Case Studies in Chemical and Environmental Engineering最新文献_第3页

Long-term full-scale evaluation of three membrane bioreactor plants for coconut-processing wastewater treatment: Energy, cost, and pretreatment impacts 三个膜生物反应器厂对椰子加工废水处理的长期全面评估：能源、成本和预处理影响

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2025-12-17 DOI: 10.1016/j.cscee.2025.101310

Feli Zulhendri , David Stuckler , Antony Simon , Felix Zulhendri , Krishna Pagilla

{"title":"Long-term full-scale evaluation of three membrane bioreactor plants for coconut-processing wastewater treatment: Energy, cost, and pretreatment impacts","authors":"Feli Zulhendri , David Stuckler , Antony Simon , Felix Zulhendri , Krishna Pagilla","doi":"10.1016/j.cscee.2025.101310","DOIUrl":"10.1016/j.cscee.2025.101310","url":null,"abstract":"<div><div>Data from three full-scale membrane bioreactor (MBR) plants treating coconut-processing wastewater in North Sumatra, Indonesia, were collected over five years and analyzed using a mass-balance, load-based framework. Energy and cost were reported as intensities (kWh/kg and USD/kg COD removed) and as volumetric indicators (kWh/m<sup>3</sup> and USD/m<sup>3</sup> of wastewater treated). All plants achieved >99.5 % removal of COD, BOD, and TSS. The electricity demand ranged from 0.37 to 0.82 kWh/m<sup>3</sup>, and the treatment cost ranged from 37.7 to 69.5 USD/m<sup>3</sup> among the three plants. On a load basis, COD removal required 0.015 to 0.182 kWh/kg and 3.19 to 11.7 USD/kg; BOD removal required 0.148 to 0.518 kWh/kg and 9.95 to 33.5 USD/kg; and TSS removal required 0.339 to 1.99 kWh/kg and 27.7 to 43.9 USD/kg. Plants with better pretreatment, including filter presses and fermentation tanks, consistently achieved lower energy use and cost. Regression analysis confirmed that each additional kilogram per day of residual TSS in wastewater increased downstream aeration and MBR electricity demand by 0.41 kWh/day (p < 0.001). This study provides the first multi-year, full-scale benchmarks for MBR treatment of high-strength coconut wastewater and demonstrates how practical solids-oil pretreatment can halve energy demand and double cost-effectiveness. The findings offer actionable guidance for engineers, operators, and regulators designing sustainable agro-industrial wastewater systems.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101310"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925674","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

Performance of Chlorella vulgaris in iron removal from mildly neutralized acid mine drainage 普通小球藻在轻度中和酸性矿井废水中的除铁性能

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2025-12-23 DOI: 10.1016/j.cscee.2025.101316

Lina Patricia Vega Garzon , Paula Moreno , Gloria Lucia Camargo Millán

引用次数: 0

Scaling up high-gravity bioethanol production using immobilized Saccharomyces cerevisiae: Operational stability and performance 利用固定化酿酒酵母扩大高重力生物乙醇生产：操作稳定性和性能

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2026-04-22 DOI: 10.1016/j.cscee.2026.101391

Astrilia Damayanti , Zuhriyan Ash Shiddieqy Bahlawan , Irene Nindita Pradnya , Andri Cahyo Kumoro , Nauroh Nadzifah , Hisam Mansur , Ikliliya Zahwa Maulidiya , Abdurrahman Kholish Faizi

{"title":"Scaling up high-gravity bioethanol production using immobilized Saccharomyces cerevisiae: Operational stability and performance","authors":"Astrilia Damayanti , Zuhriyan Ash Shiddieqy Bahlawan , Irene Nindita Pradnya , Andri Cahyo Kumoro , Nauroh Nadzifah , Hisam Mansur , Ikliliya Zahwa Maulidiya , Abdurrahman Kholish Faizi","doi":"10.1016/j.cscee.2026.101391","DOIUrl":"10.1016/j.cscee.2026.101391","url":null,"abstract":"<div><div>High-gravity (HG) fermentation is a pivotal strategy for enhancing bioethanol concentration and reducing distillation costs. However, maintaining cell viability and fermentation efficiency over multiple cycles remains a significant challenge during scale-up. This study investigates the performance and operational stability of <em>Saccharomyces cerevisiae</em> immobilized in calcium alginate beads for HG glucose fermentation. The system was evaluated across 13 repeated batch cycles in both a laboratory-scale and a 2-L bench-scale Stirred-Tank Bioreactor (STR). Results demonstrated that the immobilized system achieved peak performance at an initial glucose concentration of 172 g/L, maintaining an average ethanol yield of (86.51 ± 1.41)% and a mean volumetric productivity of (0.40 ± 0.01) g/L·h across 13 repeated batch cycles. While scaling up to the 2-L STR, the beads remained structurally intact, without fragmentation, under hydrodynamic shear, maintaining consistent metabolic activity throughout the process. The findings demonstrate the high operational stability of the immobilized cell system, with potential for industrial applications, and provide a technical framework for the scaling-up of HG bioethanol production while maintaining consistent yield and structural integrity across 13 repeated cycles.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101391"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167949","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

Microfluidic-assisted green synthesis of Calotropis procera-derived ZnO quantum dots and evaluation of their antibacterial and antifungal properties against plant pathogens 微流体辅助绿色合成牛角豆衍生氧化锌量子点及其对植物病原体的抗菌和抗真菌性能评价

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-19 DOI: 10.1016/j.cscee.2026.101330

Behnam Zanjani Nejad Fard , Fateme Aghamir , Ghasem Eghlima , Tayebeh Moradi Alvand , Zinab Moradi Alvand

{"title":"Microfluidic-assisted green synthesis of Calotropis procera-derived ZnO quantum dots and evaluation of their antibacterial and antifungal properties against plant pathogens","authors":"Behnam Zanjani Nejad Fard , Fateme Aghamir , Ghasem Eghlima , Tayebeh Moradi Alvand , Zinab Moradi Alvand","doi":"10.1016/j.cscee.2026.101330","DOIUrl":"10.1016/j.cscee.2026.101330","url":null,"abstract":"<div><div>This study compared ultrasonic- and microfluidic-assisted green synthesis of zinc oxide quantum dots (ZnO QDs) using <em>Calotropis procera</em> leaf extract as a bio-reducing and stabilizing agent. Both routes generated phase-pure wurtzite ZnO confirmed by XRD; the microfluidic route yielded sharper reflections and narrower size distribution, indicating higher crystallinity and monodispersity. TEM showed aggregated ultrasonic QDs (5–15 nm) versus uniform spherical ones under continuous flow. Optical analyses displayed size-dependent absorption near 398 nm (ultrasonic) and 392 nm (microfluidic) with luminescence peaks at 552–557 nm. EDX verified Zn–O bonding and minimal impurities. Antimicrobial tests revealed stronger activity for QDs than the plant extract, with MIC = 0.10 mg/mL for <em>Ralstonia solanacearum</em> and 0.40–0.80 mg/mL for <em>Pseudomonas syringae</em>. Incorporation into a microfluidic bio-platform enhanced efficacy by improving nanoparticle–cell contact and mixing, resulting in 1.4-fold higher nucleic-acid leakage and 25 % greater K<sup>+</sup> efflux within 15 min. The QDs also inhibited <em>Botrytis cinerea</em> and <em>Fusarium spp.</em> and showed biosafety (LC<sub>50</sub> = 850 ± 21 μg/mL). Overall, the microfluidic method produced structurally uniform, pure, and bio-efficient ZnO QDs, establishing <em>C. procera</em>-derived QDs as sustainable, high-performance antimicrobial nanomaterials.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101330"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077447","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

Effects of feed wastewater characteristics and recovery rate on industrial wastewater reuse by reverse osmosis process 饲料废水特性及回收率对反渗透工艺回用工业废水的影响

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2026-01-06 DOI: 10.1016/j.cscee.2026.101324

Cong-Sac Tran , Quang-Huy Hoang , Van-Truc Nguyen , Phuong-Thao Nguyen , Mai-Nhu Hoang , Huu-Viet Nguyen , Thi-Kim-Quyen Vo , Xuan-Thanh Bui

{"title":"Effects of feed wastewater characteristics and recovery rate on industrial wastewater reuse by reverse osmosis process","authors":"Cong-Sac Tran , Quang-Huy Hoang , Van-Truc Nguyen , Phuong-Thao Nguyen , Mai-Nhu Hoang , Huu-Viet Nguyen , Thi-Kim-Quyen Vo , Xuan-Thanh Bui","doi":"10.1016/j.cscee.2026.101324","DOIUrl":"10.1016/j.cscee.2026.101324","url":null,"abstract":"<div><div>The rapid growth of industrial zones has increased wastewater generation and placed pressure on industrial water supplies. This study evaluated the performance, membrane fouling, and energy consumption of a lab-scale RO system at different wastewater sources and recovery rates for potential reuse. The results showed that the quality of effluent after membrane bioreactor (MBR) treatment was higher permeate quality than that after physicochemical 2 (PC2), with overall removals of about 90–96 % for EC, TDS, Ca<sup>2+</sup>, and total hardness, except for total Fe and color. As the recovery increased from 40 to 80 %, removal efficiencies decreased slightly (≤5 %), with the highest overall removal at 60 %. The specific energy consumption (SEC) of the RO system when operating with MBR effluent was 0.96 kWh/m<sup>3</sup>, about 8 % higher than that after PC2 effluent, and decreased from 0.68 to 0.58 kWh/m<sup>3</sup> when the recovery rate increased from 40 % to 80 %. Furthermore, the membrane fouling index when operating with after MBR effluent was 1.1 times lower than that after PC2 effluent and increased with increasing recovery. Therefore, the quality of feed wastewater and recovery rate should be considered when RO systems are applied for wastewater reuse purposes.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101324"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173217","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

Synergistic effects of combining ZIF-8 and graphene oxide inside cellulose acetate-based mixed matrix membranes on the removal of methylene blue 醋酸纤维素基混合基质膜内ZIF-8与氧化石墨烯复合对亚甲基蓝去除的协同效应

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2026-02-02 DOI: 10.1016/j.cscee.2026.101338

Putu Doddy Sutrisna , Pra Cipta Buana Wahyu Mustika , Candra Wijaya , Verdianto Indra Wijaya Sutama Putra , Putu Dhiyo Dharmayoga Denaswara , Ronaldo Pangestu Hadi , Aloisiyus Yuli Widianto , Edy Purwanto

{"title":"Synergistic effects of combining ZIF-8 and graphene oxide inside cellulose acetate-based mixed matrix membranes on the removal of methylene blue","authors":"Putu Doddy Sutrisna , Pra Cipta Buana Wahyu Mustika , Candra Wijaya , Verdianto Indra Wijaya Sutama Putra , Putu Dhiyo Dharmayoga Denaswara , Ronaldo Pangestu Hadi , Aloisiyus Yuli Widianto , Edy Purwanto","doi":"10.1016/j.cscee.2026.101338","DOIUrl":"10.1016/j.cscee.2026.101338","url":null,"abstract":"<div><div>Mixed matrix membranes (MMMs) combining zeolitic imidazolate framework-8 (ZIF-8) and graphene oxide (GO) within a cellulose acetate (CA) matrix were fabricated via phase inversion for methylene blue (MB) dye removal. ZIF-8 introduced rigid microporous domains that enhanced dye retention through adsorption and steric hindrance, while GO improved membrane hydrophilicity and filler dispersion. SEM and XRD analyses confirmed uniform filler incorporation and partial structural ordering, whereas excessive GO loading reduced apparent crystallinity. ZIF-8 incorporation increased membrane hydrophobicity and reduced permeability; however, the addition of GO partially mitigated this effect, leading to improved flux relative to ZIF-8-only membranes while maintaining high rejection. The optimized CA/ZIF-8 + GO membrane achieved 99.7% MB removal, demonstrating a synergistic balance between permeability and selectivity. These findings highlight the potential of hybrid-filler CA-based MMMs as sustainable adsorptive ultrafiltration membranes for dye wastewater treatment, supporting SDG 6 and SDG 12.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101338"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173223","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

Enhanced nitrogen removal in sponge membrane bioreactor coupled with iron scraps for municipal wastewater treatment: Performance and microbial community shifts 海绵膜生物反应器加铁渣处理城市污水的脱氮效果：性能和微生物群落变化

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2025-12-22 DOI: 10.1016/j.cscee.2025.101318

Ngo Hoang Long , Phan Nhu Nguyet , Ngo Thi Thuan , Tran Le Dang Khoa , Xuan-Thanh Bui , Huu-Viet Nguyen , Van-Tung Tra , Masashi Hatamoto , Takahiro Watari , Takashi Yamaguchi

{"title":"Enhanced nitrogen removal in sponge membrane bioreactor coupled with iron scraps for municipal wastewater treatment: Performance and microbial community shifts","authors":"Ngo Hoang Long , Phan Nhu Nguyet , Ngo Thi Thuan , Tran Le Dang Khoa , Xuan-Thanh Bui , Huu-Viet Nguyen , Van-Tung Tra , Masashi Hatamoto , Takahiro Watari , Takashi Yamaguchi","doi":"10.1016/j.cscee.2025.101318","DOIUrl":"10.1016/j.cscee.2025.101318","url":null,"abstract":"<div><div>This study investigates the performance of a sponge membrane bioreactor (SMBR) integrated with waste iron scraps as an innovative approach to enhance nitrogen removal from municipal wastewater. The incorporation of iron scraps substantially improved the total nitrogen (TN) removal efficiency, increasing from 35.3 ± 10.4 % to 62.4 ± 26.9 %, while maintaining stable chemical oxygen demand (COD) removal above 90 % and ammonium removal greater than 80 % at an iron dosage of 60 g/L. Iron supplementation promoted denitrification by creating localized anoxic microenvironments and stimulating the enrichment of iron-reducing and denitrifying bacteria such as <em>Geothrix</em>, <em>Aquabacterium</em>, and <em>Roseiarcus</em>, with relative abundances increasing from 0.2 % to 6.1 %, 1.4 %–4.8 %, and 0.8 %–1.5 %, respectively. Microbial community analysis further revealed significant shifts in dominant phyla, including <em>Proteobacteria</em>, <em>Acidobacteriota</em>, and <em>Bacteroidota</em>, with relative abundances increased from 68.3 % to 70.1 %, 2.0 %–9.1 %, and 1.0 %–7.8 %, respectively. These shifts indicate strengthened nitrogen transformation pathways within the system. These findings demonstrate that the reuse of waste iron scraps as bioactive carriers is an effective and environmentally sustainable strategy for enhancing nitrogen removal efficiency and microbial functional diversity in SMBR.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101318"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925670","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

Organizational life cycle assessment: A case study in the fashion industry small and medium enterprises 组织生命周期评估：时尚行业中小企业的案例研究

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2025-12-17 DOI: 10.1016/j.cscee.2025.101313

Salik Ahmed , Marco Ciro Liscio , Paolo Sospiro , Irene Voukkali , Antonis A. Zorpas

{"title":"Organizational life cycle assessment: A case study in the fashion industry small and medium enterprises","authors":"Salik Ahmed , Marco Ciro Liscio , Paolo Sospiro , Irene Voukkali , Antonis A. Zorpas","doi":"10.1016/j.cscee.2025.101313","DOIUrl":"10.1016/j.cscee.2025.101313","url":null,"abstract":"<div><div>Organizations are increasingly committed to reducing their environmental footprints, a process fraught with the complex challenge of identifying and mitigating unique environmental impacts and hotspots without merely shifting burdens elsewhere. This study applies Organizational Life Cycle Assessment (OLCA) methodology using ISO 14040/14044 and ISO/TS 14072 guidance, mapped gate-to-gate flows for the firm's entire 2023 output. Inputs and emissions were compiled on-site and modelled in SimaPro 9.1.1 with the Ecoinvent 3.3 “allocation, cut-off” database, applying ReCiPe 2016 Midpoint (H) across 18 impact categories. The results show that electricity use is the main environmental hotspot, contributing 43.5 % to total climate impacts, while cotton fibre accounts for 87.3 % of freshwater eutrophication and 37.8 % of water consumption; combined measures on renewable electricity and recycled fibres could reduce the organisation's overall climate footprint by up to 34.6 %. To address these impacts, the adoption of renewable energy sources like solar energy systems to reduce electricity consumption is recommended. This analysis pinpoints concise improvements: transition to renewable electricity, favour green suppliers of water-efficient cotton and recycled polyester and replace brass with different materials. The analysis conducted aims to be transferable to peer fashion companies in Italy and beyond, favouring the spread of Life Cycle based methodologies.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101313"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145925672","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

Hydrogen peroxide-based oxidation and pH-controlled precipitation for the recovery of non-cerium rare earth elements from permanent magnet waste 以过氧化氢为基础的氧化- ph控制沉淀法从永磁体废料中回收非铈稀土元素

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2025-12-13 DOI: 10.1016/j.cscee.2025.101307

Jose Luis Aldana, Jokin Hidalgo, Carmen del Rio, Javier Antoñanzas

{"title":"Hydrogen peroxide-based oxidation and pH-controlled precipitation for the recovery of non-cerium rare earth elements from permanent magnet waste","authors":"Jose Luis Aldana, Jokin Hidalgo, Carmen del Rio, Javier Antoñanzas","doi":"10.1016/j.cscee.2025.101307","DOIUrl":"10.1016/j.cscee.2025.101307","url":null,"abstract":"<div><div>This case study presents a sustainable and scalable process for the recovery of non-cerium rare earth elements (non-Ce REE) from end-of-life neodymium–iron–boron (NdFeB) permanent magnets. The method involves the selective precipitation of cerium using hydrogen peroxide at pH 5.5 and a NaOH/REE weight ratio between 0.41 and 0.45. Under these conditions, cerium was effectively removed from the leachate with a precipitation yield exceeding 99 wt%. The resulting cerium-based precipitate was calcined at 900 °C, and subsequent leaching in 1 M HCl enabled the recovery of non-Ce REE, including neodymium, praseodymium, gadolinium and dysprosium, with a maximum recovery rate of 97.9 wt%. The cerium content in the final product was controlled between 0.07 wt% and 2.1 wt% by adjusting the precipitation temperature, allowing for the production of two distinct rare earth oxide streams. The process was validated using real leachates obtained from the recycling of industrial magnet waste, demonstrating its applicability in real-world scenarios. The use of environmentally benign reagents and well-established unit operations supports the industrial feasibility and environmental sustainability of the proposed method. The results highlight the potential of this approach for the recovery of critical raw materials in line with circular economy and decarbonisation goals, offering a viable solution for the sustainable management of rare earth resources in industrial recycling contexts.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101307"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145790615","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

Influence of hedge bamboo moisture content on wood vinegar quality in a direct-heated gasifier-burner-kiln system 直接加热气化炉-燃烧器-窑炉系统中竹篱含水率对木醋品质的影响

Case Studies in Chemical and Environmental Engineering Pub Date : 2026-06-01 Epub Date: 2026-03-04 DOI: 10.1016/j.cscee.2026.101361

Nathawat Unsomsri , Kumphol Thaworn , Patchara Koedthong , Songkran Wiriyasart , Parkpoom Sriromreun , Sommas Kaewluan

{"title":"Influence of hedge bamboo moisture content on wood vinegar quality in a direct-heated gasifier-burner-kiln system","authors":"Nathawat Unsomsri , Kumphol Thaworn , Patchara Koedthong , Songkran Wiriyasart , Parkpoom Sriromreun , Sommas Kaewluan","doi":"10.1016/j.cscee.2026.101361","DOIUrl":"10.1016/j.cscee.2026.101361","url":null,"abstract":"<div><div>This study investigates a direct-heated gasifier-burner-kiln system in which high-temperature hot gas is supplied directly to a charcoal kiln adapted from a reused 200 L drum for carbonizing hedge bamboo. The effect of feedstock moisture content was examined using bamboo with three moisture levels (10%, 20%, and 30%). Product yield, quality, and energy performance were evaluated for biochar, wood vinegar, and pyrolysis gas (non-condensable gas). Increasing moisture content significantly prolonged processing time, from 225 min at 12.5 wt% to 365 min at 30.3 wt%. Biochar yield and energy yield decreased slightly, while fixed carbon content increased (83.0-85.2 wt%) and volatile matter declined, with biochar maintaining a high LHV of 31.6–31.9 MJ kg<sup>−1</sup>. Electrical properties shifted toward higher conductivity, as low-resistivity biochar increased markedly at higher moisture levels. Wood vinegar quality met Thai standards at all conditions (pH 2.6-2.9), supporting 30 wt% as a practical upper moisture limit. However, higher moisture reduced non-condensable gas quality and combustion completeness. Overall, the proposed system demonstrates effective bamboo waste valorization with improved heat utilization and controlled product quality.</div></div>","PeriodicalId":34388,"journal":{"name":"Case Studies in Chemical and Environmental Engineering","volume":"13 ","pages":"Article 101361"},"PeriodicalIF":0.0,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147384803","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