Carbon dioxide (CO2) release from the burning of fossil fuels such as oil, coal and natural gas are contributing to the increase in the greenhouse gas (GHG) levels in the atmosphere. Most countries and scientific research communities are endeavoring to solve the climate change issue due to global warming by reducing GHG emissions. At present, most of the researches are focusing on decreasing the dependency on fossil fuels and replacing them with renewable energy. Nevertheless, this transition still faced major obstacles such as require new infrastructure, technology and market failures. To solve this problem, three CO2 emission reduction strategies can be used, namely CO2 capture and storage (CCS), CO2 utilisation and CO2 conversion. Among these potential approaches, the utilisation and conversion of CO2 are preferable since it converts harmful gas into valuable products. Moreover, conversion of CO2 is a key element for sustainable development towards the low-carbon economy. Furthermore, the application of carbon dioxide conversion technologies involves CO2 capture and reprocess would able to stabilise the atmospheric GHG levels and make a good prospect to transform CO2 into value-added products. A recent advance in electrochemical CO2 conversion has opened an existing possibility of utilisation of CO2 as useful for fuel generation and produce a valuable commodity chemical. This short review highlights the current development related to an electrochemical conversion of CO2 between 2014 and 2018. In addition, this review discusses recent technologies and approaches through electrochemical reduction using electrocatalyst and biocatalyst. This review also aims in providing the research community with current research in this electrochemical field also inspiring new ideas in the CO2 electrochemical conversion technology.
{"title":"Recent development in the electrochemical conversion of carbon dioxide: Short review","authors":"F. Hussin, M. Aroua","doi":"10.1063/1.5117139","DOIUrl":"https://doi.org/10.1063/1.5117139","url":null,"abstract":"Carbon dioxide (CO2) release from the burning of fossil fuels such as oil, coal and natural gas are contributing to the increase in the greenhouse gas (GHG) levels in the atmosphere. Most countries and scientific research communities are endeavoring to solve the climate change issue due to global warming by reducing GHG emissions. At present, most of the researches are focusing on decreasing the dependency on fossil fuels and replacing them with renewable energy. Nevertheless, this transition still faced major obstacles such as require new infrastructure, technology and market failures. To solve this problem, three CO2 emission reduction strategies can be used, namely CO2 capture and storage (CCS), CO2 utilisation and CO2 conversion. Among these potential approaches, the utilisation and conversion of CO2 are preferable since it converts harmful gas into valuable products. Moreover, conversion of CO2 is a key element for sustainable development towards the low-carbon economy. Furthermore, the application of carbon dioxide conversion technologies involves CO2 capture and reprocess would able to stabilise the atmospheric GHG levels and make a good prospect to transform CO2 into value-added products. A recent advance in electrochemical CO2 conversion has opened an existing possibility of utilisation of CO2 as useful for fuel generation and produce a valuable commodity chemical. This short review highlights the current development related to an electrochemical conversion of CO2 between 2014 and 2018. In addition, this review discusses recent technologies and approaches through electrochemical reduction using electrocatalyst and biocatalyst. This review also aims in providing the research community with current research in this electrochemical field also inspiring new ideas in the CO2 electrochemical conversion technology.","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83998764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Kusumastuti, Gunawan Muhammad Najibulloh, N. Qudus, S. Anis
Study on the application of Taylor-Couette column for emulsion liquid membrane system has been done. To optimise extraction process under TCC, a research to investigate effect of volume ratio of oil to water is of important. Fluid viscosity was examined by varying volume ratio of kerosene to water. TCC was characterised to determine flow regimes, shear stress, and energy loss distribution. Volume ratio of oil to water was varied at 1:1, 1:3, 1:5, and 1:6 while inner and outer cylinders speed were maintained constant at 31.4 and 0 rad/s, respectively. Investigation on the effect of volume ratio of oil to water towards flow regime ended to same flow regime of Turbulence Taylor Vortices (TTV). There was degradation of wall shear stress from 8.57x10−2 Pa to 7.42x10−2 Pa.Study on the application of Taylor-Couette column for emulsion liquid membrane system has been done. To optimise extraction process under TCC, a research to investigate effect of volume ratio of oil to water is of important. Fluid viscosity was examined by varying volume ratio of kerosene to water. TCC was characterised to determine flow regimes, shear stress, and energy loss distribution. Volume ratio of oil to water was varied at 1:1, 1:3, 1:5, and 1:6 while inner and outer cylinders speed were maintained constant at 31.4 and 0 rad/s, respectively. Investigation on the effect of volume ratio of oil to water towards flow regime ended to same flow regime of Turbulence Taylor Vortices (TTV). There was degradation of wall shear stress from 8.57x10−2 Pa to 7.42x10−2 Pa.
{"title":"Flow regime analysis of Taylor-Couette column for emulsion liquid membrane applications","authors":"A. Kusumastuti, Gunawan Muhammad Najibulloh, N. Qudus, S. Anis","doi":"10.1063/1.5117107","DOIUrl":"https://doi.org/10.1063/1.5117107","url":null,"abstract":"Study on the application of Taylor-Couette column for emulsion liquid membrane system has been done. To optimise extraction process under TCC, a research to investigate effect of volume ratio of oil to water is of important. Fluid viscosity was examined by varying volume ratio of kerosene to water. TCC was characterised to determine flow regimes, shear stress, and energy loss distribution. Volume ratio of oil to water was varied at 1:1, 1:3, 1:5, and 1:6 while inner and outer cylinders speed were maintained constant at 31.4 and 0 rad/s, respectively. Investigation on the effect of volume ratio of oil to water towards flow regime ended to same flow regime of Turbulence Taylor Vortices (TTV). There was degradation of wall shear stress from 8.57x10−2 Pa to 7.42x10−2 Pa.Study on the application of Taylor-Couette column for emulsion liquid membrane system has been done. To optimise extraction process under TCC, a research to investigate effect of volume ratio of oil to water is of important. Fluid viscosity was examined by varying volume ratio of kerosene to water. TCC was characterised to determine flow regimes, shear stress, and energy loss distribution. Volume ratio of oil to water was varied at 1:1, 1:3, 1:5, and 1:6 while inner and outer cylinders speed were maintained constant at 31.4 and 0 rad/s, respectively. Investigation on the effect of volume ratio of oil to water towards flow regime ended to same flow regime of Turbulence Taylor Vortices (TTV). There was degradation of wall shear stress from 8.57x10−2 Pa to 7.42x10−2 Pa.","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85374820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Kiyasudeen, F. N. Gonawan, M. Ibrahim, S. A. Ismail, S. A. Muhammad
Several researchers have modeled animal’s guts as reactors, although not many discuss earthworm specifically. The present study applies plug flow reactor (PFR) based enzyme deactivation kinetic model by using three deactivation rates (β), i.e., 0.05, 0.1 and 0.15 to predict the changes in proteolytic activity, profile of crude protein and amino acids at five distinct sections, i.e., pre-intestine, foregut, midgut A, midgut B, and Hindgut along the gut of the earthworm Eudrilus eugeniae. At three rates of deactivation, three different range of reduction in proteolytic activity was predicted, i.e., (i) 52.28% decrease when β-value was set at 0.05, (ii) 77.23% decrease when β-value was set at 0.1, and (iii) 93.03% decrease when β-value was set at 0.15. In the case of crude protein, the concentration decreased along the gut for all the three β-values at the level of 31.21%, 49.28% and 66.90%, when β value was set at 0.05, 0.1 and 0.15 respectively. The effect of deactivation on amino acids also revealed a pattern steady decrease, i.e., 93.83%, 96.85% and 98.87% decrease when β was set at 0.05, 0.1 and 0.15.Several researchers have modeled animal’s guts as reactors, although not many discuss earthworm specifically. The present study applies plug flow reactor (PFR) based enzyme deactivation kinetic model by using three deactivation rates (β), i.e., 0.05, 0.1 and 0.15 to predict the changes in proteolytic activity, profile of crude protein and amino acids at five distinct sections, i.e., pre-intestine, foregut, midgut A, midgut B, and Hindgut along the gut of the earthworm Eudrilus eugeniae. At three rates of deactivation, three different range of reduction in proteolytic activity was predicted, i.e., (i) 52.28% decrease when β-value was set at 0.05, (ii) 77.23% decrease when β-value was set at 0.1, and (iii) 93.03% decrease when β-value was set at 0.15. In the case of crude protein, the concentration decreased along the gut for all the three β-values at the level of 31.21%, 49.28% and 66.90%, when β value was set at 0.05, 0.1 and 0.15 respectively. The effect of deactivation on amino acids also revealed a pat...
{"title":"Earthworms as plug flow reactors: An enzyme deactivation kinetic study along the gut of the earthworm Eudrilus eugeniae","authors":"K. Kiyasudeen, F. N. Gonawan, M. Ibrahim, S. A. Ismail, S. A. Muhammad","doi":"10.1063/1.5117070","DOIUrl":"https://doi.org/10.1063/1.5117070","url":null,"abstract":"Several researchers have modeled animal’s guts as reactors, although not many discuss earthworm specifically. The present study applies plug flow reactor (PFR) based enzyme deactivation kinetic model by using three deactivation rates (β), i.e., 0.05, 0.1 and 0.15 to predict the changes in proteolytic activity, profile of crude protein and amino acids at five distinct sections, i.e., pre-intestine, foregut, midgut A, midgut B, and Hindgut along the gut of the earthworm Eudrilus eugeniae. At three rates of deactivation, three different range of reduction in proteolytic activity was predicted, i.e., (i) 52.28% decrease when β-value was set at 0.05, (ii) 77.23% decrease when β-value was set at 0.1, and (iii) 93.03% decrease when β-value was set at 0.15. In the case of crude protein, the concentration decreased along the gut for all the three β-values at the level of 31.21%, 49.28% and 66.90%, when β value was set at 0.05, 0.1 and 0.15 respectively. The effect of deactivation on amino acids also revealed a pattern steady decrease, i.e., 93.83%, 96.85% and 98.87% decrease when β was set at 0.05, 0.1 and 0.15.Several researchers have modeled animal’s guts as reactors, although not many discuss earthworm specifically. The present study applies plug flow reactor (PFR) based enzyme deactivation kinetic model by using three deactivation rates (β), i.e., 0.05, 0.1 and 0.15 to predict the changes in proteolytic activity, profile of crude protein and amino acids at five distinct sections, i.e., pre-intestine, foregut, midgut A, midgut B, and Hindgut along the gut of the earthworm Eudrilus eugeniae. At three rates of deactivation, three different range of reduction in proteolytic activity was predicted, i.e., (i) 52.28% decrease when β-value was set at 0.05, (ii) 77.23% decrease when β-value was set at 0.1, and (iii) 93.03% decrease when β-value was set at 0.15. In the case of crude protein, the concentration decreased along the gut for all the three β-values at the level of 31.21%, 49.28% and 66.90%, when β value was set at 0.05, 0.1 and 0.15 respectively. The effect of deactivation on amino acids also revealed a pat...","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89851836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper provides with a first assessment on the sustainability of Pressure Swing Adsorption (PSA) as a valid option for Carbon Dioxide (CO2) capture in power plant. PSA is a well-established gas...
{"title":"Optimizing purity and recovery of hydrogen from syngas by equalized pressure swing adsorption using palm kernel shell activated carbon adsorbent","authors":"I. Idris, A. Abdullah, I. Shamsudin, M. Othman","doi":"10.1063/1.5117119","DOIUrl":"https://doi.org/10.1063/1.5117119","url":null,"abstract":"This paper provides with a first assessment on the sustainability of Pressure Swing Adsorption (PSA) as a valid option for Carbon Dioxide (CO2) capture in power plant. PSA is a well-established gas...","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90947120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A highly effective and reusable immobilized unilayer thin coating of bentonite and photocatalyst was fabricated on the glass beaker to remove aqueous methylene blue solution. It was observed that t...
{"title":"Fabrication and optimization of immobilized bentonite and TiO2 photocatalyst in unilayer and bilayer system for the photocatalytic adsorptive removal of methylene blue dye under UV light","authors":"M. Mahmood, S. Ismail","doi":"10.1063/1.5117099","DOIUrl":"https://doi.org/10.1063/1.5117099","url":null,"abstract":"A highly effective and reusable immobilized unilayer thin coating of bentonite and photocatalyst was fabricated on the glass beaker to remove aqueous methylene blue solution. It was observed that t...","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73741724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ionic liquids have attracted many researches in bioactive compound separation as well as carbon capture. This is due to the ability of ionic liquid to be designed based on specific needs and produc...
{"title":"Optimization of ionic liquid-based microwave extraction of flavonoid and phenolic acid from Labisia Pumila","authors":"N. A. Rahman, Ani Idris, N. Yunus, A. Mustaffa","doi":"10.1063/1.5117087","DOIUrl":"https://doi.org/10.1063/1.5117087","url":null,"abstract":"Ionic liquids have attracted many researches in bioactive compound separation as well as carbon capture. This is due to the ability of ionic liquid to be designed based on specific needs and produc...","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83711180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. M. Nor, S. A. Hamid, M. S. Shamsudin, S. Ismail
Quercetin is a plant pigment from flavonoid group found in many plants and foods such as onions, green tea, apples and berries and can be taken as health supplements to support heart issues and prevent cancer due to the function of antioxidant and anti-inflammatory effects. Basically, quercetin can be easily separated from water sources when it is operated with nanofiltration (NF) and reverse osmosis (RO) mode since the pore size of membrane is very small. However, these processes generally require high operating pressure during treatment process, resulting in significant energy consumption. Thus, an adsorptive membrane is fabricated with microfiltration (MF) range combining polyacrylonitrile (PAN) and nanosilica as the adsorbent to adsorb quercetin on the membrane with lower pressure in the operation. This paper is focused on modification of PAN/Nanosilica adsorptive membrane with chitosan to improve the performance flux and quercetin adsorption varying two membrane modification methods which are chitosan coating and chitosan blending. The adsorptive membrane fabricated using PAN/Nanosilica modified by chitosan coating is found as the best membrane for quercetin filtration compared to PAN/Nanosilica membrane modified by chitosan blending because higher initial flux for pure water and quercetin were achieved and flux reduction for quercetin using PAN/Nanosilica/Chitosan coated membrane is the lowest which is 57.5%.
{"title":"Effect of chitosan modification on PAN/nanosilica adsorptive membrane for quercetin filtration","authors":"N. M. Nor, S. A. Hamid, M. S. Shamsudin, S. Ismail","doi":"10.1063/1.5117083","DOIUrl":"https://doi.org/10.1063/1.5117083","url":null,"abstract":"Quercetin is a plant pigment from flavonoid group found in many plants and foods such as onions, green tea, apples and berries and can be taken as health supplements to support heart issues and prevent cancer due to the function of antioxidant and anti-inflammatory effects. Basically, quercetin can be easily separated from water sources when it is operated with nanofiltration (NF) and reverse osmosis (RO) mode since the pore size of membrane is very small. However, these processes generally require high operating pressure during treatment process, resulting in significant energy consumption. Thus, an adsorptive membrane is fabricated with microfiltration (MF) range combining polyacrylonitrile (PAN) and nanosilica as the adsorbent to adsorb quercetin on the membrane with lower pressure in the operation. This paper is focused on modification of PAN/Nanosilica adsorptive membrane with chitosan to improve the performance flux and quercetin adsorption varying two membrane modification methods which are chitosan coating and chitosan blending. The adsorptive membrane fabricated using PAN/Nanosilica modified by chitosan coating is found as the best membrane for quercetin filtration compared to PAN/Nanosilica membrane modified by chitosan blending because higher initial flux for pure water and quercetin were achieved and flux reduction for quercetin using PAN/Nanosilica/Chitosan coated membrane is the lowest which is 57.5%.","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90726532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Abd-Aziz, S. Alias, N. M. Bashar, A. Amir, S. Abdul-Talib, C. C. Tay
This paper reviews on the performance of different plastic waste as value-added adsorbent under different environmental pollution. As adsorbent, it should tender the uppermost rates of pollutant removal, cost-effective and easy to obtain. The first part of this paper discussed on the concept of adsorption process. Since adsorbents assortment is the key for adsorption study, the adsorption of dissimilar types of pollutants by different kind of plastic waste as an adsorbent are then reviewed in the following part. The use of different plastic waste of various types includes plastic carrier bag, coffee cup, plastic container and food packaging which are made from polystyrene, polypropylene, polyethylene terephthalate, high-density polyethylene, polyvinyl chloride and low-density polyethylene are highlighted in this paper. The advantageous of each plastic waste as adsorbent are discussed. It was found that they possess most excellent performance on the potential adsorption of pollutants in various environmental pollutants. It is believed that using of plastic waste not only provides a novel potential way to utilize waste plastics, but also put forward a facile sustainable approach in remediating environment pollution.This paper reviews on the performance of different plastic waste as value-added adsorbent under different environmental pollution. As adsorbent, it should tender the uppermost rates of pollutant removal, cost-effective and easy to obtain. The first part of this paper discussed on the concept of adsorption process. Since adsorbents assortment is the key for adsorption study, the adsorption of dissimilar types of pollutants by different kind of plastic waste as an adsorbent are then reviewed in the following part. The use of different plastic waste of various types includes plastic carrier bag, coffee cup, plastic container and food packaging which are made from polystyrene, polypropylene, polyethylene terephthalate, high-density polyethylene, polyvinyl chloride and low-density polyethylene are highlighted in this paper. The advantageous of each plastic waste as adsorbent are discussed. It was found that they possess most excellent performance on the potential adsorption of pollutants in various environment...
{"title":"A short review: Potential use of plastic waste as adsorbent for various pollutants","authors":"N. Abd-Aziz, S. Alias, N. M. Bashar, A. Amir, S. Abdul-Talib, C. C. Tay","doi":"10.1063/1.5117094","DOIUrl":"https://doi.org/10.1063/1.5117094","url":null,"abstract":"This paper reviews on the performance of different plastic waste as value-added adsorbent under different environmental pollution. As adsorbent, it should tender the uppermost rates of pollutant removal, cost-effective and easy to obtain. The first part of this paper discussed on the concept of adsorption process. Since adsorbents assortment is the key for adsorption study, the adsorption of dissimilar types of pollutants by different kind of plastic waste as an adsorbent are then reviewed in the following part. The use of different plastic waste of various types includes plastic carrier bag, coffee cup, plastic container and food packaging which are made from polystyrene, polypropylene, polyethylene terephthalate, high-density polyethylene, polyvinyl chloride and low-density polyethylene are highlighted in this paper. The advantageous of each plastic waste as adsorbent are discussed. It was found that they possess most excellent performance on the potential adsorption of pollutants in various environmental pollutants. It is believed that using of plastic waste not only provides a novel potential way to utilize waste plastics, but also put forward a facile sustainable approach in remediating environment pollution.This paper reviews on the performance of different plastic waste as value-added adsorbent under different environmental pollution. As adsorbent, it should tender the uppermost rates of pollutant removal, cost-effective and easy to obtain. The first part of this paper discussed on the concept of adsorption process. Since adsorbents assortment is the key for adsorption study, the adsorption of dissimilar types of pollutants by different kind of plastic waste as an adsorbent are then reviewed in the following part. The use of different plastic waste of various types includes plastic carrier bag, coffee cup, plastic container and food packaging which are made from polystyrene, polypropylene, polyethylene terephthalate, high-density polyethylene, polyvinyl chloride and low-density polyethylene are highlighted in this paper. The advantageous of each plastic waste as adsorbent are discussed. It was found that they possess most excellent performance on the potential adsorption of pollutants in various environment...","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86816000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tay Huat Hua, A. C. Affam, W. C. Chung, Wong Chee Swee, J. Adebayo
{"title":"Activation of persulphate by heat, pH, and transition metals for removal of COD and colour from biologically treated palm oil mill effluent","authors":"Tay Huat Hua, A. C. Affam, W. C. Chung, Wong Chee Swee, J. Adebayo","doi":"10.1063/1.5117067","DOIUrl":"https://doi.org/10.1063/1.5117067","url":null,"abstract":"","PeriodicalId":6836,"journal":{"name":"6TH INTERNATIONAL CONFERENCE ON ENVIRONMENT (ICENV2018): Empowering Environment and Sustainable Engineering Nexus Through Green Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86248816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Saafie, Mohamad Fakhrul Ridhwan Samsudin, S. Sufian, R. Ramli
The removal of contaminated dyes in wastewater via Activated Carbon (AC) technology is a promising alternative to current conventional pollution-free technologies. Herein, the commercial AC with enhanced adsorption performance capacity were comprehensively investigated via modulating with the alkali-acid treatment. The removal of a highly concentrated methylene blue solution was evaluated via a commercial AC treated with deionized water (AC-DI), potassium hydroxide (AC-KOH) and nitric acid (AC-HNO3). The physicochemical properties of the modified AC were characterized using Fourier Transform Infra-Red (FTIR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Surface area analyzer and Porosity analysis (SAP). The AC modified with deionized water (AC-DI) exhibited superior adsorption performance with 99% of methylene blue removal within 8 hours. Gratifyingly, the AC-DI has the fastest adsorption uptake within 2 hours in comparison to AC, AC-KOH and AC-HNO3 samples. The superior methylene blue removal performance of AC-DI was attributed to the enhanced surface group functionalization over the surface of AC evidenced from the FTIR analysis. In addition, the better crystallinity of AC-DI sample as shown in XRD and FESEM micrograph analysis does help to improve the adsorption of contaminated dye molecules onto the surface complex of AC, results in a superior rate of methylene blue removal. These results suggest that the alkali-acid treatment shows promises in enhancing the adsorption rate capabilities of commercial AC for the removal of basic dyes from wastewater.The removal of contaminated dyes in wastewater via Activated Carbon (AC) technology is a promising alternative to current conventional pollution-free technologies. Herein, the commercial AC with enhanced adsorption performance capacity were comprehensively investigated via modulating with the alkali-acid treatment. The removal of a highly concentrated methylene blue solution was evaluated via a commercial AC treated with deionized water (AC-DI), potassium hydroxide (AC-KOH) and nitric acid (AC-HNO3). The physicochemical properties of the modified AC were characterized using Fourier Transform Infra-Red (FTIR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Surface area analyzer and Porosity analysis (SAP). The AC modified with deionized water (AC-DI) exhibited superior adsorption performance with 99% of methylene blue removal within 8 hours. Gratifyingly, the AC-DI has the fastest adsorption uptake within 2 hours in comparison to AC, AC-KOH and AC-HNO3 samples. The superio...
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