Displaying publications 1 - 20 of 34 in total

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  1. Application of Box-Behnken design to mineralization and color removal of palm oil mill effluent by electrocoagulation process
    Rakhmania, Kamyab H, Yuzir MA, Al-Qaim FF, Purba LDA, Riyadi FA
    Environ Sci Pollut Res Int, 2023 Jun;30(28):71741-71753.
    PMID: 34480301 DOI: 10.1007/s11356-021-16197-z
    In this study, palm oil mill effluent (POME) was treated using electrocoagulation, whereby the influencing factors including voltage, electrolysis time, and electrolyte amount were optimized to achieve the highest chemical oxygen demand (COD) and color removal efficiencies. Graphite was selected as electrode material due to its performance better compared to aluminum and copper. Response surface methodology (RSM) was carried out for optimization of the electrocoagulation operating parameters. The best model obtained using Box-Behnken design (BBD) were quadratic for COD removal (R2 = 0.9844), color reduction (R2 = 0.9412), and oil and grease removal (R2 = 0.9724). The result from the analysis of variance (ANOVA) was obtained to determine the relationship between factors and treatment efficiencies. The experimental results under optimized conditions such as voltage 14, electrolysis time of 3 h, and electrolyte amount of 13.41 g/L show that the electrocoagulation process effectively reduced the COD (56%), color (65%), and oil and grease (99%) of the POME treatment. Graphical abstract.
    Matched MeSH terms: Electrocoagulation/methods
  2. Electrocoagulation treatment of raw landfill leachate using iron-based electrodes: Effects of process parameters and optimization
    Huda N, Raman AAA, Bello MM, Ramesh S
    J Environ Manage, 2017 Dec 15;204(Pt 1):75-81.
    PMID: 28865309 DOI: 10.1016/j.jenvman.2017.08.028
    The main problem of landfill leachate is its diverse composition comprising many persistent organic pollutants which must be removed before being discharge into the environment. This study investigated the treatment of raw landfill leachate using electrocoagulation process. An electrocoagulation system was designed with iron as both the anode and cathode. The effects of inter-electrode distance, initial pH and electrolyte concentration on colour and COD removals were investigated. All these factors were found to have significant effects on the colour removal. On the other hand, electrolyte concentration was the most significant parameter affecting the COD removal. Numerical optimization was also conducted to obtain the optimum process performance. Under optimum conditions (initial pH: 7.73, inter-electrode distance: 1.16 cm, and electrolyte concentration (NaCl): 2.00 g/L), the process could remove up to 82.7% colour and 45.1% COD. The process can be applied as a pre-treatment for raw leachates before applying other appropriate treatment technologies.
    Matched MeSH terms: Electrocoagulation/methods*
  3. Removal of arsenic from aqueous solution using electrocoagulation
    Balasubramanian N, Kojima T, Basha CA, Srinivasakannan C
    J Hazard Mater, 2009 Aug 15;167(1-3):966-9.
    PMID: 19231076 DOI: 10.1016/j.jhazmat.2009.01.081
    Removal of arsenic from aqueous solution was carried out using electrocoagulation. Experiments were conducted using mild steel sacrificial anode covering wide range in operating conditions to assess the removal efficiency. The maximum arsenic removal efficiency was recorded as 94% under optimum condition. The electrocoagulation mechanism of arsenic removal has been developed to understand the effect of applied charge and electrolyte pH on arsenic removal efficiency. Further the experimental data were tested with different adsorption isotherm model to describe the electrocoagulation process.
    Matched MeSH terms: Electrocoagulation/methods*
  4. Laparoscopic salpingectomy in tubal pregnancy: prospective randomized trial using endoloop versus electrocautery
    Lim YH, Ng SP, Ng PH, Tan AE, Jamil MA
    J Obstet Gynaecol Res, 2007 Dec;33(6):855-62.
    PMID: 18001454
    Ectopic pregnancy is conventionally managed by laparoscopic salpingectomy. Electrocautery has been used widely to secure hemostasis during salpingectomy. However, this method is associated with a risk of thermal injury to the visceral organs. Endoloop, a pre-tied suture used in laparoscopic surgery may be an alternative treatment tool and its potential use in the management of ectopic pregnancy is explored here. Our study aims to compare the effectiveness of the endoloop technique to electrocautery during laparoscopic salpingectomy for tubal pregnancy.
    Matched MeSH terms: Electrocoagulation*
  5. Atypical Presentation of Pyogenic Granuloma of the Right Index Finger: A Rare Case Report
    Tan LS, Daud MH, Nasirudin N
    J Hand Surg Asian Pac Vol, 2018 Dec;23(4):577-580.
    PMID: 30428790 DOI: 10.1142/S2424835518720335
    Pyogenic granuloma, also known as lobular capillary hemangioma, is a benign vascular lesion of the skin or mucous membrane with rapid growth or repetitive trauma. Rarely seen in adult, its management varies and surgical intervention is usually common. We report a case of pyogenic granuloma of the right index finger in a 46-year-old gentleman who presented with painless swelling of the right index finger after a trivial injury. Wedge biopsy confirmed the diagnosis and excision of the granuloma measuring 3 cm × 3 cm × 2 cm was done with curettage and electrocautery over the base of granuloma. The wound subsequently healed well with good functional and aesthetic outcome.
    Matched MeSH terms: Electrocoagulation/methods*
  6. Sono assisted electrocoagulation process for the removal of pollutant from pulp and paper industry effluent
    Asaithambi P, Aziz ARA, Sajjadi B, Daud WMABW
    Environ Sci Pollut Res Int, 2017 Feb;24(6):5168-5178.
    PMID: 27221586 DOI: 10.1007/s11356-016-6909-5
    In the present work, the efficiency of the sonication, electrocoagulation, and sono-electrocoagulation process for removal of pollutants from the industrial effluent of the pulp and paper industry was compared. The experimental results showed that the sono-electrocoagulation process yielded higher pollutant removal percentage compared to the sonication and electrocoagulation process alone. The effect of the operating parameters in the sono-electrocoagulation process such as electrolyte concentration (1-5 g/L), current density (1-5 A/dm(2)), effluent pH (3-11), COD concentration (1500-6000 mg/L), inter-electrode distance (1-3 cm), and electrode combination (Fe and Al) on the color removal, COD removal, and power consumption were studied. The maximum color and COD removal percentages of 100 and 95 %, respectively, were obtained at the current density of 4 A/dm(2), electrolyte concentration of 4 g/L, effluent pH of 7, COD concentration of 3000 mg/L, electrode combination of Fe/Fe, inter-electrode distance of 1 cm, and reaction time of 4 h, respectively. The color and COD removal percentages were analyzed by using an UV/Vis spectrophotometer and closed reflux method. The results showed that the sono-electrocoagulation process could be used as an efficient and environmental friendly technique for complete pollutant removal.
    Matched MeSH terms: Electrocoagulation/methods*
  7. Fulltext Effect of operating parameters on decolourisation of Palm Oil Mill Effluent (POME) using electrocoagulation process
    Nur Syuhaidah Mohd Aris, Shariff Ibrahim, Borhannuddin Arifin, Yahaya Hawari
    Pertanika Journal of Science & Technology, 2017;25(107):297-206.
    MyJurnal
    Electrocoagulation has proven to be an effective method in the treatment of wastewater. This study evaluated the decolourisation of Palm Oil Mill Effluent (POME) using electrocoagulation (EC) batch reactor by utilising aluminium as sacrificial electrode. POME sample source from a final discharged pond at a palm oil mill was characterised for its colour, chemical oxygen demand (COD), pH, conductivity and turbidity; were found to be 2707 PtCo, 3909 mg/L, 7.63, 12.82 mS/cm and 755 NTU respectively. The respective effects of operating parameters such as pH (3 to 11), applied voltage (5 V to 20 V), plate gap (7.5 to 11.5 cm) and operating time (1 to 8 hours) were investigated. The decolourisation of POME was observed to increase with increasing voltage and operating time. Highest removal efficiency was observed at pH 5, 20 V applied voltage, 9.5 cm plate gap and at 8-hour operating time with colour removal efficiency of 89, 79, 78 and 64% respectively. From the findings, it can be concluded that electrocoagulation process using aluminium electrodes is a reliable technique for the removal of colour from POME.
    Matched MeSH terms: Electrocoagulation
  8. Electrocoagulation of palm oil mill effluent as wastewater treatment and hydrogen production using electrode aluminum
    Nasution MA, Yaakob Z, Ali E, Tasirin SM, Abdullah SR
    J Environ Qual, 2011 Jul-Aug;40(4):1332-9.
    PMID: 21712603 DOI: 10.2134/jeq2011.0002
    Palm oil mill effluent (POME) is highly polluting wastewater generated from the palm oil milling process. Palm oil mill effluent was used as an electrolyte without any additive or pretreatment to perform electrocoagulation (EC) using electricity (direct current) ranging from 2 to 4 volts in the presence of aluminum electrodes with a reactor volume of 20 L. The production of hydrogen gas, removal of chemical oxygen demand (COD), and turbidity as a result of electrocoagulation of POME were determined. The results show that EC can reduce the COD and turbidity of POME by 57 and 62%, respectively, in addition to the 42% hydrogen production. Hydrogen production was also helpful to remove the lighter suspended solids toward the surface. The production of Al(OH)XHO at the aluminum electrode (anode) was responsible for the flocculation-coagulation process of suspended solids followed by sedimentation under gravity. The production of hydrogen gas from POME during EC was also compared with hydrogen gas production by electrolysis of tap water at pH 4 and tap water without pH adjustment under the same conditions. The main advantage of this study is to produce hydrogen gas while treating POME with EC to reduce COD and turbidity effectively.
    Matched MeSH terms: Electrocoagulation/instrumentation; Electrocoagulation/methods*
  9. Fulltext Application of platelet rich fibrin for management of an electrosurge induced osteonecrosis involving maxillary alveolus
    Suresh N, Chandrasekaran B, Muthusamy S, Kannan S, Muthu K
    Singapore Dent J, 2015 Dec;36:39-43.
    PMID: 26684495 DOI: 10.1016/j.sdj.2014.11.004
    BACKGROUND: Application of principles of electrocautery for hemostasis dates back to prehistoric times. Its modern implementation in various fields of general and head and neck surgeries have been well documented. However its usage in minor oral surgical procedures has gained popularity only recently. Complications associated with electro-surgery in the dental field are relatively rare and there is insufficient literature on its management.

    CASE REPORT: We present a case report on management of an electrosurgery induced osteonecrosis involving maxillary alveolus of left premolars.

    DISCUSSION: Inadvertent contact of the electrosurgery tip on bone can result in necrosis making it necessary to remove the sequestrum and graft the defect. Platelet rich fibrin in combination with bone grafts have been well documented to provide successful periodontal regeneration.

    CLINICAL IMPLICATIONS: Our aim of presenting this report is to create awareness among the health care providers regarding electrosurgical injuries. To our knowledge, this is the first time platelet rich fibrin has been used in the management of intraoral electrosurgical injury. Combining bone grafts with platelet rich fibrin is a good alternative as it can be done with relative ease and predictable outcome.

    Matched MeSH terms: Electrocoagulation
  10. Raw landfill leachate treatment using an electrocoagulation process with a novel rotating electrode reactor
    Naje AS, Ajeel MA, Ali IM, Al-Zubaidi HAM, Alaba PA
    Water Sci Technol, 2019 Aug;80(3):458-465.
    PMID: 31596257 DOI: 10.2166/wst.2019.289
    In this work, landfill leachate treatment by electrocoagulation process with a novel rotating anode reactor was studied. The influence of rotating anode speed on the removal efficiency of chemical oxygen demand (COD), total dissolved solids (TDS), and total suspended solids (TSS) of raw landfill leachate was investigated. The influence of operating parameters like leachate pH, leachate temperature, current, and inter-distance between the cathode rings and anode impellers on the electrocoagulation performance were also investigated. The results revealed the optimum rotating speed is 150 rpm and increasing the rotating speed above this value led to reducing process performance. The leachate electrocoagulation treatment process favors the neutral medium and the treatment performance increases with increasing current intensity. Furthermore, the electrocoagulation treatment performance improves with increasing leachate temperature. However, the performance reduces with increasing inter-electrode distance.
    Matched MeSH terms: Electrocoagulation
  11. Optimized parameters of the electrocoagulation process using a novel reactor with rotating anode for saline water treatment
    Al-Raad AA, Hanafiah MM, Naje AS, Ajeel MA
    Environ Pollut, 2020 Oct;265(Pt B):115049.
    PMID: 32599327 DOI: 10.1016/j.envpol.2020.115049
    In this study, a novel rotating anode-based reactor (RAR) was designed to investigate its effectiveness in removing dissolved salts (i.e., Br-, Cl-, TDS, and SO42-) from saline water samples. Two configurations of an impeller's rotating anode with various operation factors, such as operating time (min), rotating speed (rpm), current density (mA/cm2), temperature (°C), pH, and inter-electrode space (cm), were used in the desalination process. The total cost consumed was calculated on the basis of the energy consumption and aluminum (Al) used in the desalination. In this respect, operating costs were calculated using optimal operating conditions. Salinity was removed electrochemically from saline water through electrocoagulation (EC). Results showed that the optimal adjustments for treating saline water were carried out at the following conditions: 150 and 75 rpm rotating speeds for the impeller's rod anode and plate anode designs, respectively; 2 mA/cm2 current density (I), 1 cm2 inter-electrode space, 25 °C temperature, 10 min operation time, and pH 8. The results indicated that EC technology with impeller plates of rotating anode can be considered a very cost-effective technique for treating saline water.
    Matched MeSH terms: Electrocoagulation
  12. A comprehensive review on contaminants removal from pharmaceutical wastewater by electrocoagulation process
    Zaied BK, Rashid M, Nasrullah M, Zularisam AW, Pant D, Singh L
    Sci Total Environ, 2020 Jul 15;726:138095.
    PMID: 32481207 DOI: 10.1016/j.scitotenv.2020.138095
    The pharmaceuticals are emergent contaminants, which can create potential threats for human health and the environment. All the pharmaceutical contaminants are becoming enormous in the environment as conventional wastewater treatment cannot be effectively implemented due to toxic and intractable action of pharmaceuticals. For this reason, the existence of pharmaceutical contaminants has brought great awareness, causing significant concern on their transformation, occurrence, risk, and fate in the environments. Electrocoagulation (EC) treatment process is effectively applied for the removal of contaminants, radionuclides, pesticides, and also harmful microorganisms. During the EC process, an electric current is employed directly, and both electrodes are dissoluted partially in the reactor under the special conditions. This electrode dissolution produces the increased concentration of cation, which is finally precipitated as hydroxides and oxides. Different anode materials usage like aluminum, stainless steel, iron, etc. are found more effective in EC operation for efficient removal of pharmaceutical contaminants. Due to the simple procedure and less costly material, EC method is extensively recognized for pharmaceutical wastewater treatment over further conventional treatment methods. The EC process has more usefulness to destabilize the pharmaceutical contaminants with the neutralization of charge and after that coagulating those contaminants to produce flocs. Thus, the review places particular emphasis on the application of EC process to remove pharmaceutical contaminants. First, the operational parameters influencing EC efficiency with the electroanalysis techniques are described. Second, in this review emerging challenges, current developments and techno-economic concerns of EC are highlighted. Finally, future recommendations and prospective on EC are envisioned.
    Matched MeSH terms: Electrocoagulation
  13. Periorbital syringoma: a pilot study of the efficacy of low-voltage electrocoagulation
    Al Aradi IK
    Dermatol Surg, 2006 Oct;32(10):1244-50.
    PMID: 17034373
    Management of periorbital syringomas is problematic and avoided by many inexperienced physicians. The medical literature presently prefers CO(2) laser resurfacing to many other modalities, but the subject of electrosurgery has not been well explored.
    Matched MeSH terms: Electrocoagulation/instrumentation*
  14. FTIR, CHNS and XRD analyses define mechanism of glyphosate herbicide removal by electrocoagulation
    Danial R, Sobri S, Abdullah LC, Mobarekeh MN
    Chemosphere, 2019 Oct;233:559-569.
    PMID: 31195261 DOI: 10.1016/j.chemosphere.2019.06.010
    In this study, the performance of glyphosate removal in an electrocoagulation batch with two electrodes formed by the same metal type, consisting of aluminum, iron, steel and copper have been compared. The aim of this study intends to remove glyphosate from an aqueous solution by an electrocoagulation process using metal electrode plates, which involves electrogeneration of metal cations as coagulant agents. The production of metal cations showed an ability to bind together to form aggregates of flocs composed of a combination of glyphosate and metal oxide. Electrocoagulation using aluminum electrodes indicated a high percentage removal of glyphosate, 94.25%; followed by iron electrodes, 88.37%; steel electrodes, 62.82%; and copper electrodes, 46.69%. The treated aqueous solution was then analyzed by Fourier Transform Infrared Spectroscopy. Percentages of Carbon, Hydrogen, Nitrogen, Sulfur remaining in the treated aqueous solution after the electrocoagulation process have been determined. The treated water and sludge were characterized and the mechanism of the overall process was concluded as an outcome. An X-Ray Diffraction analysis of dried sludge confirmed that new polymeric compounds were formed during the treatment. The sludge composed of new compounds were also verified the removals. This study revealed that an electrocoagulation process using metal electrodes is reliable and efficient.
    Matched MeSH terms: Electrocoagulation/methods
  15. Boron removal by electrocoagulation and recovery
    Isa MH, Ezechi EH, Ahmed Z, Magram SF, Kutty SR
    Water Res, 2014 Mar 15;51:113-23.
    PMID: 24412846 DOI: 10.1016/j.watres.2013.12.024
    This work investigated the removal of boron from wastewater and its recovery by electrocoagulation and hydrothermal mineralization methods respectively. The experimental design was developed using Box-Behnken Model. An initial study was performed based on four preselected variables (pH, current density, concentration and time) using synthetic wastewater. Response surface methodology (RSM) was used to evaluate the effect of process variables and their interaction on boron removal. The optimum conditions were obtained as pH 6.3, current density 17.4 mA/cm(2), and time 89 min. At these applied optimum conditions, 99.7% boron removal from an initial concentration of 10.4 mg/L was achieved. The process was effectively optimized by RSM with a desirability value of 1.0. The results showed that boron removal efficiency enhanced with increase in current density and treatment time. Removal efficiency also increased when pH was increased from 4 to 7 and subsequently decreased at pH 10. Adsorption kinetics study revealed that the reaction followed pseudo second order kinetic model; evidenced by high correlation and goodness of fit. Thermodynamics study showed that mechanism of boron adsorption was chemisorption and the reaction was endothermic in nature. Furthermore, the adsorption process was spontaneous as indicated by negative values of the adsorption free energy. Treatment of real produced water using electrocoagulation resulted in 98% boron removal. The hydrothermal mineralization study showed that borate minerals (Inyoite, Takadaite and Nifontovite) can be recovered as recyclable precipitate from electrocoagulation flocs of produced water.
    Matched MeSH terms: Electrocoagulation/methods*
  16. Fulltext A case of recurrent respiratory papillomatosis successfully removed via endoscopic argon plasma coagulation (APC) with no evidence of recurrence
    Wong JL, Tie ST, Lee J, Kannan SK, Rashid Ali MR, Ibrahim A, et al.
    Med J Malaysia, 2014 Aug;69(4):195-6.
    PMID: 25500852 MyJurnal
    Recurrent respiratory papillomatosis (RRP) is a benign disease caused by the human papilloma virus (HPV), characterized by the formation of recurrent, epithelial neoplastic lesions in the airways. While benign, they can cause significant airway obstruction in some cases. Difficulties in treatment arise from the recurrent nature of the lesions despite repeated procedures. Other known procedures that result in deep tissue damage also cause unacceptable collateral damage to the underlying airway mucosa. We describe a case of recurrent papillomatosis that was successfully treated with argon plasma coagulation ( APC) when laser and electrocautery ablation had failed in the past. After the papillomatasis was treated with APC, there is no recurrence on repeat scope at 4 months and 9 months after the initial procedure. The procedure was done as a day case and there is no complication from the procedure. The property of the APC that allows it to cause only superficial thermal damage to the tissue makes it a suitable adjunct therapy to the treatment of papillomas, which are usually superficial lesions.
    Matched MeSH terms: Electrocoagulation
  17. Fulltext A novel technique for the management of blandin-nuhn mucocele: a case report
    Kumaresan R, Karthikeyan P, Mohammed F, Thapasum Fairozekhan A
    Int J Clin Pediatr Dent, 2013 Sep;6(3):201-4.
    PMID: 25206223 DOI: 10.5005/jp-journals-10005-1219
    Mucocele, a common benign cystic lesion of minor salivary gland and associated ducts develops following extravasation or retention of mucous material in the subepithelial tissue. Occurrence of mucocele of tongue is considered less frequent when compared to a higher incidence of mucocele in the lower lip of young patients. Different modalities of treatment, such as conventional surgical excision followed by newer techniques like cryosurgery, electrocautery have been proposed to completely remove the lesion and reduce the chances of recurrence. Herewith, we report a novel treatment technique using alginate impression material to aid in complete excision of mucocele of glands of Blandin-Nuhn. How to cite this article: Kumaresan R, Karthikeyan P, Mohammed F, Fairozekhan TA. A Novel Technique for the Management of Blandin-Nuhn Mucocele: A Case Report. Int J Clin Pediatr Dent 2013;6(3):201-204.
    Matched MeSH terms: Electrocoagulation
  18. Fulltext Ultracision versus electrocautery in performing modified radical mastectomy and axillary lymph node dissection for breast cancer: a prospective randomized control trial
    Muhammad R, Johann KF, Saladina JJ, Mohd Latar NH, Niza ASS
    Med J Malaysia, 2013 Jun;68(3):204-7.
    PMID: 23749007 MyJurnal
    Treatment for breast cancer has improved dramatically over the decades. Nevertheless, modified radical mastectomy with axillary dissection remains the standard treatment for most patients, especially those with big tumours. The conventional technology is to use diathermy to cut and coagulate blood vessels. The Ultracision dissector has been widely used in laparoscopic surgery and is documented to be safe and fast for cutting and coagulating tissue. The aim of this study is to compare ultracision to electrocautery, looking in terms of amount of post operative drainage, duration of drain days, seroma formation and other complications.
    Matched MeSH terms: Electrocoagulation
  19. Abnormal per rectal bleed
    Singh AH
    Scott Med J, 2011 Feb;56(1):59.
    PMID: 21515535 DOI: 10.1258/smj.2010.010026
    A 3-year old girl presented to our A&E with a complaint of an acute event of per rectal bleed. The parent had given a history of a visit to a nearby waterfall one day ago. Upon admission she developed hypotension and had a fainting episode due to the excessive passing of blood per rectum. The case report shows how the appropriate investigations were carried out and the twist behind the cause.
    Matched MeSH terms: Electrocoagulation
  20. Electrocoagulation using a rotated anode: A novel reactor design for textile wastewater treatment
    Naje AS, Chelliapan S, Zakaria Z, Abbas SA
    J Environ Manage, 2016 Jul 1;176:34-44.
    PMID: 27039362 DOI: 10.1016/j.jenvman.2016.03.034
    This paper investigates the optimum operational conditions of a novel rotated bed electrocoagulation (EC) reactor for the treatment of textile wastewater. The effect of various operational parameters such as rotational speed, current density (CD), operational time (RT), pH, temperature, and inter-electrode distance (IED) on the pollutant removal efficiency were examined. In addition, the consumption of aluminum (Al) and electrical energy, as well as operating costs at optimum conditions were also calculated. The results indicated that the optimum conditions for the treatment of textile wastewater were achieved at CD = 4 mA/cm(2), RT = 10 min, rotational speed = 150 rpm, pH = 4.57, temperature = 25 °C, and IED = 1 cm. The electrode consumption, energy consumption, and operating costs were 0.038 kg/m(3), 4.66 kWh/m(3) and 0.44 US$/m(3), respectively. The removal efficiencies of chemical oxygen demand (COD), biological oxygen demand (BOD), total suspended solid (TSS), turbidity and color were 97.10%, 95.55%, 98%, 96% and 98.50%, respectively, at the first 10 min of reaction time, while the phenol compound of the wastewater was almost entirely removed (99.99%). The experimental results confirm that the new reactor design with rotated anode impellers and cathode rings provided high treatment efficiency at a reduced reaction time and with lower energy consumption.
    Matched MeSH terms: Electrocoagulation
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