Waste Minimization by Process Modification

1992 ◽  
pp. 25-43 ◽  
Author(s):  
J. R. Hopper ◽  
C. L. Yaws ◽  
T. C. Ho ◽  
M. Vichailak ◽  
A. Muninnimit
Keyword(s):  
Waste Minimization ◽  
Process Modification

Waste minimization by process modification

1991 ◽  
Vol 28 (1-2) ◽  
pp. 239
Author(s):  
JackR. Hopper ◽  
CarlL. Yaws
Keyword(s):  
Waste Minimization ◽  
Process Modification

Waste minimization by process modification

1994 ◽  
Vol 14 (3-4) ◽  
pp. 349-350 ◽  
Author(s):  
Jack R. Hopper ◽  
Carl L. Yaws
Keyword(s):  
Waste Minimization ◽  
Process Modification

Waste minimization by process modification

1993 ◽  
Vol 13 (5-7) ◽  
pp. 525
Author(s):  
Jack R. Hopper ◽  
Carl L. Yaws
Keyword(s):  
Waste Minimization ◽  
Process Modification

Waste minimization by process modification

1996 ◽  
Vol 15 (1) ◽  
pp. 56-61 ◽  
Author(s):  
D. U. van der Helm ◽  
K. A. High
Keyword(s):  
Waste Minimization ◽  
Process Modification

Waste minimization by process modification

1993 ◽  
Vol 13 (1) ◽  
pp. 3-14 ◽  
Author(s):  
J.R. Hopper ◽  
C.L. Yaws ◽  
T.C. Ho ◽  
M. Vichailak
Keyword(s):  
Waste Minimization ◽  
Process Modification

Polysulfide-borohydride modification of southern pine alkaline pulping integrated with hydrothermal pre-extraction of hemicelluloses

TAPPI Journal ◽  
2011 ◽  
Vol 10 (7) ◽  
pp. 9-16
Author(s):  
SUNG-HOON YOON ◽  
HARRY CULLINAN ◽  
GOPAL A. KRISHNAGOPALAN
Keyword(s):  
Loblolly Pine ◽  
Sodium Borohydride ◽  
Kraft Pulping ◽  
Hot Water ◽  
Pulp Yield ◽  
Paper Strength ◽  
Southern Pine ◽  
Two Stage ◽  
Simultaneous Treatment ◽  
Process Modification

We studied three process modifications to investigate their effects on the property and yield recovery capabilities of kraft pulping integrated with hemicellulose pre-extraction of southern pine. Loblolly pine chips were pre-extracted with hot water until the sugar extraction yield reached the targeted value of 10% and then subjected to conventional and modified kraft pulping. Modification included polysulfide pretreatment; polysulfide-sodium borohydride dual pretreatment, and polysulfide followed by polysulfide-sodium borohydride dual pretreatment two-stage pretreatments prior to kraft pulping. In the first modification, about 5% of the lost pulp yield (total 7%) caused by hemicellulose pre-extraction could be recovered with 15%-20% polysulfide pretreatment. Complete recovery (7%) was achieved with simultaneous pretreatment using 15% polysulfide and 0.5% sodium borohydride with 0.1% anthraquinone in polysulfide-sodium borohydride dual pretreatment. Two-stage pretreatment using recycled 15% polysulfide followed by simultaneous treatment of 6% polysulfide and 0.4%–0.5% sodium borohydride with 0.1% anthraquinone also achieved 100% yield recovery. Continuous recycling of 15% polysulfide employed in the two-stage process modification maintained its yield protection efficiency in a repeated recycling cycle. No significant changes in paper strength were found in handsheets prepared from the three process modifications, except for a minor reduction in tear strength.

Modeling the Effect of Global Layout Pattern on Wire Width Variation for On-the-Fly Etching Process Modification

2015 ◽  
Vol E98.A (7) ◽  
pp. 1467-1474
Author(s):  
Daisuke FUKUDA ◽  
Kenichi WATANABE ◽  
Yuji KANAZAWA ◽  
Masanori HASHIMOTO
Keyword(s):  
Etching Process ◽  
Process Modification

Hazardous Waste Minimization Initiation Decision Report. Volume 1

1988 ◽  
Author(s):  
R. M. Roberts ◽  
J. L. Koff ◽  
L. A. Karr
Keyword(s):  
Hazardous Waste ◽  
Waste Minimization

Waste Minimization in Circuit Board Manufacturing by PARMOD(TM) Technology

1998 ◽  
Author(s):  
Gregory A. Jablonski ◽  
Paul H. Kydd ◽  
David L. Richard
Keyword(s):  
Circuit Board ◽  
Waste Minimization

NEW TECHNOLOGIES AND PRACTICES FOR WASTE MINIMIZATION IN THE CHEMICAL AND PETROCHEMICAL INDUSTRIES : FINDINGS OF THE SALVADOR, BRAZIL, 1993 CONFERENCE

1994 ◽  
Vol 30 (3) ◽  
pp. 1-9
Author(s):  
Francisco Fontes Lima ◽  
Francisco Alves Pereira
Keyword(s):  
Waste Management ◽  
Environmental Protection ◽  
Case Studies ◽  
New Technologies ◽  
Waste Minimization ◽  
Source Control ◽  
International Conference ◽  
The Third ◽  
Control Programmes ◽  
Petrochemical Industries

This paper describes the findings of the “Third International Conference on Waste Management in the Chemical and Petrochemical Industries,” held in Salvador, Brazil, October 20-23, 1993. A summary of the 74 technical papers, divided into six major categories, is presented together with comments on the more stringent legislation concerning source control programmes. Case studies of two large chemical complexes that have been developing successful waste minimization programmes are described in detail: CETREL-Environmental Protection Company in Camaçari, Brazil, and BASF AG in Ludwigshafen, Germany.

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