Humic acid as a fouling agent in filtration

Nyström, Marianne; Ruohomäki, Kati; Kaipia, Lena

doi:10.1016/s0011-9164(96)00095-1

Cited by 98 publications

(33 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Human activities greatly enhanced the water complexity and increased drinking water health risk, especially in developing countries [15,16]. DOM in natural water with anthropogenic influence (or micropolluted water) presents as a complex mixture comprising of humic acid, fulvic acid, carbohydrates, proteins, and other synthetic organic pollutants [17,18]. However, the knowledge on the removal of such complex aqueous organic matter by PACs with different particle sizes is still inadequate.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of DOM by PACs with Different Particle Sizes

Shi

Fang

et al. 2014

CLEAN Soil Air Water

View full text Add to dashboard Cite

Particle size of powdered activated carbon (PAC) is an important factor influencing the adsorption behavior of organic matter, but the effect of PAC particle size on the removal of different fractions of dissolved organic matter (DOM) is still not well understood. In this work, natural water from a site with anthropogenic influence was used as test water, and the adsorption behavior of different DOM fractions onto three PACs with different particle size was investigated. The results demonstrated that the DOM removal was enhanced 83.3% when the PAC particle size decreased from 76.0 to 19.1 mm. The majority of increased adsorption capacity could be ascribed to microbial by-product and humiclike fractions, or to mid-molecular weight fraction DOM. With the decrease of PAC particle size, the adsorption kinetic constant of low-molecular fraction was greatly enhanced, but the adsorption capacity was enhanced less significantly. By comparing the Brunauer-Emmett-Teller surface area and pore size distribution of PACs with different particle sizes, it was confirmed that the improvement of adsorption by reducing PAC particle size could be attributed to the increase of accessible PAC surface area and decrease of diffusion distance for DOM molecules.

show abstract

Section: Introductionmentioning

confidence: 99%

Adsorption Behavior of DOM by PACs with Different Particle Sizes

Shi

Fang

et al. 2014

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…Aquatic humic substances exhibit an important role in the properties and functions of natural water systems. Humic matter concentrations generally encountered in natural waters are in the range of 0.1 to 10 mg/L [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of humic acid on acid-activated Greek bentonite

Doulia

Leodopoulos

Gimouhopoulos

et al. 2009

Journal of Colloid and Interface Science

183

View full text Add to dashboard Cite

“…In addition, it is suspected that aluminum exposure aids in the development or acceleration of the onset of Alzheimer's diseases (8). Humic substances also tend to foul membranes seriously and thus limit membrane application in this field (9). Removing humic substances by conventional adsorbents often leads to difficulties because of the water-soluble formations and their wide ranges of molecular weight and size distribution (2,10).…”

Section: Introductionmentioning

confidence: 99%