INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
ISSN No. 2321-2705 | DOI: 10.51244/IJRSI |Volume XII Issue VIII August 2025
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An Analysis of Waste Management Practices in Selected Buffet
Restaurants in Quezon City, Philippines
Dr. Loida Royo Banzuelo
Graduate School, Eulogio Amang Rodriguez, Institute of Science and Technology, Philippines
DOI: https://doi.org/10.51244/IJRSI.2025.120800180
Received: 13 Aug 2025; Accepted: 19 Aug 2025; Published: 18 September 2025
ABSTRACT
Buffet restaurants have become a popular dining choice in Quezon City, offering customers a wide variety of
dishes in an unlimited-serving format. While this attracts large volumes of patrons daily, it also generates
substantial amounts of waste, particularly food scraps, packaging materials, and kitchen by-products. Effective
waste management in these establishments is criticalnot only for operational efficiency and cost control but
also for environmental sustainability and compliance with the Ecological Solid Waste Management Act of
2000 (Republic Act 9003).
This study examined the waste management practices of selected buffet establishments using a mixed-method
approach, combining quantitative measurements focusing on collection, segregation, and disposal accuracy
with qualitative insights from interviews and observations. Using a purposive sampling, data were gathered
from 200 respondents, including Local Government Unit (LGU) employees, restaurant managers, and staff,
through a structured survey. Statistical tools such as weighted mean, percentage, and one-way ANOVA were
employed to analyze perceptions and identify challenges.
Findings revealed that waste management practices in the selected establishments were rated as highly
practiced across all three components, with waste collection and disposal receiving the highest composite
mean scores. Statistical analysis showed no significant difference in assessments among the three respondent
groups, suggesting a shared perception of effective waste management implementation. Challenges, such as
irregular collection schedules and limited trash bins, were reported but considered very least encountered.
The study concludes that buffet restaurants in Quezon City generally demonstrate strong compliance with
waste management regulations, contributing to environmental sustainability and operational efficiency.
Recommendations include continuous monitoring, enhanced coordination with LGUs, and expanded
awareness campaigns to maintain and further improve waste management practices. These findings can serve
as a valuable reference for policymakers, restaurant operators, and future researchers in promoting sustainable
food service operations.
Keywords: waste management practices, collection, segregation, disposal, an analysis, Quezon City
METHODOLOGY
This study used a mixed-methods design, combining quantitative measurements with qualitative insights to
assess waste management practices in selected buffet restaurants in Quezon City. The quantitative component
involves evaluating waste collection, segregation, and disposal through survey questionnaire. The qualitative
component consists of interviews with restaurant managers and staff to gather insights on their experiences,
challenges, and strategies related to waste management.
A total of 200 respondents participated, consisting of Local Government Unit (LGU) employees, restaurant
managers, and restaurant employees. Respondents were chosen through purposive sampling to ensure they had
direct knowledge of waste management operations.
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
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Data were collected using a researcher-made survey questionnaire with three parts: (1) demographic profile,
(2) assessment of waste management practices in terms of collection, segregation, and disposal, and (3)
challenges encountered. Surveys were administered face-to-face after securing permission from restaurant
management and the Local Government Unit Heads. Selected restaurant managers and staff were interviewed
as well to get their opinions regarding waste management practices in the restaurants.
The data were analyzed using percentage and weighted mean to interpret responses, while one-way ANOVA
was used to determine if there were significant differences among the three groups of respondents. The Likert
scale was applied to measure the degree of practice and the extent of challenges encountered.
Interview Results (with Incorporated Responses)
The interviews provided valuable insights into how waste management is actually practiced in buffet
restaurants, highlighting the gap between policies and daily realities. Respondents from the LGU, restaurant
managers, and restaurant employees shared their experiences on awareness, customer behavior, challenges, and
possible solutions, offering a fuller picture of both obstacles and opportunities for improvement.
Awareness vs. Practice
Both managers and employees confirmed that they are aware of the waste management rules, but admitted that
implementation is inconsistent.
An LGU staff shared, “Most restaurants know the rules, but it’s hard to do them every day when no one
is checking.”
A restaurant manager explained, “We follow segregation rules, but during busy hours, staff and
customers don’t always use the right bins.”
An employee added, “We follow the rules, but during peak times, serving customers takes priority over
waste handling.
Customer Behavior and Plate Waste
Participants highlighted that customer habits strongly influence food waste in buffets.
A staff member observed, “A lot of waste comes from customers taking too much food and not finishing
it.”
A manager said, “Buffet guests expect plenty of choices, so we prepare more food, and that creates
more leftovers.”
Another manager added, “We meet city requirements but want to improve, possibly by working with
composting facilities for biodegradable waste.”
Barriers to Proper Waste Management
Restaurant workers described the challenges they face in maintaining proper waste handling.
An LGU employee admitted, “We don’t have enough people to monitor restaurants closely, so we rely
on their cooperation.”
A restaurant manager said, “We want to try composting or donations, but safety, cost, and logistics
make it difficult.”
A restaurant employee explained, “When the restaurant is full, we focus on serving customers first, and
segregation becomes less important.”
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Possible Solutions and Collaboration
Despite these issues, participants expressed willingness to improve practices through cooperation and
innovation.
An LGU staff member suggested, “Stricter enforcement and maybe rewards for good practices could
encourage compliance.”
A restaurant employee said, “If we had more support and better training, we could do it properly every
day.”
A manager emphasized, “Good waste management can save costs in the long run and attract eco-
friendly customers.”
RESULTS
Tables
Sub-Problem No.1: How do Local Government Unit Employees, Managers, and Restaurant Employees assess
the Waste Management Practices of Selected buffet restaurants in Quezon City in terms of Collection,
Segregation; and Disposal?
Waste Collection
Table 1. Assessment of Waste Collection
Indicators
Managers
LGU Employees
Employees
Rank
WM
VI
WM
VI
WM
VI
WM
VI
1. Retrieves and consolidates
waste materials directly from
their points of generation
within the establishment.
5.00
HP
4.70
HP
4.70
HP
4.80
HP
3
2. Utilizes color-coded bins and
designated collection bags in
accordance with established
segregation guidelines.
4.90
HP
4.70
HP
4.38
HP
4.66
HP
4
3. Adheres to the prescribed
schedule for municipal or
contracted waste collection
services.
5.00
HP
4.90
HP
4.80
HP
4.93
HP
1
4. Transfers waste to officially
designated collection or pick-
up areas for proper disposal.
4.70
HP
4.90
HP
4.83
HP
4.81
HP
2
Overall weighted mean
4.90
HP
4.83
HP
4.68
HP
4.80
HP
Legend:
5 4.20-5.00 Highly Practiced HP
4 3.40-4.19 Practiced P
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3 2.60-3.39 Moderately Practiced MP
2 1.80-2.59 Least Practiced LP
1 1.00-1.79 Very Least Practiced VLP
Table 1 presented the assessment of the three groups of respondents as to the waste management practices in
terms of waste collection rated as highly practiced in selected buffet restaurants in Quezon City as manifested
by the overall weighted mean of 4.80, and ranked the indicators such as “Adheres to the prescribed schedule
for municipal or contracted waste collection services.” with a composite weighted mean of 4.93, as rank 1;
Transfers waste to officially designated collection or pick-up areas for proper disposalwith a weighted mean
of 4.81, as rank 2; “Retrieves and consolidates waste materials directly from their points of generation within
the establishment.” with a weighted mean of 4.80, as rank 3, and lastly, Utilizes color-coded bins and
designated collection bags in accordance with established segregation guidelines.” with a composite weighted
mean of 4.66, as rank 4, respectively.
Waste Segregation
Table 2. Assessment of Waste Segregation
Indicators
Managers
LGU Employees
Employees
Composite
Rank
WM
VI
WM
VI
WM
VI
WM
VI
1. Separates biodegradable waste from
non-biodegradable waste in
accordance with established
environmental guidelines.
4.90
HP
4.50
HP
4.73
HP
4.71
HP
4
2. Identifies and segregates recyclable
materialssuch as food packaging,
glass, paper, plastic bottles, and
organic kitchen wastefor proper
recovery and reuse.
4.90
HP
5.00
HP
4.53
HP
4.81
HP
2
3. Employs color-coded receptacles for
waste segregation, ensuring
hazardous items such as broken glass
are appropriately contained.
4.90
HP
4.90
HP
4.68
HP
4.83
HP
1
4. Prepares and maintains separate
containers for wet and dry waste to
facilitate efficient handling and
disposal.
5.00
HP
4.70
HP
4.60
HP
4.77
HP
3
Overall weighted mean
4.93
HP
4.78
HP
4.64
HP
4.78
HP
As stated in Table 2, the Local Government Unit employees, managers, and restaurant employees assessed the
waste management practices in selected buffet restaurants in Quezon City in terms of waste segregation as
highly practiced as indicated by the overall weighted mean of 4.78; and ranked the indicators such as
Employs color-coded receptacles for waste segregation, ensuring hazardous items such as broken glass are
appropriately contained” with a composite weighted mean of 4.83, as rank 1; Identifies and segregates
recyclable materialssuch as food packaging, glass, paper, plastic bottles, and organic kitchen wastefor
proper recovery and reuse.” with a composite weighted mean of 4.81, as rank 2; Prepares and maintains
separate containers for wet and dry waste to facilitate efficient handling and disposal.with a weighted mean
of 4.77, as rank 3, and lastly, Prepares and maintains separate containers for wet and dry waste to facilitate
efficient handling and disposal.” with a composite weighted mean of 4.71, as rank 5, respectively.
INTERNATIONAL JOURNAL OF RESEARCH AND SCIENTIFIC INNOVATION (IJRSI)
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Waste Disposal
Table 3. Assessment of Waste Disposal
Indicators
Management
LGU Employees
Employees
Composite
Rank
WM
VI
WM
VI
WM
VI
WM
VI
1. Ensures strict adherence to
established protocols for the
safe and responsible disposal
of used cooking oil.
4.50
HP
4.70
HP
4.90
HP
4.70
HP
5
2. Maintains proper waste
handling and disposal
practices within all
operational areas of the
restaurant.
4.90
HP
4.80
HP
4.80
HP
4.83
HP
2
3. Implements standardized
waste disposal procedures
consistently across the
establishment.
4.80
HP
4.80
HP
4.90
HP
4.83
HP
2
4. Conducts independent waste
disposal operations by the
buffet restaurant at the
designated external waste
management facility of the
mall.
4.90
HP
4.70
HP
4.80
HP
4.80
HP
4
5. Segregates and disposes of
waste appropriately within
the mall’s designated
collection or dumping area.
4.80
HP
4.90
HP
4.78
HP
4.83
HP
2
Overall weighted mean
4.78
HP
4.78
HP
4.84
HP
4.80
HP
As revealed in Table 3, the three groups of respondents rated the waste disposal in selected buffet restaurants in
Quezon City as highly practiced as supported by the overall weighted mean of 4.80; and ranked the indicators
such as “Maintains proper waste handling and disposal practices within all operational areas of the restaurant.,”
Implements standardized waste disposal procedures consistently across the establishment,” and Segregates
and disposes of waste appropriately within the mall’s designated collection or dumping area. all with a
composite weighted mean of 4.83, as rank 2 respectively; Conducts independent waste disposal operations by
the buffet restaurant at the designated external waste management facility of the mall with a composite
weighted mean of 4.80, as rank 4, and lastly, Ensures strict adherence to established protocols for the safe and
responsible disposal of used cooking oil” with a composite weighted mean of 4.70, as rank 5, respectively.
Table 4. Summary of Assessments as to Waste Management Practices
Indicators
Managers
LGU Employees
Employees
Composite
Rank
WM
VI
WM
VI
WM
VI
WM
VI
1. Waste Collection
4.90
HP
4.83
HP
4.68
HP
4.80
HP
1.5
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2. Waste Segregation
4.93
HP
4.78
HP
4.64
HP
4.78
HP
3
3. Waste Disposal
4.78
HP
4.78
HP
4.84
HP
4.80
HP
1.5
Overall weighted mean
4.87
HP
4.80
HP
4.72
HP
4.79
HP
Table 4 summarized the overall the assessment of the Local Government Unit employees, managers, and
restaurant employees as to the waste management practices in selected buffet restaurants in Quezon City as
highly practiced as evidenced by the grand mean of 4.79; and ranked the sub-variables such “Waste
Collection” and “Waste Disposal” both having the same weighted mean of 4.80, as rank 1.5, while “Waste
Segregation” with a composite weighted mean of 4.78, as rank 3.
Sub-Problem No. 2: Is there a significant difference among the assessments of the three groups of
respondents as to the waste management practices of selected buffet restaurants in Quezon City using
the above-mentioned variables?
Table 5. Comparative Assessment of Respondents as to Waste Management Practices
Sources of Variation
ss
df
MS
F-stat
Decision
VI
Between
0.0338
2
0.0169
2.7618
Accept H
o
Not Significant
Within
0.0367
6
0.0061
Critical value at 0.05 = 5.14
As manifested in Table 5, the computed F-value of 2.7618 is less than the critical value of 5.14 with 2 and 6
degrees of freedom at a 0.05 level of significance. Hence, the null hypothesis is accepted and interpreted as not
significant. Therefore, there are no significant difference among the assessments of the three groups of
respondents as to waste management practices in selected buffet restaurants in Quezon City in terms of waste
collection, waste segregation, and waste disposal.
Sub-Problem No.3: What are the challenges encountered by the respondents?
Table 6. Assessment of Challenges Encountered
Indicators
Managers
LGU Employees
Employees
Composite
Rank
WM
VI
WM
VI
WM
VI
WM
VI
1. The proper time of garbage
collection is not observed
1.10
VLE
1.00
VLE
2.78
ME
1.63
LE
1
2. Irregular schedule of collection
for waste.
1.10
VLE
1.10
VLE
2.46
LE
1.55
LE
3
3. Failure to adhere to the
scheduled waste of collection time.
1.10
VLE
1.10
VLE
2.40
LE
1.53
LE
4
4. Proper segregation of waste is
not observed.
1.00
VLE
1.00
VLE
2.38
LE
1.46
VLE
7
5. Unable to sanitize the facility
used for segregating and
composting wastes.
1.30
VLE
1.10
VLE
2.28
LE
1.56
VLE
2
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6. Limited trash bins for non-
biodegradable and biodegradable
wastes.
1.10
VLE
1.00
VLE
2.30
LE
1.47
VLE
6
7. Proper disposal of waste is not
observed.
1.20
VLE
1.00
VLE
2.13
LE
1.44
VLE
8.5
8. Papers and plastic materials used
to serve food are not disposed
properly.
1.10
VLE
1.00
VLE
2.23
LE
1.44
VLE
8.5
9. Lack of knowledge about how
waste disposal works.
1.30
VLE
1.00
VLE
2.18
LE
1.49
VLE
5
10. Leftovers were not disposed
properly.
1.00
VLE
1.00
VLE
2.13
LE
1.38
VLE
0
Overall weighted mean
1.13
VLE
1.03
VLE
2.33
LE
1.50
VLE
As stated in Table 3, it was clearly indicated in the data that the aggregated overall composite weighted mean
of 1.50 signifies that the Local Government Unit employees, managers, and restaurant employees assessed
challenges encountered as to waste management practices of selected buffet restaurants in Quezon City as very
least encountered.
Proper time of garbage collection is not observed” with weighted mean of 1.44, Irregular schedule of
collection for waste” with weighted mean of 1.55, and “Failure to adhere to the scheduled waste of collection
time” with weighted mean of 1.53, “Proper segregation of waste is not observed” with weighted mean of 1.46,
Unable to sanitize the facility used for segregating and composting wastes” with a weighted mean of 1.56,
“Limited trash bins for non-biodegradable and biodegradable wastes, Proper disposal of is not observed” with
weighted mean of 1.47, “Papers and plastic materials used to serve food are not disposed of properly,with
weighted mean of 1.44 “Lack of knowledge about how waste disposal works, and Leftovers did not dispose of
properly” with weighted mean of 1.49.
In addition to survey results, interviews with LGU employees, restaurant managers, and restaurant
employees revealed that although awareness of waste management policies is generally high, consistent
application remains a challenge. During peak service hours, proper segregation and handling are sometimes set
aside to prioritize customer service. Customer behavior also plays a significant role, as many diners take more
food than they can finish. Managers admitted that the buffet style itselfbuilt on variety and abundance
inevitably creates surplus, though some showed interest in alternatives like composting to better manage
biodegradable waste.
Participants also identified barriers such as limited manpower, financial pressures, safety risks, and weak
enforcement mechanisms. Despite these constraints, there was a shared willingness to improve current
practices. Suggestions included closer monitoring, expanded training, and incentive systems. Managers further
noted that adopting sustainable approaches could not only reduce costs over time but also appeal to eco-
conscious customers. Overall, while buffet restaurants are aligned with existing regulations, opportunities
remain to make waste management more consistent, efficient, and sustainable.
DISCUSSIONS
The assessment of waste management practices in selected buffet restaurants in Quezon City, as evaluated by
Local Government Unit (LGU) employees, restaurant managers, and restaurant employees, revealed that waste
collection, segregation, and disposal were all highly practiced. Across the three dimensions, the highest-rated
aspects included strict adherence to waste collection schedules, the use of color-coded bins for segregation, and
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consistent implementation of standardized disposal procedures. The composite means for waste collection
(4.80) and waste disposal (4.80) were jointly ranked first, while waste segregation (4.78) closely followed.
The quantitative results showed remarkable uniformity across respondent groups, as statistical testing indicated
no significant differences in their assessments. This suggests a shared perception of waste management
compliance and effectiveness, regardless of the respondents’ roles.
In terms of specific practices, managers and staff consistently highlighted adherence to municipal collection
schedules and the use of proper disposal points as top priorities. Segregation was also rated highly, with
particular emphasis on the use of color-coded receptacles to separate hazardous, biodegradable, and recyclable
waste.
Despite these positive assessments, reported challenges were minimal and rated as “very least encountered”
overall (composite mean = 1.50). The few issues noted included occasional lapses in observing collection
schedules, limited trash bins, and insufficient sanitation of waste-handling facilities. These findings indicate
that while buffet restaurants demonstrate strong compliance with waste management standards, operational
efficiency could still be improved in certain logistical aspects.
The results highlight that integrated waste management systems are being successfully implemented, but
sustaining these practices during peak operational hours and ensuring resource adequacy (e.g., sufficient bins,
facility sanitation) remain critical for further improvement.
Quantitative results indicated that buffet restaurants in Quezon City generally comply with waste management
rules, however, the interviews showed that consistency is still a challenge. Restaurant employees and
restaurant managers admitted that waste segregation often weakens during peak hours when quick service
takes priority. Customer behavior also plays a big role in plate waste, as many diners take more food than they
can finish, and the buffet setup itselffocused on variety and abundancenaturally creates surplus. These
insights suggest that raising customer awareness and introducing portion control strategies could help reduce
waste.
Respondents also pointed to barriers such as limited staff, costs, safety concerns, and weak enforcement, which
make advanced practices like composting or food donations harder to sustain. Despite these challenges, both
LGU employees and restaurant managers expressed willingness to collaborate, recognizing that sustainable
practices can lower costs and attract eco-conscious customers. Overall, while compliance is evident, stronger
collaboration, training, and customer participation are needed to make waste management more consistent and
sustainable.
CONCLUSIONS
The waste management practices in the selected buffet restaurants in Quezon City are carried out with notable
consistency and effectiveness, covering all key components of collection, segregation, and disposal. Across all
respondent groupsmanagers, local government unit employees, and restaurant staffthere is a shared
agreement that these practices are highly implemented and aligned with the city’s existing environmental
regulations. While the overall assessment reflects strong compliance and operational discipline, only minimal
challenges were reported, suggesting that any constraints encountered have a limited impact on the overall
effectiveness of the waste management systems in place.
While compliance is strong, interviews revealed that consistency sometimes weakens during peak hours, as
fast service takes priority, and that customer behaviorsuch as taking more food than they can finishadds to
plate waste. Challenges like limited staff, costs, safety concerns, and weak enforcement also make it difficult to
adopt advanced practices such as composting or food donations. Even so, managers, staff, and LGU
representatives expressed a willingness to improve, recognizing that better training, monitoring, and customer
engagement could not only reduce waste but also cut costs and appeal to more eco-conscious diners.
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RECOMMENDATIONS
In light of the findings of the study, the following are highly recommended.
1. Management and restaurant employees may continue implementing effective waste management practices in
strict adherence to existing ordinances issued by the Local Government of Quezon City. Consistency in these
efforts will help maintain environmental standards and support the city’s sustainability goals.
2. In collaboration with the LGU, management may establish a regular monitoring system to ensure waste
management protocols are consistently followed. Employees should remain updated on the latest waste
management regulations and guidelines from local authorities, ensuring full compliance and making timely
adjustments to operational practices when needed.
3. Management should work closely with the Quezon City LGU to address operational challenges, such as
ensuring timely daily garbage collection and maintaining the cleanliness of facilities used for waste
segregation and composting. Proactive coordination can help eliminate minor inefficiencies before they
escalate.
4. Further research is recommended using the same parameters, consider all buffet restaurants in Quezon
City and to involve customers as respondents, since their dining habits greatly influence food waste and
can provide valuable insights for developing more practical and effective waste management strategies.
This will help validate and strengthen the reliability and accuracy of the present study’s findings while
allowing for broader perspectives.
5. Employees should actively raise awareness among colleagues about the value of proper waste management
and environmental sustainability. Sharing relevant information, practical resources, and best practices can
inspire more consistent adoption of responsible habits across the workforce.
6. Management and staff should conduct targeted awareness campaigns for customers, employees, community
members, and nearby businesses. These campaigns can focus on the benefits of proper waste management,
reduction strategies, and effective segregation. Communication channels may include social media,
infographics, informational posters, and participation in local environmental events
7. The management of buffet restaurants, in partnership with the LGU, should provide targeted training and
simple reminder systems to help staff balance customer service with proper waste handling, ensuring more
consistent waste segregation even during peak hours.
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