Ronald W Harvey (Former Employee)
Science and Products
Filter Total Items: 80
Evaluating microbial purification during soil treatment of wastewater with multicomponent tracer and surrogate tests Evaluating microbial purification during soil treatment of wastewater with multicomponent tracer and surrogate tests
Soil treatment of wastewater has the potential to achieve high purification efficiency, yet the understanding and predictability of purification with respect to removal of viruses and other pathogens is limited. Research has been completed to quantify the removal of virus and bacteria through the use of microbial surrogates and conservative tracers during controlled experiments with...
Authors
S. Van Cuyk, R.L. Siegrist, K. Lowe, R.W. Harvey
Tracers in groundwater: Use of microorganisms and microspheres Tracers in groundwater: Use of microorganisms and microspheres
No abstract available.
Authors
Ronald W. Harvey, Hauke Harms
Bacterial transport experiments in fractured crystalline bedrock Bacterial transport experiments in fractured crystalline bedrock
The efficiency of contaminant biodegradation in ground water depends, in part, on the transport properties of the degrading bacteria. Few data exist concerning the transport of bacteria in saturated bedrock, particularly at the field scale. Bacteria and microsphere tracer experiments were conducted in a fractured crystalline bedrock under forced-gradient conditions over a distance of 36...
Authors
M.W. Becker, D.W. Metge, S.A. Collins, A.M. Shapiro, R.W. Harvey
Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand
Field and laboratory experiments were conducted to investigate inactivation of viruses attached to mineral surfaces. In a natural gradient transport field experiment, bacteriophage PRD1, radiolabeled with 32P, was injected into a ferric oxyhydroxide-coated sand aquifer with bromide and linear alkylbenzene sulfonates. In a zone of the aquifer contaminated by secondary sewage infiltration...
Authors
Joseph N. Ryan, Ronald W. Harvey, David W. Metge, Menachem Elimelech, Theresa Navigato, Ann P. Pieper
Effect of growth conditions and staining procedure upon the subsurface transport and attachment behaviors of a groundwater protist Effect of growth conditions and staining procedure upon the subsurface transport and attachment behaviors of a groundwater protist
The transport and attachment behaviors of Spumella guttula (Kent), a nanoflagellate (protist) found in contaminated and uncontaminated aquifer sediments in Cape Cod, Mass., were assessed in flowthrough and static columns and in a field injection-and-recovery transport experiment involving an array of multilevel samplers. Transport of S. guttula harvested from low-nutrient (10 mg of...
Authors
R.W. Harvey, N. Mayberry, N.E. Kinner, D.W. Metge, F. Novarino
Field evidence for a protistan role in an organically-contaminated aquifer Field evidence for a protistan role in an organically-contaminated aquifer
The association between protists, bacteria, and dissolved organic carbon (DOC) in an oxygen-depleted, 6 km-long wastewater contaminant plume within a sandy aquifer (Cape Cod, MA) was investigated by comparing abundance patterns along longitudinal and vertical transects and at a control site. Strong linear correlations were observed between unattached bacterial abundance and DOC for much...
Authors
Nancy E. Kinner, Ronald W. Harvey, David M. Shay, David W. Metge, Alan Warren
Science and Products
Filter Total Items: 80
Evaluating microbial purification during soil treatment of wastewater with multicomponent tracer and surrogate tests Evaluating microbial purification during soil treatment of wastewater with multicomponent tracer and surrogate tests
Soil treatment of wastewater has the potential to achieve high purification efficiency, yet the understanding and predictability of purification with respect to removal of viruses and other pathogens is limited. Research has been completed to quantify the removal of virus and bacteria through the use of microbial surrogates and conservative tracers during controlled experiments with...
Authors
S. Van Cuyk, R.L. Siegrist, K. Lowe, R.W. Harvey
Tracers in groundwater: Use of microorganisms and microspheres Tracers in groundwater: Use of microorganisms and microspheres
No abstract available.
Authors
Ronald W. Harvey, Hauke Harms
Bacterial transport experiments in fractured crystalline bedrock Bacterial transport experiments in fractured crystalline bedrock
The efficiency of contaminant biodegradation in ground water depends, in part, on the transport properties of the degrading bacteria. Few data exist concerning the transport of bacteria in saturated bedrock, particularly at the field scale. Bacteria and microsphere tracer experiments were conducted in a fractured crystalline bedrock under forced-gradient conditions over a distance of 36...
Authors
M.W. Becker, D.W. Metge, S.A. Collins, A.M. Shapiro, R.W. Harvey
Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand Field and laboratory investigations of inactivation of viruses (PRD1 and MS2) attached to iron oxide-coated quartz sand
Field and laboratory experiments were conducted to investigate inactivation of viruses attached to mineral surfaces. In a natural gradient transport field experiment, bacteriophage PRD1, radiolabeled with 32P, was injected into a ferric oxyhydroxide-coated sand aquifer with bromide and linear alkylbenzene sulfonates. In a zone of the aquifer contaminated by secondary sewage infiltration...
Authors
Joseph N. Ryan, Ronald W. Harvey, David W. Metge, Menachem Elimelech, Theresa Navigato, Ann P. Pieper
Effect of growth conditions and staining procedure upon the subsurface transport and attachment behaviors of a groundwater protist Effect of growth conditions and staining procedure upon the subsurface transport and attachment behaviors of a groundwater protist
The transport and attachment behaviors of Spumella guttula (Kent), a nanoflagellate (protist) found in contaminated and uncontaminated aquifer sediments in Cape Cod, Mass., were assessed in flowthrough and static columns and in a field injection-and-recovery transport experiment involving an array of multilevel samplers. Transport of S. guttula harvested from low-nutrient (10 mg of...
Authors
R.W. Harvey, N. Mayberry, N.E. Kinner, D.W. Metge, F. Novarino
Field evidence for a protistan role in an organically-contaminated aquifer Field evidence for a protistan role in an organically-contaminated aquifer
The association between protists, bacteria, and dissolved organic carbon (DOC) in an oxygen-depleted, 6 km-long wastewater contaminant plume within a sandy aquifer (Cape Cod, MA) was investigated by comparing abundance patterns along longitudinal and vertical transects and at a control site. Strong linear correlations were observed between unattached bacterial abundance and DOC for much...
Authors
Nancy E. Kinner, Ronald W. Harvey, David M. Shay, David W. Metge, Alan Warren