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

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

Analysis of the effect of sandy soil amendment with biochar on its physical and chemical properties and the quantity and quality of biomass yield of energy crops 生物炭改良剂对沙土理化性质及能源作物生物量产量质量的影响分析

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29494

Ewa Stańczyk-Mazanek

{"title":"Analysis of the effect of sandy soil amendment with biochar on its physical and chemical properties and the quantity and quality of biomass yield of energy crops","authors":"Ewa Stańczyk-Mazanek","doi":"10.5004/dwt.2023.29494","DOIUrl":"https://doi.org/10.5004/dwt.2023.29494","url":null,"abstract":"This study attempted to analyze the effect of biochar fertilization with the biomass of Virginia fan-petals ( Sida hermaphrodita ) on selected physical and chemical properties of sandy soil. The biomass yield of three energy crop species grown on such fertilized soil was evaluated. The content of heavy metals accumulated in the biomass of selected energy crops and the soil after crop cultivation was also determined. The examinations were carried out under conditions of the lysimeter experiment (natural conditions). Sandy soil was used for fertilization, with biochar doses of 0.5%, 1%, 1.5%, and 2% (by weight). The control material was non-fertilized soil. The study was carried out for 3 y. After each growing season, selected soil properties, the volume of biomass obtained, and the bioaccumulation of heavy metals were analyzed. Fertilization of the sandy soils with biochar caused a significant increase in the yield of all three energy crops studied, including Sida hermaphrodita . Of all the species cultivated, this plant responded best to biochar amendment. An optimum dose of this fertilizer was 1.5%, which, in the first year of cultivation, caused an increase in yield by 21.1% compared to control plants. The study showed that the use of biochar as a fertilizer did not cause an increase in contamination of the sandy soils with heavy metals. The application of biochar to sandy soil with all doses resulted in an improvement of selected sorption properties including a statistically significant increase in pH (active acidity), a decrease in hydrolytic acidity (potential acidity), an increase in the content of phosphorus, nitrogen, total carbon, and organic matter.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"1 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":"135447660","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

Sequential algorithm of building the regression-classification model for total nitrogen simulation: application of machine learning 构建全氮模拟回归分类模型的序贯算法:机器学习的应用

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29715

Krzysztof Barbusiński, Bartosz Szeląg, Anita Białek, Ewa Łazuka, Emilia Popławska, Joanna Szulżyk-Cieplak, Roman Babko, Grzegorz Łagód

{"title":"Sequential algorithm of building the regression-classification model for total nitrogen simulation: application of machine learning","authors":"Krzysztof Barbusiński, Bartosz Szeląg, Anita Białek, Ewa Łazuka, Emilia Popławska, Joanna Szulżyk-Cieplak, Roman Babko, Grzegorz Łagód","doi":"10.5004/dwt.2023.29715","DOIUrl":"https://doi.org/10.5004/dwt.2023.29715","url":null,"abstract":"a b s t r a c t Total nitrogen (TN) concentration is one of important indications of wastewater quality and also a parameter important for wastewater treatment plant performance evaluation. Since the variability of total nitrogen in the effluent from the wastewater treatment plant is the result of the processes taking place in the bioreactor, the processes can be described by mechanistic models, for exam - ple, activated sludge models. However, calibration of many parameters is required in such models, and can leads to problems in identifying their proper numerical values. The paper proposes a novel way to deal with this problem by presenting a methodology for building a model for simulating TN, based on sequential structure. In the applied approach, regression models for simulation of TN are first created using Extreme Gradient Boosting (XGBoost), and random forest (RF) methods. In the case of unsatisfactory predictive ability, a division of the dependent variable into a classifier form is made. In the next stage, classification models are created by RF and XGBoost methods and sensitivity analysis is performed by calculating Shapley indices. Two classification models were built that allow for the identification of TN eff variability ranges. The new approach using two models instead of one is preferable because it allows control and optimization of the bioreactor operation.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"142 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":"135447679","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

Adsorption of SO42- on Li2CO3 crystal surfaces: experiments and first-principles calculation SO42-在Li2CO3晶体表面的吸附:实验和第一性原理计算

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29698

Xin Liu, Yanfang Ma, Yongming Zhang, Xiuping Ding, Zhihong Zhan

{"title":"Adsorption of SO42- on Li2CO3 crystal surfaces: experiments and first-principles calculation","authors":"Xin Liu, Yanfang Ma, Yongming Zhang, Xiuping Ding, Zhihong Zhan","doi":"10.5004/dwt.2023.29698","DOIUrl":"https://doi.org/10.5004/dwt.2023.29698","url":null,"abstract":"Salt lake brine is an important raw material for Li 2 CO 3 preparation, however, the composition of salt lake brine is relatively complicated, and the coexistence of impurity ions affects the quality of Li 2 CO 3 crystals. Especially, SO 42– in brine can compete with CO 32– to form ion pairs, which limits the nucleation of carbonate. Therefore, it is necessary to study the adsorption behavior of SO 42– in brine on the surface of Li 2 CO 3 crystals. In this paper, the effect of SO 42– on Li 2 CO 3 crystals under different SO 42– /Li + ratios is studied by combining experiments and first-principles calculation. The results show that in the Li 2 CO 3 crystallization system, SO 42– interacts strongly with the crys - tal surface, which is regarded as chemical adsorption. And because of the SO 42– is a soluble anion, its elution rate is about 50%. The adsorption of SO 42– on the surface of Li 2 CO 3 affects the morphol - ogy, particle size, and purity of the crystals. The governing equation is constructed by the change of the crystal specific surface area with the SO 42– /Li + ratio, which can effectively predict the crystal size and specific surface area with SO 42– content. The first-principles calculation reveals the microscopic behavior of SO 42– adsorption on the crystal surface from the molecular level that there is charge transfer between the O atoms of SO 42– and the Li atoms on the crystal surface, and there is a strong interaction between them.","PeriodicalId":11260,"journal":{"name":"Desalination and Water Treatment","volume":"62 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":"135496758","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

Preparation of lignosulfonate-based polycatecholamine composite membrane for efficient separation 木质素磺酸基多儿茶酚胺高效分离复合膜的制备

4区工程技术

Desalination and Water Treatment Pub Date : 2023-01-01 DOI: 10.5004/dwt.2023.29662

Ruoyao Zhou, Yanxin Song, Tingting Gao, Yue Wu, Qinze Liu, Jinshui Yao, Changbin Zhang

{"title":"Preparation of lignosulfonate-based polycatecholamine composite membrane for efficient separation","authors":"Ruoyao Zhou, Yanxin Song, Tingting Gao, Yue Wu, Qinze Liu, Jinshui Yao, Changbin Zhang","doi":"10.5004/dwt.2023.29662","DOIUrl":"https://doi.org/10.5004/dwt.2023.29662","url":null,"abstract":"Effective, safe, and rapid treatment of dye-contaminated wastewater is a challenging task at the global scale. In this study, lignosulfonate-based polycatecholamine and polyethersulfone composite (PES-PCA-LS) membrane was prepared by depositing aminated sodium lignosulfonate (LS) and catechol on polyethersulfone (PES) membrane. This membrane was characterized by various techniques and its performance was investigated using Congo red (CR) as the probe molecule. The results showed that the retention rate of CR solution by PES-PCA-LS membrane was above 99.5%. At this removal rate, one square meter of membrane could treat 351 L of CR waste solution (CR, 100 ppm; salt, 5,000 ppm). However, the retention rates of NaCl, Na 2 SO 4 , and K 2 SO 4 were found to be only 2.8%, 3.5%, and 0.9%, respectively. Besides, this membrane could target selective removal of CR from the mixed solution (CR/Rhodamine B). This PES-PCA-LS membrane also showed excellent cycling performance, with the removal rate maintained at about 97% at the tenth cycle. Thus, this study provides new ideas for the application of industrial lignin in the field of membrane separation for dye/salt or dye/dye mixed solutions.","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":"135496759","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