Fractionation of Dry Recycled Papermill Sludge to Higher Value Components

2007 ◽  
Vol 1 (3) ◽  
pp. 315-322 ◽  
Author(s):  
S. Krigstin ◽  
M. Sain
Keyword(s):  
Papermill Sludge

Field Consolidation of High Ash Papermill Sludge

1974 ◽  
Vol 100 (3) ◽  
pp. 309-327
Author(s):  
Robert P. Vallee ◽  
Orlando B. Andersland
Keyword(s):  
Papermill Sludge

BLEACHED, PRIMARY PAPERMILL SLUDGE EFFECT ON BERMUDAGRASS GROWN ON A MINE SOIL

Soil Science ◽  
1994 ◽  
Vol 157 (6) ◽  
pp. 389-397 ◽  
Author(s):  
SAM E. FEAGLEY ◽  
MARYLOU S. VALDEZ ◽  
WAYNE H. HUDNALL
Keyword(s):  
Mine Soil ◽  
Papermill Sludge

Characterisation and evaluation of biochars for their application as a soil amendment

Soil Research ◽  
2010 ◽  
Vol 48 (7) ◽  
pp. 516 ◽  
Author(s):  
Balwant Singh ◽  
Bhupinder Pal Singh ◽  
Annette L. Cowie
Keyword(s):  
Surface Charge ◽  
Soil Amendment ◽  
Pyrolysis Temperature ◽  
Surface Acidity ◽  
Ash Content ◽  
Water Soluble ◽  
Soluble Salts ◽  
Total N ◽  
Surface Basicity ◽  
Papermill Sludge

Biochar properties can be significantly influenced by feedstock source and pyrolysis conditions; this warrants detailed characterisation of biochars for their application to improve soil fertility and sequester carbon. We characterised 11 biochars, made from 5 feedstocks [Eucalyptus saligna wood (at 400°C and 550°C both with and without steam activation); E. saligna leaves (at 400°C and 550°C with activation); papermill sludge (at 550°C with activation); poultry litter and cow manure (each at 400°C without activation and at 550°C with activation)] using standard or modified soil chemical procedures. Biochar pH values varied from near neutral to highly alkaline. In general, wood biochars had higher total C, lower ash content, lower total N, P, K, S, Ca, Mg, Al, Na, and Cu contents, and lower potential cation exchange capacity (CEC) and exchangeable cations than the manure-based biochars, and the leaf biochars were generally in-between. Papermill sludge biochar had the highest total and exchangeable Ca, CaCO3 equivalence, total Cu, and potential CEC, and the lowest total and exchangeable K. Water-soluble salts were higher in the manure-based biochars, followed by leaf, papermill sludge, and wood biochars. Total As, Cd, Pb, and polycyclic aromatic hydrocarbons in the biochars were either very low or below detection limits. In general, increase in pyrolysis temperature increased the ash content, pH, and surface basicity and decreased surface acidity. The activation treatment had a little effect on most of the biochar properties. X-ray diffraction analysis showed the presence of whewellite in E. saligna biochars produced at 400°C, and the whewellite was converted to calcite in biochars formed at 550°C. Papermill sludge biochar contained the largest amount of calcite. Water-soluble salts and calcite interfered with surface charge measurements and should be removed before the surface charge measurements of biochar. The biochars used in the study ranged from C-rich to nutrient-rich to lime-rich soil amendment, and these properties could be optimised through feedstock formulation and pyrolysis temperature for tailored soil application.

Papermill Sludge, Phosphorus, Potassium, and Lime Effect on Clover Grown on a Mine Soil

1994 ◽  
Vol 23 (4) ◽  
pp. 759-765 ◽  
Author(s):  
S. E. Feagley ◽  
M. S. Valdez ◽  
W. H. Hudnall
Keyword(s):  
Mine Soil ◽  
Papermill Sludge

Soil enzyme activities following paper sludge addition in a winter cabbage-sweet corn rotation

2000 ◽  
Vol 80 (1) ◽  
pp. 91-97 ◽  
Author(s):  
B. Gagnon ◽  
R. Lalande ◽  
R. R. Simard ◽  
M. Roy
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
Phosphatase Activity ◽  
Acid Phosphatase Activity ◽  
Sweet Corn ◽  
Soil Enzyme ◽  
Phosphatase Activities ◽  
Arylsulfatase Activity ◽  
Papermill Sludge ◽  
Soil Acid Phosphatase

Combined primary and secondary papermill sludge (PS) is a good source of C and other nutrients for soils devoted to intensive horticultural production. A field study was conducted to evaluate the effect of PS, spring-applied alone or in combination with ammonium nitrate (AN), on the enzymatic activity of a Bedford clay (Humic Gleysol) in the province of Québec, Canada. The experiment was started in 1996 with winter cabbage (Brassica oleracea var. capitata L.) and continued in 1997 and 1998 on the same plots with sweet corn (Zea mays L.). The PS was applied at 0 (control), 8, 16, 32 and 65 Mg ha−1 in 1996 and at 44% of these rates in 1997. No sludge was applied in 1998. Additional treatments consisted of AN applied yearly at 100% of the plant N requirements and a PS and AN combination. Soil arylsulfatase and acid and alkaline phosphatase activities were measured at three different times in each growing season. The PS rate linearly increased the soil acid phosphatase activity in all 3 yr. In contrast, the alkaline phosphatase and arylsulfatase activities were enhanced in 1997 by the 8–16 Mg PS ha−1 treatments, whereas larger amounts of PS showed activity comparable to the control. The second PS application promoted phosphatase activities mostly in fall, but did not sustain arylsulfatase activity. The AN gave lower phosphatase activities than PS, and depressed arylsulfatase. Addition of AN to PS increased only acid phosphatase activity as compared with PS alone or the control. This study indicated that addition of PS improved enzyme activity of this horticultural soil but rates in excess to 32 Mg ha−1 may be detrimental. Key words: Papermill sludge, soil enzyme, cabbage, corn

Application of rumen microorganisms for a high rate anaerobic digestion of papermill sludge

1990 ◽  
Vol 32 (3) ◽  
pp. 169-179 ◽  
Author(s):  
Huub J. Gijzen ◽  
Piet J.L. Derikx ◽  
Godfried D. Vogels
Keyword(s):  
Anaerobic Digestion ◽  
High Rate ◽  
Rumen Microorganisms ◽  
Papermill Sludge
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