Process Safety and Environmental Protection最新文献

{"title":"Leakage process and spontaneous ignition of hydrogen within a tube after releasing from the storage container with pressures up to 20 MPa","authors":"Ya-Long Du, Z.Y. Sun, Qin Huang","doi":"10.1016/j.psep.2024.11.041","DOIUrl":"https://doi.org/10.1016/j.psep.2024.11.041","url":null,"abstract":"Albeit pressurized storage of gaseous hydrogen is the most common approach to hydrogen storage in the current industry, there is a risk of hydrogen leakage in current metal pipelines, following the potential of hydrogen spontaneous ignition during leakage. Under different burst pressures (from 4 MPa to 20 MPa, corresponding to the actual engineering pressure range in China’s current high/ultra-high-pressure pipelines), the present work investigates the leakage process of hydrogen within a tube by validated models. Hydrogen has been observed to spontaneously ignite when the burst pressure is no less than 4 MPa. The time to spontaneous ignition exponentially declines as burst pressure rises, but it can hardly be reduced to less than 10 μs since a period is required to prepare ignition conditions. Three modes of spontaneous ignition have been classified according to the locations at which initial flame kernels spontaneously appear. Mode I (burst pressure of fewer than 8 MPa) triggers spontaneous ignition near the tube’s wall, Mode III (burst pressure of more than 8 MPa) generates initial flame kernels at the tube’s central axis, while Mode II (burst pressure of 8 MPa) obtains the flame kernels at both locations. At lower burst pressures, the shockwave intensity alone cannot raise the hydrogen-air mixture's temperature to the ignition temperature; the help of boundary layer effects is essential to spontaneous ignition. At higher burst pressures, the shockwave intensity is dominant in raising the hydrogen-air mixture's temperature to reach the ignition condition. Furthermore, tulip flames expand rapidly under high-pressure conditions and form stable structures, indicating pressurized hydrogen exhibits a greater propensity for generating intense flames.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"190 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Enhanced H2S removal efficiency using CuO/Al2O3 catalyst impregnated with Ca(NO3)2: Influence of calcination temperature and mechanistic insights","authors":"Mengxue Yin, Suresh C. Pillai, Hailong Wang, Feiyue Fan, Hong Hou","doi":"10.1016/j.psep.2024.11.036","DOIUrl":"https://doi.org/10.1016/j.psep.2024.11.036","url":null,"abstract":"A series of Ca(NO<ce:inf loc=\"post\">3</ce:inf>)<ce:inf loc=\"post\">2</ce:inf>-Cu<ce:inf loc=\"post\">x</ce:inf>O/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> catalysts with different calcination temperatures were designed to remove H<ce:inf loc=\"post\">2</ce:inf>S effectively. Experimental and characterization results indicate that the calcination temperature can influence the catalyst's specific surface area, basic sites, and oxygen vacancies (VOs) concentration, thereby promoting its desulfurization performance. The Ca(NO<ce:inf loc=\"post\">3</ce:inf>)<ce:inf loc=\"post\">2</ce:inf>-Cu<ce:inf loc=\"post\">x</ce:inf>O/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> catalyst, calcined at 230 °C, exhibits an optimal surface structure. It demonstrates optimal H<ce:inf loc=\"post\">2</ce:inf>S desulfurization performance at a temperature of 60 °C and relative humidity of 60 %, achieving a removal capacity of 486.67 mg/g. The VOs in Cu<ce:inf loc=\"post\">x</ce:inf>O (CuO and Cu<ce:inf loc=\"post\">2</ce:inf>O) induce a unique catalytic of H<ce:inf loc=\"post\">2</ce:inf>O, which generates hydroxy radicals (·OH) to oxidize the H<ce:inf loc=\"post\">2</ce:inf>S anion to S. The introduction of Ca<ce:sup loc=\"post\">2+</ce:sup> provides basic sites to buffer pH, and NO<ce:inf loc=\"post\">3</ce:inf><ce:sup loc=\"post\">-</ce:sup> with H<ce:sup loc=\"post\">+</ce:sup> removes H<ce:inf loc=\"post\">2</ce:inf>S through cyclic oxidation, significantly enhancing the desulfurization performance of the Cu-based catalyst. The CaO-Cu<ce:inf loc=\"post\">x</ce:inf>O/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> catalyst, calcined at 700 °C, suffers from a deteriorated catalyst structure, leading to the rapid formation of desulfurization by-products due to the presence of CaO covering the catalyst surface. This diminishes the effectiveness of Cu, significantly impairing the catalyst's desulfurization performance (150.47 mg/g). Consequently, desulfurization mechanisms of Ca(NO<ce:inf loc=\"post\">3</ce:inf>)<ce:inf loc=\"post\">2</ce:inf>-Cu<ce:inf loc=\"post\">x</ce:inf>O/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> and CaO-Cu<ce:inf loc=\"post\">x</ce:inf>O/Al<ce:inf loc=\"post\">2</ce:inf>O<ce:inf loc=\"post\">3</ce:inf> are proposed, offering effective strategies for the design and optimization of subsequent high-efficiency catalysts.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"33 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Investigating the economic, energetic and exergetic aspects of semi-cylindrical solar still integrated with stepped-basins and phase change material","authors":"Mahmoud S. El-Sebaey, Mohammed El Ganaoui","doi":"10.1016/j.psep.2024.11.027","DOIUrl":"https://doi.org/10.1016/j.psep.2024.11.027","url":null,"abstract":"This study aims at improving the thermal analysis of a semi-cylindrical, stepped-basins solar still (SCSBSS) that incorporated with (PCM-Paraffin-wax) phase change material. The SCSBSS was evaluated and compared with the semi-cylindrical solar still (SCSS) as a conventional one under various water depths for Egyptian climate conditions for different salt water quantities. Furthermore, the economic analysis, energy and exergy efficiencies for various modifications were discussed. The results show that the best performance belongs to the SCSBSS with PCM which produced 3889 mL/m<ce:sup loc=\"post\">2</ce:sup>.day with an increase of the daily productivity of 44.52 % compared with SCSS without using PCM at salt water quantity of 20 L. The CPL of potable water and payback period for a SCSBSS with PCM were approximately 0.0157US$/L and 123 days with a considered lifespan of 10 years at salt water quantity of 20 L. In addition, the results indicated that the thermal and exergy efficiencies of SCSBSS with PCM were 36.86 % and 3.27 % respectively.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"21 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Enhanced removal of tetracycline using three-dimensional electrochemical system with Fe/N/S co-doped coffee grounds biochar particle electrodes: Performance and mechanism","authors":"Peixin Tang ,&nbsp;Xu Ren ,&nbsp;Jiahao Mei ,&nbsp;Yucheng Liu ,&nbsp;Kai Song ,&nbsp;Haifeng Fu ,&nbsp;Xin Peng ,&nbsp;Li Zeng ,&nbsp;Qiang Ma ,&nbsp;Zhicheng Pan","doi":"10.1016/j.psep.2024.11.013","DOIUrl":"10.1016/j.psep.2024.11.013","url":null,"abstract":"<div><div>In this study, Fe/N/S co-doped biochar was prepared from coffee grounds for using as particle electrodes (PE) to construct a three-dimensional electrochemical system (3DES). Tetracycline (TC) was selected as the simulated contaminant to evaluate the performance of 3DES in removing trace organic contaminates form water. First, characteristics analysis revealed that the PE was the micron-level carbon-based solid material with good electric conductivity, excellent catalytic performance and stability. Then, the performance of the 3DES was evaluated. About 92 % of TC and 76 % of total organic carbon (TOC) was removed under optimal operation conditions of potassium peroxydisulfate (PDS) addition of 3 mM, current density of 100 mA·cm⁻², PE dosage of 0.5 g·L⁻¹ and solution initial pH of 7. The 3DES exhibited satisfactory stability and application prospect for trace organic contaminates treatment in real water. Furthermore, analysis of the reactive oxidized species (ROS) revealed that the ¹O₂ and O₂^•− contributed much more to the TC removal than ^•OH and SO₄^•−. In addition, three possible pathways of TC removal in 3EDS was proposed. TC was degraded to organics with simple structures through functional group removal, ring-opening, and C<img>O bond rupturing, and finally mineralized into CO₂, H₂O, and NO₃^-, etc. Finally, toxicity evaluation of the intermediate products indicated that the ecological risks of TC was effectively reduced through 3DES. This study provided a new strategy for resource utilization of carbon-based solid waste and efficient treatment of refractory wastewater.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"192 ","pages":"Pages 1501-1514"},"PeriodicalIF":6.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Catalytic conversion of plastic waste into diesel fuel through pyrolysis and hydroprocessing","authors":"R. Vedavalli, P. Tamizhdurai, C. Kavitha, V.L. Mangesh, G.S.V. Seshu Kumar, P. Saravanan, A. Subramani, P. Sasikumar, Nadavala Siva Kumar, Salwa B. Alreshaidan, Abdulaziz I. Alromaeh, Ahmed S. Al-Fatesh","doi":"10.1016/j.psep.2024.11.029","DOIUrl":"https://doi.org/10.1016/j.psep.2024.11.029","url":null,"abstract":"This study evaluates the potential of hydro-processed plastic pyrolysis oil (HPO) as a sustainable alternative fuel derived from mixed plastic waste. The physicochemical properties of diesel, mixed plastic pyrolysis oil (MPPO), and HPO were thoroughly analyzed according to IS standards, enabling a direct comparison and alignment of HPO characteristics with EN590 diesel fuel standards. Gas chromatography-mass spectrometry (GC-MS) analysis identified key fuel components—n-alkanes, alkenes, benzene, and naphthalene with HPO showing 98 % compositional similarity to commercial diesel. The HPO blend with various percentage of pure diesel ratio is (30:70, 60:40 and 90:10). The hydroprocessing technique effectively reduced the alkene content of MPPO, enhancing the purity and quality of the resulting HPO. This refinement was crucial in ensuring that the oil met the necessary fuel standards. Engine performance evaluations further indicated that blending HPO with conventional diesel resulted in emissions with 95 % similarity to those of standard diesel fuel. This close match in emission profiles underscores the potential of HPO as a cleaner and more environmentally friendly fuel alternative. Additionally, the increased aromatic content in HPO, due to hydroprocessing, significantly improved combustion properties. This enhancement not only supports the feasibility of using HPO as a substitute for traditional diesel but also suggests that HPO may offer superior performance in specific applications. Overall, these findings highlight the potential of HPO as a sustainable fuel option, capable of addressing the environmental impacts associated with both plastic waste and fossil fuel consumption. The study demonstrates the environmental benefits of converting plastic waste into valuable fuel through pyrolysis and hydroprocessing, offering a promising strategy for sustainable plastic waste management and advancements in environmental sustainability and the fuel industry.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"12 1","pages":""},"PeriodicalIF":7.8,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Recovery of gold ions from thiosulfate solution using an electrogenerative process","authors":"Qike Zhang,&nbsp;Yanhe Nie,&nbsp;Qiang Wang,&nbsp;Xiaonan Feng","doi":"10.1016/j.psep.2024.11.026","DOIUrl":"10.1016/j.psep.2024.11.026","url":null,"abstract":"<div><div>Traditional zinc powder cementation method for recovering gold ions from thiosulfate solution has the disadvantages such as high consumption of active metal, surface passivation, and co-deposition of copper ions. The key to solving these issues is providing the necessary electrons for the reduction of Au(S₂O₃)₂^3- while avoiding direct contact between zinc powder and the leaching solution. In this study, a novel electrogenerative device with ion exchange membranes separating the anode and cathode is developed for the recovery of gold ions from thiosulfate solution. The oxidation reaction of zinc electrode occurs in the anode chamber, while the reduction reaction of gold ions occurs on a platinum electrode in the cathode chamber. The optimal experimental conditions for the gold recovery are determined to be using a cation exchange membrane, with the anode solution of 0.08 M ZnSO₄, pH = 6, and the cathode solution of 0.10 M Na₂S₂O₃, 5 mM CuSO₄, 0.5 M NH₃·H₂O, pH = 10, with an initial gold concentration of 10 mg/L. It obtains the gold recovery of 99.59 %. Compared the zinc powder cementation method with the similar gold recovery, the electrogenerative process reduces zinc consumption by 67 % and prevents the passivation on the zinc surface caused by copper, oxygen, and sulfur.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"192 ","pages":"Pages 1515-1524"},"PeriodicalIF":6.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"COD and toxicity reduction of wastewater using a hybrid advanced oxidation process of sonication with chitosan-based hydrogel beads","authors":"Komal Verma,&nbsp;Vijayanand Suryakant Moholkar","doi":"10.1016/j.psep.2024.11.024","DOIUrl":"10.1016/j.psep.2024.11.024","url":null,"abstract":"<div><div>This study reports the treatment of industrial wastewater (WW) with a hybrid advanced oxidation process (AOP) that uses sonication in the presence of floatable chitosan-based hydrogel beads. These hydrogel beads were synthesized with Fe₃O₄ decorated activated charcoal nanoparticles (Fe₃O₄@AC nanocomposites) as filler material. The hydrogel beads (Fe₃O₄@AC@CH) served dual purpose as adsorbents and heterogeneous Fenton reagents. Statistical experimental design was used to optimize the hybrid AOP. At optimal conditions (0.75 M H₂O₂, 1 g/L Fe₃O₄@AC@CH beads, pH 5.12), a COD removal of 96.12 % and TOC removal of 78.14 % was achieved in 1 h treatment. Several control experiments were performed concurrently to identify synergistic interactions in the hybrid AOP. The surface and porous structure of the hydrogels absorbed substantial amounts of pollutants. Fenton reactions occurring on the hydrogel beads' surface produced radicals <span><math><mrow><mmultiscripts><mi>O</mi><none></none><none></none><mprescripts></mprescripts><none></none><mi>•</mi></mmultiscripts><mi>H</mi></mrow></math></span> and <span><math><msubsup><mrow><mi>HO</mi></mrow><mrow><mn>2</mn></mrow><mrow><mi>•</mi></mrow></msubsup></math></span> that successfully degraded and mineralized the pollutants. Sonication induced intense micro-mixing in the medium, enhancing mass transfer between bulk medium and surface/pores of hydrogel beads. The toxicity of WW was reduced by ∼ 70 % after treatment. Major contaminants in the WW degraded during treatment were identified using LC−MS analysis. Fe₃O₄@AC@CH hydrogel beads had excellent recyclability till six consecutive treatment cycles.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"193 ","pages":"Pages 158-169"},"PeriodicalIF":6.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Synergistic effect of carbothermal reduction and sodium salts leaching in the process of iron recovery from copper slag","authors":"Sonia Abid Bhatti,&nbsp;Xiu-chen Qiao","doi":"10.1016/j.psep.2024.11.031","DOIUrl":"10.1016/j.psep.2024.11.031","url":null,"abstract":"<div><div>Copper slag is mostly considered a waste material and around 41 wt% of total iron content present in it is lost. Iron is mostly present in copper slag as fayalite (Fe₂SiO₄). In this study, Iron was recovered by the decomposition of Fe₂SiO₄ using the synergistic effect of carbothermal reduction and sodium salts leaching for the first time. The results showed that 68.39 % of iron was recovered from copper slag by carbothermal reduction at 1000 °C for 1 hr. The iron recovery increased to 83.45, 93.39 and 97.8 %, respectively, after further 1 hr leaching by 2 M NaOH, 1 M Na₂CO₃ and 2 M NaOH+1 M Na₂CO₃ at 100 °C. The leaching results indicated that the increased NaOH concentration from 1 to 2 M improved the removal of silica, which in turn led to higher iron recovery. The increase of Na₂CO₃ concentration from 1 to 2 M showed a negative effect on iron recovery. The combination of 2 M NaOH and 1 M Na₂CO₃, however, led to the highest iron recovery of 97.8 % because NaOH+Na₂CO₃ gives Na₂O that is easier to react with SiO₂ with only −194.3 kJ energy requirement. Mass balance calculations indicated that before the leaching process, 345 kg mass was lost, whereas, after the leaching process the amount of discarded waste was only 260.8 g. Therefore, the present study not only provides 97.8 % iron recovery but also reduces the discharge of secondary solid waste due to no addition of additives.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"193 ","pages":"Pages 170-182"},"PeriodicalIF":6.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Performance and economy of antibiotic adsorption by the composite of plant decomposed liquid, chemical modifier, and clay","authors":"Hongyan Deng ,&nbsp;Yuting Song ,&nbsp;Wenbin Li ,&nbsp;Mah Noor Fatima ,&nbsp;Hamida Bibi ,&nbsp;Siyu Ye","doi":"10.1016/j.psep.2024.11.025","DOIUrl":"10.1016/j.psep.2024.11.025","url":null,"abstract":"<div><div>Antibiotics is one of the four types of new pollutants which are widely concerned in the world. To investigate the performance and economy of antibiotic adsorption by a composite made of clay, plant decomposed liquid (DL), and chemical modifier, bentonite (B) and kaolin (K) were modified by the DL of <em>Alternanthera philoxeroides</em> to prepare biological clays. Then, dodecyl dimethyl betaine (BS), polyacrylamide (PAM), and ethylenediaminetetraacetic acid (EA) were compositely modified on the biological clay to prepare different chemical–biological clays. The thermodynamic and kinetic characteristics of oxytetracycline (OTC) and chlortetracycline (CTC) adsorption were investigated by batch treatment. The adsorption changes in antibiotics on the modified clays under various pH levels, ionic strengths, and temperatures were compared, and the economy of antibiotic adsorption by different modified clays was analyzed. The maximal adsorption capacity (<em>q</em>_m) values for OTC and CTC were 82.48–301.08 and 63.00–258.26 mmol/kg, respectively, ranking in the order of PAM- &gt; BS- &gt; EA-modified biological clays. The <em>q</em>_m values of antibiotics by different modified Bs were higher than those by different modified Ks. In the pH range of 3–7 and temperature range of 10 °C–30 °C, high temperature and pH were conducive to antibiotic adsorption, which was determined as a spontaneous, endothermic, and entropy-increasing process. The amount of antibiotic adsorption initially increased and then decreased with the increase in ionic strength, with the maximum adsorption observed at 0.1 mol/L ionic strength. The adsorption of antibiotics by different modified clays conformed to the pseudo-first-order kinetic equation. The economy (<em>q</em>_m/price) of different _modified clays for antibiotic adsorption ranged between 29.55 and 169.66 mg/¥, and the PAM-modified biological clays showed the highest economy. The modified Bs had higher economy in antibiotic adsorption than the modified Ks.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"192 ","pages":"Pages 1408-1419"},"PeriodicalIF":6.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}

{"title":"Hydrogen sulphide inhibition in cattle slurry by use of an oxygen based slurry amendment","authors":"S. Connolly ,&nbsp;D.J. Krol ,&nbsp;D. Kelleghan ,&nbsp;V. O’Flaherty","doi":"10.1016/j.psep.2024.11.022","DOIUrl":"10.1016/j.psep.2024.11.022","url":null,"abstract":"<div><div>Hydrogen sulphide (H₂S) is a malodorous gas that is produced in anaerobic environments where sulphur containing matter is present. Globally, farms in which liquid manure/slurry is stored is a source of H₂S which can lead to many acute and chronic health problems and even death. Farming is one of the most dangerous professions globally and reducing the risk of sulphide poisoning on farms will help ensure a safer work environment. The inhibition of H₂S production from cattle slurry may also reduce air pollution. In this study, a series of slurry storage experiments were conducted. The first experiment treated 20 L of cattle slurry bi-monthly using a mix of hydrogen peroxide and potassium iodide as well as calcium chloride, while the second experiment treated 660 L in which the same treatments and schedule were used. A small-scale storage trial was carried out over 29 days in which slurry was treated as before and sulphate concentrations were measured repeatedly. A maximum inhibition of H₂S concentrations of 87 % and 81 % was recorded from the 20 L and the 660 L storage experiments, respectively. The treatment did not affect sulphate concentrations in slurry which are critical for plant growth.</div></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"193 ","pages":"Pages 125-131"},"PeriodicalIF":6.9,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}