Desalination and Water Treatment最新文献_第10页

IF 1.1 4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29583

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Coupling nutrient removal and biodiesel production by cultivation of Chlorella sp. in cafeteria wastewater: assessment of the effect of wastewater disinfection 小球藻培养在食堂废水中耦合去除营养物和生产生物柴油:废水消毒效果评价

IF 1.1 4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29477

Haitao Li, Xiaowen Li, L. Cui, Md. Asraful Alam, Wei Lu

{"title":"Coupling nutrient removal and biodiesel production by cultivation of Chlorella sp. in cafeteria wastewater: assessment of the effect of wastewater disinfection","authors":"Haitao Li, Xiaowen Li, L. Cui, Md. Asraful Alam, Wei Lu","doi":"10.5004/dwt.2023.29477","DOIUrl":"https://doi.org/10.5004/dwt.2023.29477","url":null,"abstract":"Cultivation of microalgae using wastewater as nutrient resource is a promising strategy to reduce the microalgae biodiesel production cost and increase nutrient recovery in one step. However, the inhibitive effect of indigenous bacteria on microalgae could negatively affect microalgal growth. Thus, in this study, the effect of wastewater disinfection methods on the growth and biochemical composition of Chlorella sp. and the nutrient removal efficiency in cafeteria wastewater was eval- uated. Results showed a significant increase in the microalgal density and a reduction in bacterial abundance in the disinfected wastewater. Moreover, chemical oxygen demand removal ranging from 83.53%–87.16% was achieved in 15-d incubation and complete removal of total nitrogen and total phosphorus was achieved after 6 d of incubation. The total carbohydrate, protein and fatty acid contents in the harvested biomass were 128.49–139.33, 43.24–56.14 and 17.34–23.58 mg·g –1 on dry weight basis, respectively. Palmitic acid, palmitoleic acid, stearic acid and oleic acid accounted for more than 90% of the total fatty acids in the biomass, indicating great potential as an alternative feedstock for biodiesel production. This study provides a simple and efficient disinfection strategy to enhance Chlorella sp. growth and biomass production for biodiesel production.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"3 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88436976","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}

引用次数: 0

Sorption of Bisphenol A from aqueous solutions by acid activated bentonite clay 酸活化膨润土对水溶液中双酚A的吸附

IF 1.1 4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29295

Nouhaila Hadoudi, Asmae Charki, Hossain El Ouarghi, A. Salhi, H. Amhamdi, M. Ahari

引用次数: 1

Synthesis and characterization of iron-doped titania nanoparticles for the removal of DPP-IV inhibitor from the aqueous samples 用于去除水中DPP-IV抑制剂的铁掺杂二氧化钛纳米颗粒的合成和表征

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29664

Muhammad Irfan Jalees, Yousara Rauf, Arfa Iqbal,, Nayab Zahara, Emre Cevik

引用次数: 0

Assessment of wave energy resources in the Pearl River estuary of China 珠江口波浪能资源评价

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29691

Zuchao Ye, Xin Ma, Na Yang, Liwei Cui

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Treatment of water contaminated by cadmium using low-cost and eco-friendly alginate/Moroccan clay composite beads 利用低成本、环保的海藻酸盐/摩洛哥粘土复合微珠处理镉污染水

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29656

Younes Rachdi, Marouane El Alouani, Rajaa Bassam, El Hassane Mourid, Hamid Saufi, El Hassan El Khattabi, Fadoua El Makhoukhi, El Hassane Khouya, Said Belaaouad

{"title":"Treatment of water contaminated by cadmium using low-cost and eco-friendly alginate/Moroccan clay composite beads","authors":"Younes Rachdi, Marouane El Alouani, Rajaa Bassam, El Hassane Mourid, Hamid Saufi, El Hassan El Khattabi, Fadoua El Makhoukhi, El Hassane Khouya, Said Belaaouad","doi":"10.5004/dwt.2023.29656","DOIUrl":"https://doi.org/10.5004/dwt.2023.29656","url":null,"abstract":"This study aims to investigate the batch mode adsorption of Cd(II) from an aqueous solution using two adsorbents: raw clay without any treatment (NC) and clay composite beads (CCB). The adsorbents before and after adsorption were characterized using several techniques such as X-ray fluorescence, X-ray diffraction, Fourier-transform infrared, scanning electron microscopy, energy-dispersive X-ray, thermogravimetric analysis, differential thermal analysis and zeta potential. The influence of the experimental parameters of adsorption such as mass, pH, concentration, contact time, and temperature were studied to optimize them. The results of the kinetic study suggest that the adsorption of Cd(II) by NC and CCB can be explained by the pseudo-second-order kinetic model. The time after which the adsorption reaction does not evolve was 120 min for both adsor-bents. The Langmuir isotherm model was found to be the most adequate for Cd(II) adsorption, with maximum adsorption capacities of 42.97 and 100.8 mg·g –1 for NC and CCB, respectively. The thermodynamic parameters indicated that the adsorption mechanism of Cd(II) on the surface of NC and CCB was endothermic, spontaneous, and favorable with a random distribution of Cd(II) ions at the solid/liquid interface. The regeneration study showed that NC and CCB are recyclable with. These findings suggest that NC and CCB could be used as effective and environmentally friendly adsorbents for treating heavy metal contamination in effluents.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135496532","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}

引用次数: 0

A comprehensive numerical investigation of the performance of solar stills with various designs 不同设计太阳能蒸馏器性能的综合数值研究

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29704

Vo Long Hai, Nguyen Duc Nam, Nguyen Minh Phu

引用次数: 0

Sustainable approaches for dye removal using enzymatic hydrolysis residue of corncob as an adsorbent 以玉米芯酶解渣为吸附剂的染料可持续脱除方法

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29716

Guilong Yan, Yuzhen Zhou, Xinyi Zhao, Jianguo Wu, Ci Jin, Liqin Zhao, Wei Wang, Ying Chen, Xiaoya Yao

{"title":"Sustainable approaches for dye removal using enzymatic hydrolysis residue of corncob as an adsorbent","authors":"Guilong Yan, Yuzhen Zhou, Xinyi Zhao, Jianguo Wu, Ci Jin, Liqin Zhao, Wei Wang, Ying Chen, Xiaoya Yao","doi":"10.5004/dwt.2023.29716","DOIUrl":"https://doi.org/10.5004/dwt.2023.29716","url":null,"abstract":"In this study, the potential of enzymatic hydrolysis residue of corncob (EHRC), an intrinsic byproduct of biorefinery, as dye adsorbent was surveyed. The chemical and structural analysis indicated that EHRC and raw corncob had numerous active functional groups and a large, rough adsorption surface. These properties, more prominent in EHRC, underlined the material’s efficiency in dye adsorption. EHRC and raw corncob were more favorable for the adsorption of methylene blue (MB) than methyl orange. The adsorption capacities of both EHRC and raw corncob increased with increasing initial dye concentration, and adsorption occurred rapidly. The adsorption capacity of EHRC did not change much when the solution pH was greater than the pH at point zero charge (pH PZC , 3.78). The process modelling demonstrated that adsorption of MB onto EHRC well fitted by the pseudo-second-order and Langmuir isotherm models. The adsorption was a spontaneous exothermic reaction based on thermodynamic analysis. These results showed that EHRC could be used as an efficient and cheap adsorbent.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134884121","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}

引用次数: 0

Synthesis of graphene oxide–magnesium oxide composites and cationic dyes removal from water 氧化石墨烯-氧化镁复合材料的合成及水中阳离子染料的脱除

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29728

Narges Behzad, Omid Moradi, Heydar Raissi, Mohammad Hakimi, Shahla Mozaffari

{"title":"Synthesis of graphene oxide–magnesium oxide composites and cationic dyes removal from water","authors":"Narges Behzad, Omid Moradi, Heydar Raissi, Mohammad Hakimi, Shahla Mozaffari","doi":"10.5004/dwt.2023.29728","DOIUrl":"https://doi.org/10.5004/dwt.2023.29728","url":null,"abstract":"Herein, graphene oxide (GO)–magnesium oxide (MgO) nanocomposites (GO-MgO) (GO1.5MgO, GO3MgO, GO4.5MgO, and GO6MgO) were synthesized and characterized. Methylene blue (MB) and crystal violet (CV) as cationic dyes were used as contaminants. The results showed that MB and CV adsorption followed pseudo-second-order kinetics. The isotherm data indicated that MB and CV removal obeyed the Langmuir isotherm model. It means that the adsorption process was carried out in specific homogeneous sites on the adsorbent surface. The adsorption thermodynamic data presented that the negative Δ G of CV and MB removal by the synthesized adsorbents presented physical and spontaneous adsorption. Also, the positive values of Δ H and Δ S showed the endothermic properties of adsorption and the increase of dye irregularity on the adsorbent surface. The amount of dye adsorbed on the synthesized adsorbents increases by increasing the contaminant concentration. The results indicated that contaminant adsorption capacity enhances by enhancing the adsor-bent dose and then decreases to some extent. As the adsorbent dose increases, the active sites will be more accessible. The adsorbent particles are agglomerated at values higher than the optimal value of the adsorbent dose. Thus dye removal is reduced. It can be concluded that the synthesized GO-MgO nanocomposites could be used as alternative adsorbents to remove cationic dyes.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134884733","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}

引用次数: 0

Drugs used in COVID-19 therapy and their effects on the environment COVID-19治疗中使用的药物及其对环境的影响

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29574

Humam Ahmed, Ewa Felis

{"title":"Drugs used in COVID-19 therapy and their effects on the environment","authors":"Humam Ahmed, Ewa Felis","doi":"10.5004/dwt.2023.29574","DOIUrl":"https://doi.org/10.5004/dwt.2023.29574","url":null,"abstract":"The SARS-CoV-2 virus responsible for causing the COVID-19 disease was first identified in Wuhan in December 2019. Due to its easy transmission from person to person, it has become a global health threat, causing a pandemic that was declared by the WHO in March 2020. The therapeutic strategy for its treatment was based on commercially available drugs that were dedicated to the treatment of other diseases (e.g., votive fever, bacterial infections, other viral diseases). Currently, three antiviral drugs are approved as official drugs in COVID-19 therapy, however, other drugs are still being used to support the treatment of this disease, depending on the intensity of its symptoms. The need to treat patients infected with SARS-CoV-2 results in an increased demand for drugs supporting the treatment of COVID-19, and thus their greater consumption. Consequently, this group of drugs is very often released into the environment mainly through treated sewage. And as is observed with other micropollutants, drugs used to treat COVID-19, along with metabolites, will certainly become a new group of anthropogenic micropollutants in the environment, posing a potential threat to living organisms. Therefore, the aim of the study is a literature review on the occurrence of drugs used to treat COVID-19 in the environment and to estimate the potential threat resulting from this pres - ence. The work will focus mainly on antiviral, antiparasitic and antimalarial drugs used in COVID-19 treatment. From the point of view of human health, the real problem with drugs used to treat COVID-19 is the potential formation of resistant strains of microorganisms through chronic expo - sure of organisms to drugs used in COVID-19 therapies. This phenomenon is analogous to the phe - nomenon of drug resistance to antibiotics in various microorganisms, including pathogenic ones.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135447658","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}

引用次数: 0