Zobrazeno 1 - 10
of 12
pro vyhledávání: '"G G Leppard"'
Autor:
M. M. Reid, Martin Jekel, G. G. Leppard, G. Makdissy, Peter M. Huck, Jens Haberkamp, Sigrid Peldszus
Publikováno v:
Journal of Water Supply: Research and Technology-Aqua. 59:164-178
This study investigated the fouling of four polyamide nanofiltration membranes by two surface waters that differed substantially in major properties. The emphasis was on determining the characteristics of the fouling layer on the membranes. The rates
Autor:
S. N. Liss, G. G. Leppard, I. G. Droppo, B. C. Lee, J. Finlayson, B. Liao, M. Cheung, R. Bura
Publikováno v:
Water Science and Technology. 37:325-333
The precise role of extracellular polymeric substances (EPS) in relation to the formation and physicochemical properties of microbial floc in wastewater treatment systems is not well known. Studies were undertaken to provide more comprehensive descri
Publikováno v:
Water Science and Technology. 37:353-357
The relationships between the structure of minimally perturbed activated sludge flocs and the sorption of organic contaminants were studied. Sorption, settling velocity, size distributions, floc structure and EPS composition were all examined. The re
Publikováno v:
Water, Air, & Soil Pollution. 99:43-53
Autor:
G G Leppard, J Buffle
Publikováno v:
Environmental Science & Technology. 29:2169-2175
Parts 1 and 2 of this series are tutorial feature articles exceptionally published as Critical Reviews for editorial reasons. They intend to give to the nonspecialist an overview of the major aspects of the characterization of aquatic colloids in per
Autor:
J. Buffle, G. G. Leppard
Publikováno v:
Environmental Science & Technology. 29:2176-2184
Parts 1 and 2 of this series are tutorial feature articles exceptionally published as Critical Reviews for editorial reasons. They intend to give to the nonspecialist an overview of the major aspects of the characterization of aquatic colloids in rel
Publikováno v:
Journal of aquatic ecosystem health. 3:295-310
An overview of current status of microbial research in the Great Lakes consisting of structural, toxicological, and cytological aspects is presented. A variety of techniques for the identification and enumeration of food-web parameters such as bacter
Publikováno v:
Water science and technology : a journal of the International Association on Water Pollution Research. 46(1-2)
Correlative microscopy was applied to study the influence of solids retention time on activated sludge floc structure. Conventional optical microscopy revealed flocs at lower SRTs (4 and 9 days) to be irregular in shape while flocs at higher SRTs (16
Autor:
G G, Leppard
Publikováno v:
Annali dell'Istituto superiore di sanita. 35(3)
Marine snow and marine snow components contribute to the mucilage phenomenon in the northern Adriatic Sea. Of special relevance is the matrix material, composed of extracellular polymeric substances, which are packaged into fibrils of colloidal dimen
Publikováno v:
Canadian Journal of Microbiology. 23:790-797
The structure of the pellicles and cells of the cellulose-producing bacteria, Acetobacter xylinum and Acetobacter acetigenus, was studied by transmission electron microscopy of thin sections and freeze-etch replicas of glucose-stimulated cell suspens