Investigation on the production of bioethanol from black tea waste biomass in the seawater-based system

2018 ◽  
Vol 4 ◽  
pp. 209-213 ◽  
Author(s):  
Dash Indira ◽  
Bhaskar Das ◽  
Harshita Bhawsar ◽  
Sahoo Moumita ◽  
Eldin Maliyakkal Johnson ◽  
...  
Keyword(s):  
Black Tea ◽  
Waste Biomass ◽  
Tea Waste

scholarly journals Recycling Black Tea Waste Biomass as Activated Porous Carbon for Long Life Cycle Supercapacitor Electrodes

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6592
Author(s):  
Hojong Eom ◽  
Jooyoung Kim ◽  
Inho Nam ◽  
Sunyoung Bae
Keyword(s):  
Surface Area ◽  
Electrode Material ◽  
Storage System ◽  
Black Tea ◽  
Hydrothermal Carbonization ◽  
Waste Recycling ◽  
Large Surface Area ◽  
Waste Biomass ◽  
Activation Temperature ◽  
Tea Waste

Value creation through waste recycling is important for a sustainable society and future. In particular, biomass, which is based on crops, is a great recyclable resource that can be converted into useful materials. Black tea is one of the most cultivated agricultural products in the world and is mostly discarded after brewing. Herein, we report the application of black tea waste biomass as electrode material for supercapacitors through the activation of biomass hydrochar under various conditions. Raw black tea was converted into hydrochar via a hydrothermal carbonization process and then activated with potassium hydroxide (KOH) to provide a large surface area and porous structure. The activation temperature and ratio of KOH were controlled to synthesize the optimal black tea carbon (BTC) with a large surface area and porosity suitable for use as electrode material. This method suggests a direction in which the enormous amount of biomass, which is simply discarded, can be utilized in the energy storage system. The synthesized optimal BTC has a large surface area of 1062 m2 and specific capacitance up to 200 F∙g−1 at 1 mV∙s−1. Moreover, it has 98.8% retention of charge–discharge capacitance after 2000 cycles at the current density of 5 A∙g−1.

Techno-economic analysis of caffeine and catechins production from black tea waste

2019 ◽  
Vol 118 ◽  
pp. 1-12
Author(s):  
Nihat Alpagu Sayar ◽  
Selçen Durmaz Şam ◽  
Orkun Pinar ◽  
Damla Serper ◽  
Berna Sarıyar Akbulut ◽  
...  
Keyword(s):  
Economic Analysis ◽  
Black Tea ◽  
Tea Waste

High‐binding‐fastness dye from functional extracts of Keemun black tea waste for dyeing flax fabric

2021 ◽  
Author(s):  
Peng Wang ◽  
Hongfang Wu ◽  
Xianhong Zheng ◽  
Liran Bian ◽  
Yufang Sun ◽  
...  
Keyword(s):  
Black Tea ◽  
High Binding ◽  
Tea Waste

scholarly journals DFT/TDDFT and Experimental Studies of Natural Pigments Extracted from Black Tea Waste for DSSC Application

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
N. T. R. N. Kumara ◽  
Muhammad Raziq Rahimi Kooh ◽  
Andery Lim ◽  
Mohammad Iskandar Petra ◽  
Nyuk Yoong Voo ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Black Tea ◽  
Natural Pigments ◽  
Tea Waste

Selective catalytic conversion of tea waste biomass into phenolic-rich bio-oil and subsequent extraction

2021 ◽  
Vol 159 ◽  
pp. 105315
Author(s):  
Mudassir Hussain Tahir ◽  
Tayyaba Mubashir ◽  
Muhammad Bilal Hussain ◽  
Xingxing Cheng ◽  
Abdul Karim ◽  
...  
Keyword(s):  
Catalytic Conversion ◽  
Waste Biomass ◽  
Bio Oil ◽  
Tea Waste

Mechanical, thermal and chemical properties of spent black tea doped concrete

2020 ◽  
Vol 62 (10) ◽  
pp. 1055-1058
Author(s):  
Hakan Kaygusuz ◽  
Serap Hanbay
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Chemical Properties ◽  
Black Tea ◽  
High Volume ◽  
Strength Properties ◽  
Concrete Mixtures ◽  
Tea Waste ◽  
Compressive Strength Of Concrete ◽  
And Chemical Properties

Abstract The use of waste materials in concrete has been accelerated around the world recently. In this study, thermal and compressive strength properties of concrete doped with black tea waste are studied to assess the availability of using this type of waste in concrete. Black tea waste with 0.3 and 0.5 vol.-% were added to concrete mixtures. Thermal conductivity and effusivity of concrete with black tea waste were evaluated firstly, and load-bearing capacity of this biomass doped concrete were also investigated by the compressive test and Schmidt hammer test. The results showed that using black tea waste with 0.3 vol.-% slightly decreased the compressive strength of concrete whereas there was a considerable decrease in thermal conductivity. However, using black tea waste with 0.5 vol.-% causes an obvious decrease in compressive strength and a decrease in thermal conductivity of concrete which is not directly proportional with the amount of black tea. Therefore, with a small toleration of loss of compressive strength, black tea waste doped concrete can be produced with high volume fractions in order to have concrete samples with good thermal insulation for research purposes.

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