scholarly journals Biosorption of Pb(II) Using Coffee Pulp as a Sustainable Alternative for Wastewater Treatment

2021 ◽  
Vol 11 (13) ◽  
pp. 6066
Author(s):  
Dora Luz Gómez-Aguilar ◽  
Juan Pablo Rodríguez-Miranda ◽  
Deisy Baracaldo-Guzmán ◽  
Octavio José Salcedo-Parra ◽  
Javier Andrés Esteban-Muñoz
Keyword(s):  
Wastewater Treatment ◽  
Agricultural Waste ◽  
Green Technology ◽  
Point Of Zero Charge ◽  
Cellulose Content ◽  
The Sustainable Development ◽  
Coffee Pulp ◽  
Biosorption Process ◽  
Optimum Ph ◽  
Development Goals

The present research shows the results obtained from the biosorption process of Pb, using coffee pulp as a biosorbent in synthetic waters. To do this, the lignin and cellulose content and the percentage of removal of Pb2+ ions was determined; additionally, the sorption’s optimal variables, such as the optimum pH, the point of zero charge (pHpzc), the kinetics and the adsorption isotherm, were determined. A comparison was made with other by-products derived from coffee crops. According to the results obtained in this research, the cellulose percentage was 29.12 ± 0.22% and the lignin percentage was 19.25 ± 0.16% in the coffee pulp, the optimum pH was 2.0 units and the kinetic model, which adjusted to the biosorption’s process, was the pseudo-second order of Ho and McKay, presenting an isotherm of Langmuir’s model and pHpzc of 3.95 units. Lastly, the removal of the pollutant was 86.45%, with a capacity of maximum adsorption of 24.10 mg·g−1 obtained with a particle size of 180 µm, time of contact of 105 min and at 100 RPM. Finally, we express that (a) the coffee pulp can be used as a sustainable alternative for the removal of the pollutant mentioned in synthetic and/or industrial wastewater matrices, to meet goals 3.9 and 6.9 of the Sustainable Development Goals of the 2030 agenda, and (b) the novelty of this research is the use of an agricultural waste of easy acquisition as a sorbent, without chemical modification, since it presented a high percentage of efficiency in the removal of Pb2+ ions. In turn, the challenge of this research is implementing this green technology on a pilot, semi-industrial and/or industrial scale in wastewater treatment systems.

scholarly journals Removal of Zn(II) in Synthetic Wastewater Using Agricultural Wastes

Metals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1465
Author(s):  
Dora Luz Gómez Aguilar ◽  
Juan Pablo Rodríguez Miranda ◽  
María Xóchitl Astudillo Miller ◽  
Rayma Ireri Maldonado Astudillo ◽  
Javier Andrés Esteban Muñoz
Keyword(s):  
Agricultural Waste ◽  
Green Technology ◽  
Agricultural Wastes ◽  
Synthetic Wastewater ◽  
Point Of Zero Charge ◽  
Maximum Adsorption Capacity ◽  
The Sustainable Development ◽  
Coffee Pulp ◽  
Optimum Ph ◽  
Linearized Model

In the present investigation, results obtained from the process of the biosorption of Zn(II) in synthetic wastewaters are presented, using three agricultural wastes (coffee pulp, banana pseudo-stem, and corncob). Firstly, the percentage of lignin and cellulose for each material was determined. Then, using the free software XLSTAT, the waste with the highest removal for this metal was selected and, after this, the optimum pH, kinetics, adsorption isotherm, and point of zero charge (pHpzc) were found. Finally, a comparison with other lignocellulosic materials derived from banana, corn, and coffee crops was carried out. According to the results obtained, coffee pulp was the material that showed a high removal compared to the other two (63.58%), for which the optimum pH was 5.0 units. The kinetic model, which was adjusted to the process of biosorption, was the pseudo second order of Ho and McKay, which in turn presented an isotherm of Langmuir’s linearized model where the maximum adsorption capacity with that waste was 13.53 mg × g−1, obtained with a particle size of 180 µm, contact time of 90 min at 100 RPM, temperature of 25 °C, and pHpzc 3.95 units. Lastly, the authors state that this type of agricultural waste can be used as a green technology in the treatment of wastewater, particularly in the removal of the aforementioned pollutant, in order to fulfill goals 3.9 and 6.9 of the Sustainable Development Goals of the 2030 Agenda; to the level of challenge of the research, the authors propose for the future to carry out the implementation of this type of waste, without chemical modification, in the treatment of wastewater for the removal of the mentioned pollutant in a pilot study with different wastewaters and industries.

scholarly journals Using Coffee Pulp as Bioadsorbent for the Removal of Manganese (Mn (II)) from Synthetic Wastewater

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2500 ◽  
Author(s):  
Dora Luz Gómez Aguilar ◽  
Juan Pablo Rodríguez Miranda ◽  
Deisy Baracaldo Guzmán ◽  
Javier Andrés Esteban Muñoz
Keyword(s):  
Heavy Metals ◽  
Lignin Content ◽  
Attenuated Total Reflection ◽  
Synthetic Wastewater ◽  
Maximum Adsorption Capacity ◽  
Cellulose Content ◽  
The Sustainable Development ◽  
Coffee Pulp ◽  
Adsorption Mechanisms ◽  
Optimum Ph

This research focuses on the removal of contaminants from wastewaters as a matter of great interest in the field of water pollution. The first decades of the 21st century have brought numerous approaches for the development of cheaper and more effective adsorbents capable of eliminating heavy metals. The study aims to examine the way coffee pulp (Castilla variety from Caldas, Colombia) was used as a bioadsorbent for the removal of Mn (II) from synthetic wastewater to fulfill goals 3 and 6 proposed in the Sustainable Development Goals stated for the 2030 Agenda, particularly in Sections 3.9 and 6.9. In order to achieve this objective, the agricultural residue was subjected to bromatological characterization, determination of the lignocellulosic composition, and identification of characteristic organic functional groups through IR spectrophotometry, using the ATR (attenuated total reflection) technique. Additionally, the optimal parameters for contaminant removal were identified, regarding the biomass quantity, the optimum pH, the stirring time, the adsorption kinetics, the zero charge potential (pHpzc), the adsorption isotherms, and the explanation of the possible adsorption mechanisms between the contaminant, the surface of the coffee pulp, and the capacity of maximum adsorption. The results show that lignocellulosic material presented a cellulose content of 29.93 ± 0.21% and a lignin content of 19.25 ± 0.16%. The optimum parameters found were as follows: Particle size of 180 µm, contact time from 90 min to 100 RPM, optimum pH of 4.0 pH units, room temperature; the kinetic model adjusted to the bioadsorption process was Ho and McKay’s pseudo-second-order, under an isotherm of the Langmuir model, for which the removal presented was 53.40%, with a maximum adsorption capacity of 8.01 mg·g−1. Finally, the novelty of the reported research consists of using coffee pulp as a bioadsorbent without chemical modification, for the removal of heavy metals, in this case Mn (II), in industrial wastewater, which would be another application of this coffee by-product.

scholarly journals Coffee Pulp: A Sustainable Alternative Removal of Cr (VI) in Wastewaters

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 403 ◽  
Author(s):  
Dora Luz Gómez Aguilar ◽  
Juan Pablo Rodríguez Miranda ◽  
Javier Andrés Esteban Muñoz ◽  
Jhon Fredy Betancur P.
Keyword(s):  
Agricultural Waste ◽  
Chemical Species ◽  
Maximum Adsorption Capacity ◽  
The Sustainable Development ◽  
Coffee Pulp ◽  
Charge Potential ◽  
Removal Of Heavy Metals ◽  
Stirring Time ◽  
Ir Spectrophotometry ◽  
Development Goals

Currently, agricultural waste is proposed as a sustainable alternative in the removal of heavy metals present in industrial wastewater, to fulfill some of the goals proposed in the Sustainable Development Goals stated for the 2030 Agenda, in particular in Sections 3.9 and 6.9. Considering this context, the coffee pulp (Castilla variety) of Caldas municipality (Colombia) was used in study for the removal of one of the most toxic chemical species of chromium: Cr (VI). Therefore, the agricultural residue was subjected to a bromatological characterization, determination of the lignocellulosic composition and elucidation of characteristic organic functional groups by IR spectrophotometry. Additionally, the optimal parameters for contaminant removal were identified, regarding particle size, biomass quantity, optimum pH, stirring time, temperature, adsorption kinetics, zero charge potential (pHpzc) and adsorption isotherms, to analyze the kinetic model that fitted the process, the explanation of the possible adsorption mechanism between the contaminant, the surface of the coffee pulp and the capacity of maximum adsorption, respectively. Finally, the innovation of the research is discussed considering two criteria: First, when a mixture was made in different proportions between two agricultural residues (coffee pulp and plantain pseudostem) to show if there was an increase in the removal of the contaminant under the same optimal conditions found experimentally; and the second criterion, the comparison of the maximum adsorption capacity, with the percentages of removal carried out by other authors using the pulp of unmodified coffee.

scholarly journals Creating regional infrastructure in the special economic zones of the Russian Federation to address the challenges of the Sustainable Development Goals

2021 ◽  
Vol 296 ◽  
pp. 06036
Author(s):  
Elena Knyazeva ◽  
Denis Zheriborov
Keyword(s):  
Sustainable Development ◽  
Wastewater Treatment ◽  
Water Use ◽  
Russian Federation ◽  
Sustainable Development Goals ◽  
Human Life ◽  
Water Desalination ◽  
The Sustainable Development ◽  
Development Goals ◽  
The Russian Federation

Water resources are an integral part of energy, industry, food and human life. Water efficiency is given a special place in the area of achieving the Sustainable Development Goals (SDGs) promoted by the United Nations (UN). Water is used everywhere in everyday life and in the manufacture of products, which leads to the depletion of the water potential of a country or an entire continent. Currently, companies are actively introducing new standards for water use, keeping records of water consumption, applying innovative technologies to provide water desalination and wastewater treatment. There is a shortage of drinking water in the world, especially in overpopulated countries and the southern regions of the planet. No state can solve water use issues on its own. Currently, countries are focusing on developing technologies for desalination and wastewater treatment plants. These industries are science-intensive, innovative and require raw materials, financial resources and policy favors from the states. On the territory of the Sverdlovsk region of the Russian Federation, all known types of common minerals were found, and a special economic zone the “Titanium Valley” also operates on this territory.

scholarly journals Pembangunan Air Bersih dan Sanitasi saat Pandemi Covid-19

2020 ◽  
Vol 11 (2) ◽  
pp. 199-214
Author(s):  
Anih Sri Suryani
Keyword(s):  
Sustainable Development ◽  
Drinking Water ◽  
Wastewater Treatment ◽  
Qualitative Methods ◽  
Sustainable Development Goals ◽  
Clean Water ◽  
Open Defecation ◽  
The Sustainable Development ◽  
Sanitation Services ◽  
Development Goals

Sanitation development in Indonesia refers to the Sustainable Development Goals, which in 2030 is targeted to ensure the availability and management of clean water and sustainable sanitation for all. The existence of the Covid-19 pandemic has made the clean water and sanitation sector very important in breaking the Covid-19 chain. This paper aims to describe the achievement of sanitation development targets in Indonesia and examine the empirical practice of implementing sanitation during the Covid-19 pandemic. Qualitative methods are used to assess the sanitation sector according to the sixth SDGs Target, namely: clean water and proper sanitation both before the pandemic and during the pandemic. The results of the study show that until 2019, before the pandemic, access to drinking water, wastewater, and sanitation services had been achieved quite well. However, the reduction in open defecation (BABS) and the improvement of clean and healthy living behavior (PHBS) have not been optimal. When the Covid-19 pandemic consumption of clean water increases, attention to wastewater treatment increases, and there are changes in people's behavior to live cleaner lives.AbstrakPembangunan sanitasi di Indonesia mengacu pada Sustainable Development Goals di mana pada tahun 2030 ditargetkan dapat menjamin ketersediaan serta pengelolaan air bersih dan sanitasi yang berkelanjutan untuk semua. Adanya pandemi Covid-19  menjadikan sektor  air  bersih dan sanitasi sangatlah penting dalam memutus mata rantai Covid-19. Tulisan ini bertujuan untuk menggambarkan capaian target pembangunan sanitasi di Indonesia dan mengkaji praktik empiris penyelenggaraan sanitasi pada saat pandemi Covid-19. Metoda kualitatif digunakan untuk mengkaji sektor sanitasi sesuai dengan Target SDGs keenam, yaitu: air bersih dan sanitasi layak, baik sebelum pandemi maupun saat pandemi. Hasil kajian menunjukkan bahwa hingga 2019, sebelum pandemi akses terhadap air minum, air limbah dan layanan sanitasi telah tercapai dengan cukup baik. Namun penurunan praktik Buang Air Besar Sembarangan (BABS) dan peningkatan Perilaku Hidup Bersih dan Sehat (PHBS) belum optimal. Saat pandemi Covid-19 konsumsi air bersih meningkat, perhatian pada pengolahan air limbah meningkat, dan ada perubahan perilaku masyarakat untuk hidup lebih bersih.

History, Heritage and Sustainable Development: A Position Statement on the Scottish Highlands

2018 ◽  
Vol 9 (1) ◽  
pp. 1-16
Author(s):  
S. Karly Kehoe ◽  
Chris Dalglish
Keyword(s):  
Sustainable Development ◽  
Rural Communities ◽  
Position Statement ◽  
The Sustainable Development ◽  
Scottish Highlands ◽  
The Past ◽  
Taking Charge ◽  
Rural World ◽  
Development Goals ◽  
Crucial Part

Evidence of how history and culture have been or should be harnessed to promote sustainability in remote and rural communities is mounting. To be sustainable, development must come from within, it must serve future generations as well as those in the present and it must attend to the vitality of culture, society, the economy and the environment. Historical research has an important contribution to make to sustainability, especially if undertaken collaboratively, by challenging and transcending the boundaries between disciplines and between the professional researchers, communities and organisations which serve and work with them. The Sustainable Development Goals’ motto is ‘leaving no one behind’, and for the 17 Goals to be met, there must be a dramatic reshaping of the ways in which we interact with each other and with the environment. Enquiry into the past is a crucial part of enabling communities, in all their shapes and sizes, to develop in sustainable ways. This article considers the rural world and posits that historical enquiry has the potential to deliver insights into the world in which we live in ways that allow us to overcome the negative legacies of the past and to inform the planning of more positive and progressive futures. It draws upon the work undertaken with the Landscapes and Lifescapes project, a large partnership exploring the historic links between the Scottish Highlands and the Caribbean, to demonstrate how better understandings of the character and consequences of previous development might inform future development in ways that seek to tackle injustices and change unsustainable ways of living. What we show is how taking charge of and reinterpreting the past is intrinsic to allowing the truth (or truths) of the present situation to be brought to the surface and understood, and of providing a more solid platform for overcoming persistent injustices.

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