Clean-soil Air Water最新文献_第8页

Effect of ZnCl2, H3PO4, and KOH activation on low-temperature NH3-denitration performance of activated carbon ZnCl2、H3PO4和KOH活化对活性炭低温nh3脱硝性能的影响

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-14 DOI: 10.1002/clen.202300148

Bangfu Huang, Wanjun Li, Zhe Shi, Linjing Yang, Zhenjing Wen, Gaoyong Zi, Liubin Luo

{"title":"Effect of ZnCl2, H3PO4, and KOH activation on low-temperature NH3-denitration performance of activated carbon","authors":"Bangfu Huang, Wanjun Li, Zhe Shi, Linjing Yang, Zhenjing Wen, Gaoyong Zi, Liubin Luo","doi":"10.1002/clen.202300148","DOIUrl":"10.1002/clen.202300148","url":null,"abstract":"This study aims to explore the effect of the activator type, activation time, and activator concentration on the denitration performance of activated carbon (AC). Combined with denitration experiments, scanning electron microscopy, pore size analysis, and Fourier transform infrared spectroscopy characterization methods, an orthogonal experiment was conducted using zinc chloride (ZnCl2), phosphoric acid (H3PO4), and potassium hydroxide (KOH) as activators to explore the interaction between various factors and their effect on the denitration performance of AC. The results show that the denitration rate of ZnCl2-activated AC is generally low because a high concentration of ZnCl2 will block the micropores of AC and destroy the original structure. The denitration rate of H3PO4-activated AC decreased with the increase in H3PO4 concentration, especially severe blockage occurred on the AC-H3 surface. KOH activation can optimize the pore structure of AC and generate some oxygen-containing functional groups, which is beneficial to improve the adsorption performance of AC. Orthogonal experiments showed that the activator type had the most obvious effect on the denitration rate, followed by the activation time, whereas reagent concentration had little effect on the denitration rate. The optimum activation condition was 3 mol L−1 KOH at 80°C for 3.5 h.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505625","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Picture: Clean Soil Air Water. 11/2023 封面图片:11/2023清洁土壤空气水

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-14 DOI: 10.1002/clen.202370111

引用次数: 0

Masthead: Clean Soil Air Water. 11/2023 报头:清洁土壤空气水。11/2023

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-14 DOI: 10.1002/clen.202370112

引用次数: 0

Evaluation and economic value of Hedera colchica in urban land management 耧斗菜在城市土地管理中的评估和经济价值

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-09 DOI: 10.1002/clen.202200279

Mahsa Sadat Mirhosseini, Keivan Saeb, Masoud Kiadaliri, Aptin Rahnavard

{"title":"Evaluation and economic value of Hedera colchica in urban land management","authors":"Mahsa Sadat Mirhosseini, Keivan Saeb, Masoud Kiadaliri, Aptin Rahnavard","doi":"10.1002/clen.202200279","DOIUrl":"10.1002/clen.202200279","url":null,"abstract":"Carbon sequestration is the process of capturing, securing and storing carbon dioxide from the atmosphere. In this study, the carbon sequestration capacity of Hedera colchica was investigated in soil of a semiarid region in Iran. Samples were taken from plants cultivated in the semiarid area of the polluted metropolis of Tehran and the amount of sequestered carbon in the aboveground and underground parts of the plant was measured. The conversion coefficient of carbon sequestration of plant organs (stem, leaf, and root) was determined separately by the combustion method. Carbon tax policy was used to evaluate the carbon sequestration function, as the shadow price of carbon. The results showed a significant difference in the amount of carbon sequestration in different organs of the plant. Stems and roots with 29.3 and 4.3 t ha−1, respectively, showed the highest and lowest amount of carbon deposition. The results of the economic value showed that the carbon shadow price was $40567.6 ha−1 on average. In general, the results of this study showed that the organs of H. colchica can have a beneficial effect in the process of carbon sequestration.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135291568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recovery of phosphorus from aqueous media as vivianite by crystallization 通过结晶以维维安石的形式从水介质中回收磷

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-08 DOI: 10.1002/clen.202300142

Nurdan Buyukkamaci, Seda Karabacakogullari, Duygu Totur Pamik

{"title":"Recovery of phosphorus from aqueous media as vivianite by crystallization","authors":"Nurdan Buyukkamaci, Seda Karabacakogullari, Duygu Totur Pamik","doi":"10.1002/clen.202300142","DOIUrl":"10.1002/clen.202300142","url":null,"abstract":"Since phosphorus resources are limited, optimal management of available phosphorus (P) and phosphorus recovery is a vital issue for the entire world. Studies continue on more efficient and economical phosphorus recovery techniques from wastewater and sludge. Recovery of phosphorus as vivianite is a current issue worldwide and studies are ongoing. Vivianite is a valuable mineral used in some industrial facilities and agricultural activities. Therefore, recovery of P from wastewater based on vivianite formation not only contributes to the sustainable use of phosphorus but also provides potential economic opportunities. In this study, it was aimed to determine the recovery potential of phosphorus as vivianite and to evaluate the effects of operational conditions on phosphorus recovery. For this purpose, two types of lab-scale crystallizer, semibatch completely mixed and fluidized bed, were used. In experimental studies, the effects of operating parameters such as pH, Fe/P ratio, Fe feeding rate, and P concentration for vivianite crystallization were investigated. The highest phosphorus recovery was found at a Fe/P ratio of 1.8 and P removal efficiency of up to 69% was achieved by vivianite crystallization.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"51 12","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/clen.202300142","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135392369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of radon-induced radiation risk in indoor environments 评估室内环境中的氡诱发辐射风险

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-03 DOI: 10.1002/clen.202300124

Nedime İrem Elek, Nebiye Füsun Çam, Buket Canbaz Öztürk

引用次数: 0

Advancements in biodigester technology through the study of anaerobic digestion using statistical optimization and bioaccelerators 通过利用统计优化和生物加速器研究厌氧消化，推动生物发酵技术的发展

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-11-01 DOI: 10.1002/clen.202300102

Pablo Inocêncio Monteiro, André Bellin Mariano, Bianca do Santos Padilha, Yann Domingues de Moraes, Letícia Zaguine, Leonardo Rey Oliveira Lopes, Marcelo Lacerda de Moraes, Rúbia Martins Bernardes Ramos, Michele Rigon Spier

{"title":"Advancements in biodigester technology through the study of anaerobic digestion using statistical optimization and bioaccelerators","authors":"Pablo Inocêncio Monteiro, André Bellin Mariano, Bianca do Santos Padilha, Yann Domingues de Moraes, Letícia Zaguine, Leonardo Rey Oliveira Lopes, Marcelo Lacerda de Moraes, Rúbia Martins Bernardes Ramos, Michele Rigon Spier","doi":"10.1002/clen.202300102","DOIUrl":"10.1002/clen.202300102","url":null,"abstract":"Advances in biodigester technology have been promoted by the growing study of anaerobic digestion, with the aim of improving processes related to the utilized waste load. This research used the statistical tool Central Composite Rotatable Design to optimize the combination of microorganisms and enzymes for biodigestion. The experiment involved testing two microorganisms (EA and EB) and five enzymes (amylase, protease, lipase, cellulase, and amyloglucosidase) with food waste from nearby restaurants and WWTP sludge as an inoculant. The experiment was set up as Central Composite Rotatable Design (CCRD) 26-1, with 50 trials and a concentration of 14.5 g of volatile solids per liter. The dependent variables of cumulative biogas production (BG) and cumulative biomethane production (BM) were evaluated. The results showed that the independent variables EB and CA had negative and significant effects on BG and BM production. With optimized process conditions, the bioaccelerator significantly improved BG and BM responses compared to control trials by 72% and 88%, respectively. The biodigestion technique is a viable option for the treatment of organic waste, and the use of bioaccelerators may be a promising approach to improving biodigestion processes. This study contributes to the ongoing research on anaerobic digestion and biodigester technology, which seeks to improve the sustainable management of organic waste while producing renewable energy.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"52 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential positive effects of natural sunlight on a biological system for landfill leachate treatment 自然阳光对垃圾渗滤液处理生物系统的潜在积极影响

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-10-27 DOI: 10.1002/clen.202300065

Liyun Cai

{"title":"Potential positive effects of natural sunlight on a biological system for landfill leachate treatment","authors":"Liyun Cai","doi":"10.1002/clen.202300065","DOIUrl":"10.1002/clen.202300065","url":null,"abstract":"Activated sludge filtration performance is a significant mean to evaluate membrane fouling trend for wastewater treatment. Here the impact of sunlight irradiation on activated sludge filtration performance and microbial communities in sequencing batch reactors (SBRs) when treating raw landfill leachate were studied. The sludge in photic SBR (i.e., SBR exposed to natural sunlight) exhibited better filtration performance compared to dark SBR (i.e., SBR unexposed to sunlight). The removal efficiency of COD and NH4+-N in the photic SBR were slightly higher than those in the dark SBR. The contents of the extracellular polymeric substances (EPSs) of sludge in both SBRs initially increased and then decreased. However, in the later period, the sludge filtration performance worsened due to the fungal activity in the dark SBR. Natural sunlight irradiation promoted sludge filtration performance by affecting the microorganism structure in the photic SBR. The bacterial genus Thauera was dominant in the photic SBR (39.35%), whereas Planktosalinus and Ottowia were dominant in the dark SBR (16.84% and 12.55%, respectively). Natural sunlight irradiation had a prominent effect on the fungal diversity in the system, and filamentous bulking caused by the fungi genus Trichosporon’s proliferation was observed in the dark SBR but not in the photic SBR, which also increased the polysaccharide content.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"51 12","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of effecting parameters for flue gas desulfurization in a self-priming venturi scrubber using response surface methodology 利用响应面方法优化自吸式文丘里洗涤器中的烟气脱硫效应参数

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-10-24 DOI: 10.1002/clen.202300034

Manisha Bal, Payal Das, Bhim Charan Meikap

{"title":"Optimization of effecting parameters for flue gas desulfurization in a self-priming venturi scrubber using response surface methodology","authors":"Manisha Bal, Payal Das, Bhim Charan Meikap","doi":"10.1002/clen.202300034","DOIUrl":"10.1002/clen.202300034","url":null,"abstract":"Hydrogen sulfide (H2S), a highly poisonous and corrosive gas, is regarded as a hazardous air pollutant with significant effects on human health. Hence, reduction of hydrogen sulfide (H2S) gas from the atmosphere is very essential. In the present work, self-priming venturi scrubber is employed to extract H2S gas from the air. Response surface methodology (RSM) with a central composite design (CCD) has been selected to investigate maximizing the H2S removal efficiency by optimizing the process variables. Experiments were carried out by altering the throat gas velocity, outer cylinder liquid level and inlet concentration of H2S. The analysis of variance (ANOVA) test showed that the parameters had a significant effect on the efficiency of H2S removal. A quadratic equation has been developed that accurately predicts the percentage of removal efficiency. The appropriateness of the generated model has been verified by the value of higher R2 resulting from the regression analysis. According to the observations, the velocity of throat gas has the highest effect on the H2S removal efficiency, whereas inlet H2S concentration has the least effect.","PeriodicalId":10306,"journal":{"name":"Clean-soil Air Water","volume":"51 12","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135316094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Masthead: Clean Soil Air Water. 10/2023 刊头：清洁土壤空气水。2023年10月

IF 1.7 4区环境科学与生态学

Clean-soil Air Water Pub Date : 2023-10-11 DOI: 10.1002/clen.202370102

引用次数: 0