Combustion Characteristics of Dried Sewage Sludge and Control of Trace-Metal Emission

2005 ◽  
Vol 19 (6) ◽  
pp. 2298-2303 ◽  
Author(s):  
Hong Yao ◽  
Ichiro Naruse
Clean Air ◽  
2004 ◽  
Vol 5 (3) ◽  
pp. 323-331
Author(s):  
Ichiro Naruse ◽  
Hong Yao ◽  
Hirofumi Minato ◽  
Noboru Saito ◽  
Tadanaga Kohama

Author(s):  
Joana Freitas Campana ◽  
Kaio Pandolfi Pessotti ◽  
Carlos Eduardo Silva Abreu ◽  
Patrick de Jesus

1983 ◽  
Vol 15 (1) ◽  
pp. 77-87 ◽  
Author(s):  
Hugh Fish

A broad summary is made of the U.K. experience in sea-disposal of sewage sludge, embracing operations and effects, and control mechanisms, at disposal authority, national and international levels. The conclusion is reached that U.K. practice, while not perfect and in need of more research, is satisfactory and could be extended without causing environmental damage.


2017 ◽  
pp. 836-853
Author(s):  
N. Suchkova ◽  
E. Darakas ◽  
J. Ganoulis ◽  
Y. Vergeles

In this work the suitability of several plant species for phytoremediation under natural and artificially installed conditions was studied. Brassica napus, Medicago sativa, Zea mays, Triticum aestivum, and Hordeum vulgare were grown in pots with sewage sludge from Sindos Main WWTP in Thessaloniki and from Sindos Industrial WWTP in Thessaloniki, Greece. The first series of experiments included comparing measurements of various parameters for the above mentioned plants and the sludge to those for control samples (the same plants growing in compost). It was shown that shoot growth was less reduced in T. aestivum and H. vulgare than in the other plant species studied. B. napus had lower germination tax, followed by M. sativa with the lowest germination tax. Generally B. napus, giving less biomass production than Z. mays and T. aestivum, is characterised by a higher ability to accumulate heavy metals like Cd, Cu, Ni, Pb, Zn, Cr, As and Hg. The second series of experiments included comparing measurements of various parameters of B. napus grown in sludge and treated each 7 days with metal solutions of Ni, Zn and Pb containing 10-2mg/l, 10-4mg/l, 10-6mg/l of each metal, to those for control plants treated with double distilled water. Results showed that shoot growth of B. napus were increased at treatments with lower concentrations of metals (10-6 mg/l) and control (treatment with d-distilled water). At the same time uptake of metal ions was increased with the concentration of the solution, i.e. at higher concentrations (10-2 mg/l). It is truly for Pb and Zn, transfer coefficient TC of which (indicates a plant’s potential to concentrate a metal) was quite high 15 % and 7 % correspondingly. It was noticed that B. napus has high ability to accumulate Cr, from the other hand it did not accumulate Ni (at present case).


2009 ◽  
Vol 2009.84 (0) ◽  
pp. _5-26_
Author(s):  
Takahiro MURAKAMI ◽  
Akio KITAJIMA ◽  
Yoshizo SUZUKI ◽  
Hidekazu NAGASAWA ◽  
Takafumi YAMAMOTO ◽  
...  

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3436 ◽  
Author(s):  
Guan-Bang Chen ◽  
Samuel Chatelier ◽  
Hsien-Tsung Lin ◽  
Fang-Hsien Wu ◽  
Ta-Hui Lin

Co-combustion technology can be a gateway to sewage sludge valorization and net CO2 reduction. In this study, combustion characteristics of sewage sludge, Australian black coal, shiitake substrate, and their blends were analyzed via thermogravimetric analysis (TGA) coupled with Fourier transform infrared spectroscopy. The ignition temperature, burnout temperature, flammability index (C), and combustion characteristics index (S) of the fuels and their respective blends were estimated. Kinetic parameters were also estimated using the Coats-Redfern method. The results showed that the oxidation of the blends had two distinct stages. Synergistic effects existed for all the blends, with negative ones occurring at temperatures between 300 and 500 °C and positive ones during the char oxidation period. In the first oxidation stage, both C and S indexes increased with sludge addition to the coal. However, they decreased with sludge addition in the final oxidation stage. The catalytic effect of the sludge and the shiitake was pronounced in the final oxidation stage and it resulted in a decrease of activation energy. As for the pollutant emissions, the results showed that NOx and SO2 emissions decreased for 25 wt.% sludge addition to the coal. For the sludge-shiitake blends, NOx and SO2 emissions decreased with increasing shiitake addition. The single-pellet combustion results showed that ignition delay time reduced with increasing sludge/coal ratio but increased with increasing sludge/shiitake ratio. The volatile combustion duration decreased with the addition of sludge and total combustion time decreased sharply with increasing sludge ratio.


2004 ◽  
Vol 2004.14 (0) ◽  
pp. 216-219
Author(s):  
Yoshizo SUZUKI ◽  
Shuichi OCHI ◽  
Tomoyuki NOJIMA ◽  
Masaki KATAOKA ◽  
Minoru TSUKAMOTO

2008 ◽  
Vol 2008.83 (0) ◽  
pp. _8-20_
Author(s):  
Takahiro MURAKAMI ◽  
Yoshizo SUZUKI ◽  
Hidekazu NAGASAWA ◽  
Takafumi YAMAMOTO ◽  
Takami KOSEKI ◽  
...  

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