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uses of anionic polyacrylamide effects on soil sorption

  • (PDF) The Nalco Water Handbook 2nd Edition |

    Academia.edu is a platform for academics to share research papers.

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  • Drinking water contamination and treatment

    2016-8-16 · Water is of fundamental importance for life on earth. The synthesis and structure of cell constituents and transport of nutrients into the cells as well as body metabolism depend on water. The contaminations present in water disturb the spontaneity of the mechanism and result in long/short-term diseases. The probable contaminations and their possible routes are discussed in the present review.

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  • Nature Environment & Polution Technology

    About the Journal. The journal 'Nature Environment and Pollution Technology' is a quarterly scientific research journal, devoted to broader aspects of the environment, and published in March, June, September and December in a year. It was initially published with the title of 'Journal of Environment & Pollution' (ISSN: 0971-4871) from 1994 to 2001. Its name was later changed to Nature ...

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  • A review of treating oily wastewater - ScienceDirect

    2017-5-1 · Wang (2007) applied a settling tank simulation and carried out sedimentation tank, combined with the flotation process in a small pilot study, when the influent concentration of oil was 3000–14000 mg/L, the effluent quality of the oil average concentration was of 300 mg/L or less, and the minimum has reached 97 mg/L, the flotation process improving the degreasing effect.

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  • Aspartic acid | C4H7NO4 - PubChem

    Aspartic Acid is a non-essential amino acid in humans, Aspartic Acid has an overall negative charge and plays an important role in the synthesis of other amino acids and in the citric acid and urea cycles. Asparagine, arginine, lysine, methionine, isoleucine, and some nucleotides are synthesized from aspartic acid.Aspartic acid also serves as a neurotransmitter.

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  • Resolve a DOI Name

    Type or paste a DOI name into the text box. Click Go. Your browser will take you to a Web page (URL) associated with that DOI name. Send questions or comments to doi ...

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  • Expat Dating in Germany - chatting and dating - Front

    Expatica is the international community’s online home away from home. A must-read for English-speaking expatriates and internationals across Europe, Expatica provides a tailored local news service and essential information on living, working, and moving to your country of choice. With in-depth features, Expatica brings the international community closer together.

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  • Effects of Soil and Water Properties on Anionic ...

    2021-6-2 · Effects of Soil and Water Properties on Anionic Polyacrylamide Sorption. Knowing the sorptive behavior of anionic polyacrylamide by soils is useful in predicting the appropriate application rate, depth of effective treatment, and its mobility in soils.Sorption isotherms of PAM by soil materials, six natural soils, and their subsamples with partial organic matter (OM) removed by H2O2 ...

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  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

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  • The mechanism of anionic polyacrylamide adsorption

    2018-11-1 · The anionic polyacrylamide AN PAM (with various contents of carboxyl groups) adsorption mechanism on the montmorillonite surface was examined. The effect of hazardous chromium(VI) ions addition was studied. The anionic polyacrylamide is a popular soil flocculant, commonly used to prevent erosion of arable soils.

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  • Effects of anionic polyacrylamide on maize growth: a

    2011-7-30 · Various anionic polyacrylamide polymers (PAMs) are frequently used to improve soil properties and reduce erosion. However, the effects of their application on plant growth remain unclear. Aggregate-free loess with high water holding capacity was used as growing substrate to test the effects of two rates (10 and 40 kg ha−1) of a linear PAM on the growth of maize (Zea maize L.) for a period up ...

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  • Effects of polyacrylamide on soil erosion and nutrient ...

    2016-6-1 · Effects of soil and water properties on anionic polyacrylamide sorption Soil Sci. Soc. Am. J. , 66 ( 2002 ) , pp. 58 - 584 View Record in Scopus Google Scholar

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  • Polyacrylamide degradation and its implications in ...

    2018-9-7 · The hydrolyzed form of polyacrylamide (HPAM), a co-polymer of acrylamide and acrylic acid, is the most widely used anionic PAM in oil and gas development as well as in soil …

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  • Spectrophotometric Determination of Polyacrylamide

    2001-8-4 · Anionic Polyacrylamide Effects on Soil Sorption and Desorption of Metolachlor, Atrazine, 2,4-D, and Picloram. Journal of Environmental Quality 2002, 31 (4) , 1226-1233.

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  • Best Practices Guidance for the Use of Anionic ...

    2018-4-4 · 11/15/2017 5 What is Anionic Polyacrylamide? • One of the most common polymer flocculants on the market • Common uses of PAM as a flocculant: reduction of sediment and nutrient loads to natural lakes and ponds wastewater and drinking water treatment clarification of effluents in industries like pulp & paper, aquaculture • Also popular for erosion prevention in irrigation furrows and on

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  • Ecotoxicological effects of polyacrylate, acrylic acid ...

    2020-8-13 · Ecotoxicological effects of polyacrylate, acrylic acid, polyacrylamide and acrylamide 1 1 Introduction 1.1 Context Agriculture uses plant protection products and fertilizers including soil improvers that may contain various chemical substances. Among …

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  • Effects of superabsorbent polyacrylamide hydrogel

    2020-10-29 · Lu JH, Wu L, Letey J (2002) Effects of soil and water properties on anionic polyacrylamide sorption. Soil Sci Soc Am J 66:578–584. CAS Google Scholar Lu S, Chen F, Ngo HH, Guo W, Feng C, Wu J, Zheng B (2016) Effect of straw and polyacrylamide on the stability of land/water ecotone soil and the field implementation.

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  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

    Get Price
  • POLYACRYLAMIDE IN AGRICULTURE AND

    2010-11-20 · Anionic polyacrylamide (PAM) has been sold since 1995 to reduce irrigation-induced erosion and enhance infiltration. Its soil stabilizing and ... evident immediately on soil incorporation, whereas other effects, such as aggregation, depend on chemical and biological processes occurring over weeks or months.

    Get Price
  • [PDF] Anionic polyacrylamide influence on the

    Purpose Polymeric substances, as soil conditioners, limit the erosion process as well as improve the soil structure. The same macromolecular compounds may influence the heavy metal accumulation in soil environment. The main aim of this study was investigation of anionic polyacrylamide (AN PAM) effect on the lead(II) ion sorption on the montmorillonite surface. The effects of Pb(II) ion ...

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  • Synergistic effects of anionic polyacrylamide and

    2019-11-1 · Excessive application of phosphorus (P) fertilizer to the agriculture soil can lead to the P loss to the aquatic ecosystem. Three soils from different land use (tea, paddy, and vegetable soils) were treated with biogas slurry (BS) at rate of 79.8 kg ha −1, anionic polyacrylamide (PAM) at rate of 12.5, 25 and 50 kg ha −1, Gypsum (Gy) at rate of 5t ha −1, and the control (Ck) without ...

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  • Anionic polyacrylamide influence on the lead(II) ion ...

    2020-5-23 · Purpose Polymeric substances, as soil conditioners, limit the erosion process as well as improve the soil structure. The same macromolecular compounds may influence the heavy metal accumulation in soil environment. The main aim of this study was investigation of anionic polyacrylamide (AN PAM) effect on the lead(II) ion sorption on the montmorillonite surface. The effects of Pb(II) ion ...

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  • [PDF] Toxicity of anionic polyacrylamide

    Addition of anionic polyacrylamide (PAM) to agricultural irrigation water can dramatically reduce erosion of soils. However, the toxicity of PAM to aquatic life, while often claimed to be low, has not been thoroughly evaluated. Five PAM formulations, including two oil-based products, one water-based product, one granular product and one tablet product, were evaluated for acute and/or chronic ...

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  • effects of polyacrylamide, biopolymer, and biochar

    In this study, we assessed the effects of anionic polyacrylamide (PAM), synthesized biopolymer (BP), and biochar (BC) on the decomposition of 14 C-labeled maize residue in sandy and sandy loam soils. Specifically, PAM and BP with or without 14 C-labeled plant residue were applied at 400 kg ha -1,whereas BC was applied at 5000 kg ha -1,after ...

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  • Polyacrylamide Uses - njgaokechem.com

    2021-6-2 · Application of Polyacrylamide. 1. PAM in water treatment field PAM for domestic sewage and organic wastewater treatment, PAM distribution or alkaline medium showed a cationic, so that the sewage effluent suspended particles with a negative charge of flocculation, clarification is very effective. Such as the production of grain alcohol wastewater, wastewater, urban sewage treatment plant ...

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  • Soil Structure Stability under Different Land Uses in ...

    2021-1-29 · Soil Structure Stability under Different Land Uses in Association with Polyacrylamide Effects Amrakh I. Mamedov 1,* , Atsushi Tsunekawa 1, Nigussie Haregeweyn 2, Mitsuru Tsubo 1, Haruyuki Fujimaki 1, Takayuki Kawai 1, Birhanu Kebede 3, Temesgen Mulualem 4, Getu Abebe 3, Anteneh Wubet 4 and Guy J. Levy 5 Citation: Mamedov, A.I.; Tsunekawa,

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  • Ecotoxicological effects of polyacrylate, acrylic acid ...

    2020-8-13 · Ecotoxicological effects of polyacrylate, acrylic acid, polyacrylamide and acrylamide 1 1 Introduction 1.1 Context Agriculture uses plant protection products and fertilizers including soil improvers that may contain various chemical substances. Among …

    Get Price
  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

    Get Price
  • POLYACRYLAMIDE IN AGRICULTURE AND

    2010-11-20 · Anionic polyacrylamide (PAM) has been sold since 1995 to reduce irrigation-induced erosion and enhance infiltration. Its soil stabilizing and ... evident immediately on soil incorporation, whereas other effects, such as aggregation, depend on chemical and biological processes occurring over weeks or months.

    Get Price
  • Polyacrylamide: A Review of the Use, Effectiveness, and ...

    2017-3-22 · Soil degradation is a significant problem throughout the world. Use of soil amendments, including anionic polyacrylamide (PAM), is one of many options for protecting soil resources. Polyacrylamide has been the focus of a substantial amount of research in the 1990s. Our objective is to present a review of the recent findings

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  • Polyacrylamide in Agriculture and Environmental

    2007-1-1 · Anionic polyacrylamide (PAM) has been sold since 1995 to reduce irrigation‐induced erosion and enhance infiltration. Its soil stabilizing and flocculating properties improve runoff water quality by reducing sediments, N, dissolved reactive phosphorus (DRP) and total P, chemical oxygen demand (COD), pesticides, weed seeds, and microorganisms in runoff.

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  • Synergistic effects of anionic polyacrylamide and

    2019-11-1 · Excessive application of phosphorus (P) fertilizer to the agriculture soil can lead to the P loss to the aquatic ecosystem. Three soils from different land use (tea, paddy, and vegetable soils) were treated with biogas slurry (BS) at rate of 79.8 kg ha −1, anionic polyacrylamide (PAM) at rate of 12.5, 25 and 50 kg ha −1, Gypsum (Gy) at rate of 5t ha −1, and the control (Ck) without ...

    Get Price
  • Comparison of adsorption affinity of anionic and cationic ...

    2019-1-18 · These substances, also called soil flocculants, are macromolecular compounds which contribute to the reinforcement of soil structure as a result of its adsorption on the mineral surface. The soil conditioners commonly used in agriculture is ionic poly - acrylamide (PAM)—both anionic …

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  • Effects of polyacrylamide on soil erosion and

    In this paper, twenty-seven simulated rainfall events were carried out in a greenhouse, in which the substrate material was artificial soil; nine types of anionic polyacrylamide (PAM) were studied, which consisted of three molecular weight (6, 12, and 18 Mg mol − 1) and three charge density (10, 20, and 30%) formulations in a 3 by 3 factorial ...

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  • Dispersion polymerization of anionic polyacrylamide in

    2017-8-27 · Abstract: Anionic polyacrylamide dispersions were prepared by dispersion polymerization in an aqueous salt medium, using acrylamide(AM) and acrylic acid(AA) as monomers and anionic polyelectrolytes as stabilizer. Effects of salt concentration, and molecular weight and concentration of

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  • Comparison of the Effects of Polyacrylamide and

    Superabsorbent polymers have been used widely in agricultural production in arid and semi-arid regions to manage the soil water holding capacity. As the common water-retention polymers, the molecular weights, and structures of polyacrylamide (PAM) and sodium carboxymethylcellulose (CMC) are obviously different. Modified soil water management with polymers (i.e., PAM and CMC) has shown …

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  • Adsorption properties of the nanozirconia/anionic ...

    2016-5-1 · Sodium dodecyl sulfate (SDS) produced by Sigma–Aldrich was also applied in the study. This is an organic compound with the chemical formula CH 3 − (CH 2) 11 − SO 4 Na. SDS is the anionic surfactant whose molecules are in the ionic form in the aqueous solution.. All measurements were made in the solution pH range 3–11 at 25 °C.Sodium chloride (NaCl) of the concentration 0.01 mol/dm 3 ...

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  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

    Get Price
  • The mechanism of anionic polyacrylamide adsorption

    The anionic polyacrylamide AN PAM (with various contents of carboxyl groups) adsorption mechanism on the montmorillonite surface was examined. The effect of hazardous chromium(VI) ions addition was studied. The anionic polyacrylamide is a popular soil flocculant, commonly used to prevent erosion of …

    Get Price
  • Synergistic effects of anionic polyacrylamide and

    Excessive application of phosphorus (P) fertilizer to the agriculture soil can lead to the P loss to the aquatic ecosystem. Three soils from different land use (tea, paddy, and vegetable soils) were treated with biogas slurry (BS) at rate of 79.8 kg ha-1, anionic polyacrylamide (PAM) at rate of 12.5, 25 and 50 kg ha-1, Gypsum (Gy) at rate of 5t ha-1, and the control (Ck) without treatment, to ...

    Get Price
  • Soil Structure Stability under Different Land Uses in ...

    2018-7-2 · To investigate this potential, we treated in situ field plots with two practical surface application levels of anionic polyacrylamide (PAM only) with and without nanomagnetite (PAM-NM), examined soil physical properties, and evaluated the impact of this amendment on contaminant sorption and soil erosion control. Polyacrylamide and PAM-NM ...

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  • Combined effects of polyacrylamide and

    2021-2-16 · Hence, under environmentally relevant conditions, anionic polycarboxylates generally show strong sorption to activated sludge, soil particles, and other solids [18, 58, 62]. A K d of 1,825 L/kg was determined for sorption of P-AA (16.1 kDa) to activated sludge ([ 19 ], see Table S4).

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  • Environmental fate and effects of water-soluble

    2021-6-2 · Polyacrylamide could be made to four series,e.g., non-ion polyacrylamide,zwitterionic polyacrylamide, cationic polyacrylamide CPAM, and anionic polyacrylamide APAM. Polymers may be purchased in dry, emulsion, liquid and tablet form. These chemical compounds are used to flocculate and coagulate suspended solids in water, wastewater, and soil.

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  • What is Polyacrylamide|PAM FAQ

    2013-3-22 · We assessed the effects of BC, synthesized BP and anionic PAM on the decomposition of 14 C-labelled maize residues and on their stabilization in aggregate fractions in sandy and sandy loam soils. Polyacrylamide and BP were applied at 400 kg ha −1 and BC was applied at 5000 kg ha −1 , and the soils were incubated for 80 days at 22°C.

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  • Effects of polyacrylamide, biopolymer and biochar on

    2015-8-31 · The fiber–water sorption coefficients for alcohol ethoxylates and alkyl sulfates showed a linear trend with bioconcentration factors from the literature. Fiber–water sorption coefficients are promising as a parameter to study the effects of hydrophobicity and other potential interactions on sorption behavior of neutral and anionic surfactants.

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  • Mechanisms of Neutral and Anionic Surfactant

    2020-12-1 · Effects of temperature and surfactants on naphthalene and phenanthrene sorption by soil. Journal of Environmental Sciences 2009, 21 (5) , ... Sorption of low levels of nonionic and anionic surfactants on soil: effects on sorption of triticonazole fungicide. Pesticide Science 1998, 54 (1) , ...

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  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

    Get Price
  • Polyacrylamide (PAM) and Soils - USDA

    isotope-labeling; adsorption-; sorption-isotherms; aggregates-; stability-; physical-properties-of-soil Abstract: Although the effects of polymers on various soil physical properties have been investigated, adsorption of polymers by soils has not been extensively studied. ... The three anionic polyacrylamide (PAM) compounds had negative charge ...

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  • POLYACRYLAMIDE (PAM) FOR IRRIGATION RUNOFF

    2010-11-20 · only modest effects on soil microflora numbers and function and that PAM degrades at a rate of at least 9.8% y-1. Key points of PAM technology are presented. Key words: water quality, erosion, infiltration, environmental safety, acrylamide Introduction This paper summarizes anionic polyacrylamide (PAM) use for erosion and infiltration

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  • Soil Structure Stability under Different Land Uses in ...

    1999-7-1 · The adsorption characteristics of synthetic organic polymers play a major role in their effects on the stabilization of aggregates. We hypothesized that high molecular weight polymers adsorb on both outer and inner surfaces of large aggregates (>1.0 mm), and thus enhance the resistance of aggregates to external forces (e.g., water drop impact).). Adsorption of an anionic polyacrylamide (PAM ...

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  • Polyacrylamide adsorption and aggregate stability ...

    2014-6-19 · The flocculation kinetics of anionic polyacrylamide in Kaolin suspensions has been investigated as a function of pH (4 ~ 9), soil-water NaCl (0.5~10 mg·L −1) and soil organic matter (0.05 ~ 0.25 g·L −1). Essential factors, such as PAM & soil-water pre-soaking time, the number of end-over-end inversion and PAM optimal dosage, were pre ...

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  • Factors affecting flocculation performance of synthetic ...

    2021-1-3 · The objective of this study was to observe the effects of irrigation method and polyacrylamide additions on selected soil physical properties. Polyacrylamide (PAM) was applied to fallow clay loam soil to the rate of 650 kg ha1. The PAM-treated plots were flood-irrigated at the rate of 5 cm wk-1. Untreated plots were either flood-or sprinkle ...

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  • EFFECTS OF POLYACRYLAMIDE AND IRRIGATION

    SPADOTTO & HORNSBY: SOIL SORPTION OF PESTICIDES: MODELING pH EFFECTS 951 centrifuged for 20 min at 10 000 rpm, and the supernatant of pesticide anionic form (Ka) on positively charged soil parti- filtered through a 0.45-␮m filter. The amount of pesticide in cles.

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  • Soil Sorption of Acidic Pesticides: Modeling pH Effects ...

    2021-5-11 · To explore the effects of soil amendments on soil properties and respiration in grey desert soil, we conducted a soil amendment experiment in April 2015. Before initiating the soil spatial heterogeneity reduction experiment, the 0–20 cm soil layer was thoroughly mixed. The application rates of BC, LD, and PAMs were based on a previous study by

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  • Effects of Amendments on Physicochemical Properties

    2021-3-13 · Although nonionic surfactants have been considered in surfactant-aided soil washing systems, there is little information on the particle-size dependence of these processes, and this may have significant implications for the design of these systems. In this study, Triton-100 (TX) was selected to study its effect on the sorption and desorption of two pesticides (Atrazine and Diuron) from ...

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  • anionic polyacrylamide environmental impact function

    Anionic polyacrylamide effects on soil sorption and ... the environmental impact of PAM after its application. The effects of anionic PAM on the sorption characteristics of four widely used herbicides (metolachlor, atrazine, 2,4-D, and picloram) on two natural soils were assessed in …

    Get Price
  • POLYACRYLAMIDE (PAM) FOR IRRIGATION RUNOFF

    2010-11-20 · only modest effects on soil microflora numbers and function and that PAM degrades at a rate of at least 9.8% y-1. Key points of PAM technology are presented. Key words: water quality, erosion, infiltration, environmental safety, acrylamide Introduction This paper summarizes anionic polyacrylamide (PAM) use for erosion and infiltration

    Get Price
  • Polyacrylamide Removes Microorganisms and

    2021-7-13 · Water soluble anionic polyacrylamide (PAM) was found to be a highly effective erosion-preventing and infiltration-enhancing polymer, when applied at rates of 1 to 10 gm-3 in furrow irrigation water. Water flowing from PAM treated irrigation furrows …

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  • ANIONIC POLYACRYLAMIDE POLYMER

    2003-6-1 · The mechanism by which the anionic polymers interact with platelets of 2:1 clay minerals is not fully understood. The objective of the present study was to evaluate the effect of the electric field associated with the basal and edge surfaces of the clay minerals on the adsorption of anionic polymers.

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  • Polyacrylamide adsorption and aggregate stability ...

    Abstract The adsorption characteristics of synthetic organic polymers play a major role in their effects on the stabilization of aggregates. We hypothesized that high molecular weight polymers adsorb on both outer and inner surfaces of large aggregates (>1.0 mm), and thus enhance the resistance of aggregates to external forces (e.g., water drop impact). Adsorption of an anionic polyacrylamide ...

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  • Transfer and degradation of polyacrylamide based ...

    2021-7-13 · 65 production uses about 900 t/y of PAM-based flocculants (i.e. 6% of the total consumption) as 66 clarification aid (UNPG 2013). 67 High molecular weight PAMs can be modified to develop non-ionic, anionic, or cationic properties for 68 specific uses (Scott et al., 1996). However for environmental applications which are described in this

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  • Hydro-mechanical properties of Calcigel

    Calcigel bentonite-polyacrylamide (PAA) composites were investigated for their formation characteristics and their macroscopic hydro-mechanical and microscopic structural properties. The composites prepared were different in terms of the polymer charge, i.e. cationic (PAA + ), anionic (PAA − ), non-ionic (PAA o) and in terms of the polymer-to ...

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  • ADSORPTION AND DESORPTION OF POLYMERS

    2018-5-9 · situ. The following statements summarize the main findings of polymer adsorption studies. Adsorption of polymers on pure clays is strongly influenced by electrostatic attraction whereby the order of adsorption of polymers is cationic > nonionic > anionic. Polymer adsorption occurs on the external surface of clay packages. Therefore, the effects of factors such as clay type and electrolyte ...

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  • Aqueous Polymer Effects on Volumetric Swelling of

    2007-1-1 · Physicochemical interactions between polymer molecules and clay particles affect the swelling rate and magnitude of expansive clay soils. The effectiveness of aqueous solutions of three polymers: Sodium carboxymethyl cellulose (CMC), polyacrylamide (PAM), polyethylene oxide (PEO) ranging in concentration from 0.5 to 10 g ∕ L, as soil stabilization agents against Na-montmorillonite swelling ...

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  • Laboratory studies to examine the impacts of ...

    Laboratory Studies to Examine the Impacts of Polyacrylamide (PAM) on Soil Hydraulic Conductivity. By Emesto A. Moran Dr. Zhongbo Yu, Examination Committee Chair Professor o f Hydrogeology University o f Nevada, Las Vegas Polyacrylamide (PAM) is being suggested as a new technology to reduce seepage losses in unlined irrigation canals. The goals o f this thesis were to quantify the optimum ...

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