Journal of Environmental Treatment Techniques最新文献

The Treatment of Wastewater Containing Pharmaceuticals 含药物废水的处理

Journal of Environmental Treatment Techniques Pub Date : 2021-02-06 DOI: 10.47277/jett/9(2)504

引用次数: 5

Use of Aluminium Metal Embedded ThujaOccidentalis Leaves Carbon (AMETLC) for Fluoride Removal from Water: Equilibrium and Kinetic Studies 铝包埋西竹叶碳(AMETLC)用于水中除氟:平衡和动力学研究

Journal of Environmental Treatment Techniques Pub Date : 2021-01-28 DOI: 10.47277/JETT/9(2)490

Dhilleswararao Vaddi, Venkata Subba Rao Mushini, Phani Surya Murali Krishna Mudumba

{"title":"Use of Aluminium Metal Embedded ThujaOccidentalis Leaves Carbon (AMETLC) for Fluoride Removal from Water: Equilibrium and Kinetic Studies","authors":"Dhilleswararao Vaddi, Venkata Subba Rao Mushini, Phani Surya Murali Krishna Mudumba","doi":"10.47277/JETT/9(2)490","DOIUrl":"https://doi.org/10.47277/JETT/9(2)490","url":null,"abstract":"In this research work, Aluminum metal embedded Thuja Occidentalis leaves carbon (AMETLC) is used an adsorbent for the removal of fluoride from water. On batch technique, under key factors like pH, the dosage of adsorbent, variation of fluoride concentration and contact time, 92% of fluoride removal is observed at room temperature under optimum experimental conditions with an adsorbent particle size of <75 µm. The impact of existing negative ions on percentage removal of fluoride is studied, and it is noticed in the direction of PO43- > HCO3-> SO42- > NO3- > Cl-. The adsorbent is characterized by using FTIR, SEM, EDX, and XRD techniques. Experimental data reveal that the Langmuir isotherm model(maximum adsorption capacity obtained is 0.625 mg g-1) provided the best correlation (R2 = 0.988) and is well fit followed by pseudo-second-order kinetic model represents mono-layered, and chemisorptions are the rate-determining step for fluoride adsorption. Thermodynamic studies reveals better adsorption is attained at lower temperatures. The standard free energy (ΔH0) is observed as negative and the negative value of standard free energy (ΔH0) represents that the adsorption process is exothermic. Moreover, desorption study reveals that fluoride leaching takes place at a pH 13.0. In addition, succinct cost estimation was done for the AMETLC which offered one of the best alternatives for the removal of fluoride. The application of AMETLC is helpful to decrease the fluoride concentration in groundwater samples to meet the permissible limit according to BIS-2012 standards.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125968796","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}

引用次数: 3

Application of Electrocoagulation for the Removal of Color from Institutional Wastewater: Analysis with Response Surface Methodology 电絮凝技术在工业废水脱色中的应用:响应面法分析

Journal of Environmental Treatment Techniques Pub Date : 2021-01-25 DOI: 10.47277/jett/9(2)479

{"title":"Application of Electrocoagulation for the Removal of Color from Institutional Wastewater: Analysis with Response Surface Methodology","authors":"","doi":"10.47277/jett/9(2)479","DOIUrl":"https://doi.org/10.47277/jett/9(2)479","url":null,"abstract":"The removal percentage of color from institutional wastewater was studied using an electrocoagulation process with different electrode combination at the anode and cathode. This was done by considering operational parameters such as pH at (3, 6 and 9), current at (0.03A, 0.06A and 0.09A) and reaction time at (20, 40 and 60 minutes). When electrode combined in the form of Al-Al (anode-Cathode/Cathode-Anode) and Fe-Fe (anode-Cathode/Cathode-Anode) the percentage removal of color was up to 95.50% and 97.24% respectively. On the other hand around 98.03% and 91.95% of color was removed when Al-Fe (Anode-Cathode) and Fe-Al (Anode-Cathode) combined at pH 9 and 60 minutes of reaction time respectively. Central composite design from response surface methodology was used up to analysis the statistical and mathematical data based on experimental results such as the model was significant for all electrode combinations. Similarly a quadratic model was used for further study of operational effects on the removal (%) of color from institutional wastewater. The value of coefficient of the determination (R2) also indicated the model was a good fit as well as optimization was done by Response Surface Methodology.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122869167","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}

引用次数: 3

Conformal Hamiltonian Mechanical Equations on Contact 9- Manifolds 接触流形上的共形哈密顿力学方程

Journal of Environmental Treatment Techniques Pub Date : 2021-01-05 DOI: 10.47277/jett/9(2)415

引用次数: 0

Debt Settlement Through the Client of the Existence of Limited Partnership Business Entity as a Non-Legal Business Agency in Indonesia 通过有限合伙企业实体作为印度尼西亚非合法商业机构存在的客户进行债务结算

Journal of Environmental Treatment Techniques Pub Date : 2021-01-05 DOI: 10.47277/jett/9(2)420

{"title":"Debt Settlement Through the Client of the Existence of Limited Partnership Business Entity as a Non-Legal Business Agency in Indonesia","authors":"","doi":"10.47277/jett/9(2)420","DOIUrl":"https://doi.org/10.47277/jett/9(2)420","url":null,"abstract":"A limited partnership or CV is a non-legal entity that is widely used in running a company which can be declared bankrupt. This paper aims to investigate further regarding the consequences of the end of bankruptcy on the existence of CV as a non-legal entity company where there is no separation of assets between CV and its partners. The research method used is juridical normative, using secondary data consisting of primary legal materials and secondary legal materials, analyzed descriptively analytically. The results of the study reveal that in CV bankruptcy, CV, complementary and limited partners, as for the bankruptcy board, are CV's assets, allies 'original assets and allies' original assets if bound in marriage without a marriage agreement, and joint assets. CV can operate again if the bankruptcy ends in peace or insolvency followed by a grant of rehabilitation. It is based on the current procedure that bankruptcy against the debtor can end because of peace or insolvency which further entitles the debtor to rehabilitation through a process that does not regulate how long the process is and the requirements for a bankruptcy declaration can result in a solvent company being declared bankrupt resulting in general confiscation of the debtor's and debtor's assets no longer operational, it is very detrimental to the debtor. On the other hand, the existence of general confiscation of the debtor's assets which becomes a guarantee for the repayment of the creditors' receivables requires certainty about who can be requested to be declared bankrupt.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130007351","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}

引用次数: 0

Chromium and cadmium removal from synthetic wastewater by Electrocoagulation process 电絮凝法去除合成废水中的铬和镉

Journal of Environmental Treatment Techniques Pub Date : 2020-12-26 DOI: 10.47277/jett/9(2)382

Hesham M. Elkaramany, A. Elbaz, R. Wagdy, Islam S. Mohammed

{"title":"Chromium and cadmium removal from synthetic wastewater by Electrocoagulation process","authors":"Hesham M. Elkaramany, A. Elbaz, R. Wagdy, Islam S. Mohammed","doi":"10.47277/jett/9(2)382","DOIUrl":"https://doi.org/10.47277/jett/9(2)382","url":null,"abstract":"Electrocoagulation (EC) is one of the efficient electrochemical approaches for industrial wastewater treatment. The present work aims to reach optimum conditions for achieving simultaneous removal of chromium and cadmium ions from synthetic wastewater by EC through assessment of different parameters like electrodes material, electrode configuration, initial pH, current density, initial temperature, and initial contaminate concentration. In addition, a comparison between chemical coagulation and EC efficiency for Chromium and cadmium removal was presented. Results showed that the (Fe-Al), an anode and cathode, achieved better removal efficiency than other electrodes configurations (Fe-Fe / Al-Fe / Al- Al). Also, the increase of initial temperature and current density enhanced the removal efficiency. In contrast, the increase in the initial concentration reduced the removal efficiency. The complete removal of Chromium achieved through the use of Fe-Al electrodes and current density was 12.50 mA/cm2 with solution pH of 5.8, temperature was 25oC and an initial concentration of 280 mg/L. On the other hand, Cadmium’s complete removal was achieved through the use of Fe-Allectrodes, at pH of 5.8, applied current 1.4 A and 60oC. Therefore, EC was proved to be better approach than conventional coagulation in case of treatment of wastewater containing different types of heavy metals ions with high initial concentrations.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125881409","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}

引用次数: 3

Mg-Cr Layered Double Hydroxide Intercalated Oxalic Anion to Remove Cationic Dye Solutions: Rhodamine B and Methylene Blue Mg-Cr层状双氢氧化物插层草酸阴离子去除阳离子染料溶液:罗丹明B和亚甲基蓝

Journal of Environmental Treatment Techniques Pub Date : 2020-12-26 DOI: 10.47277//JETT/9(2)390

A. Badri, N. Palapa, R. Mohadi, M. Mardiyanto, A. Lesbani

{"title":"Mg-Cr Layered Double Hydroxide Intercalated Oxalic Anion to Remove Cationic Dye Solutions: Rhodamine B and Methylene Blue","authors":"A. Badri, N. Palapa, R. Mohadi, M. Mardiyanto, A. Lesbani","doi":"10.47277//JETT/9(2)390","DOIUrl":"https://doi.org/10.47277//JETT/9(2)390","url":null,"abstract":"A MgCr-based layered double hydroxide (LDH) was synthesized by a coprecipitation method, followed by an intercalation process using an oxalic anion. The materials were characterized using X-ray diffraction analysis, FT-IR spectroscopy, and pH pzc measurement. The materials were then applied as adsorbents for removal of methylene blue (MB) and rhodamine B (RhB) from aqueous solution. Pristine Mg/Cr LDH exhibited RhB adsorption capacity of 32.154 mg g⁻1, whereas the use of intercalated Mg/Cr LDH caused an increase in the capacity (139.526 mg g⁻1). Kinetic studies indicated that the dye adsorption using both LDHs followed a pseudo-second-order kinetic model; the K2 values of pristine and modified Mg/Cr LDH for RhB and MB were 6.970, 0.001, 0.426, and 2.056 g mg⁻1 min⁻1, respectively. The thermodynamic study identified that the adsorption of both dyes onto the LDHs was a spontaneous process and can be classified as physical adsorption with adsorption energies of <40 kJ/mol. Moreover, the desorption and regeneration experiments indicated the high economic feasibility and reusability of the LDHs. By using HCl as the optimal solvent, the LDHs could desorb as much as 98% of the dye and could be used as adsorbents with high adsorption capacity over three cycles.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124872702","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}

引用次数: 2

Sustainable Use of Chemical in Agricultural Soils and Implications for Precision Agriculture 农业土壤化学物质的可持续利用及其对精准农业的影响

Journal of Environmental Treatment Techniques Pub Date : 2020-12-26 DOI: 10.47277/jett/9(2)367

引用次数: 1

The Impact of Polluting Sources on the Physical-Chemical Properties of Water in the Curved River in Kosovo 污染源对科索沃弯曲河水体理化性质的影响

Journal of Environmental Treatment Techniques Pub Date : 2020-12-26 DOI: 10.47277/jett/9(2)374

{"title":"The Impact of Polluting Sources on the Physical-Chemical Properties of Water in the Curved River in Kosovo","authors":"","doi":"10.47277/jett/9(2)374","DOIUrl":"https://doi.org/10.47277/jett/9(2)374","url":null,"abstract":"It has already become a tradition to research the pollution with heavy metals of surface and groundwater. Very few studies have been done to assess the ecological status of rivers in Kosovo, based on their assessment through physical-chemical parameters, such as: pH, OT, BOD5, COD, N-NH4, NO3-, NT, PO4-P, PT. Although it is known that physical-chemical pollution of surface water is present in the flow of rivers, since in the impossibility of setting up plants for the treatment of industrial and urban wastewater, in all cases their discharge is done in a way free and uncontrolled. Therefore, our object of study consists in the real evidence of physical-chemical pollution of the waters of the Curved River (Kriva Reka), a segment of which crosses the industrial area of the Artana Mine, located in the northeastern part of Kosovo. During the research work we have identified six monitoring points: M1 and M6 represent the river waters outside the industrial zone, while the other four monitoring points reflect the industrial discharge waters and the polluted river waters in the industrial zone. Classical and instrumental methods of analytical chemistry have been applied to determine physical-chemical parameters. The results obtained after the analysis of water samples give the values of physical-chemical parameters, based on which we estimate that the Curved River is characterized by poor ecological status.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127552568","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}

引用次数: 6

A Systematic Review on Advancements in Drinking Water Disinfection Technologies: A Sustainable Development Perspective 可持续发展视角下饮用水消毒技术研究进展综述

Journal of Environmental Treatment Techniques Pub Date : 2020-12-26 DOI: 10.47277/jett/9(2)360

Sapna R. Shinde, S. Apte

{"title":"A Systematic Review on Advancements in Drinking Water Disinfection Technologies: A Sustainable Development Perspective","authors":"Sapna R. Shinde, S. Apte","doi":"10.47277/jett/9(2)360","DOIUrl":"https://doi.org/10.47277/jett/9(2)360","url":null,"abstract":"The Sustainable Development Goal 2015-30, which is the blueprint to achieve a better and sustainable future for all includes goal number six, aiming at the provision of clean water and sanitation by 2030 worldwide. But still the rural areas in developing nations are predominantly facing the scarcity of pathogen-free drinking water, which creates an urgent need for research in the area of water disinfection. The paper presents a systematic literature review of the conventional and novel water disinfection techniques supported by a bibliometric analysis based on the data from Scopus and Web of Science data from the year 1980 to 2020 for all the disinfection techniques. The novel and latest water disinfection technology in the literature studied by few researchers are also discussed and it can be concluded that the research related to these latest technologies is fewer and real-life usage is very scanty. The detailed literature review indicates the need for novel, decentralized, low-cost water disinfection technology for providing clean and pathogen-free water to all, overcoming the problems related to access of safe drinking water to rural communities. The paper also identifies the research gaps related to new technologies for water disinfection which needs to addressed in further studies.","PeriodicalId":353162,"journal":{"name":"Journal of Environmental Treatment Techniques","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124843211","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}

引用次数: 1