Analysis and Optimization of Mn Removal from Contaminated Solid Matrixes by Electrokinetic Remediation

Cameselle, Claudio; Gouveia, Susana; Cabo, Adrián

doi:10.3390/ijerph17061820

Cited by 8 publications

(6 citation statements)

References 35 publications

(42 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Arah aliran EOF pada bentonit searah dengan katoda 9 . Begitu pula halnya dengan kaolin yang termasuk lempung, muatan permukaan tanahnya negatif, sehingga arah aliran EOF cenderung menuju katoda 13,14,15,19,20 . Beberapa penelitian menunjukkan bahwa arah EOF menuju anoda dikarenakan zeta potensial pada permukaan kaolin positif yang disebabkan oleh adsorbsi logam berat 30 .…”

Section: Eof Pada Kaolin Dan Bentonitunclassified

“…Hal tersebut disebakan oleh lebih kuatnya kontaminan yang terserap dalam mineral dan fraksi organik tanah alami yang terkontaminasi maupun tanah yang telah lama terkontaminasi 13 . Kaolin memiliki kapasitas penyangga 15 dan kapasitas tukar kation yang lebih rendah dari mineral lainnya 17,15,21,23,24 . Kapasitas tukar kationnya yang rendah memfasilitasi karakterisasi remediasi elektrokinetik pada konsentrasi kontaminan dengan laju pertukaran ion yang cepat 19 .…”

Section: Diskusi Publikasi Remediasi Elektrokinetik Logam Berat Denga...unclassified

“…Kapasitas tukar kationnya yang rendah memfasilitasi karakterisasi remediasi elektrokinetik pada konsentrasi kontaminan dengan laju pertukaran ion yang cepat 19 . Penggunaan kaolin dengan ukuran partikel yang kecil dapat mensimulasikan sifat permeabiltas rendah yang dimiliki tanah lempung 15,21 . Kaolinite memiliki plastisitas yang rendah dan lebih efektif untuk remediasi elektrokinetik 19,20 .…”

Section: Diskusi Publikasi Remediasi Elektrokinetik Logam Berat Denga...unclassified

“…Mekanisme yang dimaksud adalah adanya pergerakan molekul air yang terbawa oleh kation dan anion menuju ke elektroda yang memiliki muatan berlawanan 1 . Prinsip penyisihan logam berat di tanah dengan metode EKR didasarkan pada solubilitas dan mobilitas logam berat dalam fluida perantara, yaitu dengan elektromigrasi untuk logam bermuatan dan elektroosmosis untuk logam netral 15 . Permukaan partikel lempung bermuatan negatif, untuk mengimbangi muatan tersebut, permukaan lempung menarik kation dari air pori.…”

Section: Eof Pada Kaolin Dan Bentonitunclassified

See 3 more Smart Citations

Sistematik Review: Perbandingan Penggunaan Kaolin dan Bentonit dalam Penelitian Remediasi Elektrokinetik untuk Penyisihan Logam Berat

Safitri

Budihardjo

Samadikun

2022

Jurnal Kesehatan Lingkungan Indonesia

View full text Add to dashboard Cite

Latar belakang: Perbedaan mekanisme remediasi elektrokinetik salah satunya disebabkan oleh distribusi gugus ≡SOH yang berbeda beda pada jenis lempung yang dapat mengontrol muatan permukaan lempung. Bentonit dan kaolin merupakan jenis lempung yang seringkali digunakan dalam penelitian remediasi elektrokinetik tanah terkontaminasi logam berat. Oleh karenanya, tujuan dari review jurnal ini adalah mengkaji perbandingan penggunaan kaolin dan bentonit dalam remediasi elektrokinetik tanah terkontaminasi logam berat, baik dalam publikasi penelitiannya, karakteristiknya dan pengaruhnya terhadap mekanisme remediasi elektrokinetik.Metode: Metode yang digunakan dalam review jurnal ini adalah systematic literature review, yang terdiri dari tahap identifikasi kata kunci, screening dokumen terpublikasi dan pemilihan jurnal berdasarkan kriteria-kriteria tertentu. Data base yang digunakan berasal dari Scopus, Science Direct dan Springer. Dokumen yang telah terpilih selanjutnya dianalisis dan dibandingkan. Hasil: Sebanyak 92% dari dokumen terpilih menggunakan kaolin dalam peneltian EKR, sedangkan 8% lainnya menggunakan bentonit. Berdasarkan karakteristiknya, bentonit memiliki daya adsorbsi yang lebih tinggi dari kaolin, namun, memiliki efisiensi penyisihan yang lebih rendah dari kaolin. Dalam pengaruhnya terhadap mekanisme remediasi elektrokinetik, arah aliran EOF kaolin maupun bentonit pada umumnya menuju katoda, namun bentonit dapat menyerap elektrolit lebih banyak dari kaolin, sehingga memiliki kadar air yang lebih tinggi. Sedangkan untuk konsumsi energi, remediasi elektrokinetik pada kaolin memerlukan energi yang lebih rendah dari bentonit.Simpulan: Bentonit dan kaolin memiliki perbedaan karakteristik pada kapasitas adsorbsi, efisiensi penyisihan logam berat, dan konsumsi energi. Meskipun arah aliran EOF pada bentonit dan kaolin sama, namun kapasitas penyerapan elektrolit pada bentonit lebih besar dari kaolin. ABSTRACTTitle: Research Study on the Use of Kaolin and Bentonite in Electrokinetic Remediation for Heavy Metal RemovalBackground: One of the differences in the electrokinetic remediation mechanism is caused by the distribution of different ≡SOH groups on the type of clay that can control the surface charge of the clay. Bentonite and kaolin are types of clay that are often used in the study of electrokinetic remediation of heavy metal contaminated soils. Therefore, the purpose of this journal review is to compare the use of kaolin and bentonite in the electrokinetic remediation of heavy metal contaminated soils, both in their research publications, their characteristics and their effect on the electrokinetic remediation mechanism. Method: The method used in this journal review is a systematic literature review consisting of keyword identification, screening published documents and selecting journals based on certain criteria. The database used comes from Scopus, Science Direct and Springer. The selected documents are then analyzed and compared.Result: As many as 92% of the selected documents used kaolin in the EKR study, while 8% used bentonite. Based on its characteristics, bentonite has a higher adsorption capacity than kaolin. However, it has a lower removal efficiency than kaolin. In its influence on the electrokinetic remediation mechanism, the flow direction of kaolin and bentonite EOF is generally towards the cathode, but bentonite can absorb more electrolytes than kaolin, so it has higher water content. As for energy consumption, electrokinetic remediation on kaolin requires lower energy than bentonite.Conclusion: Bentonite and kaolin have different characteristics in adsorption capacity, heavy metal removal efficiency, and energy consumption. Although the direction of EOF flow in bentonite and kaolin is the same, the electrolyte absorption capacity of bentonite is greater than that of kaolin.

show abstract

Section: Eof Pada Kaolin Dan Bentonitunclassified

Section: Diskusi Publikasi Remediasi Elektrokinetik Logam Berat Denga...unclassified

Section: Eof Pada Kaolin Dan Bentonitunclassified

See 2 more Smart Citations

Sistematik Review: Perbandingan Penggunaan Kaolin dan Bentonit dalam Penelitian Remediasi Elektrokinetik untuk Penyisihan Logam Berat

Safitri

Budihardjo

Samadikun

2022

Jurnal Kesehatan Lingkungan Indonesia

View full text Add to dashboard Cite

show abstract

“…The increase in the moisture content clearly favored the electromigration of manganese towards the cathode. The increase in the moisture content up to 0.60 g g −1 resulted in over 90% manganese removal [ 36 ]. On the other hand, as an efficient water-saving irrigation model, controlled irrigation (CI) is widely used in China [ 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Luan

Zhou

et al. 2022

IJERPH

View full text Add to dashboard Cite

Electrokinetic remediation (EKR) is a viable, advanced cleaning strategy that can permanently reduce the toxicity of soil contaminants. However, EKR is prone to causing changes in soil pH. The negative impacts must be minimized if field-scale application is to be realized. In this study, EKR with polarity reversal was used to avoid soil pH polarization and to clean up cadmium (Cd)-contaminated paddy soils. Results showed that Cd desorbed from oxidizable and residual fractions to labile and easily available parts. Soil moisture content above 0.35 g g−1 was conductive to achieving the desirable Cd-migration rate. The exchangeable Cd phase eventually migrated from both ends of that soil compartment towards the intermediate. Moreover, the addition of citric acid at the concentration of 0.1 mol L−1 was an effective enhancement strategy. The methodology enriched Cd contaminants to specific sites. The technology can be used for electrokinetic-assisted phytoremediation during the rice growing period. Hyperaccumulator is planted in the intermediate area to remove the Cd contaminants. On the other hand, Cd removal is achieved in the region close to the electrodes. The present study provides a theoretical basis for in situ remediation. It has a wider significance for field-scale application.

show abstract

Insights into enhanced electrokinetic remediation of copper-contaminated soil using a novel conductive membrane based on nanoparticles

Behrouzinia

Ahmadi

Abbasi

2021

Environ Geochem Health

View full text Add to dashboard Cite

Electrokinetic remediation is a process in which a direct electric current is applied across a section of contaminated soil to remove metals. To improve the electrokinetic remediation in this study, a conductive membrane was fabricated via in-situ chemical polymerization employing Pyrrole and copper oxide nanoparticles. The fabricated membrane was placed in an electric field as part of the electrode structure. A physical model was constructed and filled with copper contaminated kaolinite in the concentration of 200 mg/kg. To control the pH, 0.1 M citric acid and 0.01 M potassium chloride were used as the electrolyte solutions. The results showed that the minimum surface resistivity of the fabricated membrane under a maximum pressure of 8.2 (kPa) was 2.55 kΩ /m 2 . The experimental results demonstrated that the use of citric acid as an electrolyte was more useful to desorb the copper due to the formation of the copper-citrate complex. Also, the results showed that employing the fabricated membrane (as part of the electrode structure) accelerated the removal of the copper by the use of the enhancing agents. The average percentage decrease of copper (with the use of fabricated membrane relative to the control test) was 51% and 21% in GM-2/CT-2 and GM-1/CT-1, respectively.The highest power consumption was obtained in experiments using citric acid. Due to the higher removal efficiency of copper in GM-2, the energy utilization efficiency () increased and reached 29.9 near  value of GM-1 with the lowest power consumption.

show abstract

Analysis and Optimization of Mn Removal from Contaminated Solid Matrixes by Electrokinetic Remediation

Cited by 8 publications

References 35 publications

Sistematik Review: Perbandingan Penggunaan Kaolin dan Bentonit dalam Penelitian Remediasi Elektrokinetik untuk Penyisihan Logam Berat

Sistematik Review: Perbandingan Penggunaan Kaolin dan Bentonit dalam Penelitian Remediasi Elektrokinetik untuk Penyisihan Logam Berat

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Insights into enhanced electrokinetic remediation of copper-contaminated soil using a novel conductive membrane based on nanoparticles

Contact Info

Product

Resources

About