Recycling & Waste Management Solutions

ERA GROUP offers comprehensive, innovative, and environmentally responsible recycling and waste management services across key industrial sectors. Our goal is to help businesses and communities reduce waste, recover valuable resources, and minimize environmental impact through sustainable practices and advanced technologies.

Environmental Conservation:

• Waste Reduction: Recycling plastics diverts vast quantities of waste from landfills and natural environments, significantly reducing the environmental impact of plastic pollution.
• Resource Conservation: It conserves non-renewable natural resources, such as crude oil and natural gas, which are primary raw materials in plastic production. Recycling lessens the need for virgin materials, preserving these finite resources.
• Energy Savings: Producing recycled plastics generally requires less energy than manufacturing new plastics from raw feedstocks. This energy efficiency helps lower greenhouse gas emissions and contributes to a smaller carbon footprint.

Reduction of Environmental Pollution:

• Decreased Landfill Use: Recycling reduces the volume of plastics sent to landfills, where plastic waste can persist for hundreds of years, thereby lowering soil and groundwater contamination risks.
• Mitigated Ocean Pollution: Effective recycling efforts limit the amount of plastic waste entering oceans and waterways, protecting marine ecosystems and biodiversity from harmful plastic debris.

Economic Benefits:

• Cost-Effectiveness: Recycling plastics often costs less than producing new materials, due to savings in energy and raw materials, benefiting manufacturers and consumers alike.
• Job Creation: The recycling sector supports diverse employment opportunities across collection, sorting, processing, logistics, and manufacturing, fostering economic stability and growth in communities.
• Market Demand: Increasing consumer awareness and regulatory measures are driving higher demand for recycled plastic products, stimulating innovation and expanding markets for sustainable materials.

Support for the Circular Economy:

• Material Reuse: Recycling keeps plastic materials in circulation for longer periods, reducing waste generation and lessening reliance on virgin raw materials, thereby advancing circular economy goals.
• Product Innovation: Recycled plastics serve as feedstock for a wide range of new products—packaging, textiles, automotive components, construction materials, and more—encouraging sustainable design and innovation.

Plastic Recycling Technologies

‘Recycling’ means any recovery operation by which waste materials are reprocessed into products, materials or substances whether for the original or other purposes. It includes the reprocessing of organic material but does not include energy recovery and the reprocessing into materials that are to be used as fuels or for backfilling operations.

Plastic recycling encompasses various processes tailored to the type of plastic, its condition, and the desired end-use. Understanding these methods helps optimize resource recovery and supports sustainable waste management. Below are the main types of plastic recycling technologies:

Mechanical Recycling

Mechanical recycling physically processes plastic waste through sorting, cleaning, shredding, melting, and remolding to create new plastic products. It is the most common and widely implemented form of recycling.

Subtypes:

• Primary Recycling (Closed-Loop Recycling) Recycling plastic into products of similar quality, often using clean, pre-consumer waste. Example: Manufacturing new plastic containers from recycled plastic scraps.
• Secondary Recycling (Downcycling) Converting plastic into products of lower quality or reduced functionality. Example: Turning plastic bottles into fibers for textiles or construction materials.

Process:

Physical processing involves washing, shredding, melting, and reprocessing plastics into pellets or new products.

Best for:

Clean, single-polymer plastics with minimal contamination.

Challenges and Limitations:

• Plastic quality degrades with each recycling cycle, limiting the number of times material can be reused.
• Contamination by mixed plastics or impurities can reduce recyclate quality and value.

Chemical Recycling (Feedstock Recycling)

Chemical recycling breaks plastics down into their original chemical building blocks (monomers) or other useful chemicals. This method enables recycling of mixed or contaminated plastics that are difficult to process mechanically.

Subtypes:

• Depolymerization:(Closed-Loop Recycling) Breaking down polymers into monomers for repolymerization into high-quality plastics.
• Pyrolysis: Heating plastics without oxygen to produce oils, gases, and fuels.
• Gasification: Converting plastic waste into syngas for energy generation or chemical production.

Process:

Thermochemical or catalytic breakdown of plastics into chemical feedstocks.

Best for:

Mixed, contaminated, or complex plastic waste streams.

Challenges and Limitations:

• Typically, high energy consumption and operational complexity.
• Greater capital and operational costs compared to mechanical recycling.

Energy Recovery (Quaternary Recycling)

Energy recovery involves converting plastic waste into usable energy through controlled incineration. While it does not reclaim material resources, it captures energy from nonrecyclable plastics.

Examples:

Waste-to-energy facilities that burn plastic waste to produce electricity or heat for industrial or municipal use.

Process:

Incineration with energy capture systems.

Best for:

Non-recyclable plastics and residual waste after material recovery efforts.

Challenges and Limitations:

• Generates emissions such as carbon dioxide and other pollutants, requiring robust environmental controls.
• Does not contribute to material conservation or circularity.

Advanced Recycling (Emerging Technologies)

Advanced recycling encompasses innovative methods that use biological, chemical, or solvent-based processes to break down and reform plastics. These technologies aim to overcome limitations of traditional recycling.

Examples:

• Enzymatic recycling that uses enzymes to decompose plastics at lower temperatures.
• Solvent-based purification and depolymerization techniques.

Process:

Novel scientific and technological approaches to plastic depolymerization and purification.

Best for:

Hard-to-recycle plastics, contaminated materials, and complex polymer blends.

Challenges and Limitations:

• Currently in research or pilot phases with limited commercial scale.
• High costs and technical complexity challenge widespread adoption.

Plastic Recycling Process

The recycling process involves a series of systematic steps designed to collect, sort, clean, and reprocess discarded plastics into reusable forms, such as flakes or pellets. These recycled materials can then be used to produce a wide range of items — from packaging materials and textiles to automotive components and construction products. Different types of plastics, such as PET, HDPE, LDPE, PP, and PVC, require tailored recycling approaches, but the core stages remain largely similar. By implementing advanced technologies like optical sorting, hot water washing, and extrusion, the recycling industry ensures highquality output that meets stringent quality standards. Plastic recycling not only diverts waste from landfills and oceans but also reduces the need for virgin raw materials, significantly lowering energy consumption and greenhouse gas emissions. For industries, it presents an opportunity to align with environmental regulations, enhance sustainability credentials, and contribute to a greener economy.

01 Collection

Sources: Household recycling bins, municipal waste systems, industrial scrap, agricultural films, commercial packaging waste, and post-consumer returns.
Logistics: Collection can be centralized (drop-off stations) or decentralized (curbside pick-up, mobile collection vehicles).
Optimization: Use of GPS-tracked collection routes and compactors at collection points to maximize transport efficiency and reduce carbon footprint.

02 Sorting

Manual Pre-Sorting: Workers remove large contaminants such as textiles, wood, electronics, and hazardous items.
Mechanical Sorting: Conveyor-fed systems separate plastics by size, weight, and type.
Automated Sorting Technologies:
- o Near-Infrared (NIR) Spectroscopy: Detects specific polymer types for accurate separation.
- o Optical Color Sorters: Distinguish clear, colored, and opaque plastics.
- o Metal Detectors: Identify and remove ferrous and non-ferrous metals before crushing.
Impact: Higher sorting accuracy improves recycling yield and reduces rejected material.

03 Pre-Washing

Purpose: Remove surface-level dirt, dust, sand, and food residues.
Equipment: Rotary drum pre-washers, spray wash tunnels.
Process Flow: Plastics are tumbled with water under moderate pressure to loosen contaminants before mechanical processing.
Result: Cleaner feedstock entering the shredding stage, reducing equipment wear and improving cleaning efficiency downstream.

04 Shredding / Size Reduction

Purpose: Break down plastic into manageable flakes (12–20 mm) to improve cleaning, separation, and melting efficiency.
Equipment:
- o Granulators: Knife-based cutting for rigid plastics.
- o Shredders: Low-speed, high-torque systems for thick, bulky plastics.
- o Wet Crushers: Combine shredding with initial washing to reduce dust.
Note: Uniform particle size ensures consistent melting in extrusion.

05 Separation

Density-Based (Float-Sink): Separates materials using water or brine solution; lighter plastics (e.g., PP, PE) float, heavier ones (e.g., PET, PVC) sink.
Air Separation: Removes lightweight films, foils, or paper from heavier flakes.
Metal Removal:
- o Magnetic Separators for ferrous metals.
- o Eddy Current Separators for aluminum and non-ferrous metals.
Result: Purified material stream ready for deep cleaning.

06 Hot Water Cleaning

Purpose: Dissolve and loosen adhesives, labels, grease, and stubborn residues that cold washing can’t remove.
Process:
- o Heated wash tanks operating at 70–90°C.
- o Addition of detergents or caustic soda for improved cleaning.
- o Mechanical agitation to maximize contact between water and flakes.
Advantages:
- o Improves clarity and odor profile of recycled plastic.
- o Meets food-grade and high-quality application standards.
Sustainability Note: Closed-loop water filtration and heat recovery systems reduce both water and energy consumption.

07 Friction Washing

08 Rinsing

09 Drying

10 Extrusion & Melting

Purpose: Convert clean, dry flakes into molten plastic for pelletizing.
Process Details:
- o Single-screw or twin-screw extruders melt and homogenize material.
- o Vacuum Degassing removes air, water vapor, and volatile contaminants.
- o Melt filters capture micro-contaminants before pellet formation.
Output: Continuous molten strands with uniform polymer quality.