Isolation and characterization of Arthrobacter sp. from activated sludge of a pulp and paper mill

1999 ◽  
Vol 33 (4) ◽  
pp. 947-950 ◽  
Author(s):  
David Paris ◽  
Roland Blondeau
Keyword(s):  
Activated Sludge ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Isolation And Characterization

Mutagenicity in Pulp and Paper Mill Effluents and in Recipient

1988 ◽  
Vol 20 (2) ◽  
pp. 143-152 ◽  
Author(s):  
A. Langi ◽  
M. Priha
Keyword(s):  
Activated Sludge ◽  
Mutagenic Activity ◽  
Chinese Hamster Ovary Cells ◽  
Chinese Hamster ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Sludge Treatment ◽  
Paper Mill Effluents ◽  
Kraft Mill

The mutagenic properties of pulp and paper mill effluents were studied in three mills: bleached kraft mill with aerated lagoon treatment (Mill 1), bleached kraft mill with activated sludge treatment (Mill 2) and mechanical pulp/paper mill (Mill 3). Both treated and untreated effluents, process streams and molecular fractions were tested for mutagenicity (Ames test. Salmonella typhimurium TA100 and SCE sister chromatid exchange test, Chinese hamster ovary cells). To verify the potential environmental effects the mutagenic activity of concentrated recipient lake water (Mill 2) was also studied. The Ames mutagenicity of the bleached kraft mill effluent (BKME) originated from the first chlorination filtrate, SCE mutagenicity also occurred in the alkali extraction stage filtrate (Mill 1). No Ames mutagenicity was detected in the paper mill effluent, but it was SCE mutagenic. Activated sludge treatment of BKME removed both Ames and SCE mutagenicity, but the aerated lagoon treated BKME was still SCE mutagenic. No mutagenic activity was detected in the recipient water concentrates.

scholarly journals Thermal characterization of hydrated eco-friendly clinkers produced from pulp and paper mill waste

Cerâmica ◽  
2018 ◽  
Vol 64 (371) ◽  
pp. 311-317 ◽  
Author(s):  
L. Simão ◽  
N. J. Lóh ◽  
D. Hotza ◽  
F. Raupp-Pereira ◽  
J. A. Labrincha ◽  
...  
Keyword(s):  
Thermal Characterization ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Industrial Wastes ◽  
Pulp And Paper Mill ◽  
Paper Mills ◽  
Bet Analysis ◽  
Alternative Materials ◽  
Clinker Production

Abstract Industrial wastes from pulp and paper mills are potentially useful materials to use as alternative materials in clinker production. In this study, eco-friendly clinkers were obtained using only waste as feedstock. Eco-friendly clinker with different C3S and C2S contents were produced and hydrated for 7 days at 40 °C, or for 28 and 90 days at room temperature. The potentialities of these waste and the products obtained were revealed through chemical (XRF), thermal (DTA/TG) and surface area (BET) analysis. For comparison, a common ordinary Portland cement (OPC) was tested. As expected, the hydration rate of formulations presenting higher C3S content was higher, generating higher amounts of Ca(OH)2. Furthermore, the amount of Portlandite formed was lower when compared to OPC.

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