- Classification: chemical auxiliary agent
- Appearance: white free flowing granular
- CAS No.:9003-05-2862
- Type: anionic,cationic
- Formula: (C3h5no)N
- Solid Content: ≥89.5%
- Application:paper chemicals, textile auxiliary agents, water treatment chemicals
- Transport Package: 25kg kraft bag
- Delivery: 3-7day
degradation of polyacrylamide and its significance in nature
he, q. dong, b. biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system. bioresour. technol. 153 , 55–61 (2014).
current status on the biodegradability of acrylic polymers,in this regard, biotechnological approaches, where microbial activity is involved, could be attractive eco-friendly strategies. this mini-review describes the broad ap diversity, their properties and uses, and the factors affecting their biodegradability, underlining the importance of standardizing biodegradation quantification techniques.
current status on the biodegradability of acrylic polymers
abstract acrylic polymers are a diverse group of materials with broad applications, frequent use, and increasing demand. some of the most used ap are polyacrylamide, polyacrylic acid, polymethyl methacrylates, and polyacrylonitrile. although no information for the production of all ap types is published, data for the most used ap is around 9 mt/year, which gives an idea of the amount of
biodegradation of polyacrylamide and its derivatives manufacturer,although polyacrylamide (pam) and its derivatives have many useful applications, their release in nature can have impacts on the environment and human health, thus bioremediation approaches for residual pam are urgently needed. biodegradation of pam and its derivatives has been studied only in the last two decades, with most emphasis on acrylamide biodegradation. microorganisms have been shown
spotlight on the life cycle of acrylamide-based polymers
polyacrylamide biodegradation is a complex topic that has been reviewed in the literature [128,129,130,131,132,133,134]. when released into the environment, the polymer molecules will be exposed to various abiotic (i.e., physiochemical degradation) and biotic (i.e., degradation by the action of micro-organisms) conditions that are prone to
polyacrylamide flocculants and water treatment polyacrylamide,may be efficiently functionalized as flocculating agents. examples of this category include hydroxypropyl guar gum [7] , p-psyllium [8] , guar gum [9] , amylopectin , sodium
towards sustainable management of polyacrylamide in soil
biodegradation of partially hydrolyzed polyacrylamide by bacteria isolated from production water after polymer flooding in an oil field j. hazard. mater. , 184 ( 2010 ) , pp. 105 110
types of polyelectrolytes used as flocculation agents.the use of polyelectrolyte for chemical treatment of wastewaters with high particulate materials is indicated. the organic polymers provide a process of adsorption and bridging between particles
microbial degradation of polyacrylamide and the
hypothetical pathway for the biodegradation of polyacrylamide under anaerobic conditions (dai et al., 2015). a. nyyssölä and j. ahlgren international biodeterioration biodegradation 139 (2019
preparation of porous polyacrylamide hydrogels by frontal,polyacrylamide hydrogels with defined porous structure were synthesized through frontal polymerization (fp) in the presence of nahco 3 as a foaming agent. pore properties were analyzed using scanning electron microscopy and mercury intrusion porosimetry. the as-prepared hydrogels displayed a small cell diameter of ca 2 µm. the dissolved
biodegradation of partially hydrolyzed polyacrylamide
before biodegradation, there were three peaks in the hpam liquid chromatogram with retention times (r.t.) of 2.43, 4.08 and 4.68 min, respectively. in the liquid chromatogram of the hpam sample after biodegradation (fig. 4 a), besides the first two peaks (r.t. 2.43, 4.08 min, respectively), there was another peak with r.t. 2.85 min.
synthesis of anionic polyacrylamide by aqueous solution,anionic polyacrylamide with higher molecular weight was synthesized by aqueous solution polymerization,with acrylamide and acrylic acid as the monomers.the influences of the amount of edta,ph value,reaction time and aa/am ratio to the polyacrylamide molecular weight,the conversion of monomer and dissolution ability have been studied.
flocculants for water treatment: balancing safety flocculant
flocculants and coagulants are vital tools used globally to improve water quality by removing harmful contaminants such as sediment, metals and excess nutrients. industries such as water, mining, agriculture, construction, drinking water, wastewater, and pond and lake management all rely on chemical flocculants and/or coagulants. chemical treatments make it possible to remove suspended
safety, quality, and acceptability of polyacrylamide implant,implant expulsions were higher among chew clients (142/2987) compared to nurse/midwives (40/3517). results show the feasibility of training chews to deliver implants in remote rural settings but attention must be given to provider selection, training, supervision, and follow-up to ensure safety and quality of provision.
cationic polyacrylamide: an effective flocculating agent
1.. introductionover recent years, considerable attention has been focused upon the treatment and disposal of wastewater sludges (zhao, 2003).when polymers are involved in a solid–liquid separation by an aggregation process of colloidal particles, the process is termed as flocculation (barkert hartmann, 1988).
water treatment chemical material cas no. 9003-5-8 polyacrylamide,cas no.: 9003-05-8 formula: (c3h5no)n einecs: 207-173-7 acid-base polyacrylamide flocculant: neutral surface disposal agent certification: wqa, reach, iso 9001 environmental protection: yes
high dewatering efficiency textile auxiliary agent cationic
high dewatering efficiency textile auxiliary agent cationic flocculant polyacrylamide cpam, find details and price about polyacrylamide powder 9003-05-8 from high dewatering efficiency textile auxiliary agent cationic flocculant polyacrylamide cpam zhengzhou gesee new materials co.,ltd
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- Can cationic polyacrylamide be used in water treatment and sludge dewatering?
- To read the full-text of this research, you can request a copy directly from the authors. Cationic polyacrylamide (CPAM) were used extensively in water treatment, enhanced oil recovery and sludge dewatering. The review summarized the synthesis methods research progress of cationic flocculants.
- Are cationic polyacrylamide copolymers bad for the environment?
- Cationic polyacrylamide copolymers (PAM) are used for sludge dewatering in municipal waste water treatment and might enter the environment by spreading of the sludge on agricultural land. Concern has been expressed since little is known about the degradation of PAMs in soils.
- Are cationic copolymers used in sludge dewatering?
- Four groups of synthesis technologies of cationic copolymers were reviewed, including aqueous solution polymerization, dispersion polymerization, inverse emulsion polymerization and photo initiated polymerization. Furthermore, the paper reviewed that the application of cationic flocculants in sludge dewatering treatment.
- Do cationic polyacrylamide copolymers degrade in soil after land-spreading?
- This project demonstrated that the synthetic cationic polyacrylamide copolymers (PAM) incorporating C–C-bonds in the main chain slowly degrade in soil after land-spreading as a component of MWWTP sludge.
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