Biodegradability enhancement of hydrolyzed polyacrylamide
Biodegradability enhancement of hydrolyzed polyacrylamide wastewater by a combined Fenton-SBR treatment process Author links open overlay panel Lei Zhang a 1 Fei Su a 1 Nan Wang a Shuai Liu a Mei Yang a Yong-Zhong Wang a Danqun Huo a Tiantao Zhao b
Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess.
Biodegradation of hydrolyzed polyacrylamide by the
Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess. Song T(1), Li S(1), Ding W(1), Li H(1), Bao M(2), Li Y(3).
Hydrolyzed polyacrylamide (HPAM), which is extensively used for oil extraction in an oilfield, produces waste water that enters the groundwater system posing a threat to the safety of plants and animals. Among the many methods to removal the HPAM, the biodegradation based screened bacteria and sludge is an efficient method.
Biodegradation for hydrolyzed polyacrylamide
Kinetics and thermodynamics of hydrolyzed polyacrylamide (HPAM) biodegradation in anaerobic and aerobic activated sludge biochemical treatment systems were explored to determine the maximum rate
Biodegradation of hydrolyzed polyacrylamide by the combined expanded granular sludge bed reactor-aerobic biofilm reactor biosystem and key microorganisms involved in this bioprocess
Polyacrylamide degradation and its implications
Biodegradation of PAM occurs as microorganisms utilize the amide group of the polymer as a nitrogen source and/or the carbon backbone as a carbon source. 19,86 The amide group can be hydrolyzed by
The special function bacteria R2 was screened from hydrolyzed polyacrylamide (HPAM)‐containing wastewater that could use HPAM as the sole carbon source and nitrogen source. Through optimizing the condition of HPAM biodegradation, the removal rate of R2 free strain reached to 41.6% when pH was 7, temperature was 35°C, inoculation quantity (v
Biodegradation for hydrolyzed polyacrylamide
Biodegradation for hydrolyzed polyacrylamide in the anaerobic baffled reactor combined aeration tank. Highlights•HPAM removal efficiency was evaluated by multiple testing means.•Molecular weight of products was about 1/5000 of the original HPAM molecular weight.•Reduction of TOC proved HPAM can be utilized as C-source by microorganisms.•Reduction of amide group concentration proved
The kinetics of hydrolyzed polyacrylamide (HPAM) biodegradation, carried out in the batch experiments containing different initial HPAM concentrations and both Bacillus cereus and Bacillus sp
Some Aspects of the Properties and Degradation
Kinetics and thermodynamics of biodegradation of hydrolyzed polyacrylamide under anaerobic and aerobic conditions. Bioresource Technology 2016 , 216 , 95-104. DOI: 10.1016/j.biortech.2016.05.054.
Polyacrylamide (PAM), particularly high molecular PAM (>10 7 Dal), with a viscosity of over 58 centipoise (cp), has been increasingly used for enhanced oil recovery in oilfields ().Produced water generated during enhanced oil recovery contains high concentration of PAM, which should be removed before discharge (Yan et al. 2016).There have been a lot of studies focusing on the biodegradability
- What is biological wastewater treatment?
- Large number of residual solids is produced by aerobic treatment and its disposal is very costly due to its cheap operating costs, high removal efficiency, and minimal management needs, biological wastewater treatment has been widely used in municipal and household wastewater treatment operations (Ahn and Logan, 2010).
- What is the environmental assessment of wastewater treatment plants (WWTPs)?
- The conventional environmental assessment of the wastewater treatment plants (WWTPs) typically centres around the removal efficiency of the organic and nutrient substances and the amounts of energy and chemicals consumption.
- How much urban wastewater is treated in Thailand?
- However, only small portion of total urban wastewater generated in Thailand is treated. Twenty-nine urban wastewater collection and treatment plants have been constructed in 24 municipalities. However, the facilities can serve only 400,000 m3/day or about 2.3 million (approximately 10 %) of urban population.
- How many wastewater treatment plants are there in Thailand?
- present, there are 101 wastewater treatment plants throughout Thailand with a total of t ating 3.2 million cubic meters per day. A major portion of the treated effluent is being discharged directly to rivers or canals. In the industrial sectors, since the tariff of treated water has incr
