Denis Nsubuga, Isa Kabenge, Ahamada Zziwa, Vianney Andrew Yiga, Yusufu Mpendo, Mawejje Harbert, Ronald Kizza, Noble Banadda, Kerstin D. Wydra
{"title":"Optimization of adsorbent dose and contact time for the production of jackfruit waste nutrient-enriched biochar","authors":"Denis Nsubuga, Isa Kabenge, Ahamada Zziwa, Vianney Andrew Yiga, Yusufu Mpendo, Mawejje Harbert, Ronald Kizza, Noble Banadda, Kerstin D. Wydra","doi":"10.1007/s42768-022-00123-1","DOIUrl":"10.1007/s42768-022-00123-1","url":null,"abstract":"<div><p>Raw biochar can be enriched with nutrients from digestates through adsorption producing nutrient-enriched biochar. The nutrient-enriched biochar can be used as a soil amendment to support sustainable agriculture. This study assessed the effect of adsorbent dose and contact time on the jackfruit waste biochar adsorption of essential nutrients of nitrogen, phosphors and potassium from the digestate. Response surface methodology (RSM) using central composite design (CCD) was utilized to optimize the adsorbent dose and contact time during the adsorption process. An adsorbent dose of 20–70 mg/g and contact time range of 48–120 h were used in this study. The optimal adsorbent dose and contact time were found to be 20 mg/g and 114.6 h, respectively. The corresponding optimum nitrogen, phosphorus and potassium adsorbed were 17.44, 20.94, and 21.36 mg/g, respectively. Models for the prediction of these values for nitrogen, phosphorus and potassium had <i>R</i><sup>2</sup> values of 0.9801, 0.9804 and 0.9843, respectively, and non-significant lack of fit (<i>p</i><0.05). This indicates the suitability of the models in predicting the adsorption conditions of adsorbent dose and contact time to produce high-quality nutrient-enriched biochar.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"63 - 74"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5472260","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}
Scarlett Allende, Yang Liu, Muhammad Adeel Zafar, Mohan V. Jacob
{"title":"Nitrite sensor using activated biochar synthesised by microwave-assisted pyrolysis","authors":"Scarlett Allende, Yang Liu, Muhammad Adeel Zafar, Mohan V. Jacob","doi":"10.1007/s42768-022-00120-4","DOIUrl":"10.1007/s42768-022-00120-4","url":null,"abstract":"<div><p>Developing applications for the by-products obtained from waste processing is vital for resource recovery. The synthesis of ZnCl<sub>2</sub>-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process. Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode (GCE). The activated biochar exhibited a stacked carbon sheet, 254 m<sup>2</sup> g<sup>−1</sup> Brunauer, Emmett and Teller (BET) surface area, 0.076 cm<sup>3</sup> g<sup>−1</sup> pore volume, 189.53 m<sup>2</sup> g<sup>−1</sup> micropore area and oxygen-containing functional groups. The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%. This is crucial to determine the electrochemical properties of biochar. The sensor showed a significant current response and an excellent limit of detection of 0.97 µmol L<sup>−1</sup>. The modified-activated biochar electrochemical sensor demonstrated high selectivity, reproducibility (RSD=2.4%), and stability (RSD=2.6%).</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"1 - 11"},"PeriodicalIF":0.0,"publicationDate":"2023-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00120-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4680577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuri Schmitke Almeida Belchior Tisi, Flavio Arantes Matos, Maria Luisa N. M. Carneiro
{"title":"Development of waste-to-energy through integrated sustainable waste management: the case of ABREN WtERT Brazil towards changing status quo in Brazil","authors":"Yuri Schmitke Almeida Belchior Tisi, Flavio Arantes Matos, Maria Luisa N. M. Carneiro","doi":"10.1007/s42768-022-00127-x","DOIUrl":"10.1007/s42768-022-00127-x","url":null,"abstract":"<div><p>In the context of circular economy, it is known that once waste is generated, it should be subject to proper treatment for recovering material or energy before being disposed. Many countries worldwide, especially developing countries such as Brazil, have been struggling to effectively apply sustainable waste management in municipalities and still rely on dumpsites and unsuitable landfills. Misinformation, a weak legal framework, lack of financial resources and poor infra-structure as well as pressure from organizations profiting from the expansion of landfills are some factors contributing to the preservation of the negative status quo: the “landfill culture”. Material recovery, i.e., recycling and composting, is applied to less than 5% of Brazilian municipal waste, while 95% is disposed of in landfills or dumpsites. In this context, ABREN WtERT (Waste-to-Energy Research and Technology Council) Brazil was created in 2019 as the first permanent organization formed to promote the development of energy and material recovery from waste focused on the waste-to-energy (WTE) market. In this paper, the strategy proposed and implemented by the organization towards changing the status quo in Brazil through an integrated sustainable waste management approach is described. The proposed strategy integrates the concepts of Sustainability and Circular Economy for minimizing landfill disposal (avoiding methane emissions) and maximizing material/energy recovery. Among others, the approach focuses on changing the public opinion regarding thermal treatment facilities, mainly incinerators, which has been wrongly linked to pollution, excessive public expenditures and considered a harm to the recycling industry. The activities performed by ABREN include engaging public and private institutions, enhancing education, leading the publication of research and business studies, gathering industry members and academy experts, as well as creating strategic alliances with players around the globe. As a result, within a few years, major outcomes were achieved in Brazil, such as: (i) changes in the legal framework, (ii) launching of a specific public auction category for sponsoring electricity production from WTE facilities, and (iii) establishment of official targets for municipalities to decrease landfill disposal and increase recycling/biological treatment and energy recovery from thermal treatment. Among the national goals, it should be highlighted the target regarding the increase from zero to 994 MW of electricity production from municipal solid waste, which will require building dozens of new WTE facilities. Global outcomes are expected as well since Brazil is the seventh largest country of the globe and the most influential in Latin America. International and national business deals should thrive due to the need of operational skills and technology imports, and the avoidance of carbon emissions will positively reflect the world climate. In parallel, there is also","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 3","pages":"295 - 308"},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00127-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10588365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bruna Cristina Pinto, Adriana Barboza Alves, Osania Emerenciano Ferreira, Gustavo Henrique Gravatim Costa, Magno André de Oliveira, Augusto Cesar da Silva Bezerra, Alan Rodrigues Teixeira Machado
{"title":"Biochar influences the cane fields’ microbiota and the development of pre-sprouted sugarcane seedlings","authors":"Bruna Cristina Pinto, Adriana Barboza Alves, Osania Emerenciano Ferreira, Gustavo Henrique Gravatim Costa, Magno André de Oliveira, Augusto Cesar da Silva Bezerra, Alan Rodrigues Teixeira Machado","doi":"10.1007/s42768-022-00129-9","DOIUrl":"10.1007/s42768-022-00129-9","url":null,"abstract":"<div><p>This research investigates the soil conditioning effect of sugar cane fields with biochar produced from sugarcane bagasse. Its influence on the physicochemical and microbiological conditions of the soil and the agronomic performance of sugarcane seedlings was verified. To this end, the biochar from sugarcane bagasse was produced by pyrolysis in a double drum oven and mixed with soil at rates of 0, 1%, 3%, and 5% (in weight). The experiment was installed in a greenhouse with two evaluation periods (30 days and 60 days) and five replicates. Each pot received a pre-sprouted cane seedling, and the analysis of colony-forming units (bacteria and fungi), physicochemical characteristics of the soil, and growth and development of sugarcane were performed per pot. The biochar showed a high fixed carbon content (72%) and a specific surface area estimated by the adsorption of methylene blue of 50 m<sup>2</sup> g<sup>−1</sup>. Furthermore, its structure is porous and contains important nutrients (e.g., CaO, K<sub>2</sub>O, and P<sub>2</sub>O<sub>5</sub>). In the periods evaluated, the applications of the 3% and 5% (in weight) rates of biochar reduced most of the soil fertility parameters. However, the chemical analyses indicated that the sugarcane field soil collected already possessed high fertility. The microbiota was influenced, but only the application of the 3% (in weight) rate at 60 days after planting showed a significant positive effect on the number of bacteria forming units, with an increase of approximately 385%. On the other hand, no significant positive effect on sugarcane development was found. Therefore, biochar application in high-fertility sugarcane plantation soil did not result in gains for sugarcane development in the periods evaluated.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"75 - 88"},"PeriodicalIF":0.0,"publicationDate":"2023-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4502894","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}
Qiqi Huang, Siqi Chen, Jinhao Lin, Jingzi Beiyuan, Jin Wang, Juan Liu, Yundang Wu, Xiaolian Wu, Fuhua Li, Wenbing Yuan, Chengrong Nie
{"title":"Stability of potentially toxic elements in municipal sludge biochars modified by MgCl2 and phosphate","authors":"Qiqi Huang, Siqi Chen, Jinhao Lin, Jingzi Beiyuan, Jin Wang, Juan Liu, Yundang Wu, Xiaolian Wu, Fuhua Li, Wenbing Yuan, Chengrong Nie","doi":"10.1007/s42768-022-00128-w","DOIUrl":"10.1007/s42768-022-00128-w","url":null,"abstract":"<div><p>Municipal wastewater sludge can be pyrolyzed as biochars to better use nutrients and stabilize carbon compared with other typical technologies, such as landfill and incineration. However, sludge-derived biochars might contain large amounts of potentially toxic elements (PTEs), such as Zn, Cu, Cr, Ni, Pb, and As. The stability of PTEs in biochars might be improved by higher pyrolytic temperatures, which can be further improved by different modifications. Herein, PO<sub>4</sub>-modification at 300 °C and Cl-modification at 700 °C were carried out, respectively, to enhance the stability of PTEs. Various leaching tests have been performed to assess the stability of PTEs in biochars, including the synthetic precipitation leaching procedure (SPLP), toxicity characteristic leaching procedure (TCLP), diethylenetriamine pentaacetate (DTPA) extraction, and in vitro simple bioaccessibility extraction test (SBET). The morphological structure, elemental mapping, and mineral formation of the pristine and modified biochars were studied by scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM–EDS) and X-ray diffraction (XRD). Our results suggested that the leachability, mobility, plant-availability, and bioaccessibility of most PTEs were decreased by pyrolysis, yet the total contents of PTEs were elevated, especially at 700 °C. Generally, modification by phosphates and MgCl<sub>2</sub> enhanced the stability of PTEs in biochars. Nevertheless, it should be noted that higher bioaccessibility of PTEs was observed in biochars of P-modification than Cl-modification, which is associated with the dissolution of phosphate precipitates under acidic conditions (pH<2). Additionally, Cl-modification leads to higher plant-available Zn and Cu and bioaccessible Zn compared with the unmodified biochar produced at 700 °C.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"13 - 23"},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5394584","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}
Jiamin Ding, Zike Qiu, Hanting Huang, Changming Du
{"title":"Research on the treatment of sludge drying gas spray wastewater using discharge free radicals","authors":"Jiamin Ding, Zike Qiu, Hanting Huang, Changming Du","doi":"10.1007/s42768-022-00121-3","DOIUrl":"10.1007/s42768-022-00121-3","url":null,"abstract":"<div><p>Wastewater from the spray absorption treatment of sludge drying gas is a kind of refractory wastewater with poor biodegradability. In this study, the free radicals generated from the double dielectric barrier were innovatively used for the degradation of simulated spray wastewater. The effects of residence time, input power, initial pH, aeration rate, and discharge area on the degradation rate and COD (chemical oxygen demand) removal rate were investigated. The optimal conditions were as follows: residence time=120 min, input power=170.0 W, initial pH=5.54, aeration rate=0.9 mL/min, discharge area=10.8 cm<sup>2</sup>, and the initial concentrations of NH<sub>3</sub>, H<sub>2</sub>S, methanethiol, trimethylamine, benzene and toluene were 250, 250, 50, 50, 50 and 100 mg/L, respectively. Meanwhile, it was also found that hydroxyl radical <span>(left( { cdot {text{OH}}} right))</span> played an important role in the degradation process.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"4 4","pages":"297 - 309"},"PeriodicalIF":0.0,"publicationDate":"2022-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00121-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4890624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Density functional theory for selecting modifiers for enhanced adsorption of tetracycline in water by biochar","authors":"Sayeda Ummeh Masrura, Tauqeer Abbas, Hamed Heidari, Shams Razzak Rothee, Ahsan Javed, Eakalak Khan","doi":"10.1007/s42768-022-00125-z","DOIUrl":"10.1007/s42768-022-00125-z","url":null,"abstract":"<div><p>Antibiotics and their metabolic byproducts are found in wastewater and natural water as a result of increased consumption, posing a major threat to humans and other living organisms. One of the most promising methods for their removal is adsorption using biochar because it offers excellent adsorption potential and is both affordable and environmentally beneficial. However, raw biochar frequently has a low adsorption capacity due to its limited pore structure and unfavorable surface characteristics. Biochar surface modifications using modifiers such as H<sub>3</sub>PO<sub>4</sub>, KOH, and NaOH have improved the surface area and thereby the adsorption capacity. Experimental methods for assessing the effectiveness and adsorption mechanism of modified biochar are costly and time-consuming. Density functional theory (DFT) was used to investigate the interfacial interactions and adsorption mechanism of tetracycline (TC), a widely used antibiotic for personal care and veterinary medication, on unmodified and modified biochar. The DFT calculations showed that the adsorption energy of TC on unmodified and modified biochar is in the following order: KOH-modified biochar (− 2.38 eV)<NaOH-modified biochar (− 2.20 eV)<unmodified biochar (− 1.56 eV)<H<sub>3</sub>PO<sub>4</sub>-modified biochar (5.48 eV). The lower adsorption energy is associated with a stronger and more stable interaction between the adsorbent and the contaminant. This suggests that the adsorption of TC on KOH-modified biochar is more prolific and stable compared to the other biochar. This study provides an understanding of the mechanism underlying the adsorption of TC by modified biochar and can be used as a guide to screen for biochar with promising adsorption potential prior to experimental efforts.</p><h3>Graphical abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"25 - 35"},"PeriodicalIF":0.0,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5151495","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}
{"title":"Biochar-mediated removal of pharmaceutical compounds from aqueous matrices via adsorption","authors":"Sahil Chauhan, Tajamul Shafi, Brajesh Kumar Dubey, Shamik Chowdhury","doi":"10.1007/s42768-022-00118-y","DOIUrl":"10.1007/s42768-022-00118-y","url":null,"abstract":"<div><p>Pharmaceutical is one of the noteworthy classes of emerging contaminants. These biologically active compounds pose a range of deleterious impacts on human health and the environment. This is attributed to their refractory behavior, poor biodegradability, and pseudopersistent nature. Their large-scale production by pharmaceutical industries and subsequent widespread utilization in hospitals, community health centers, and veterinary facilities, among others, have significantly increased the occurrence of pharmaceutical residues in various environmental compartments. Several technologies are currently being evaluated to eliminate pharmaceutical compounds (PCs) from aqueous environments. Among them, adsorption appears as the most viable treatment option because of its operational simplicity and low cost. Intensive research and development efforts are, therefore, currently underway to develop inexpensive adsorbents for the effective abatement of PCs. Although numerous adsorbents have been investigated for the removal of PCs in recent years, biochar-based adsorbents have garnered tremendous scientific attention to eliminate PCs from aqueous matrices because of their decent specific surface area, tunable surface chemistry, scalable production, and environmentally benign nature. This review, therefore, attempts to provide an overview of the latest progress in the application of biochar for the removal of PCs from wastewater. Additionally, the fundamental knowledge gaps in the domain knowledge are identified and novel strategic research guidelines are laid out to make further advances in this promising approach towards sustainable development.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"5 1","pages":"37 - 62"},"PeriodicalIF":0.0,"publicationDate":"2022-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00118-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4643550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An approach for selection of solid waste treatment and disposal methods based on fuzzy analytical hierarchy process","authors":"Amarjeet Kumar, Atul Sharma, Nekram Rawal","doi":"10.1007/s42768-022-00117-z","DOIUrl":"10.1007/s42768-022-00117-z","url":null,"abstract":"<div><p>Solid waste management is a severe challenge in India due to massive and rapid growth in waste generation rates, environmental difficulties, and financial constraints for proper treatment. Poorly managed municipal solid waste (MSW) has substantial negative consequences for society, including financial and aesthetic harm, contamination of natural resources, environmental pollution, and severe health danger. Both qualitative and quantitative factors are required to select the appropriate solid waste treatment and disposal technologies. Multi-Criteria decision-making tools helped in analyzing solid waste in terms of qualitative and quantitative factors. In this paper, seven criteria and their sub-criteria are selected for ranking solid waste treatment and disposal technology using fuzzy-analytic hierarchy process. The results showed that composting is the most suitable option for solid waste treatment and disposal technology, followed by refuse-derived fuel. The incineration and sanitary landfills are the least preferred MSW management alternatives. The sensitivity analysis reveals a high consistency, robustness, and stability level.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"4 4","pages":"311 - 322"},"PeriodicalIF":0.0,"publicationDate":"2022-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42768-022-00117-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5093972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kew Kiong Kong, Peter Nai Yuh Yek, How Sing Sii, Man Djun Lee, Rock Keey Liew, Su Shiung Lam
{"title":"Microwave physicochemical activation: an advanced approach to produce activated biochar for palm oil mill effluent treatment","authors":"Kew Kiong Kong, Peter Nai Yuh Yek, How Sing Sii, Man Djun Lee, Rock Keey Liew, Su Shiung Lam","doi":"10.1007/s42768-022-00115-1","DOIUrl":"10.1007/s42768-022-00115-1","url":null,"abstract":"<div><p>Empty fruit bunch (EFB) is an industrial waste that is abundantly available in Malaysia. Traditionally, EFBs were burned and dumped on the plantation site, resulting in global warming pollution from methane and carbon dioxide. In this study, the EFB was transformed into a high-surface area of activated biochar through a microwave physicochemical approach involving the combination of steam followed by a hydroxide mixture for palm oil mill effluent (POME) treatment. It was found that BET (Brunauer–Emmett–Teller) surface area and total pore volume of activated biochar were 365.60 m<sup>2</sup>/g and 0.16 cm<sup>3</sup>/g, respectively. The surface morphology of activated biochar revealed the formation of well-developed pores that can potentially be used as adsorbents to treat POME. The removal efficiency of biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of POME achieved 75%–55%, respectively. This study offers insight into the transformation of industrial waste into value-added products for sustainable environmental remediation.</p></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"4 4","pages":"323 - 333"},"PeriodicalIF":0.0,"publicationDate":"2022-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4511297","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}