Study on the removal of biodegradable NOM from seawater using biofiltration

Simon, F. Xavier; Rudé, E.; Llorens, Joan; Baig, Sylvie

doi:10.1016/j.desal.2013.01.023

Cited by 26 publications

(7 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…While this conclusion will hopefully change the way we analyze TOrCs biotransformations, ATP itself has been frequently used as an important biomass indicator in drinking water biofiltration systems for natural organic matter (NOM) transformation (Pharand et al, 2014;Chen et al, 2016;Kirisits et al, 2019). This is not surprising since NOM is used as a substrate by the microbial communities in various environments such as soil, sediment, marine, and freshwater (Kolehmainen et al, 2007;Huang et al, 2011;Diem et al, 2013;Simon et al, 2013). However, TOrCs are not considered as substrates per se and their concentrations are by definition generally considered as too low for biomass maintenance and growth and therefore efficient degradation.…”

Section: Revision Of Biotransformation Rate Calculationsmentioning

confidence: 99%

Microbial Biomass, Composition, and Functions Are Responsible for the Differential Removal of Trace Organic Chemicals in Biofiltration Systems: A Batch Study

Cao¹,

Wolff²,

Liguori³

et al. 2022

Front. Water

View full text Add to dashboard Cite

Biofiltration processes help to remove trace organic chemicals (TOrCs) both in wastewater and drinking water treatment systems. However, the detailed TOrCs biotransformation mechanisms as well as the underlying drivers behind the variability of site specific transformation processes remain elusive. In this study, we used laboratory batch incubations to investigate the biotransformation of 51 TOrCs in eight bioactive filter materials of different origins treating a range of waters, from wastewater effluents to drinking water. Microscopy, 16S rRNA amplicon and whole metagenome sequencing for assessing associations between the biotransformation rate constants, microbial composition and genetic potential complemented chemical analysis. We observed strong differences in the mean global removal of TOrCs between the individual sand filters (−1.4–58%), which were mirrored in overall biomass, microbial community composition, and enzyme encoding genes. From the six investigated biomass markers, ATP turned out to be a major predictor of the mean global biotransformation rate, while compound specific biotransformations were correlated with the microbial community composition. High biomass ecosystems were indicated in our systems by a dominance of Nitrospirae, but individual TOrC biotransformation showed a correlation with rare taxa (<2%) such as Hydrogenophaga, or individual functions such as the enoyl-CoA hydratase/3-hydroxyacyl-CoA dehydrogenase encoding genes. In general, this study provides new insights into so far rarely addressed variability of TOrCs biotransformation. We propose potential novel biological indicators for the removal performance of TOrCs in biofiltration systems, highlighting the role of living biomass in predicting and normalizing the global transformation, and the role of the microbial community for the individual transformation of TOrCs in engineered and natural systems.

show abstract

Section: Revision Of Biotransformation Rate Calculationsmentioning

confidence: 99%

Microbial Biomass, Composition, and Functions Are Responsible for the Differential Removal of Trace Organic Chemicals in Biofiltration Systems: A Batch Study

Cao¹,

Wolff²,

Liguori³

et al. 2022

Front. Water

View full text Add to dashboard Cite

show abstract

“…Media tersebut termasuk karbon aktif (21,22) , kerikil, bio-ball, media keramik, atau media terstruktur dari plastik (19) . Filtrasi biologis telah diteliti untuk menghilangkan zat organik alami (Natural Organic Matter, NOM (21,23) dan zat karbon organik terlarut (22,24) .…”

Section: Latar Belakangunclassified

Peningkatan Kualitas Air Baku dari Sungai Surabaya dengan Proses Biofiltrasi

2020

View full text Add to dashboard Cite

Surabaya River is a source of raw water for the needs of the community in Surabaya and its surrounding areas, including for industrial and the Surabaya water supply company. Along with the rapid growth of settlements and the development of the industrial sector, the Surabaya River pollution level has increased so that the quality of the water does not meet the quality standards required as raw water for drinking water. The most potential parameter that causes the level of pollution is organic pollutants. The concentration of some water quality parameters including organic pollutants in the Surabaya River has exceeded class I water quality standards based on Government Regulation (PP) No. 82 of 2001, namely for allotment of raw water for drinking water. The purpose of this study was to improve the raw water quality such as parameters of suspended solids (TSS), organic substances, detergents and manganese (Mn) through the application of biofilter technology. The study was conducted by operating a biofilter pilot plant consisting of a lamella-type settling tank and a biofilter reactor filled with wasp-type nesting media. The results showed that the biofilter process used can reduce the concentration of TSS, organic matter, detergents and Mn in raw water. In general, the longer the hydraulic residence time (HRT) in the biofilter pilot plant, the greater the efficiency of removing TSS, organic matter, and detergent in raw water. The experiments results at the conditions of the shortest total HRT of 81 minutes, including HRT of 36 minutes in the settling tank and HRT of 45 minutes in the biofilter reactor, could obtain TSS removal efficiency of 46.92%, 15.97% for organic matter, and 55% for detergent, where the concentration of these parameters meets the quality standards for drinking water.Keywords: biofiltration, HRT, drinking water, water qualityABSTRAKSungai Surabaya merupakan sumber air baku untuk kebutuhan masyarakat di wilayah Surabaya dan sekitarnya, termasuk untuk kebutuhan industri dan air baku PDAM kota Surabaya. Seiring pesatnya pertumbuhan pemukiman dan perkembangan sektor industri, mengakibatkan tingkat pencemaran Sungai Surabaya semakin tinggi sehingga kualitas airnya tidak memenuhi ketentuan baku mutu yang dipersyaratkan sebagai air baku air minum. Parameter yang paling potensial menyebabkan tingkat pencemaran tersebut adalah polutan organik. Konsentrasi beberapa parameter kualitas air termasuk polutan organik di sungai Surabaya telah melebihi baku mutu air kelas I berdasarkan Peraturan Pemerintah (PP) No 82 tahun 2001, yakni untuk peruntukan air baku air minum. Tujuan dari penelitian ini adalah untuk melakukan peningkatan kualitas air baku seperti parameter padatan tersuspensi (TSS), zat organik, deterjen dan mangan (Mn) melalui penerapan teknologi biofilter. Penelitian dilakukan dengan mengoperasikan pilot plant biofilter yang terdiri dari bak pengendap tipe lamella dan reaktor biofilter yang diisi dengan media plastik tipe sarang tawon. Hasil penelitian menujukkan bahwa proses biofilter yang digunakan dapat menurunkan konsentrasi TSS, zat organik, deterjen dan Mn di dalam air baku. Secara umum semakin lama waktu tinggal di dalam pilot plant biofilter, efisiensi penghilangan TSS, zat organik, dan deterjen di dalam air baku semakin besar. Hasil percobaan pada kondisi total waktu tinggal terpendek (total HRT) 81 menit, meliputi HRT di bak pengendap 36 menit dan HRT di reaktor biofilter 45 menit, didapatkan efisensi penghilangan TSS 46,92 %, zat organik 15,97 %, dan deterjen 55 %, dimana konsentrasi parameter-parameter tersebut memenuhi baku mutu untuk air minum.Kata kunci: biofiltrasi, HRT, air minum, kualitas air

show abstract

“…These include coagulation-flocculation [1][2][3][4], electro-coagulation [5], oxidation [6], photocatalysis [7], biofiltration [8], and membrane technology [4,[9][10][11]. However, these methods are not widely used due to their high costs and economic disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Zulfikar

Wahyuningrum

Mukti

et al. 2015

Desalination and Water Treatment

View full text Add to dashboard Cite

A B S T R A C TThe aim of this study is to investigate the use of moleculary imprinted polymers (MIPs) material as an alternative adsorbent for the adsorption of humic acid (HA) from peat water in batch mode. The MIPs were prepared with methyl methacrylate as a monomer, HA as templates, ethylene glycoldimethacrylate as a cross-linker, and dimethyl formamide as a solvent. The characteristics of MIPs were evaluated using Fourier transform infra-red spectroscopy, scanning electron microscope, and Brunauer-Emmett-Teller methods. The Langmuir, Freundlich, and Sips models were applied to describe the equilibrium isotherms using non-linear regression analysis. Pseudo-first-order, pseudo-second-order, intraparticles, and Boyd kinetic models were used to describe the kinetic data. The results showed that the equilibrium contact time was 60 min. The experimental results indicated that the percentage of sorption increases with an increase in the adsorbent dosage and temperature. The adsorption percentage decreased with increasing peat water pH from 2 to 12. The equilibrium data fitted well for the Langmuir adsorption isotherms, with monolayer adsorption capacity of MIPs found to be 45.45 mg/g. The results of the kinetic study show that the adsorption of HA onto MIPs could be described by the pseudo-second-order kinetic model with a rate constant in the range of 0.034-0.115 g/mg min and controlled by film diffusion, with the effective diffusion coefficient was found in the range of 7.42 × 10 −8 -13.84 × 10 −8 cm 2 /s. Thermodynamic parameters data indicated that under the experimental conditions, the HA adsorption process was non-spontaneous and endothermic, with the Gibbs free energy (ΔG˚) in the range of 3.71-1.17 kJ/mol, whereas enthalpy (ΔH˚) and entropy (ΔS˚) at 16.17 and 42.70 J mol −1 , respectively.

show abstract

Study on the removal of biodegradable NOM from seawater using biofiltration

Cited by 26 publications

References 68 publications

Microbial Biomass, Composition, and Functions Are Responsible for the Differential Removal of Trace Organic Chemicals in Biofiltration Systems: A Batch Study

Microbial Biomass, Composition, and Functions Are Responsible for the Differential Removal of Trace Organic Chemicals in Biofiltration Systems: A Batch Study

Peningkatan Kualitas Air Baku dari Sungai Surabaya dengan Proses Biofiltrasi

Molecularly imprinted polymers (MIPs): a functional material for removal of humic acid from peat water

Contact Info

Product

Resources

About