Colour removal from effluents remains one of the most challenging requirements faced by indus - tries due to the difficulty of degrading dyes which consequently escape conventional wastewater treatment processes and persist in the environment. This study aimed to assess and optimise the dye adsorption performance of banana floret, a novel biosorbent. Batch experiments were con - ducted to assess the effects of particle size, pH, agitation, temperature, initial concentration and sorbent dose. Kinetic and equilibrium data were modelled, and mass transfer studies were con - ducted to elucidate the mechanisms of biosorption. Equilibrium data were best simulated using the Sips and Langmuir isotherm models. At an optimum pH of 6.0, biosorbent dose of 1.0 mg·L –1 and temperature of 300 K, a maximum sorption capacity of 219 mg·g –1 was observed. The kinetic data were best represented by the pseudo-second-order model. The dominant transport mechanism was attributed to intraparticle diffusion, while the dominant attachment mechanism was phys - ical sorption. The Taguchi method, in combination with analysis of variance, was used to deter - mine the optimum levels of operational parameters for maximising the biosorption of methylene blue by banana floret. The parameter group which produced the highest biosorption capacity and percent removal was determined to be A3-B1-C3 (initial concentration = 200 mg·L –1 , biosorbent dose = 500 mg·L –1 , contact time = 60 min) and A1-B3-C3 (initial concentration = 50 mg·L –1 , biosor - bent dose = 2000 mg·L –1 , contact time = 20 min), respectively. Among these parameters, the initial concentration had the most significant effect on the biosorption capacity, while sorbent dose was most significant on percent removal. A predictive model based on a quadratic equation which incorporates the factor interactions was successfully developed and validated.
{"title":"Biosorption of methylene blue dye using banana floret:: kinetic, equilibrium, thermodynamic and mass transfer studies","authors":"Clint Sutherland, Beverly Chittoo, Vikash Laltoo","doi":"10.5004/dwt.2023.29348","DOIUrl":"https://doi.org/10.5004/dwt.2023.29348","url":null,"abstract":"Colour removal from effluents remains one of the most challenging requirements faced by indus - tries due to the difficulty of degrading dyes which consequently escape conventional wastewater treatment processes and persist in the environment. This study aimed to assess and optimise the dye adsorption performance of banana floret, a novel biosorbent. Batch experiments were con - ducted to assess the effects of particle size, pH, agitation, temperature, initial concentration and sorbent dose. Kinetic and equilibrium data were modelled, and mass transfer studies were con - ducted to elucidate the mechanisms of biosorption. Equilibrium data were best simulated using the Sips and Langmuir isotherm models. At an optimum pH of 6.0, biosorbent dose of 1.0 mg·L –1 and temperature of 300 K, a maximum sorption capacity of 219 mg·g –1 was observed. The kinetic data were best represented by the pseudo-second-order model. The dominant transport mechanism was attributed to intraparticle diffusion, while the dominant attachment mechanism was phys - ical sorption. The Taguchi method, in combination with analysis of variance, was used to deter - mine the optimum levels of operational parameters for maximising the biosorption of methylene blue by banana floret. The parameter group which produced the highest biosorption capacity and percent removal was determined to be A3-B1-C3 (initial concentration = 200 mg·L –1 , biosorbent dose = 500 mg·L –1 , contact time = 60 min) and A1-B3-C3 (initial concentration = 50 mg·L –1 , biosor - bent dose = 2000 mg·L –1 , contact time = 20 min), respectively. Among these parameters, the initial concentration had the most significant effect on the biosorption capacity, while sorbent dose was most significant on percent removal. A predictive model based on a quadratic equation which incorporates the factor interactions was successfully developed and validated.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"43 7-12 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77488967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Efficient removal of polyethylene and polyvinyl chloride microplastics from water using a modified coagulation process supported by the addition of a surfactant","authors":"Sabina Ziembowicz, M. Kida, P. Koszelnik","doi":"10.5004/dwt.2023.29398","DOIUrl":"https://doi.org/10.5004/dwt.2023.29398","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"818 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77542656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yinghua Li, Shijie Zhang, Jie-feng Qian, F. Su, Haibo Li
{"title":"How membrane fouling evolves during electrodialysis treatment of cold-rolling wastewater?","authors":"Yinghua Li, Shijie Zhang, Jie-feng Qian, F. Su, Haibo Li","doi":"10.5004/dwt.2023.29273","DOIUrl":"https://doi.org/10.5004/dwt.2023.29273","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"140 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77688818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Zhang, Hongyun Dong, Xinhua Li, P. Lens, Nan Wang, Hongyuan Liu, Yanjun Wang, Ying Li
{"title":"Effects of copper and zinc on pollutants removal in horizontal subsurface flow constructed wetlands","authors":"Yan Zhang, Hongyun Dong, Xinhua Li, P. Lens, Nan Wang, Hongyuan Liu, Yanjun Wang, Ying Li","doi":"10.5004/dwt.2023.29220","DOIUrl":"https://doi.org/10.5004/dwt.2023.29220","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"51 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75147970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdelmnim M. Altwaiq, Leen Ali, M. Esaifan, R. Abdel-Rahem
{"title":"Variation of total dissolved solids, conductivity and surface tensions of selected solutions under magnetic treatment","authors":"Abdelmnim M. Altwaiq, Leen Ali, M. Esaifan, R. Abdel-Rahem","doi":"10.5004/dwt.2023.29327","DOIUrl":"https://doi.org/10.5004/dwt.2023.29327","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"13 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75223989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Citric acid-pyrolysis synthesis of bismuth titanate series compounds and their photocatalytic degradation","authors":"Yuhai Mo, B. Tuo, Jianli Wang, G. Nie, Yun Tang","doi":"10.5004/dwt.2023.29532","DOIUrl":"https://doi.org/10.5004/dwt.2023.29532","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"25 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76079321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Al-Rawajfeh, Ebtehal Alzalabieh, Ghada A. Al Bazedi, G. Al-Mazaideh, M. Shalayel
The harmful algal bloom (red tides) (HAB) phenomenon is an issue for desalination facilities. This paper reviews the causes and impacts of HABs on desalination plants. Some HABs are linked to the creation of natural pollutants, dissolved oxygen depletion, and other negative consequences. Because desalination facilities are the principal source of freshwater for communities, agriculture, and industry for middle eastern arid nations, the disruption of plant operations by red tide poses a danger to the availability of drinkable water and can constitute an extraordinary HABs impact. Desalination plants are responsible for pollutants added to the Gulf seawater via outfall systems. Consequently, desalination projects must undergo an environmental impact assessment (EIA), considering accepted environmental characteristics and criteria. EIA assesses the potential effects on air, land, and sea water qualities, techniques to mitigate their impact.
{"title":"A review on harmful algae blooms in Arabian Gulf: causes and impacts on desalination plants","authors":"A. Al-Rawajfeh, Ebtehal Alzalabieh, Ghada A. Al Bazedi, G. Al-Mazaideh, M. Shalayel","doi":"10.5004/dwt.2023.29482","DOIUrl":"https://doi.org/10.5004/dwt.2023.29482","url":null,"abstract":"The harmful algal bloom (red tides) (HAB) phenomenon is an issue for desalination facilities. This paper reviews the causes and impacts of HABs on desalination plants. Some HABs are linked to the creation of natural pollutants, dissolved oxygen depletion, and other negative consequences. Because desalination facilities are the principal source of freshwater for communities, agriculture, and industry for middle eastern arid nations, the disruption of plant operations by red tide poses a danger to the availability of drinkable water and can constitute an extraordinary HABs impact. Desalination plants are responsible for pollutants added to the Gulf seawater via outfall systems. Consequently, desalination projects must undergo an environmental impact assessment (EIA), considering accepted environmental characteristics and criteria. EIA assesses the potential effects on air, land, and sea water qualities, techniques to mitigate their impact.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"30 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85338903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this article, copper complex [Cu(biba) 2 ]·H 2 O (biba = 2-(1H-benzoimidazol-2-yl)benzoic acid) was synthesized via hydrothermal method, and structurally characterized by single-crystal X-ray diffraction, powder X-ray diffraction, UV-Vis diffuse reflectance spectra, Raman spectra and Fourier-transform infrared spectroscopy. [Cu(biba) 2 ]·H 2 O exhibited good photocatalytic activities in degradation of methylene blue (MB) dye and sulfadiazine (SD) antibiotic under visible light with added H 2 O 2 . The degradation efficiency of MB was up to 93.1% after reacting for 80 min, and the degradation efficiency of SD was over 96.8% after reacting for 60 min. The degradation kinetics of MB and SD under [Cu(biba) 2 ]·H 2 O/H 2 O 2 catalytic system was studied, and the observed first-order kinetics rate constants ( k ) were 0.0340 and 0.0573 min –1 , respectively. Based on the experimental results, a reasonable mechanism was proposed to interpret the photo-Fenton oxidation process.
{"title":"Facile synthesis of Cu-complex for visible-light photodegradation of organic dyes and sulfonamide antibiotics with added H2O2","authors":"Dawei Wang, Xue-bin Ji, Zhengjun Shi","doi":"10.5004/dwt.2023.29506","DOIUrl":"https://doi.org/10.5004/dwt.2023.29506","url":null,"abstract":"In this article, copper complex [Cu(biba) 2 ]·H 2 O (biba = 2-(1H-benzoimidazol-2-yl)benzoic acid) was synthesized via hydrothermal method, and structurally characterized by single-crystal X-ray diffraction, powder X-ray diffraction, UV-Vis diffuse reflectance spectra, Raman spectra and Fourier-transform infrared spectroscopy. [Cu(biba) 2 ]·H 2 O exhibited good photocatalytic activities in degradation of methylene blue (MB) dye and sulfadiazine (SD) antibiotic under visible light with added H 2 O 2 . The degradation efficiency of MB was up to 93.1% after reacting for 80 min, and the degradation efficiency of SD was over 96.8% after reacting for 60 min. The degradation kinetics of MB and SD under [Cu(biba) 2 ]·H 2 O/H 2 O 2 catalytic system was studied, and the observed first-order kinetics rate constants ( k ) were 0.0340 and 0.0573 min –1 , respectively. Based on the experimental results, a reasonable mechanism was proposed to interpret the photo-Fenton oxidation process.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"40 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85395215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Persulfates to degrade a mixture of dyes (rhodamine B, methylene blue) in the presence of glucose and visible light","authors":"P. Zawadzki","doi":"10.5004/dwt.2023.29288","DOIUrl":"https://doi.org/10.5004/dwt.2023.29288","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"14 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81752075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Electrochemical properties of Ti/Sb/SnO2-SiO2 anode for electrocatalytic oxidation of Acid Red 18","authors":"Yanfang Song, Jiaman Liu, Jiping Jia, Honghua Ge, Xinjing Meng, Yuzeng Zhao","doi":"10.5004/dwt.2023.29222","DOIUrl":"https://doi.org/10.5004/dwt.2023.29222","url":null,"abstract":"","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82245359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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