Factory tea waste is a high lignin and phenolic compounds-containing fibrous material generated in tonnes in tea manufacturing factories. In spite of its high nitrogen content, these physical and chemical properties limit its application as an organic amendment in soil. In this study, a novel technique was developed for extracting humic substrates by recycling factory tea waste and potential of those extracted humic substrates for improving soil properties and tea productivity was evaluated under field condition. Humic substrates are organic soil amendment that is often used for enhancing chemical and biochemical properties in soil. For extracting humic substrates, factory tea waste was processed through multi-step technique combined with easily available plant biomass like aquatic weeds. The method was suitable for extracting up to 25–30 L humic substrate solution containing 25.1 ± 3.8 g L−1 active constituent, 507.3 ± 11.8 mg L−1 total nitrogen and 2.91 ± 0.07 g L−1 total potassium by recycling each kilogram factory tea waste. The extract had shown fair similarity with standard humic acids. Under field condition, extracted humic substrates lead up to 6% increase in tea productivity and improved soil chemical properties. The residue remained at the end of this process was further vermicomposted to prepare organic amendment having total nitrogen content 1.34 ± 0.07 mg g−1 with C/N ratio 10.87 ± 0.92. In this study, the addition of pond sediment produced inferior quality humic substrate and vermicompost.
International Journal of Environmental Science and Technology – Springer Journals
Published: Jun 2, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera