Zobrazeno 1 - 10
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pro vyhledávání: '"P Aarne Vesilind"'
Complex environmental problems are often reduced to an inappropriate level of simplicity. While this book does not seek to present a comprehensive scientific and technical coverage of all aspects of the subject matter, it makes the issues, ideas, and
Autor:
Jamie R. Hendry, P. Aarne Vesilind
Publikováno v:
IEEE Engineering Management Review. 38:54-63
Corporate references to “sustainability” and the operative process of “green business” have become almost commonplace over the past decade. Companies not only seek to comply with environmental regulations, but many have discovered that techni
Autor:
Banu Örmeci, P. Aarne Vesilind
Publikováno v:
Water Research. 35:4299-4306
Freeze-thaw conditioning effectively dewaters alum and activated sludges, but it works better on alum sludge than it does on activated sludge. The main difference between alum sludge and activated sludge is that activated sludge has high concentratio
Autor:
Tsau-don Tsai, P. Aarne Vesilind
Publikováno v:
Journal of Environmental Science and Health, Part A. 34:103-124
In this research, lime‐treated montmorillonite clay is used to adsorb Zn(II) in a wide range of Zn(II) concentrations. Batch test results show that the adsorption of Zn(II) by montmorillonite appears to be dominated by different adsorption mechanis
Autor:
Cheng-Chao Hsu, P. Aarne Vesilind
Publikováno v:
Water Science and Technology. 36:87-91
Water in sludge appears to be of four kinds; free water which freezes at normal freezing temperatures; interstitial water, which freezes at lower temperature due to high dissolved solids concentrations; vicinal water which is associated with solid su
Autor:
Thomas B. Ramsey, P. Aarne Vesilind
Publikováno v:
Waste Management & Research: The Journal for a Sustainable Circular Economy. 14:189-196
Two operational problems that plague the multiple hearth furnace (MHF) are the frequent need for supplementary fuel to maintain the incineration process, and emission of volatile compounds from the incinerator. Sludge is exposed to elevated drying te
Autor:
P. Aarne Vesilind, Joyce K. Smith
Publikováno v:
Water Research. 29:2621-2626
The dilatometric technique is used to measure bound water in aerobically digested sludge. It is found that air liberated from the sludge sample during the freezing of the sludge water affects the quantity of unfrozen water (interpreted as bound water
Publikováno v:
Water Research. 28:2393-2398
Freezing and thawing sludge has become an economically feasible technique of sludge conditioning in regions where natural freezing is available. Even though the dramatic effects of freeze/thaw on dewatering have been studied extensively, its effects
Autor:
P. Aarne Vesilind
Publikováno v:
Water Environment Research. 66:4-11
While the dewatering of wastewater sludges has received considerable research attention, it has been assumed that the water continuum surrounding the sludge particles has the physical properties of bulk water. This paper suggests that such an assumpt
Publikováno v:
Waste Management & Research. 11:507-513
The chief characteristic that determines the quantity of energy recoverable from the combustion of mixed waste paper (MWP) is the thermal energy of the material as measured by a bomb calorimeter. Mixed waste paper can be divided into 11 groups, accor