scholarly journals Best practice for bio-waste collection as a prerequisite for high-quality compost

2021 ◽  
pp. 0734242X2110337
Author(s):  
Henning Friege ◽  
Yasmin Eger

Due to its high content of humic substances, compost from bio-waste improves the structure and fertility of soils serving also as a sink for CO2. But compost is also contaminated with numerous compounds, for example, plastics, glass particles, etc., mostly due to incorrect sorting by the waste producer, that is, households. The contamination even increases when covering areas of a high population density as is also evident from experience in Germany with a steadily increasing proportion of bio-waste. Only compost with high quality and minimum contamination is an acceptable fertilizer. A structured interview of experts investigated which measures or combinations of measures are best suitable to reduce the rate of misplaced materials in the organic waste. Only responsible persons were interviewed whose municipalities extensively collect separately bio-waste since years and have a low rate of unwanted materials. The questions focus on the identification of the misplacements according to their kind and quantity, the respective collection system, the regional statutes and their enforcement as well as the kind and extent of public awareness measures. The respective necessary measures are being discussed. This systemic approach can be transferred to other regions that intend to collect large quantities of bio-waste separately.

Author(s):  
Emmanuel I. Umegbolu

Background: E-waste, is the waste generated from used electrical and electronic devices that are no longer fit for their original intended use. Currently e-waste comprises more than 5% of total municipal waste flow, equivalent to 20-50 million tonnes annually worldwide. In 2014, Nigeria generated about 219 kilo tonnes of e-waste. The study aimed to increase public awareness on the need for proper management of e-waste because of its hazardous nature.Methods: This was a cross-sectional study in Enugu West Senatorial District of Enugu State comprising Oji-River, Ezeagu, Udi, Awgu and Aninri Local Government Areas with a population of 980,988. An adaptation of the UNEP, EMPA and Basel convention questionnaire, administered to 400 households was used for data collection.Results: The potential e-waste generation in the study area was 0.05 kg per inhabitant. 76% of the households were aware of the hazards of e-waste. 64% were willing to give out their e-waste to waste collectors. Only 26% of the e-waste were collected with the general waste. The correlation between awareness of the hazards of e-waste and willingness of the households to give out their e-waste was positive, moderate, and insignificant (r= 0.43, p=0.47).Conclusions: Although 76 per cent of the households were aware of the hazards of e-waste, with 64% willing to give out their e-waste, only 26% of the e-waste were eventually collected together with the general waste. There is a need to create a separate e-waste collection system.


Author(s):  
Pranas Baltrėnas ◽  
Audronė Jankaitė ◽  
Ervinas Raistenskis

The today's world faces a rapid increase of population and thus a growing amount of generated waste. Unsorted municipal waste is transported to landfills. The negative environmental impact of a landfill is related with generated odours, polluted leachate and waste itself. Most of present landfills do not meet minimal environmental and sanitary requirements, i e most of landfills do not have an installed leachate collection system. In Lithuania waste management is related with many problems. The municipal waste collection system is inefficient, and the equipment is outdated. Large amounts of recyclable waste materials mixed with other wastes are still disposed in landfills. Aiming to use anaerobic digestion technologies for organic waste and minimize their negative environmental impact, recyclables need to be separated. The paper gives information about experimental investigation with fruit, vegetable and meat waste humidified with addition of moisture to 75 %, 79 % and 85 %. The experiment lasted for 60 days, and the concentration of methane and oxygen as well as temperature changes in vessels were observed. The results showed that in 50 l containers of mixed waste set with moisture to 85 % higher amounts of methane were produced than in those humidified with less water.


Author(s):  
Edian F Franco ◽  
Wilfredo Padrón Iglesia ◽  
Karina Pérez Teruel

One of the biggest problems that the Dominican Republic has had in recent decades is the efficient management of solid waste produced by the population. This problem has worsened in recent years due to the decrease in available areas for the construction of sanitary landfills, the lack of recycling culture in the population, the deficiency in waste collection, and the scarce legal controls aimed at preserving water and air and soil, among other factors. The objective of this study was to explore the management of solid waste by the population and the municipality of Puñal, province of Santiago, to evaluate and analyze the situation and generation of solid waste, municipal solid waste management services, and the attitudes of the population regarding recycling projects and waste management, to evaluate the viability and sustainability of the use organic waste for energy generation. A total of 275 households from 29 localities in the municipality of Puñal were surveyed, which allowed for a significant population sample. According to the results obtained, the most significant type of waste produced by families is organic waste, followed by plastic waste and paper. Of the total organic waste produced in the municipality, 53% of solid waste is disregarded through the municipal waste collection system, while 47% is used as plant fertilizers or animal feed. On the other hand, most households receive the municipal waste collection service and pay for this service. The results of our research show that the implementation of an energy production system based on organic waste would be viable in the municipality of Puñal. However, a more efficient waste collection system would be necessary and the development of programs and projects that allow all households to participate in the system.


2019 ◽  
Author(s):  
Marcelino Jr Lunag ◽  
Jessie C. Elauria ◽  
Juanito D. Burguillos

This study confirms that lack of space due to high population density restricts household members and the barangay to comply with the existing law regarding composting. With these, community involvement in the design stage of compost bin as initial stage was done accordingly. The participants were voluntarily interviewed and were given questionnaires, which was endorsed and approved by barangay committee.


Cancers ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 1424
Author(s):  
Antonio Lopez-Beltran ◽  
Fernando López-Rios ◽  
Rodolfo Montironi ◽  
Sophie Wildsmith ◽  
Markus Eckstein

Immuno-oncology (IO) agents (anti–programmed cell death 1 (PD-1) and anti–programmed cell death-ligand 1 (PD-L1)) are approved as first- and second-line treatments for metastatic UC. PD-L1 expression levels in UC tumors help clinicians determine which patients are more likely to respond to IO therapies. Assays for approved IO agents use different antibodies, immunohistochemical protocols, cutoffs (defining “high” vs. “low” PD-L1 expression), and scoring algorithms. The robust control of pre-analytical and analytical standards is needed to obtain high-quality PD-L1 results. To better understand the status and perspectives of biomarker-guided patient selection for anti–PD-1 and anti–PD-L1 agents in UC, three workshops were held from December 2018 to December 2019 in Italy, Malaysia, and Spain. The primary goal was to develop recommendations for best practice approaches to PD-L1 testing in UC. Recommendations pertaining to the interpretation and reporting of the results of PD-L1 assays from experienced pathologists and oncologists from around the globe are included. A test request form for pathology laboratories was developed as a critical first step for oncologists/urologists to encourage communication between clinicians and pathologists, ensuring fast and high-quality test results. In this era of personalized medicine, we briefly discuss novel biomarkers being evaluated for IO agents in UC.


1998 ◽  
Vol 1998 ◽  
pp. 202-202
Author(s):  
R J Mansbridge ◽  
J S Blake

High yielding cows require high quality diets to sustain milk yields and to minimise weight loss, metabolic disorders and fertility problems. Traditionally, these diets have contained fishmeal and soyabean meal, both widely regarded as good sources of high quality, digestible undegraded protein (DUP). However, there is increasing concern over the sustainability of world fish stocks and the BSE scare has increased public awareness to the extent that feeding animal protein to herbivores may become unacceptable in me future. This in turn has driven up the price of high quality imported vegetable proteins, such as soyabean meal. The aim of this study was to investigate whether fishmeal and soyabean meal could be replaced in the diet of high yielding cows, with protein sources grown in the UKIn a 12 week randomised block design experiment, 60 muciparous Holstein cows, on average 28 days calved at the start of the study, were fed total mixed rations based on grass silage and one of five protein mixtures. These were either 0.5 kg DM fishmeal + 0.7 kg DM soya + 2.5 kg DM rapeseed (PC), 1.3 kg DM soyabean + 2.3 kg DM rapeseed (PI), 3.8 kg DM lupins + 2.3 kg DM heat treated rapeseed (P2), 3.6 kg DM linseed + 1.4 kg DM rapeseed (P3) or 5.8 kg DM rapeseed (P4). Each diet was formulated to supply sufficient energy and metabolisable protein for maintenance + 43 litres and 0.75kg/d weight loss and to contain similiar levels of DUP (AFRC, 1993).


2020 ◽  
Vol 62 (6) ◽  
pp. 631
Author(s):  
Vikas Menon ◽  
Natarajan Varadharajan ◽  
Sharmi Bascarane ◽  
Karthick Subramanian ◽  
MoushumiPurkayastha Mukherjee ◽  
...  

2019 ◽  
Vol 6 (1) ◽  
pp. 22
Author(s):  
Rofidah Tamami ◽  
Sulistia Ningrum Ayu ◽  
Nur Syamsiah ◽  
Lailatul Munadifah

<p>Urban is identical to the high consumptive behavior of the people who will then leave a lot of garbage too. The uncontrolled volume of waste will certainly disrupt the survival of the people who live in that place. Waste itself can be divided into two categories, namely organic waste and inorganic waste, which means that there is still a possibility to be reprocessed. So that the garbage does not interfere with the survival of the community, a waste collection facility or a waste bank is made which will later be collected again at the Final Disposal Site. Research conducted using qualitative methods with a descriptive approach. This research was conducted with the aim to find out how much influence the existence of the Talangagung Kepanjen Final Disposal on the surrounding community's economy. From the results of the study, it was found that the Talangagung Landfill is in addition to being a landfill, as well as an educational tourism site. Besides Talangagung Landfill has economic potential that can help the economy of the surrounding residents.</p><p><strong><em>Keywords: economy; final disposal site; educational tourism</em></strong></p>


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