem, cynkiem i ołowiem
    Chemophytostabilisation of Soil Contaminated with Cadmium, Lead and Zinc
    Autorzy:
    Grobelak, A.
    Kacprzak, M.
    Grosser, A.
    Napora, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819023.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    chemofitostabilizacja
    gleba
    metale ciężkie
    heavy metals
    amendments
    bioavailability
    biosolids
    immobilization
    stabilization
    remediation
    mobility
    compost
    zn
    Opis:
    Assisted phytostabilisation involves the use of plants and soil additives for physical stabilization of the soil and chemical immobilization of contaminants. This technique aims to establish a vegetation cover with metal-tolerant plants and thus reduce leaching of metals. The main aim is to reduce the risk of incorporation of metal into the food chain. In the conducted experiment contaminated soil was collected from the area surrounding a zinc smelter in Miasteczko Slaskie, in the Silesia region of Poland. Soil in the study area has been contaminated with metals, especially Cd, Pb and Zn. Moreover, soils of the study area are also acidified. The role of sewage sludge and inorganic amendments as an immobilising agents in the attenuating phytostabilisation of metal-contaminated soil was evaluated using grass species Festucaarundinacea Schreb. The biosolid used was anaerobically digested sewage sludge, collected from the industrial waste water treatment plant and juices manufacturer (food industry). The soil was mixed with sewage sludge (sewage sludge accounted for 1and 3% of dry weight), lime and inorganic fertilizers (potassium phosphate, TSP at 0.8% each). A plant growth experiment was conducted in a growth chamber for 10 weeks. The plants were grown under artificial conditions, suitable for proper growth of plants. Plants growing on amended soil were devoid of any macroscopic symptoms of metal toxicity or nutrient deficiency, in contrast to plants grown on non-amended soil, where growth was inhibited and some phytotoxic effects were observed. For amended soil, plant growth was most likely influenced by improved soil conditions due to nutrient-rich amendments and metals immobilisation. Mobile fractions of metals decreased in amended soil, and the same pattern was observed for metal concentrations in plant tissues. However, the best results were obtained for the variants of combined application of sewage sludge and inorganic amendments. All investigated metals accumulated mainly in root tissues in combination with sewage sludge application. A significant reduction in metal uptake by plants was achieved after sewage sludge application, which is attributed to decreased bioavailability and the stabilisation of metals in soil. In the experiment the introduction of soil liming treatment allowed to maintain the pH at a constant level after 10 weeks of the experiment (5.5–7) (Fig. 1). The K5-K10 variants achieved a significant reduction in bioavailable forms (0.01 M CaCl2 extraction). In a study of biomass (Fig. 3) the highest yield (5.5 g DM) was obtained for the combined use of a combination of potassium and phosphate deposits and combinations of superphosphate and combined use of sewage sludge (2.5 g DM/pot). The highest immobilization effects were obtained for combined application of sewage sludge, lime fertilizer and superphosphate or potassium phosphate as compared to other options. The highest degree of immobilization of three tested heavy metals: cadmium, zinc and lead was obtained only with the application of sewage sludge and mineral amendments at a dose of TW +FP 0.8% + 1% d.m. sewage sludge. Effective process of chemophytostabilisation with the use of grass and organic additive and inorganic additives in situ sandy areas and heavily contaminated with heavy metals, can be obtained solely with the combined use of investigated additives and treatment.
    Źródło:
    Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 2; 1982-2002
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ nawożenia osadem ściekowym i bioodpadami na zawartość metali ciężkich w nasionach gorczycy białej
    The influence of fertilization with sewage sludge and biosolids on heavy metal content in white mustard seeds
    Autorzy:
    Wołejko, E.
    Wydro, U.
    Łazowska, M.
    Kazanowska, J.
    Jabłońska-Trypuć, A.
    Łoboda, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/400501.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    bioodpady
    metale ciężkie
    osad ściekowy
    Sinapis alba
    gorczyca biała
    biosolids
    sewage sludge
    heavy metals
    white mustard
    Opis:
    Celem przeprowadzonych badań była ocena wpływu nawożenia osadem ściekowym oraz bioodpadami na zawartość metali ciężkich w nasionach gorczycy białej (Sinapis alba). Badania prowadzone były w 2012 r na poletkach doświadczalnych PWSZ w Suwałkach. Każdą z powierzchni badawczych podzielono na 3 bloki o powierzchni 18 m2 każdy, stanowiące kolejne powtórzenia. Do nawożenia obiektów badawczych zastosowano trzy różne warianty nawozowe: K1 – osad ściekowy, K2 – osad ściekowy poddany procesowi kompostowania wraz z trzymiesięcznym kompostem odpadów organicznych i K3 – osad ściekowy poddany procesowi kompostowania wraz z trzymiesięcznym kompostem odpadów organicznych z preparatem biologicznym Trigger-4. Określono podstawowe właściwości fizykochemiczne, mikrobiologiczne i parazytologiczne osadów ściekowych, zgodnie z wymogami Rozporządzenia Ministra Środowiska z dnia 13 lipca 2010 r. Dz.U. 2010 nr 137 poz. 924 w sprawie komunalnych osadów ściekowych. W ziarnach gorczycy rosnącej na poszczególnych wariantach nawozowych oznaczono zawartość metali ciężkich takich jak Cd, Cu, Mn, Ni, Pb, Zn. Na podstawie otrzymanych wyników stwierdzono, że zawartości kadmu w nasionach gorczycy wahała się od 0,20 mg/kg s.m. w wariancie K3 do 0,93 mg/kg s.m. w wariancie K1. Z kolei zawartość ołowiu mieściła się w granicach od 0,30 do 4,25 mg/kg s.m., co oznacza że żadna z analizowanych próbek nie spełnia normy zawartości ołowiu i kadmu zawartej w rozporządzeniu Ministra Zdrowia z dnia 13 stycznia 2003 r. Przeprowadzona analiza statystyczna wykazała, że zawartość ogólna Cd w ziarnie gorczycy była istotnie ujemnie skorelowana z zawartością Ni i Zn (odpowiednio, r = -0,89 i r = -0,54) przy p ≤ 0,05. Zaobserwowano również istotną dodatnią korelację pomiędzy odczynem gleby a zawartością metali w nasionach gorczycy. Wartość pH była istotnie skorelowana z Ni (r = 0,60) i Zn (r = 0,55) przy p ≤ 0,05.
    The aim of the study was to evaluate the influence of fertilization with sewage sludge and biosolids on heavy metal content in white mustard (Sinapis alba) seeds. The study was conducted in 2012 on experimental plots in the State Higher Vocational School in Suwałki. Each research area was divided into 3 blocks 18 m 2 each, constituting repetitions. The test areas were fertilized with three different fertilization variants with sewage sludge biosolids: K1 – sewage sludge, K2 – sludge subjected to a process of composting with a three-month compost organic waste and K3 – sludge subjected to the composting process with a three-month compost organic waste from the biological preparation Trigger – 4. The samples of sewage sludge were collected for the analysis and one determined its basic physical, chemical, microbiological and parasitological properties, in accordance with the requirements of the Decree of the Minister of the Environment of July 13th 2010 on municipal sewage sludge (Journal of Laws of 2010 No 137 item. 924). Based on these results, it was found that the cadmium concentrations in the seeds mustard ranged from 0.2 mg/kg s.m. on plots with the variant K3 to 0.93 mg/kg s.m. in the variant K1. On the other hand, lead content ranged from 0.3 to 4.25 mg/kg s.m. which shows that none of the analyzed samples met the standards for lead and cadmium contained in the Decree of the Minister of Health of January 13th 2003. The statistical analysis indicated that the concentrations of Cd in mustard seed was significantly correlated with the concentrations of Ni and Zn (respectively, r = -0.89 and r = -0.54). There were significant positive correlations between soil pH and metal concentrations in the seeds of mustard. The pH was significantly correlated with Ni (r = 0.60) and Zn (r = 0.55) at a p ≤ 0.05.
    Źródło:
    Inżynieria Ekologiczna; 2017, 18, 3; 122-128
    2081-139X
    2392-0629
    Pojawia się w:
    Inżynieria Ekologiczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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