Enhanced performance of a direct contact membrane distillation system via in-situ thermally activated H2O2 oxidation for the treatment of landfill leachate

Aftab，Bilal1,2; Truong，Hai Bang1; Cho，Jinwoo1; Hur，Jin1

2022-06-15

10.1016/j.memsci.2022.120478

JOURNAL OF MEMBRANE SCIENCE   影响因子和分区

0376-7388

1873-3123

In this study, an integrated system of self-enhanced membrane distillation (MD) with HO oxidation was explored for the efficient treatment of landfill leachate, in which the heat energy required for MD operation was harvested for HO activation. Organic composition of the leachate was explored during the filtration processes via fluorescence excitation emission matrix combined with parallel factor analysis, which identified three different organic fractions (i.e., tryptophan-like C1, fulvic-like C2, and humic-like C3) in the extracted membrane foulants as well as in the membrane concentrate. C1 was the main organic fraction in the foulant, while C3 was dominant in the leachate concentrate. Moreover, HO was successfully activated by the in situ thermal energy (i.e., temperature difference) and pristine Fe ions in the leachate, resulting in significant (48%) oxidation of bulk organic matter. Preferential removal of the main fouling fraction (i.e., C1) from the bulk landfill leachate occurred under the optimal HO dose of 1.5 g/L. With respect to the HO dose on the feed side of the assisted MD setup, there was a considerable increase in the membrane flux, a 24% higher membrane flux recovery, and 1.5 times more filtered volume, as compared to the reference run without oxidation. The addition of HO to the conventional MD also led to a significant (93%) removal of the bio-refractory humic-like C3 fraction from the membrane concentrate. The results of this study demonstrated the successful operation of assisted MD based on the in-situ energy utilization for HO activation, which led to a drastic improvement in the performance of the system and the production of low-strength, reclaimable leachate concentrate.

EEM-PARAFAC H2O2 oxidation Landfill leachate Membrane distillation Membrane fouling

SCI ; EI

英语

其他

National Research Foundation of Korea[2020R1A4A2002823];

Engineering ; Polymer Science

Engineering, Chemical ; Polymer Science

WOS:000790512200001

ELSEVIER

20221311852275

Amino acids ; Chemical activation ; Distillation ; Energy utilization ; Leachate treatment ; Membrane fouling ; Membranes

Energy Utilization:525.3 ; Metals Corrosion:539.1 ; Chemical Reactions:802.2 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Materials Science:951

CHEMISTRY

2-s2.0-85126928409

Scopus

1.Department of Environment and Energy,Sejong University,Seoul,209 Neungdong-ro, Gwangjin-gu,05006,South Korea
2.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China

Aftab，Bilal,Truong，Hai Bang,Cho，Jinwoo,et al. Enhanced performance of a direct contact membrane distillation system via in-situ thermally activated H2O2 oxidation for the treatment of landfill leachate[J]. JOURNAL OF MEMBRANE SCIENCE,2022,652.

Aftab，Bilal,Truong，Hai Bang,Cho，Jinwoo,&Hur，Jin.(2022).Enhanced performance of a direct contact membrane distillation system via in-situ thermally activated H2O2 oxidation for the treatment of landfill leachate.JOURNAL OF MEMBRANE SCIENCE,652.

Aftab，Bilal,et al."Enhanced performance of a direct contact membrane distillation system via in-situ thermally activated H2O2 oxidation for the treatment of landfill leachate".JOURNAL OF MEMBRANE SCIENCE 652(2022).