scholarly journals Highly Effective Cow Bone Based Biocomposite for the Sequestration of Organic Pollutant Parameter from Palm Oil Mill Effluent in a Fixed Bed Column Adsorption System

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 86
Author(s):  
Adeleke A. Oyekanmi ◽  
Mohammed B. Alshammari ◽  
Mohamad Nasir Mohamad Ibrahim ◽  
Marlia Mohd Hanafiah ◽  
Ashraf Y. Elnaggar ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Flow Rate ◽  
Palm Oil ◽  
Organic Pollutant ◽  
Fixed Bed ◽  
Palm Oil Mill Effluent ◽  
Breakthrough Time ◽  
Fixed Bed Column ◽  
Column Adsorption ◽  
Palm Oil Mill

The reduction of chemical oxygen demand (COD) from palm oil mill effluent (POME) is very significant to ensure aquatic protection and the environment. Continuous adsorption of COD in a fixed bed column can be an effective treatment process for its reduction prior to discharge. Adsorption capacity of bone derived biocomposite synthesized from fresh cow bones, zeolite, and coconut shells for the reduction in the organic pollutant parameter was investigated in this study in a fixed bed column. The effect of influent flow rate (1.4, 2.0, and 2.6 mL/min) was determined at an influent pH 7. The optimum bed capacity on the fabricated composite of surface area of 251.9669 m2/g was obtained at 1.4 mL/min at breakthrough time of 5.15 h influent POME concentration. The experimental data were fitted to Thomas, Adams–Bohart, and Yoon–Nelson models fixed bed adsorption models. It was revealed that the results fitted well to the Adams Bohart model with a correlation coefficient of R2 > 0.96 at different influent concentration. Adsorption rate constant was observed to increase at lower flow rate influent concentration, resulting in longer empty bed contact time (EBCT) for the mass transfer zone of the column to reach the outlet of the effluent concentration. In general, the overall kinetics of adsorption indicated that the reduction in COD from POME using a bone-biocomposite was effective at the initial stage of adsorption. The pore diffusion model better described the breakthrough characteristics for COD reduction with high correlation coefficient. Shorter breakthrough time compared to EBCT before regeneration indicated that the bone composite was suitable and effective for the reduction in COD from POME using fixed bed column adsorption.

Biogas from Palm Oil Mill Effluent: Characterization and Removal of CO2 using Modified Clinoptilolite Zeolites in a Fixed-Bed Column

2016 ◽  
Vol 7 (4) ◽  
pp. 625 ◽  
Author(s):  
Eny Kusrini ◽  
Maya Lukita ◽  
Misri Gozan ◽  
Bambang Heru Susanto ◽  
Teguh Wikan Widodo ◽  
...  
Keyword(s):  
Palm Oil ◽  
Fixed Bed ◽  
Palm Oil Mill Effluent ◽  
Fixed Bed Column ◽  
Palm Oil Mill ◽  
Modified Clinoptilolite

Continuous Heavy Metal Removal from Palm Oil Mill Effluent Using Natural Ceiba pentandra Packed-Bed Column

2014 ◽  
Vol 625 ◽  
pp. 822-825 ◽  
Author(s):  
Muhammad Afzaal ◽  
Balasubramanian Periyasamy ◽  
Mohd Azmuddin Abdullah
Keyword(s):  
Heavy Metal ◽  
Flow Rate ◽  
Palm Oil ◽  
Packing Density ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Packed Bed ◽  
Palm Oil Mill Effluent ◽  
Packed Bed Column ◽  
Palm Oil Mill

Packed bed column studies were carried out to evaluate the performance of naturalCeiba pentandra(L). Gaertn. (kapok) for the heavy metal removal from Palm Oil Mill Effluent (POME) under varying flow rate (5-10 ml/min) and packing density (0.04-0.08 g/cm3). A multilevel factorial design based on Packing density and flow rate of the influent was developed. Maximum metal reductions for Fe, Mn and Zn were 2.06 ppm, 0.081 ppm, and 0.064 ppm respectively obtained at 0.08 g/cm3packing density and 5 ml/min flow rate. The results suggest the suitability of raw kapok fiber for low-cost removal of heavy metals.

Adsorption of chloro-anilines from solution by modified peanut husk in fixed-bed column

2013 ◽  
Vol 68 (10) ◽  
pp. 2158-2163 ◽  
Author(s):  
Shenglong Zhang ◽  
Randi Zhang ◽  
Wei Xiao ◽  
Runping Han
Keyword(s):  
Flow Rate ◽  
Low Cost ◽  
Fixed Bed ◽  
Breakthrough Curves ◽  
Ammonium Bromide ◽  
Spectroscopy Analysis ◽  
Time Model ◽  
Fixed Bed Column ◽  
Column Adsorption ◽  
Critical Bed Depth

Natural peanut husk (NPH) modified with hexadecyl trimethyl ammonium bromide (CTAB) was used as adsorbent to remove 2,5-dimethoxy-4-chloroaniline (DMCH) from solution in a fixed-bed column. Fourier transform infrared spectroscopy analysis and X-ray fluorescence of NPH and modified peanut husk (MPH) showed that CTAB had been introduced onto the surface of NPH. The effects of flow rate and bed depth on breakthrough curves were studied. The Thomas model and the Yan model were selected to fit the column adsorption data and the results showed that the Yan model was better at predicting the breakthrough curves. The adsorption quantity was up to 6.46 mg/g according to the Yan model. The bed depth service time model was used to calculate the critical bed depth from experimental data and it was directly related to flow rate. As a low-cost adsorbent, MPH is promising for the removal of DMCH from solution.

Fixed Bed Column Filled with Rice Husk for the Removal of Cu (II) from Aqueous Solution

2010 ◽  
Vol 658 ◽  
pp. 53-56
Author(s):  
Zai Fang Deng ◽  
Xue Gang Luo ◽  
Xiao Yan Lin
Keyword(s):  
Aqueous Solution ◽  
Rice Husk ◽  
Flow Rate ◽  
Low Cost ◽  
Fixed Bed ◽  
Design Parameters ◽  
Breakthrough Time ◽  
Fixed Bed Column ◽  
Initial Concentration ◽  
Column Design

The performance of low-cost adsorbent such as rice husk fixed bed column in removing copper from aqueous solution were studied in this work. Different column design parameters like bed height, flow rate and initial concentration were calculated. It was found that at 10 mg/L concentration of Cu (Ⅱ) and at flow rate 5 mL/min with different bed depths such as 9, 12 and 15 cm, the breakthrough time increases from 150 to 260 min; the breakthrough time increases from 125 to 780 min with decreasing of flow rate from 15 to 5 mL/min and decreased from 260 to 50 min when initial concentration increased from 7 to 50 mg/L.

Continuous fixed bed adsorption of Cu(II) by halloysite nanotube–alginate hybrid beads: an experimental and modelling study

2014 ◽  
Vol 70 (2) ◽  
pp. 192-199 ◽  
Author(s):  
Yanyan Wang ◽  
Xiang Zhang ◽  
Qiuru Wang ◽  
Bing Zhang ◽  
Jindun Liu
Keyword(s):  
Adsorption Capacity ◽  
Flow Rate ◽  
Fixed Bed ◽  
Halloysite Nanotubes ◽  
Fixed Bed Column ◽  
Factors Affecting ◽  
Bed Height ◽  
Column Adsorption ◽  
Fixed Bed Adsorption ◽  
Adsorption Desorption

We used natural resources of halloysite nanotubes and alginate to prepare a novel porous adsorption material of organic–inorganic hybrid beads. The adsorption behaviour of Cu(II) onto the hybrid beads was examined by a continuous fixed bed column adsorption experiment. Meanwhile, the factors affecting the adsorption capacity such as bed height, influent concentration and flow rate were investigated. The adsorption capacity (Q0) reached 74.13 mg/g when the initial inlet concentration was 100 mg/L with a bed height of 12 cm and flow rate of 3 ml/min. The Thomas model and bed-depth service time fitted well with the experimental data. In the regeneration experiment, the hybrid beads retained high adsorption capacity after three adsorption–desorption cycles. Over the whole study, the new hybrid beads showed excellent adsorption and regeneration properties as well as favourable stability.

scholarly journals Pengolahan Palm Oil Mill Effluent (POME) menjadi Biogas dengan Sistem Anaerobik Tipe Fixed Bed tanpa Proses Netralisasi

2019 ◽  
Vol 20 (1) ◽  
pp. 143 ◽  
Author(s):  
Widiatmini Sih Winanti ◽  
Prasetiyadi Prasetiyadi ◽  
Wiharja Wiharja
Keyword(s):  
Palm Oil ◽  
Waste Treatment ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Palm Oil Mill Effluent ◽  
Operating Costs ◽  
Methane Gas ◽  
Palm Oil Mill ◽  
Two Stages ◽  
Anaerobic System

ABSTRACTPalm Oil Mill wastewater or POME is currently not fully utilized. POME waste treatment generally uses covered lagoon technology using the anaerobic system, which generally operates well in neutral waste conditions with a pH of 7 and uses mesophilic processes at temperatures around 35oC. So it is necessary to cool down and neutralize before POME is fed to the reactor, by mixing it with POME which has been degraded inside the reactor, where the pH condition has to turn into a base. It is useful to ensure that the POME temperature before being fed into the reactor is near the ambient temperature and the acidity of POME is near neutral (pH = 7). POME treatment using a covered lagoon reactor usually need 30 days residence time. The Fixed Bed anaerobic reactor is capable to treat waste with a low pH waste, so POME which has a pH of 4 does not need to be neutralized before treating using Fixed Bed Reactor. This will simplify the processing process, reduce investment costs and operating costs. The purpose of this research is to process POME waste using an anaerobic type Fixed Bed reactor without neutralization stage. The method processing using Fixed Bed type reactor is divided into two stages of a process that is bacteria inoculation process and POME waste adaptation process. The results of the research can reduce the HRT to 2o days, with optimal POME feeding at 150 liters/day. The percentage of methane gas measured was 66%. The methane gas yield is 0.52 liters/gram of COD or greater than the results of using the covered lagoon, which is 0.35 liters/ gram COD.Key word: Palm Oil Mill Effluent (POME), anaerobic, Fixed Bed, biogas, neutralizationABSTRAKLimbah cair industri minyak kelapa sawit atau POME saat ini belum dimanfaatkan secara maksimal. Pengolahan limbah POME umumnya menggunakan teknologi covered lagoon dengan sistem anaerobik, dimana umumnya teknologi ini beroperasi baik pada kondisi limbah yang netral dengan pH 7 dan menggunakan proses mesopilik pada suhu sekitar 35oC.  Sehingga diperlukan tahap pendinginan dan tahap netralisasi terlebih dahulu sebelum POME diumpankan ke reaktor, yaitu dengan mencampurkannya dengan POME yang sudah terdegradasi di dalam reaktor, karena sifatnya  sudah berubah menjadi basa. Hal ini berguna untuk memastikan bahwa suhu POME sebelum masuk reaktor sudah mendekati suhu lingkungan dan tingkat keasaman POME sudah mendekati netral (pH =7). Pengolahan POME menggunakan covered lagoon umumnya memerlukan waktu tinggal di dalam reaktor(HRT) sekitar 30 hari. Reaktor anaerobik tipe Fixed Bed mampu mengolah limbah dengan pH rendah, sehingga POME yang mempunyai pH 4, tidak perlu dinetralkan terlebih dahulu. Hal ini akan menyederhanakan proses pengolahan, menurunkan biaya investasi dan biaya operasi. Tujuan penelitian ini adalah mengolah limbah POME dengan menggunakan reaktor anaerobik tipe Fixed Bed tanpa tahap proses netralisasi. Metode pengolahan anaerobik dengan menggunakan reaktor tipe Fixed Bed, terbagi menjadi dua tahapan proses yaitu proses inokulasi bakteri dan proses adaptasi limbah POME. Hasil penelitian dapat menurunkan HRT menjadi 20 hari, dengan pengumpanan POME optimal pada 150 liter/hari. Persentase gas metana adalah 66%. Hasil produksi gas metana adalah 0,52 liter/gram COD atau lebih besar dari hasil proses menggunakan covered lagoon, yaitu 0,35 liter/ gram COD.Kata Kunci: Palm Oil Mill Effluent (POME), anaerobik, Fixed Bed, biogas, netralisasi

scholarly journals Volcanic Rock Materials for Defluoridation of Water in Fixed-Bed Column Systems

Molecules ◽  
2021 ◽  
Vol 26 (4) ◽  
pp. 977 ◽  
Author(s):  
Wondwosen Sime Geleta ◽  
Esayas Alemayehu ◽  
Bernd Lennartz
Keyword(s):  
Flow Rate ◽  
Volcanic Rocks ◽  
Fixed Bed ◽  
Water Volume ◽  
Fluoride Removal ◽  
High Concentration ◽  
Solution Ph ◽  
Fixed Bed Column ◽  
Column Adsorption ◽  
Defluoridation Of Water

Consumption of drinking water with a high concentration of fluoride (>1.5 mg/L) causes detrimental health problems and is a challenging issue in various regions around the globe. In this study, a continuous fixed-bed column adsorption system was employed for defluoridation of water using volcanic rocks, virgin pumice (VPum) and virgin scoria (VSco), as adsorbents. The XRD, SEM, FTIR, BET, XRF, ICP-OES, and pH Point of Zero Charges (pHPZC) analysis were performed for both adsorbents to elucidate the adsorption mechanisms and the suitability for fluoride removal. The effects of particle size of adsorbents, solution pH, and flow rate on the adsorption performance of the column were assessed at room temperature, constant initial concentration, and bed depth. The maximum removal capacity of 110 mg/kg for VPum and 22 mg/kg for VSco were achieved at particle sizes of 0.075–0.425 mm and <0.075 mm, respectively, at a low solution pH (2.00) and flow rate (1.25 mL/min). The fluoride breakthrough occurred late and the treated water volume was higher at a low pH and flow rate for both adsorbents. The Thomas and Adams–Bohart models were utilized and fitted well with the experimental kinetic data and the entire breakthrough curves for both adsorbents. Overall, the results revealed that the developed column is effective in handling water containing excess fluoride. Additional testing of the adsorbents including regeneration options is, however, required to confirm that the defluoridation of groundwater employing volcanic rocks is a safe and sustainable method.

Experimental Study of Breakthrough Adsorption on Activated Carbon for CO2 Capture

2011 ◽  
Vol 356-360 ◽  
pp. 1139-1144
Author(s):  
Qi Gang Cen ◽  
Meng Xiang Fang ◽  
Jia Ping Xu ◽  
Zhong Yang Luo
Keyword(s):  
Activated Carbon ◽  
Adsorption Capacity ◽  
Flow Rate ◽  
Flue Gas ◽  
Fixed Bed ◽  
Column Efficiency ◽  
Breakthrough Time ◽  
Fixed Bed Column ◽  
Temperature Changes ◽  
Adsorbent Capacity

In this study, a commercial activated carbon was assessed as adsorbent for post-combustion CO2 capture. The breakthrough adsorption experiments were conducted in a fixed-bed column with simulated flue gas of 12% CO2. The effects of feed flow rate and adsorption pressure on breakthrough time and CO2 adsorption capacity were evaluated. The column efficiency was introduced to estimate the percentage of the utilization of the bed adsorbent capacity. At a higher flow rate, the breakthrough time, breakthrough capacity and column efficiency decreased. Conversely, increasing adsorption pressure was favorable to CO2 adsorption by the increase in breakthrough time, CO2 adsorption capacity and the column efficiency. During the experiments, temperature changes were detected at three positions inside the column to track the movement of breakthrough front.

scholarly journals Photocatalytic Degradation of Palm Oil Mill Effluent (POME) Waste Using BiVO4 Based Catalysts

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6225
Author(s):  
Wibawa Hendra Saputera ◽  
Aryan Fathoni Amri ◽  
Rino R. Mukti ◽  
Veinardi Suendo ◽  
Hary Devianto ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Photocatalytic Degradation ◽  
Calcination Temperature ◽  
Palm Oil ◽  
Diffuse Reflectance Spectroscopy ◽  
Organic Pollutant ◽  
Design Guidelines ◽  
Palm Oil Mill Effluent ◽  
K Value ◽  
Palm Oil Mill

Disposal of palm oil mill effluent (POME), which is highly polluting from the palm oil industry, needs to be handled properly to minimize the harmful impact on the surrounding environment. Photocatalytic technology is one of the advanced technologies that can be developed due to its low operating costs, as well as being sustainable, renewable, and environmentally friendly. This paper reports on the photocatalytic degradation of palm oil mill effluent (POME) using a BiVO4 photocatalyst under UV-visible light irradiation. BiVO4 photocatalysts were synthesized via sol-gel method and their physical and chemical properties were characterized using several characterization tools including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), surface area analysis using the BET method, Raman spectroscopy, electron paramagnetic resonance (EPR), and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of calcination temperature on the properties and photocatalytic performance for POME degradation using BiVO4 photocatalyst was also studied. XRD characterization data show a phase transformation of BiVO4 from tetragonal to monoclinic phase at a temperature of 450 °C (BV-450). The defect site comprising of vanadium vacancy (Vv) was generated through calcination under air and maxima at the BV-450 sample and proposed as the origin of the highest reaction rate constant (k) of photocatalytic POME removal among various calcination temperature treatments with a k value of 1.04 × 10−3 min−1. These findings provide design guidelines to develop efficient BiVO4-based photocatalyst through defect engineering for potential scalable photocatalytic organic pollutant degradation.

scholarly journals ADSORPTION OF HEAVY METALS AND RESIDUAL OIL FROM PALM OIL MILL EFFLUENT USING NOVEL ADSORBENT OF ALGINATE AND MANGROVE COMPOSITE BEADS COATED BY CHITOSAN IN A PACKED BED COLUMN

2018 ◽  
Vol 19 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Rana Jaafar Jawad ◽  
Mohd Halim Shah Ismail ◽  
Shamsul Izhar Siajam
Keyword(s):  
Heavy Metals ◽  
Palm Oil ◽  
Breakthrough Curve ◽  
Fixed Bed ◽  
Packed Bed ◽  
Palm Oil Mill Effluent ◽  
Residual Oil ◽  
Continuous Adsorption ◽  
Composite Beads ◽  
Palm Oil Mill

In this study, a novel adsorbent was prepared, namely alginate and mangrove composite beads coated with chitosan (AMCBCC), and performed well to remove heavy metals and residual oil from palm oil mill effluent (POME) using continuous adsorption studies in a fixed bed column under different bed heights. Thomas and Yoon–Nelson models were applied to predict the breakthrough curve and to compute the characteristic parameters such as maximum capacity and the time required for 50% of adsorbate breakthrough. It was found that the total removal percentage of iron ions, zinc ions, and residual oil were 26.75%, 76.74%, and 83% respectively at pH 3, and a bed height 27 cm. Both models can well describe the breakthrough curve of heavy metals and residual oil. These results indicated that AMCBCC can be used to remove heavy metals and residual oil from industrial wastewater. ABSTRAK: Kajian ini menyediakan tentang penjerap baharu iaitu alginat dan manik komposit bakau bersalut kitosan (AMCBCC), berfungsi menyingkirkan logam berat dan sisa minyak daripada efluen kilang minyak sawit (POME) dengan sempurna, menggunakan kajian penjerapan berterusan dalam lapisan lajur tetap pada ketinggian berbeza. Model Thomas dan Yoon-Nelson telah digunakan bagi meramal lengkungan terbaik dan mengira parameter cirian seperti keupayaan maksimum dan tempoh diperlukan bagi 50% lengkungan terbaik penjerap. Jumlah peratusan penyingkiran ion besi, ion zink, dan sisa minyak masing-masing sebanyak 26.75%, 76.74%, dan  83% pada pH 3, dan pada ketinggian lapisan 27 cm. Kedua-dua model mampu menggambarkan lengkungan terbaik bagi logam berat dan sisa minyak dengan sempurna. Dapatan ini menunjukkan AMCBCC sesuai digunakan bagi menyingkirkan logam berat dan sisa minyak daripada air sisa industri.

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