Resources Processing最新文献_第3页

Solvent Extraction of Rhodium and Ruthenium from Chloride Solutions added Tin(II) with TOA and TOMAC in Benzene 用TOA和TOMAC在苯中萃取加锡氯溶液中的铑和钌

Resources Processing Pub Date : 2021-01-01 DOI: 10.4144/rpsj.68.57

K. Fujii, Koudai Nagano, Tasuma Suzuki, Masakazu Niinae

引用次数: 1

Conversion of Steel Converter Slag into HCl Gas Scavenger Using Alkali Fusion 用碱熔法将钢转炉渣转化为HCl气体清除剂

Resources Processing Pub Date : 2021-01-01 DOI: 10.4144/rpsj.68.64

T. Wajima

引用次数: 0

A Laboratory Experiment System for Developing Mine Drainage Treatment Technologies Using Constructed Wetlands—Sequencing Batch Treatment of Cd-Containing Neutral Mine Drainage— 利用人工湿地开发矿山水处理技术的实验室试验系统-含镉中性矿山水的序批处理

Resources Processing Pub Date : 2021-01-01 DOI: 10.4144/RPSJ.67.111

S. Soda, Ryo Sasaki, Thi Thu Huong Nguyen, Kentaro Hayashi, A. Kanayama

引用次数: 4

Results of Solar System Explorations and Their Implications to the Utilization of Space Resources 太阳系探索成果及其对空间资源利用的启示

Resources Processing Pub Date : 2021-01-01 DOI: 10.4144/rpsj.68.3

H. Miyamoto

引用次数: 0

Effects of Acid Mine Drainage from the Date Mine on Nearby Rivers 枣矿酸性矿井排水对附近河流的影响

Resources Processing Pub Date : 2021-01-01 DOI: 10.4144/RPSJ.67.128

Shingo Tomiyama, Tsubasa Hagino, T. Igarashi, M. Sakoda, Y. Masaki

{"title":"Effects of Acid Mine Drainage from the Date Mine on Nearby Rivers","authors":"Shingo Tomiyama, Tsubasa Hagino, T. Igarashi, M. Sakoda, Y. Masaki","doi":"10.4144/RPSJ.67.128","DOIUrl":"https://doi.org/10.4144/RPSJ.67.128","url":null,"abstract":"This paper describes the geochemistry of acid mine drainage (AMD) and river water around the Date Mine in southwest Hokkaido, Japan. The mine is located in a sulfide deposit that contains pyrite and generates AMD, which is currently being neutralized; however, the introduction of a passive treatment system (PTS) is being considered. In preparation for the introduction of the PTS, this study aims to evaluate the environmental impact of untreated AMD flowing into rivers. The flow rate of the river depends on precipitation, and the ratio of AMD to that of the river was in the range 0.0014–0.018. In mixing experiments of AMD and river water based on measured results, the formation of iron and copper precipitates with increasing pH was observed, which suggests the possibility of self-purification phe- nomena of heavy metals in the river. The calculated oxidation rate of Fe(II) increased with pH. The surface complexa-tion model in PHREEQC reproduced Cu concentration decrease due to coprecipitation with iron hydroxide. Assuming that untreated AMD is mixed with the river water, the Fe 2+ concentration decreased from 0.19 mg L –1 to 0.003 mg L –1 in the river.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91007039","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

Study on Arsenic Methyltransferase Expressed in Recombinant E. coli 重组大肠杆菌表达砷甲基转移酶的研究

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/RPSJ.67.80

M. Miyatake, Koshiro Takase, J. Hirose, K. Shiomori, H. Yokoi

{"title":"Study on Arsenic Methyltransferase Expressed in Recombinant E. coli","authors":"M. Miyatake, Koshiro Takase, J. Hirose, K. Shiomori, H. Yokoi","doi":"10.4144/RPSJ.67.80","DOIUrl":"https://doi.org/10.4144/RPSJ.67.80","url":null,"abstract":"This study aimed to facilitate efficient arsenic detoxification by inducing the microbial methylation of inorganic arsenic. Recombinant Escherichia coli strains K63 and KC42 were transformed to overexpress arsenic methyltransferase, and the methylation of inorganic arsenic was evaluated using the enzyme extracted from these strains. To ensure continuous reactions by maintaining enzymatic activity, the extracted enzyme was immobilized in microcapsules (MC) to catalyze the methylation of inorganic arsenic. The total yield of methylated organic arsenic compounds in strain K63 was 32.9% (after 2 h of incubation at pH 7.0 and 35°C), of which trimethyl arsenic compounds (TMAC) accounted for 8.3%. The total yield in strain KC42 was 35.9% (after 2 h of incubation at pH 6.5 and 35°C), of which TMAC accounted for 10.8%. When arsenic was methylated using MC prepared with the crude enzyme solution, the total yield of methylated organic arsenic compounds was 12.6% and 5.7% in strains K63 and KC42, respectively. The residual enzymatic activity was calculated to be 53.1% and 48.8% in strains K63 and KC42, respectively. Future studies should aim to increase the residual enzymatic activity, thus elevating the yield of organic arsenic compounds, by optimizing the conditions for enzyme immobilization in MCs.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75308160","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

Separation of Lithium and Cobalt Ions and Regeneration of Nitric Acid by Electrodialysis Using Bipolar Membranes for Water Splitting and Monovalent Cation Selective Bipolar Membranes 双极水分离膜和单价阳离子选择性双极膜的锂钴离子分离和硝酸的电渗析再生

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.66.123

Hiroshi Takahashi, Satomi Takao, Etsuko Kashiuchi

{"title":"Separation of Lithium and Cobalt Ions and Regeneration of Nitric Acid by Electrodialysis Using Bipolar Membranes for Water Splitting and Monovalent Cation Selective Bipolar Membranes","authors":"Hiroshi Takahashi, Satomi Takao, Etsuko Kashiuchi","doi":"10.4144/rpsj.66.123","DOIUrl":"https://doi.org/10.4144/rpsj.66.123","url":null,"abstract":"The demand for lithium-ion batteries has been rapidly increasing in the modern electronics and electric vehicle industries. Tremendous lithium-ion battery consumption leads to an increase in battery scrap, which has to be recycled to relieve the shortage of rare resources. We examined a new process for separation of lithium and cobalt ions, and the regeneration of nitric acid from their mixture solution by use of electrodialysis with water splitting and monovalent cation selective bipolar membranes. In the experiment with an electrodialysis cell divided between an anode and cathode with a water splitting, an anion exchange, a monovalent cation selective, and a water-splitting bipolar membrane, lithium ion selectively permeates to strip compartment through monovalent cation selective bipolar membrane. The nitrate ion also permeates through the anion-exchange membrane and regenerated to nitric acid solution by water splitting bipolar membrane. These results revealed that electrodialysis using water splitting and monovalent cation selective bipolar membrane is applicable to the selective separation of lithium and cobalt ions, and regeneration of nitric acid solution.","PeriodicalId":20971,"journal":{"name":"Resources Processing","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88132366","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

Synthesis of Hydrocalumite-like Compound from Blast Furnace Slag by Alkali Fusion using Waste Molten-Slag Heat, and Its Anion Removal Ability 废熔渣热碱熔法制备类氢钙石料及其除阴离子性能

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/RPSJ.67.86

T. Wajima

引用次数: 1

pH and Temperature Effects for Kinetics of Silica Polymerization toward Silica Scale Suppression pH和温度对二氧化硅聚合动力学的影响

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.67.22

Shota Tajima, S. Fuchida, Tatsuya Kato, C. Tokoro

引用次数: 0

Separation Properties of Ni and Co with Extractant Impregnated-Activated Carbon 浸渍活性炭萃取剂分离镍、钴的性能

Resources Processing Pub Date : 2020-01-01 DOI: 10.4144/rpsj.67.5

K. Kanoya, K. Sugamoto, Y. Baba, Takanori Tsukazaki

引用次数: 0