Evaluation of activated starch as an alternative
This study revealed that these specific activated starch polymers offer a good alternative to polyacrylamide. However, their integration in a ballasted flocculation is subjected to new design considerations and previous typical procedures should be revised to enhance the process performance and account for the specific properties of these polymers.
Evaluation of activated starch as an alternative to polyacrylamide polymers for drinking water flocculation
Activated starch as an alternative to polyacrylamide-based
Activated starch as an alternative to polyacrylamide-based polymers for in-line filtration of low turbidity source water Article (PDF Available) in Aqua 67(5):jws2025023 · June 2025 with 110 Reads
M. Lapointe, B. BarbeauEvaluation of activated starch as an alternative to polyacrylamide polymers for drinking water flocculation J. Water Supply: Res. Technol.—AQUA, 64 (3) (2015), pp. 333-343
Evaluation of activated starch as an alternative
This work investigated a novel alternative, HydrexTM 3841 activated starch polymer, as a coagulant aid for alum to treat low turbidity source water at pilot scale using in-line filtration.
Substituting polyacrylamide with an activated starch polymer during ballasted flocculation. A high molecular weight starch polymer was tested during ballasted flocculation. This study identified the conditions favorable to the use of an activated starch polymer as an alternative to PAM during ballasted flocculation: mixing intensity and
Suppression of Nitric Oxide Synthase by Thienodolin
The molecular formula of dechloro-thienodolin (1) was assigned as C 11 H 8 N 2 OS by interpretation of combined HRESIMS and 13 C NMR spectral data.The IR spectrum of 1 showed an absorption band at 1650 cm −1, which suggested the presence of an amide group.The distinct chemical shifts and coupling constants of four aromatic proton signals (H-4~H-7; δ 7.74, dd, J = 8.2, 1.3 Hz, 7.14, ddd, J
The pseudo-cereal quinoa has an outstanding nutritional value. Seed germination is unusually fast, and plant tolerance to salt stress exceptionally high. Seemingly all seeds harbor bacterial endophytes. This work examines mitogen-activated protein kinase (MAPK) activities during early development. It evaluates possible contribution of endophytes to rapid germination and plant robustness.
Agarose and Its Derivatives as Supports for Enzyme
Agarose is a polysaccharide obtained from some seaweeds, with a quite particular structure that allows spontaneous gelation. Agarose-based beads are highly porous, mechanically resistant, chemically and physically inert, and sharply hydrophilic. These features—that could be further improved by means of covalent cross-linking—render them particularly suitable for enzyme immobilization
Arsenic pollution in groundwater at elevated concentrations is well documented in many countries such as America, Argentina, Bangladesh, Chile, China, India and Mexico at a concentration range from 1 μg L −1 to 73.6 mg L −1. 16 As shown in Fig. 1, arsenic enters into groundwater in the form of As(iii) and As(v) through many ways such as
Vol 11, No 4 (2016) - Nc State University
Starch-Based Biopolymer Reinforced with High Yield Fibers from Sugarcane Bagasse as a Technical and Environmentally Friendly Alternative to High Density Polyethylene Ana M. Jiménez, Francesc X. Espinach, Marc Delgado-Aguilar, Rafel Reixach, Germán Quintana, Pere Fullana-i-Palmer, Pere Mutjé
Summary. Here we describe a new method to study protein import into isolated chloroplasts under stress. The method is rapid and straightforward, and can be applied to study the consequences of different stress conditions for chloroplast protein import, and the corresponding regulatory mechanisms.
- Are cationic polyacrylamide copolymers bad for the environment?
- Cationic polyacrylamide copolymers (PAMs) 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.
- How does polyacrylamide affect the environment?
- By employing sustainable production practices, minimizing chemical usage, and optimizing application methods, the environmental footprint of polyacrylamide can be significantly reduced. The environmental impact of polyacrylamide serves as a reminder of the intricate balance between technological advancement and ecological responsibility.
- Are polyacrylamide products eco-friendly?
- Polyacrylamide manufacturers are increasingly focusing on producing eco-friendly formulations. By employing sustainable production practices, minimizing chemical usage, and optimizing application methods, the environmental footprint of polyacrylamide can be significantly reduced.
- What are acrylamide and polyacrylamide used for?
- Acrylamide and polyacrylamide (PAM) are used in diverse industrial processes, mainly the production of plastics, dyes, and paper, in the treatment of drinking water, wastewater, and sewage. Besides inorganic form, acrylamide is formed naturally in certain starchy foods that were heated to cook a temperature above 120 °C for elongated time.
