Geosystem Engineering最新文献_第6页

Treatment of industrial effluent to reclaim copper using adsorption technique 吸附法处理工业废水回收铜

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2140712

Shilpa Kalamani Bawkar, P. Choubey, Rukshana Parween, Rekha Panda, P. K. Singh, M. Jha, Jae-chun Lee

{"title":"Treatment of industrial effluent to reclaim copper using adsorption technique","authors":"Shilpa Kalamani Bawkar, P. Choubey, Rukshana Parween, Rekha Panda, P. K. Singh, M. Jha, Jae-chun Lee","doi":"10.1080/12269328.2022.2140712","DOIUrl":"https://doi.org/10.1080/12269328.2022.2140712","url":null,"abstract":"ABSTRACT Effluent generated during metal finishing in industries contains large amount of heavy metals, which get discharged into water bodies and creates environmental pollution as well as loss of metal values. Present studies report the adsorption of copper (Cu) from the effluent using Tulsion T-42 resin. Experiments were carried out for the adsorption of Cu from the effluent of Chemical and Mechanical Polishing (CMP) industries using cationic resin Tulsion T-42 (adsorbent). To get the optimized adsorption condition for copper the studies were carried out with varying process parameters i.e., contact time, adsorbent dose, pH, etc. Result of the batch experiments shows that 95% copper was adsorbed from the effluent containing 100 ppm copper using 0.1 g Tulsion T-42 in 50 mL feed solution at pH 4.0 in contact time of 30 min. The obtained data from Cu adsorption studies fitted well with Freundlich adsorption isotherm and followed second-order rate reaction. The 99% copper was found to be eluted from loaded adsorbent using 10% sulfuric acid in 60 min contact time. FT-IR result confirmed that complex with active sulphonic group of Tulsion T-42 was formed. The findings of the studies will be useful for the reclamation of copper from the waste water of metal finishing industries.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45493973","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

Electrowinning of gold from a dilute solution using hydrocyclone-type cell 用水力旋流器型电解槽从稀溶液中电积金

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2142855

Mooki Bae, Hong-Lyong Kim, Sookyung Kim, Hyunju Lee

{"title":"Electrowinning of gold from a dilute solution using hydrocyclone-type cell","authors":"Mooki Bae, Hong-Lyong Kim, Sookyung Kim, Hyunju Lee","doi":"10.1080/12269328.2022.2142855","DOIUrl":"https://doi.org/10.1080/12269328.2022.2142855","url":null,"abstract":"ABSTRACT The redox reaction mechanism of gold−cyanide [Au(CN)2 −] during hydrocyclone electrowinning was investigated in this work by conducting Hull cell test, potentiodynamic polarization, and computational fluid dynamics (CFD) simulations. A leaching solution of waste printed circuit boards (WPCBs) was prepared as an electrolyte, and the effects of flow rate and applied voltage on the recovery of gold and destruction of cyanide through hydrocyclone electrowinning were investigated. A numerical simulation of the flow field in the cell was performed, and the results were visualized by conducting a finite element analysis in FLUENT. The CFD simulations and Hull cell test showed that the cylindrical cathode region had a flow velocity of ~11.05 m·s−1, which was higher than that at the center of the cylindrical part (<6.45 m·s−1). The optimum conditions for electrowinning were found to be as: an electrode distance of 4.9 mm and a current density of 73.78 mA·cm−2. The anodic polarization results showed that an Ir-based mixed metal oxide (MMO) anode could more efficiently oxidize the free cyanide because of its high current density than other types of anodes (Ir-based MMO: 299.3 mA·cm−2 > SS304: 3.5 mA·cm−2 > Pt-coated Ti: 1.3 mA·cm−2). Through the demonstrated hydrocyclone electrowinning test, the gold concentration could be decreased from 100 to 0.24 mg·L−1 within 12 h while destroying almost total amount of free cyanide in a day.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44391531","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

Potential hydrometallurgical processes to recycle metals from discarded personal computer 从废弃的个人电脑中回收金属的潜在湿法冶金工艺

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2156400

Om Shankar Dinkar, Rukshana Parween, Rekha Panda, P. Choubey, B. Ambade, M. Jha

引用次数: 1

Current status of the recycling of e-waste in Indonesia 印度尼西亚电子废物回收的现状

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2142856

Kurniawan Kurniawan, Muhammad Dzikri Ahira Soefihara, D. C. Nababan, S. Kim

{"title":"Current status of the recycling of e-waste in Indonesia","authors":"Kurniawan Kurniawan, Muhammad Dzikri Ahira Soefihara, D. C. Nababan, S. Kim","doi":"10.1080/12269328.2022.2142856","DOIUrl":"https://doi.org/10.1080/12269328.2022.2142856","url":null,"abstract":"ABSTRACT Electronic waste (e-waste) has become a major economic and environmental concern. It requires the development of sustainable and integrated recycling systems capable of recovering valuable constituents while simultaneously protecting the environment. While many developed countries have established such recycling systems, most developing countries, including Indonesia, lack such systems and have a low level of public awareness about e-waste. This article focuses on the current state of e-waste recycling in Indonesia. The estimated amount of e-waste generation and distribution in the country, potential economic recovery, relevant legal frameworks, and recycling practices are presented. The review also highlights barriers to formal e-waste management and recycling in Indonesia, such as (i) superiority of the informal sector, (ii) lack of regulation and infrastructure, (iii) lack of awareness and reliable data about e-waste, (iv) low rate of research works on recycling technology development, and (v) large diversity of socio-economic and geographic conditions in Indonesia. The study suggests strategies for establishing a sustainable e-waste recycling system in Indonesia, including potential processing routes and scenarios that integrate the actors involved in e-waste collection, pretreatment, and metal extraction.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42388149","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

Sustainable recycling technology toward carbon neutrality: special issue dedicated to Dr. Jae-Chun Lee 迈向碳中和的可持续回收技术:李载春博士专刊

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2164125

Jaeryeong Lee

引用次数: 0

A Novel Process for Manufacturing Vanadium Dioxide(VO2) as a resource of Vanadium Electrolyte from Vanadium Pentoxide(V2O5) 五氧化二钒（V2O5）生产二氧化钒（VO2）的新工艺

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2156398

B. Kim, Taegong Ryu, Jihyuk Choi, Tae Jun Park, Hankwon Chang, JeongHyun Yoo, Chang-Youl Suh, S. Cho, K. Roh

引用次数: 0

Recovery of copper from industrial sludge as a sustainable resource: A review 从工业污泥中回收铜作为一种可持续资源：综述

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2161640

H. B. Trinh, Seung-Moak Kim, T. Son, Jaeryeong Lee

{"title":"Recovery of copper from industrial sludge as a sustainable resource: A review","authors":"H. B. Trinh, Seung-Moak Kim, T. Son, Jaeryeong Lee","doi":"10.1080/12269328.2022.2161640","DOIUrl":"https://doi.org/10.1080/12269328.2022.2161640","url":null,"abstract":"ABSTRACT The transition from the treatment of the industrial sludge as a solid waste to a potential resource by employing efficient processes is necessary for sustainable development to produce valuable metal such as copper. The recycling of Cu-bearing sludge is thus quite promising as compared to that of mining only primary ores, since it can reduce the energy consumption and environmental impacts due to greenhouse gas emission as well as the depletion of mineral resources. The present review paper emphasizes on the necessity of copper recovery from industrial sludge while examining the compositions and the characterization techniques applied, and current extraction and the separation approaches followed. The most significant issues addressed include the effective extraction of copper and still achieving selective separation from other impurities. The hydrometallurgical techniques provide more appropriate methods for copper recovery from the complex industrial sludge than other approaches; this too requires further investigations to enhance the extraction efficiency, separation selectivity from the leach solutions and the quality of obtained Cu products.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46466823","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

Review on the environment friendly leaching of rare earth elements from the secondary resources using organic acids 有机酸从次生资源中环保浸出稀土元素研究进展

IF 1.7

Geosystem Engineering Pub Date : 2022-07-04 DOI: 10.1080/12269328.2022.2135139

Riya Banerjee, S. Chakladar, A. Mohanty, S. Chakravarty, S. Chattopadhyay, M. Jha

{"title":"Review on the environment friendly leaching of rare earth elements from the secondary resources using organic acids","authors":"Riya Banerjee, S. Chakladar, A. Mohanty, S. Chakravarty, S. Chattopadhyay, M. Jha","doi":"10.1080/12269328.2022.2135139","DOIUrl":"https://doi.org/10.1080/12269328.2022.2135139","url":null,"abstract":"ABSTRACT Essential for smartphones, computers, batteries of hybrid and electric cars, medical scanners and weaponry, rare earth elements (REEs) play a pivotal role in every sphere of life globally. The race is on to develop alternative ways to utilize secondary sources, open new mines, reduce waste and recycle more. From being entirely dependent on China’s REE resources, the researchers and entrepreneurs globally are working towards development of alternative strategies to explore their indigenous resources to be self-sufficient. However, the existing strategies to extract these valuables rely on usage of mineral acids/alkalis. Continued effort on development of sustainable leaching methodologies led to the exploration of organic acids as a potential alternative. Low-molecular-weight carboxylic acids and organosulphonic acids have emerged as highly potent class of lixiviants for REE extraction. The knowledge of their variation in chemical structure and their complex potency towards lanthanides is essential towards development of an industrially viable process. In this review, the efficiency of the different organic acids in leaching REEs from various primary and secondary sources, along with their respective structural relevance has been summarized. This is expected to ameliorate the existing momentum of advancing nature-friendly industrial processes.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43126352","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: 4

Recovery of rare earth elements from coal fly ash using enrichment by sodium hydroxide leaching and dissolution by hydrochloric acid 氢氧化钠浸出富集-盐酸溶解法从粉煤灰中回收稀土元素

IF 1.7

Geosystem Engineering Pub Date : 2022-03-04 DOI: 10.1080/12269328.2022.2120092

H. B. Trinh, Seung-In Kim, Jaeryeong Lee

{"title":"Recovery of rare earth elements from coal fly ash using enrichment by sodium hydroxide leaching and dissolution by hydrochloric acid","authors":"H. B. Trinh, Seung-In Kim, Jaeryeong Lee","doi":"10.1080/12269328.2022.2120092","DOIUrl":"https://doi.org/10.1080/12269328.2022.2120092","url":null,"abstract":"ABSTRACT The most common method to recover valuable rare earth elements from the potential resource coal fly ash is direct leaching in acidic solution. However, the extraction of rare earth elements using only acid leaching is not sufficiently effective due to the presence of Al-Si-based glasses. In the present work, pre-treatment using NaOH leaching was investigated to reduce the content of Al-Si-based phase before subjecting to acid leaching. The treatment at conditions NaOH 5 M, at 100 °C and for 120 min could dissolve 53% of the ash sample, and the rare earth contents were enriched from 267 mg/kg to 556 mg/kg. The NaOH leaching promote the further extraction of rare earth elements in all of acid medias (HCl, HNO3 and H2SO4), and HCl was the most effective leachant. More than 90% of rare earth elements was dissolved in 5 M HCl solution at 50°C after 120 min. The combination of NaOH treatment and HCl leaching presented an effective approach to extract rare earth elements from coal fly ash with enrichment of rare earth element contents, increase the leaching efficiency and avoidance of harmful impacts to the environment due to the conventional pre-treatment using alkaline roasting.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47633307","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 strategy for ammonia odor monitoring, prediction, and reduction from livestock manure wastes in Korea: a short review 韩国畜禽粪便中氨气味的监测、预测和减少策略:简要回顾

IF 1.7

Geosystem Engineering Pub Date : 2022-03-04 DOI: 10.1080/12269328.2022.2120094

Sang-hun Lee, S. Bae

{"title":"A strategy for ammonia odor monitoring, prediction, and reduction from livestock manure wastes in Korea: a short review","authors":"Sang-hun Lee, S. Bae","doi":"10.1080/12269328.2022.2120094","DOIUrl":"https://doi.org/10.1080/12269328.2022.2120094","url":null,"abstract":"ABSTRACT Ammonia is a malodorous substance, even at low concentrations, that has harmful effects on humans and the environment. Ammonia is considered an alternative energy source for hydrogen energy transport. Most ammonia is emitted from livestock facilities, as the main sources of ammonia odor. Therefore, this study focused on the emission and dispersion of ammonia as the main compound in ammoniacal odor substances from livestock manure facilities, as well as on the treatment and recovery of ammonia near livestock facilities. First, this study reviewed the monitoring of ammoniacal odor recommended by multiple low-cost monitoring sensors integrated with information technology (IT). To enhance the monitoring data quality, periodic calibration and validation through reference instruments is essential. To estimate odor emissions, emission factors should be classified by considering various scenarios and conditions. The application of modelling is desirable for predicting the dispersion of ammonia and odors, but a simpler model should be developed for non-experts in the preliminary stage. For ammonia treatment and resource recovery, it is necessary to support the development of high-efficiency and eco-friendly treatment technologies, which should be tested in upscaled systems with actual odors under field conditions.","PeriodicalId":12714,"journal":{"name":"Geosystem Engineering","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44192133","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