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Hollender, Juliane; Krol, Doris van der; Kornberger, L.; Gierden, Edith; Dott, Wolfgang

doi:10.1023/a:1015258308460

Cited by 45 publications

(4 citation statements)

References 27 publications

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“…This indicated that the activated sludge of A 2 O did not only dislike the glucose as a carbon source but also decreased its substrate utilization rate when the glucose concentration was increased. This result varied from the study of Hollender et al [2], which reported that the degradation of glucose was fast, whereas the degradation of acetate was slow and incomplete.…”

Section: Performance Of Acetic Acid and Glucose As Carbon Sources In ...mentioning

confidence: 63%

“…To improve this, much research has been devoted to factors that could affect PAOs, especially focused on PHA synthesis and degradation. PHAs are mainly composed of varying amounts of poly-b-hydroxybutyrate (PHB) or poly-b-hydroxyvalerate (PHV), depending on the types of carbon sources that were supplied to the activated sludge [2]. It was found that the types of carbon sources were highly critical because it could dictate the metabolism of the microorganisms.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources

Yang

Dao

et al. 2020

Water

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This study used high and low concentrations of glucose and acetic acid as carbon sources in two aerobic-anoxic-oxic (A2O) processes. Trials were shock loaded with different concentrations of Cd2+. It was observed that the substrate utilization rate decreased when glucose concentration increased and thus the activated sludge of A2O preferred acetic acid as a carbon source over glucose. Under anaerobic conditions, activated sludge readily transformed the substrate into poly-b-hydroxybutyrate (PHB) by the Entner–Douderoff (ED) pathway with ease, but not into poly-b-hydroxyvalerate (PHV) by the Embden–Meyerhof–Parnas (EMP) pathway. However, ED pathway was suppressed more severely by cadmium shock loading than that of the EMP pathway. The shock loading of Cd2+ greatly inhibited the anaerobic phosphate release rate with a half inhibition concentration of 10 mg L−1 when acetic acid was used as a substrate. The phosphate removal efficiency of A2O with acetic acid was affected by Cd2+ shock loading more than that of glucose. Therefore, A2O with glucose as a substrate could tolerate the Cd2+ shock loading better than that of A2O with acetic acid. This study also showed that polyphosphate accumulating organisms (PAOs) were more sensitive to Cd2+ toxicity than that of glycogen accumulating organisms (GAOs). With the addition of Cd2+, PHB/PHV synthesis/degradation was inhibited more apparently in acetic acid trials than that of glucose trials.

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Section: Performance Of Acetic Acid and Glucose As Carbon Sources In ...mentioning

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources

Yang

Dao

et al. 2020

Water

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“…15 The biofloc production depends critically on the carbon sources and their nutritive values. 18,19 In the present study, tapioca powder was used as a carbohydrate source, which was then utilized by the bacteria as food and produced microorganisms' protein via the system's subsequent absorption of nitrogen. 20 Based on the present study's results, tapioca's application as a carbohydrate source has been successful.…”

Section: Discussionmentioning

confidence: 99%

Effects of biofloc technology on water quality and growth performance of Macrobrachium rosenbergii

Camarin,

Gonzaga,

Jamis

et al. 2023

Israeli Journal of Aquaculture - Bamidgeh

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This study aimed to evaluate the effects of biofloc technology on the water quality and growth performance of Macrobrachium rosenbergii. The experiment was carried out over 165 days at the hatchery complex of the College of Fisheries and Aquatic Sciences, Mindanao State University-Marawi, Philippines. Postlarvae of M. rosenbergii (0.011±0.05 g) were stocked in 18 circular tanks (1200 L) consisting of six treatments under biofloc and non-biofloc systems in a completely randomized experimental design with tapioca flour as the carbohydrate source. Commercial pelletized sinking prawn feed with three dietary protein levels, viz., 42, 38, and 35% were chosen as experimental feeds. Results of the present study show that the water parameters were within the optimum range required in the culture of freshwater prawns. However, biofloc technology (BFT) did not influence sediment and water samples’ dissolved oxygen, temperature, and pH values. On the other hand, total ammoniacal nitrogen (TAN) and nitrate showed significant variation (p<0.05) among treatments, with higher values in the control treatment compared to the biofloc treatments. Moreover, the dietary protein level and carbohydrate addition had no significant effect on soil pH and organic carbon except for the soil total nitrogen value, where higher values were observed in the biofloc treatments. Furthermore, significantly higher mean prawn weight gain, net prawn yield, specific growth rate (SGR), and average daily weight gain (ADG) were recorded in the biofloc treatments compared to non-biofloc treatments. At the end of the culture period, there was 100% survival in all of the tanks. On the other hand, no significant variations were observed in feed conversion ratio (FCR) and protein efficiency ratio (PER) in the control treatment compared to the treatment with biofloc except in tanks using feed of 42% CP under the biofloc system. Therefore, based on the results of the present study, the use of BFT in the culture system of M. rosenbergii, helped reduce the protein percentage from 42 to 35, while maintaining the yield.

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“…This process is based on poly-P-accumulating organisms, named PAOs [5]. PAOs were characterized as mixed consortium of different sludge indigenous bacteria in enhanced biological phosphorus removal (EBPR) [6]. In order to recover P and separate heavy metals from sewage sludge incineration ash, a mixture of A. ferrooxidans and A. thiooxidans strains was used as leaching media in comparison to common chemical treatment.…”

Section: Introductionmentioning

confidence: 99%

Sequenced Bioleaching and Bioaccumulation of Phosphorus from Sludge Combustion – A New Way of Resource Reclaiming

Zimmermann

Dott

2009

AMR

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Abstract. The recovery of phosphorus from sewage sludge incineration ash as well as the separation of heavy metals from ash was investigated by using the biotechnological process of bioleaching and bioaccumulation of released phosphorus by newly developed population of bioleaching bacteria, Acidithiobacillus sp. strains, and polyphosphate (poly-P) accumulating bacteria, the AEDSpopulation (Acidithiobacillus sp. enriched digested sludge). The biologically performed solubilization of phosphorus from sewage sludge incineration ash is accompanied by the release of toxic metals. Therefore a combined process to separate phosphorus from heavy metals by achieving a plant available phosphorus-enriched product and a metal depleted ash was designed. Leaching experiments were conducted in laboratory scaled leaching reactor containing a bacterial stock culture of Acidithiobacillus sp.. Next step was the enhancement of P-recovery in combining bioleaching with simultaneous bio-P-accumulation by AEDS-population. The uptake of phosphorus in biomass reaches up to 66 % of the mobilized phosphorus by bioleaching. The combined biologically performed technology of phosphorus leaching and separation from toxic metals by simultaneous bioaccumulation developed in this study is a promising process for economical and ecological recovery of phosphorus from waste solids.

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Cited by 45 publications

References 27 publications

Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources

Comparison of the Influences of Cadmium Toxicity to Phosphate Removal in Activated Sludge Separately Fed by Glucose and Acetic Acid as Carbon Sources

Effects of biofloc technology on water quality and growth performance of Macrobrachium rosenbergii

Sequenced Bioleaching and Bioaccumulation of Phosphorus from Sludge Combustion – A New Way of Resource Reclaiming

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